/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -i ../../../trunk/examples/svcomp/pthread/triangular-longest-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 03:29:17,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 03:29:17,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 03:29:17,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 03:29:17,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 03:29:17,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 03:29:17,911 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 03:29:17,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 03:29:17,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 03:29:17,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 03:29:17,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 03:29:17,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 03:29:17,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 03:29:17,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 03:29:17,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 03:29:17,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 03:29:17,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 03:29:17,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 03:29:17,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 03:29:17,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 03:29:17,966 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 03:29:17,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 03:29:17,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 03:29:17,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 03:29:17,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-12 03:29:17,989 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 03:29:17,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 03:29:17,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 03:29:17,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 03:29:17,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 03:29:17,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 03:29:17,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 03:29:17,996 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 03:29:17,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 03:29:17,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 03:29:17,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 03:29:17,999 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf [2020-11-12 03:29:18,051 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 03:29:18,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 03:29:18,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 03:29:18,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 03:29:18,053 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 03:29:18,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 03:29:18,054 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 03:29:18,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 03:29:18,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 03:29:18,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 03:29:18,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 03:29:18,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 03:29:18,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 03:29:18,055 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 03:29:18,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 03:29:18,056 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 03:29:18,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 03:29:18,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 03:29:18,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 03:29:18,057 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 03:29:18,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 03:29:18,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 03:29:18,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 03:29:18,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 03:29:18,058 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 03:29:18,058 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 03:29:18,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 03:29:18,059 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-12 03:29:18,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 03:29:18,059 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-12 03:29:18,059 INFO L138 SettingsManager]: * Sleep set reduction in concurrent analysis=DELAY_SET WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 03:29:18,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 03:29:18,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 03:29:18,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 03:29:18,469 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 03:29:18,469 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 03:29:18,470 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-2.i [2020-11-12 03:29:18,562 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c07064bef/7d93d5f74d34472c98b71667540d5e9d/FLAG40decc48b [2020-11-12 03:29:19,252 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 03:29:19,253 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i [2020-11-12 03:29:19,269 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c07064bef/7d93d5f74d34472c98b71667540d5e9d/FLAG40decc48b [2020-11-12 03:29:19,547 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c07064bef/7d93d5f74d34472c98b71667540d5e9d [2020-11-12 03:29:19,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 03:29:19,560 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 03:29:19,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 03:29:19,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 03:29:19,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 03:29:19,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 03:29:19" (1/1) ... [2020-11-12 03:29:19,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c469bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:19, skipping insertion in model container [2020-11-12 03:29:19,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 03:29:19" (1/1) ... [2020-11-12 03:29:19,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 03:29:19,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 03:29:20,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 03:29:20,196 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 03:29:20,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 03:29:20,403 INFO L208 MainTranslator]: Completed translation [2020-11-12 03:29:20,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:20 WrapperNode [2020-11-12 03:29:20,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 03:29:20,407 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 03:29:20,407 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 03:29:20,408 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 03:29:20,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:20" (1/1) ... [2020-11-12 03:29:20,452 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:20" (1/1) ... [2020-11-12 03:29:20,482 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 03:29:20,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 03:29:20,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 03:29:20,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 03:29:20,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:20" (1/1) ... [2020-11-12 03:29:20,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:20" (1/1) ... [2020-11-12 03:29:20,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:20" (1/1) ... [2020-11-12 03:29:20,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:20" (1/1) ... [2020-11-12 03:29:20,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:20" (1/1) ... [2020-11-12 03:29:20,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:20" (1/1) ... [2020-11-12 03:29:20,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:20" (1/1) ... [2020-11-12 03:29:20,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 03:29:20,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 03:29:20,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 03:29:20,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 03:29:20,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 03:29:20,656 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-11-12 03:29:20,656 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-11-12 03:29:20,657 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-11-12 03:29:20,657 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-11-12 03:29:20,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 03:29:20,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 03:29:20,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 03:29:20,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 03:29:20,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 03:29:20,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 03:29:20,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 03:29:20,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 03:29:20,662 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-12 03:29:21,098 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 03:29:21,099 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-12 03:29:21,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 03:29:21 BoogieIcfgContainer [2020-11-12 03:29:21,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 03:29:21,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 03:29:21,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 03:29:21,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 03:29:21,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 03:29:19" (1/3) ... [2020-11-12 03:29:21,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54321468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 03:29:21, skipping insertion in model container [2020-11-12 03:29:21,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:20" (2/3) ... [2020-11-12 03:29:21,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54321468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 03:29:21, skipping insertion in model container [2020-11-12 03:29:21,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 03:29:21" (3/3) ... [2020-11-12 03:29:21,110 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2020-11-12 03:29:21,126 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 03:29:21,126 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 03:29:21,129 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 03:29:21,130 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 03:29:21,158 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,159 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,159 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,159 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,159 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,160 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,160 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,160 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,160 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,161 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,161 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,161 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,161 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,162 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,162 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,162 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,162 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,163 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,163 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,163 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,164 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,164 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,164 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,164 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,164 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,165 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,165 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,165 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,166 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,166 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,166 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,166 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,167 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,167 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,167 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,167 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,168 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,168 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,168 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,168 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,169 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,169 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,169 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,169 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,169 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,170 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,170 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,170 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,171 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,171 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,171 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,171 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,171 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,172 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,172 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,172 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,174 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,175 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,175 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,175 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,175 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,176 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,181 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,181 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,181 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,182 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,182 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,182 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:21,185 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 03:29:21,198 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-12 03:29:21,221 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 03:29:21,221 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 03:29:21,221 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 03:29:21,221 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 03:29:21,222 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 03:29:21,222 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 03:29:21,222 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 03:29:21,222 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 03:29:21,234 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 65 places, 64 transitions, 138 flow [2020-11-12 03:29:21,364 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1848 states, 1846 states have (on average 3.2183098591549295) internal successors, (5941), 1847 states have internal predecessors, (5941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:21,562 WARN L455 BasicCegarLoop]: Sleep Set Reduction Time: 195ms [2020-11-12 03:29:21,568 WARN L456 BasicCegarLoop]: Sleep set: input automaton has 1848 states, 1846 states have (on average 3.2183098591549295) internal successors, (5941), 1847 states have internal predecessors, (5941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:21,572 WARN L457 BasicCegarLoop]: Sleep set: output automaton has 1848 states, 1648 states have (on average 1.5078883495145632) internal successors, (2485), 1847 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:21,579 INFO L276 IsEmpty]: Start isEmpty. Operand has 1848 states, 1648 states have (on average 1.5078883495145632) internal successors, (2485), 1847 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:21,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-12 03:29:21,586 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:21,587 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:21,587 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:21,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:21,594 INFO L82 PathProgramCache]: Analyzing trace with hash 27863943, now seen corresponding path program 1 times [2020-11-12 03:29:21,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:21,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561469478] [2020-11-12 03:29:21,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:22,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:22,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561469478] [2020-11-12 03:29:22,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 03:29:22,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 03:29:22,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696505853] [2020-11-12 03:29:22,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 03:29:22,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:22,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 03:29:22,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-12 03:29:22,108 INFO L87 Difference]: Start difference. First operand has 1848 states, 1648 states have (on average 1.5078883495145632) internal successors, (2485), 1847 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:22,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:22,295 INFO L93 Difference]: Finished difference Result 3336 states and 4454 transitions. [2020-11-12 03:29:22,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-12 03:29:22,297 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2020-11-12 03:29:22,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:22,322 INFO L225 Difference]: With dead ends: 3336 [2020-11-12 03:29:22,323 INFO L226 Difference]: Without dead ends: 1272 [2020-11-12 03:29:22,324 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-12 03:29:22,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2020-11-12 03:29:22,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 760. [2020-11-12 03:29:22,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 680 states have (on average 1.638235294117647) internal successors, (1114), 759 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:22,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1114 transitions. [2020-11-12 03:29:22,444 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1114 transitions. Word has length 28 [2020-11-12 03:29:22,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:22,444 INFO L481 AbstractCegarLoop]: Abstraction has 760 states and 1114 transitions. [2020-11-12 03:29:22,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:22,445 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1114 transitions. [2020-11-12 03:29:22,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-12 03:29:22,448 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:22,448 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:22,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 03:29:22,449 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:22,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:22,450 INFO L82 PathProgramCache]: Analyzing trace with hash 168146404, now seen corresponding path program 1 times [2020-11-12 03:29:22,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:22,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253068449] [2020-11-12 03:29:22,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:22,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:22,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253068449] [2020-11-12 03:29:22,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 03:29:22,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 03:29:22,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061247081] [2020-11-12 03:29:22,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 03:29:22,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:22,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 03:29:22,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 03:29:22,719 INFO L87 Difference]: Start difference. First operand 760 states and 1114 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:22,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:22,892 INFO L93 Difference]: Finished difference Result 1119 states and 1772 transitions. [2020-11-12 03:29:22,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 03:29:22,893 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2020-11-12 03:29:22,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:22,897 INFO L225 Difference]: With dead ends: 1119 [2020-11-12 03:29:22,897 INFO L226 Difference]: Without dead ends: 728 [2020-11-12 03:29:22,898 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-11-12 03:29:22,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-11-12 03:29:22,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 684. [2020-11-12 03:29:22,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 620 states have (on average 1.696774193548387) internal successors, (1052), 683 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:22,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1052 transitions. [2020-11-12 03:29:22,925 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1052 transitions. Word has length 32 [2020-11-12 03:29:22,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:22,926 INFO L481 AbstractCegarLoop]: Abstraction has 684 states and 1052 transitions. [2020-11-12 03:29:22,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:22,926 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1052 transitions. [2020-11-12 03:29:22,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-12 03:29:22,929 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:22,929 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:22,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 03:29:22,929 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:22,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:22,930 INFO L82 PathProgramCache]: Analyzing trace with hash 961549801, now seen corresponding path program 1 times [2020-11-12 03:29:22,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:22,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667430359] [2020-11-12 03:29:22,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:22,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:23,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:23,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667430359] [2020-11-12 03:29:23,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 03:29:23,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-12 03:29:23,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501292735] [2020-11-12 03:29:23,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-12 03:29:23,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:23,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-12 03:29:23,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-12 03:29:23,131 INFO L87 Difference]: Start difference. First operand 684 states and 1052 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:23,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:23,352 INFO L93 Difference]: Finished difference Result 1560 states and 2528 transitions. [2020-11-12 03:29:23,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-12 03:29:23,353 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2020-11-12 03:29:23,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:23,363 INFO L225 Difference]: With dead ends: 1560 [2020-11-12 03:29:23,363 INFO L226 Difference]: Without dead ends: 1299 [2020-11-12 03:29:23,364 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-11-12 03:29:23,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2020-11-12 03:29:23,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 727. [2020-11-12 03:29:23,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 663 states have (on average 1.7134238310708898) internal successors, (1136), 726 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:23,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1136 transitions. [2020-11-12 03:29:23,425 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1136 transitions. Word has length 36 [2020-11-12 03:29:23,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:23,426 INFO L481 AbstractCegarLoop]: Abstraction has 727 states and 1136 transitions. [2020-11-12 03:29:23,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:23,426 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1136 transitions. [2020-11-12 03:29:23,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-12 03:29:23,428 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:23,428 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:23,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 03:29:23,429 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:23,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:23,430 INFO L82 PathProgramCache]: Analyzing trace with hash 661466183, now seen corresponding path program 2 times [2020-11-12 03:29:23,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:23,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447432117] [2020-11-12 03:29:23,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:23,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:23,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447432117] [2020-11-12 03:29:23,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 03:29:23,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 03:29:23,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810467214] [2020-11-12 03:29:23,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 03:29:23,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:23,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 03:29:23,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 03:29:23,601 INFO L87 Difference]: Start difference. First operand 727 states and 1136 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:23,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:23,837 INFO L93 Difference]: Finished difference Result 1111 states and 1800 transitions. [2020-11-12 03:29:23,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-12 03:29:23,838 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2020-11-12 03:29:23,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:23,843 INFO L225 Difference]: With dead ends: 1111 [2020-11-12 03:29:23,844 INFO L226 Difference]: Without dead ends: 911 [2020-11-12 03:29:23,845 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-11-12 03:29:23,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2020-11-12 03:29:23,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 795. [2020-11-12 03:29:23,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 731 states have (on average 1.7045143638850888) internal successors, (1246), 794 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:23,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1246 transitions. [2020-11-12 03:29:23,874 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1246 transitions. Word has length 36 [2020-11-12 03:29:23,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:23,874 INFO L481 AbstractCegarLoop]: Abstraction has 795 states and 1246 transitions. [2020-11-12 03:29:23,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:23,875 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1246 transitions. [2020-11-12 03:29:23,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-12 03:29:23,877 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:23,877 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:23,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 03:29:23,877 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:23,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:23,878 INFO L82 PathProgramCache]: Analyzing trace with hash -17785689, now seen corresponding path program 3 times [2020-11-12 03:29:23,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:23,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570936700] [2020-11-12 03:29:23,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:24,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:24,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570936700] [2020-11-12 03:29:24,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 03:29:24,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 03:29:24,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116543047] [2020-11-12 03:29:24,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 03:29:24,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:24,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 03:29:24,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-12 03:29:24,040 INFO L87 Difference]: Start difference. First operand 795 states and 1246 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:24,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:24,203 INFO L93 Difference]: Finished difference Result 2335 states and 3566 transitions. [2020-11-12 03:29:24,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-12 03:29:24,204 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2020-11-12 03:29:24,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:24,220 INFO L225 Difference]: With dead ends: 2335 [2020-11-12 03:29:24,221 INFO L226 Difference]: Without dead ends: 2068 [2020-11-12 03:29:24,221 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-11-12 03:29:24,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2068 states. [2020-11-12 03:29:24,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2068 to 907. [2020-11-12 03:29:24,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 843 states have (on average 1.763938315539739) internal successors, (1487), 906 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:24,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1487 transitions. [2020-11-12 03:29:24,267 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1487 transitions. Word has length 36 [2020-11-12 03:29:24,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:24,268 INFO L481 AbstractCegarLoop]: Abstraction has 907 states and 1487 transitions. [2020-11-12 03:29:24,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:24,268 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1487 transitions. [2020-11-12 03:29:24,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-12 03:29:24,272 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:24,272 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:24,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 03:29:24,273 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:24,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:24,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1267275225, now seen corresponding path program 4 times [2020-11-12 03:29:24,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:24,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431686207] [2020-11-12 03:29:24,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:24,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:24,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431686207] [2020-11-12 03:29:24,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 03:29:24,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 03:29:24,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092101569] [2020-11-12 03:29:24,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 03:29:24,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:24,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 03:29:24,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 03:29:24,446 INFO L87 Difference]: Start difference. First operand 907 states and 1487 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:24,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:24,624 INFO L93 Difference]: Finished difference Result 1275 states and 2103 transitions. [2020-11-12 03:29:24,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-12 03:29:24,624 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2020-11-12 03:29:24,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:24,630 INFO L225 Difference]: With dead ends: 1275 [2020-11-12 03:29:24,630 INFO L226 Difference]: Without dead ends: 921 [2020-11-12 03:29:24,630 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-11-12 03:29:24,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2020-11-12 03:29:24,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 806. [2020-11-12 03:29:24,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 742 states have (on average 1.7142857142857142) internal successors, (1272), 805 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:24,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1272 transitions. [2020-11-12 03:29:24,653 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1272 transitions. Word has length 36 [2020-11-12 03:29:24,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:24,654 INFO L481 AbstractCegarLoop]: Abstraction has 806 states and 1272 transitions. [2020-11-12 03:29:24,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:24,654 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1272 transitions. [2020-11-12 03:29:24,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-12 03:29:24,655 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:24,656 INFO L494 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:24,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 03:29:24,656 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:24,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:24,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1759874342, now seen corresponding path program 1 times [2020-11-12 03:29:24,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:24,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869702084] [2020-11-12 03:29:24,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:24,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:24,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869702084] [2020-11-12 03:29:24,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803608200] [2020-11-12 03:29:24,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:24,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-12 03:29:24,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:25,020 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:25,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:25,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:25,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-11-12 03:29:25,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48028046] [2020-11-12 03:29:25,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-12 03:29:25,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:25,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-12 03:29:25,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-12 03:29:25,033 INFO L87 Difference]: Start difference. First operand 806 states and 1272 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:25,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:25,166 INFO L93 Difference]: Finished difference Result 1204 states and 2014 transitions. [2020-11-12 03:29:25,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-12 03:29:25,167 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2020-11-12 03:29:25,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:25,172 INFO L225 Difference]: With dead ends: 1204 [2020-11-12 03:29:25,172 INFO L226 Difference]: Without dead ends: 934 [2020-11-12 03:29:25,173 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-11-12 03:29:25,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2020-11-12 03:29:25,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 855. [2020-11-12 03:29:25,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 791 states have (on average 1.7142857142857142) internal successors, (1356), 854 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:25,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1356 transitions. [2020-11-12 03:29:25,202 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1356 transitions. Word has length 41 [2020-11-12 03:29:25,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:25,202 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1356 transitions. [2020-11-12 03:29:25,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:25,203 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1356 transitions. [2020-11-12 03:29:25,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-12 03:29:25,204 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:25,205 INFO L494 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:25,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-12 03:29:25,419 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:25,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:25,420 INFO L82 PathProgramCache]: Analyzing trace with hash 349944486, now seen corresponding path program 2 times [2020-11-12 03:29:25,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:25,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521282830] [2020-11-12 03:29:25,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:25,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:25,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:25,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521282830] [2020-11-12 03:29:25,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587673563] [2020-11-12 03:29:25,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:25,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:29:25,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:25,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-12 03:29:25,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:25,803 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:29:25,825 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:25,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:25,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:25,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-11-12 03:29:25,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076894995] [2020-11-12 03:29:25,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-12 03:29:25,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:25,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-12 03:29:25,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-12 03:29:25,834 INFO L87 Difference]: Start difference. First operand 855 states and 1356 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:26,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:26,054 INFO L93 Difference]: Finished difference Result 1334 states and 2274 transitions. [2020-11-12 03:29:26,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-12 03:29:26,054 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2020-11-12 03:29:26,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:26,060 INFO L225 Difference]: With dead ends: 1334 [2020-11-12 03:29:26,060 INFO L226 Difference]: Without dead ends: 1064 [2020-11-12 03:29:26,061 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-11-12 03:29:26,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2020-11-12 03:29:26,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 862. [2020-11-12 03:29:26,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 798 states have (on average 1.7280701754385965) internal successors, (1379), 861 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:26,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1379 transitions. [2020-11-12 03:29:26,089 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1379 transitions. Word has length 41 [2020-11-12 03:29:26,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:26,089 INFO L481 AbstractCegarLoop]: Abstraction has 862 states and 1379 transitions. [2020-11-12 03:29:26,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:26,090 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1379 transitions. [2020-11-12 03:29:26,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-12 03:29:26,091 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:26,091 INFO L494 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:26,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:26,304 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:26,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:26,305 INFO L82 PathProgramCache]: Analyzing trace with hash 877888340, now seen corresponding path program 3 times [2020-11-12 03:29:26,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:26,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19194929] [2020-11-12 03:29:26,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:26,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:26,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19194929] [2020-11-12 03:29:26,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897587986] [2020-11-12 03:29:26,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:26,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-12 03:29:26,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:26,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-12 03:29:26,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:26,527 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:26,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:26,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:26,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-11-12 03:29:26,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902265142] [2020-11-12 03:29:26,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-12 03:29:26,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:26,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-12 03:29:26,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-11-12 03:29:26,536 INFO L87 Difference]: Start difference. First operand 862 states and 1379 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:26,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:26,738 INFO L93 Difference]: Finished difference Result 2436 states and 3766 transitions. [2020-11-12 03:29:26,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-12 03:29:26,739 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2020-11-12 03:29:26,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:26,750 INFO L225 Difference]: With dead ends: 2436 [2020-11-12 03:29:26,750 INFO L226 Difference]: Without dead ends: 2151 [2020-11-12 03:29:26,751 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-11-12 03:29:26,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2020-11-12 03:29:26,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 932. [2020-11-12 03:29:26,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 868 states have (on average 1.7799539170506913) internal successors, (1545), 931 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:26,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1545 transitions. [2020-11-12 03:29:26,788 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1545 transitions. Word has length 41 [2020-11-12 03:29:26,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:26,788 INFO L481 AbstractCegarLoop]: Abstraction has 932 states and 1545 transitions. [2020-11-12 03:29:26,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:26,788 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1545 transitions. [2020-11-12 03:29:26,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-12 03:29:26,790 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:26,790 INFO L494 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:27,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:27,006 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:27,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:27,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1717865532, now seen corresponding path program 4 times [2020-11-12 03:29:27,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:27,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564434063] [2020-11-12 03:29:27,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:27,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:27,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564434063] [2020-11-12 03:29:27,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004094257] [2020-11-12 03:29:27,173 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:27,248 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:29:27,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:27,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-12 03:29:27,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:27,287 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:29:27,301 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:27,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:27,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:27,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-11-12 03:29:27,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064634319] [2020-11-12 03:29:27,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-12 03:29:27,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:27,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-12 03:29:27,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-12 03:29:27,308 INFO L87 Difference]: Start difference. First operand 932 states and 1545 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:27,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:27,589 INFO L93 Difference]: Finished difference Result 1485 states and 2461 transitions. [2020-11-12 03:29:27,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-12 03:29:27,590 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2020-11-12 03:29:27,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:27,595 INFO L225 Difference]: With dead ends: 1485 [2020-11-12 03:29:27,595 INFO L226 Difference]: Without dead ends: 1089 [2020-11-12 03:29:27,596 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:29:27,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2020-11-12 03:29:27,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 902. [2020-11-12 03:29:27,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 838 states have (on average 1.7291169451073987) internal successors, (1449), 901 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:27,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1449 transitions. [2020-11-12 03:29:27,621 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1449 transitions. Word has length 41 [2020-11-12 03:29:27,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:27,622 INFO L481 AbstractCegarLoop]: Abstraction has 902 states and 1449 transitions. [2020-11-12 03:29:27,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:27,622 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1449 transitions. [2020-11-12 03:29:27,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-12 03:29:27,623 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:27,623 INFO L494 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:27,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:27,838 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:27,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:27,839 INFO L82 PathProgramCache]: Analyzing trace with hash 376014513, now seen corresponding path program 1 times [2020-11-12 03:29:27,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:27,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982851911] [2020-11-12 03:29:27,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:27,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:27,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982851911] [2020-11-12 03:29:27,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17039222] [2020-11-12 03:29:27,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:28,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-12 03:29:28,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:28,050 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:28,063 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:28,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:28,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:28,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-11-12 03:29:28,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538597009] [2020-11-12 03:29:28,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-12 03:29:28,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:28,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-12 03:29:28,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-11-12 03:29:28,071 INFO L87 Difference]: Start difference. First operand 902 states and 1449 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:28,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:28,230 INFO L93 Difference]: Finished difference Result 1344 states and 2190 transitions. [2020-11-12 03:29:28,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-12 03:29:28,231 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2020-11-12 03:29:28,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:28,237 INFO L225 Difference]: With dead ends: 1344 [2020-11-12 03:29:28,237 INFO L226 Difference]: Without dead ends: 1144 [2020-11-12 03:29:28,237 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-11-12 03:29:28,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2020-11-12 03:29:28,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 867. [2020-11-12 03:29:28,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 803 states have (on average 1.7110834371108343) internal successors, (1374), 866 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:28,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1374 transitions. [2020-11-12 03:29:28,261 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1374 transitions. Word has length 41 [2020-11-12 03:29:28,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:28,262 INFO L481 AbstractCegarLoop]: Abstraction has 867 states and 1374 transitions. [2020-11-12 03:29:28,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:28,262 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1374 transitions. [2020-11-12 03:29:28,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-12 03:29:28,263 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:28,264 INFO L494 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:28,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-11-12 03:29:28,476 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:28,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:28,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1435844774, now seen corresponding path program 1 times [2020-11-12 03:29:28,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:28,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839661933] [2020-11-12 03:29:28,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:28,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:28,681 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:28,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839661933] [2020-11-12 03:29:28,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033902910] [2020-11-12 03:29:28,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:28,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-12 03:29:28,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:28,813 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:28,861 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:28,872 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:28,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:28,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2020-11-12 03:29:28,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413676450] [2020-11-12 03:29:28,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-12 03:29:28,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:28,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-12 03:29:28,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-11-12 03:29:28,875 INFO L87 Difference]: Start difference. First operand 867 states and 1374 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:29,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:29,203 INFO L93 Difference]: Finished difference Result 1725 states and 2818 transitions. [2020-11-12 03:29:29,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-12 03:29:29,204 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2020-11-12 03:29:29,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:29,211 INFO L225 Difference]: With dead ends: 1725 [2020-11-12 03:29:29,211 INFO L226 Difference]: Without dead ends: 1391 [2020-11-12 03:29:29,212 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:29:29,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2020-11-12 03:29:29,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 942. [2020-11-12 03:29:29,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 878 states have (on average 1.7357630979498861) internal successors, (1524), 941 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:29,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1524 transitions. [2020-11-12 03:29:29,239 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1524 transitions. Word has length 46 [2020-11-12 03:29:29,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:29,240 INFO L481 AbstractCegarLoop]: Abstraction has 942 states and 1524 transitions. [2020-11-12 03:29:29,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:29,240 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1524 transitions. [2020-11-12 03:29:29,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-12 03:29:29,241 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:29,242 INFO L494 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:29,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:29,455 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:29,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:29,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1066195716, now seen corresponding path program 2 times [2020-11-12 03:29:29,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:29,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595769753] [2020-11-12 03:29:29,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:29,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:29,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595769753] [2020-11-12 03:29:29,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441607700] [2020-11-12 03:29:29,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:29,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:29:29,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:29,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-12 03:29:29,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:29,682 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:29,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:29,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:29,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-11-12 03:29:29,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179703667] [2020-11-12 03:29:29,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-12 03:29:29,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:29,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-12 03:29:29,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-12 03:29:29,690 INFO L87 Difference]: Start difference. First operand 942 states and 1524 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:29,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:29,860 INFO L93 Difference]: Finished difference Result 1654 states and 2874 transitions. [2020-11-12 03:29:29,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-12 03:29:29,860 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2020-11-12 03:29:29,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:29,869 INFO L225 Difference]: With dead ends: 1654 [2020-11-12 03:29:29,869 INFO L226 Difference]: Without dead ends: 1384 [2020-11-12 03:29:29,869 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-11-12 03:29:29,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2020-11-12 03:29:29,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1037. [2020-11-12 03:29:29,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1037 states, 973 states have (on average 1.7307297019527235) internal successors, (1684), 1036 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:29,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1684 transitions. [2020-11-12 03:29:29,899 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1684 transitions. Word has length 46 [2020-11-12 03:29:29,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:29,900 INFO L481 AbstractCegarLoop]: Abstraction has 1037 states and 1684 transitions. [2020-11-12 03:29:29,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:29,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1684 transitions. [2020-11-12 03:29:29,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-12 03:29:29,902 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:29,902 INFO L494 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:30,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:30,117 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:30,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:30,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1818841724, now seen corresponding path program 3 times [2020-11-12 03:29:30,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:30,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720945068] [2020-11-12 03:29:30,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:30,244 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:30,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720945068] [2020-11-12 03:29:30,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695873311] [2020-11-12 03:29:30,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:30,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-12 03:29:30,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:30,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-12 03:29:30,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:30,338 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:29:30,374 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:30,384 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:30,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:30,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-11-12 03:29:30,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653635583] [2020-11-12 03:29:30,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-12 03:29:30,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:30,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-12 03:29:30,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-11-12 03:29:30,386 INFO L87 Difference]: Start difference. First operand 1037 states and 1684 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:30,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:30,710 INFO L93 Difference]: Finished difference Result 1654 states and 2842 transitions. [2020-11-12 03:29:30,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-12 03:29:30,710 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2020-11-12 03:29:30,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:30,718 INFO L225 Difference]: With dead ends: 1654 [2020-11-12 03:29:30,718 INFO L226 Difference]: Without dead ends: 1384 [2020-11-12 03:29:30,719 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-11-12 03:29:30,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2020-11-12 03:29:30,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1087. [2020-11-12 03:29:30,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1023 states have (on average 1.7302052785923754) internal successors, (1770), 1086 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:30,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1770 transitions. [2020-11-12 03:29:30,753 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1770 transitions. Word has length 46 [2020-11-12 03:29:30,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:30,754 INFO L481 AbstractCegarLoop]: Abstraction has 1087 states and 1770 transitions. [2020-11-12 03:29:30,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:30,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1770 transitions. [2020-11-12 03:29:30,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-12 03:29:30,756 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:30,756 INFO L494 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:30,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-12 03:29:30,972 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:30,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:30,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1948181718, now seen corresponding path program 4 times [2020-11-12 03:29:30,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:30,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38590902] [2020-11-12 03:29:30,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:31,089 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:31,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38590902] [2020-11-12 03:29:31,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964368952] [2020-11-12 03:29:31,090 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:31,166 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:29:31,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:31,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-12 03:29:31,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:31,201 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:31,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:31,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:31,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-11-12 03:29:31,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505698137] [2020-11-12 03:29:31,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-12 03:29:31,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:31,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-12 03:29:31,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-12 03:29:31,211 INFO L87 Difference]: Start difference. First operand 1087 states and 1770 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:31,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:31,462 INFO L93 Difference]: Finished difference Result 2766 states and 4354 transitions. [2020-11-12 03:29:31,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-12 03:29:31,463 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2020-11-12 03:29:31,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:31,476 INFO L225 Difference]: With dead ends: 2766 [2020-11-12 03:29:31,476 INFO L226 Difference]: Without dead ends: 2481 [2020-11-12 03:29:31,477 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:29:31,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2481 states. [2020-11-12 03:29:31,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2481 to 1197. [2020-11-12 03:29:31,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 1133 states have (on average 1.7590467784642543) internal successors, (1993), 1196 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:31,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1993 transitions. [2020-11-12 03:29:31,517 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1993 transitions. Word has length 46 [2020-11-12 03:29:31,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:31,517 INFO L481 AbstractCegarLoop]: Abstraction has 1197 states and 1993 transitions. [2020-11-12 03:29:31,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:31,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1993 transitions. [2020-11-12 03:29:31,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-12 03:29:31,519 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:31,520 INFO L494 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:31,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-12 03:29:31,736 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:31,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:31,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1108204526, now seen corresponding path program 5 times [2020-11-12 03:29:31,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:31,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447141026] [2020-11-12 03:29:31,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:31,844 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:31,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447141026] [2020-11-12 03:29:31,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307117286] [2020-11-12 03:29:31,844 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:31,917 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:29:31,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:31,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-12 03:29:31,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:31,950 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:29:31,973 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:31,978 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:31,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:31,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-11-12 03:29:31,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859094538] [2020-11-12 03:29:31,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-12 03:29:31,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:31,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-12 03:29:31,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-11-12 03:29:31,981 INFO L87 Difference]: Start difference. First operand 1197 states and 1993 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:32,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:32,463 INFO L93 Difference]: Finished difference Result 2206 states and 3815 transitions. [2020-11-12 03:29:32,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-12 03:29:32,464 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2020-11-12 03:29:32,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:32,473 INFO L225 Difference]: With dead ends: 2206 [2020-11-12 03:29:32,473 INFO L226 Difference]: Without dead ends: 1634 [2020-11-12 03:29:32,474 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=169, Invalid=481, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:29:32,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2020-11-12 03:29:32,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1092. [2020-11-12 03:29:32,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 1028 states have (on average 1.7363813229571985) internal successors, (1785), 1091 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:32,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1785 transitions. [2020-11-12 03:29:32,503 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1785 transitions. Word has length 46 [2020-11-12 03:29:32,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:32,503 INFO L481 AbstractCegarLoop]: Abstraction has 1092 states and 1785 transitions. [2020-11-12 03:29:32,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:32,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1785 transitions. [2020-11-12 03:29:32,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-12 03:29:32,505 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:32,505 INFO L494 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:32,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-12 03:29:32,720 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:32,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:32,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1118171503, now seen corresponding path program 6 times [2020-11-12 03:29:32,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:32,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496678635] [2020-11-12 03:29:32,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:32,868 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:32,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496678635] [2020-11-12 03:29:32,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842435013] [2020-11-12 03:29:32,869 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:32,943 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-11-12 03:29:32,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:32,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-12 03:29:32,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:32,975 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:33,003 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:33,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:33,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-11-12 03:29:33,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951552263] [2020-11-12 03:29:33,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-12 03:29:33,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:33,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-12 03:29:33,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-12 03:29:33,007 INFO L87 Difference]: Start difference. First operand 1092 states and 1785 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:33,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:33,230 INFO L93 Difference]: Finished difference Result 1664 states and 2860 transitions. [2020-11-12 03:29:33,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-12 03:29:33,231 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2020-11-12 03:29:33,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:33,248 INFO L225 Difference]: With dead ends: 1664 [2020-11-12 03:29:33,248 INFO L226 Difference]: Without dead ends: 1394 [2020-11-12 03:29:33,248 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2020-11-12 03:29:33,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2020-11-12 03:29:33,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1107. [2020-11-12 03:29:33,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 1043 states have (on average 1.725790987535954) internal successors, (1800), 1106 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:33,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1800 transitions. [2020-11-12 03:29:33,298 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1800 transitions. Word has length 51 [2020-11-12 03:29:33,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:33,298 INFO L481 AbstractCegarLoop]: Abstraction has 1107 states and 1800 transitions. [2020-11-12 03:29:33,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:33,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1800 transitions. [2020-11-12 03:29:33,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-12 03:29:33,300 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:33,300 INFO L494 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:33,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-12 03:29:33,514 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:33,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:33,515 INFO L82 PathProgramCache]: Analyzing trace with hash -503127889, now seen corresponding path program 7 times [2020-11-12 03:29:33,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:33,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368150118] [2020-11-12 03:29:33,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:33,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:33,662 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:33,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368150118] [2020-11-12 03:29:33,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370474632] [2020-11-12 03:29:33,664 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:33,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-12 03:29:33,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:33,764 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:29:33,783 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:33,789 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:33,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:33,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-11-12 03:29:33,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757986025] [2020-11-12 03:29:33,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-12 03:29:33,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:33,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-12 03:29:33,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-11-12 03:29:33,792 INFO L87 Difference]: Start difference. First operand 1107 states and 1800 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:34,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:34,178 INFO L93 Difference]: Finished difference Result 1789 states and 3072 transitions. [2020-11-12 03:29:34,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-12 03:29:34,179 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2020-11-12 03:29:34,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:34,183 INFO L225 Difference]: With dead ends: 1789 [2020-11-12 03:29:34,183 INFO L226 Difference]: Without dead ends: 1519 [2020-11-12 03:29:34,184 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:29:34,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2020-11-12 03:29:34,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 1127. [2020-11-12 03:29:34,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1063 states have (on average 1.735653809971778) internal successors, (1845), 1126 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:34,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1845 transitions. [2020-11-12 03:29:34,214 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1845 transitions. Word has length 51 [2020-11-12 03:29:34,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:34,214 INFO L481 AbstractCegarLoop]: Abstraction has 1127 states and 1845 transitions. [2020-11-12 03:29:34,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:34,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1845 transitions. [2020-11-12 03:29:34,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-12 03:29:34,217 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:34,217 INFO L494 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:34,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-12 03:29:34,432 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:34,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:34,433 INFO L82 PathProgramCache]: Analyzing trace with hash 630962275, now seen corresponding path program 8 times [2020-11-12 03:29:34,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:34,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258469829] [2020-11-12 03:29:34,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:34,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:34,545 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:34,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258469829] [2020-11-12 03:29:34,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664658540] [2020-11-12 03:29:34,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:34,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:29:34,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:34,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-12 03:29:34,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:34,639 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:34,645 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:34,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:34,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-11-12 03:29:34,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888337750] [2020-11-12 03:29:34,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-12 03:29:34,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:34,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-12 03:29:34,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-12 03:29:34,647 INFO L87 Difference]: Start difference. First operand 1127 states and 1845 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:34,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:34,978 INFO L93 Difference]: Finished difference Result 2866 states and 4514 transitions. [2020-11-12 03:29:34,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-12 03:29:34,978 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2020-11-12 03:29:34,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:34,984 INFO L225 Difference]: With dead ends: 2866 [2020-11-12 03:29:34,984 INFO L226 Difference]: Without dead ends: 2581 [2020-11-12 03:29:34,985 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:29:34,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2581 states. [2020-11-12 03:29:35,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2581 to 1212. [2020-11-12 03:29:35,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 1148 states have (on average 1.779616724738676) internal successors, (2043), 1211 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:35,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 2043 transitions. [2020-11-12 03:29:35,022 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 2043 transitions. Word has length 51 [2020-11-12 03:29:35,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:35,023 INFO L481 AbstractCegarLoop]: Abstraction has 1212 states and 2043 transitions. [2020-11-12 03:29:35,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:35,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 2043 transitions. [2020-11-12 03:29:35,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-12 03:29:35,025 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:35,025 INFO L494 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:35,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:35,240 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:35,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:35,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1470939467, now seen corresponding path program 9 times [2020-11-12 03:29:35,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:35,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508044315] [2020-11-12 03:29:35,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:35,363 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:35,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508044315] [2020-11-12 03:29:35,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570792823] [2020-11-12 03:29:35,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:35,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-12 03:29:35,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:35,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-12 03:29:35,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:35,487 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:35,500 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:35,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:35,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2020-11-12 03:29:35,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024558487] [2020-11-12 03:29:35,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-12 03:29:35,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:35,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-12 03:29:35,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-11-12 03:29:35,502 INFO L87 Difference]: Start difference. First operand 1212 states and 2043 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:36,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:36,019 INFO L93 Difference]: Finished difference Result 2246 states and 3867 transitions. [2020-11-12 03:29:36,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-12 03:29:36,022 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2020-11-12 03:29:36,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:36,027 INFO L225 Difference]: With dead ends: 2246 [2020-11-12 03:29:36,027 INFO L226 Difference]: Without dead ends: 1674 [2020-11-12 03:29:36,027 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=612, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:29:36,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2020-11-12 03:29:36,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1017. [2020-11-12 03:29:36,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 953 states have (on average 1.714585519412382) internal successors, (1634), 1016 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:36,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1634 transitions. [2020-11-12 03:29:36,060 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1634 transitions. Word has length 51 [2020-11-12 03:29:36,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:36,060 INFO L481 AbstractCegarLoop]: Abstraction has 1017 states and 1634 transitions. [2020-11-12 03:29:36,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:36,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1634 transitions. [2020-11-12 03:29:36,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-12 03:29:36,067 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:36,068 INFO L494 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:36,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:36,284 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:36,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:36,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1241968757, now seen corresponding path program 10 times [2020-11-12 03:29:36,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:36,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928728094] [2020-11-12 03:29:36,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:36,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:36,447 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:36,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928728094] [2020-11-12 03:29:36,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320098517] [2020-11-12 03:29:36,448 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:36,518 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:29:36,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:36,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-12 03:29:36,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:36,553 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:36,583 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:36,593 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:36,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:36,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 15 [2020-11-12 03:29:36,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600986456] [2020-11-12 03:29:36,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-12 03:29:36,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:36,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-12 03:29:36,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-11-12 03:29:36,597 INFO L87 Difference]: Start difference. First operand 1017 states and 1634 transitions. Second operand has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:36,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:36,965 INFO L93 Difference]: Finished difference Result 1925 states and 3178 transitions. [2020-11-12 03:29:36,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-12 03:29:36,966 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2020-11-12 03:29:36,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:36,970 INFO L225 Difference]: With dead ends: 1925 [2020-11-12 03:29:36,970 INFO L226 Difference]: Without dead ends: 1591 [2020-11-12 03:29:36,971 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:29:36,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2020-11-12 03:29:36,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 1092. [2020-11-12 03:29:36,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 1028 states have (on average 1.735408560311284) internal successors, (1784), 1091 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:36,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1784 transitions. [2020-11-12 03:29:36,997 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1784 transitions. Word has length 56 [2020-11-12 03:29:36,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:36,997 INFO L481 AbstractCegarLoop]: Abstraction has 1092 states and 1784 transitions. [2020-11-12 03:29:36,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:36,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1784 transitions. [2020-11-12 03:29:36,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-12 03:29:36,999 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:36,999 INFO L494 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:37,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-11-12 03:29:37,215 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:37,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:37,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1430278829, now seen corresponding path program 11 times [2020-11-12 03:29:37,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:37,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955260988] [2020-11-12 03:29:37,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:37,369 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:37,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955260988] [2020-11-12 03:29:37,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110067138] [2020-11-12 03:29:37,370 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:37,447 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-11-12 03:29:37,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:37,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-12 03:29:37,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:37,504 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:37,511 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:37,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:37,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-11-12 03:29:37,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033940765] [2020-11-12 03:29:37,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-12 03:29:37,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:37,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-12 03:29:37,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-11-12 03:29:37,513 INFO L87 Difference]: Start difference. First operand 1092 states and 1784 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:37,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:37,755 INFO L93 Difference]: Finished difference Result 1954 states and 3434 transitions. [2020-11-12 03:29:37,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-12 03:29:37,755 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2020-11-12 03:29:37,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:37,759 INFO L225 Difference]: With dead ends: 1954 [2020-11-12 03:29:37,759 INFO L226 Difference]: Without dead ends: 1684 [2020-11-12 03:29:37,760 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-11-12 03:29:37,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2020-11-12 03:29:37,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1187. [2020-11-12 03:29:37,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 1123 states have (on average 1.7310774710596617) internal successors, (1944), 1186 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:37,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1944 transitions. [2020-11-12 03:29:37,791 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1944 transitions. Word has length 56 [2020-11-12 03:29:37,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:37,791 INFO L481 AbstractCegarLoop]: Abstraction has 1187 states and 1944 transitions. [2020-11-12 03:29:37,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:37,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1944 transitions. [2020-11-12 03:29:37,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-12 03:29:37,794 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:37,794 INFO L494 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:38,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:38,008 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:38,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:38,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1417961427, now seen corresponding path program 12 times [2020-11-12 03:29:38,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:38,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168317489] [2020-11-12 03:29:38,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:38,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:38,153 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:38,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168317489] [2020-11-12 03:29:38,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170674507] [2020-11-12 03:29:38,154 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:38,229 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-11-12 03:29:38,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:38,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-12 03:29:38,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:38,250 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:29:38,285 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:38,295 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:38,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:38,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-11-12 03:29:38,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088060377] [2020-11-12 03:29:38,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-12 03:29:38,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:38,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-12 03:29:38,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-11-12 03:29:38,297 INFO L87 Difference]: Start difference. First operand 1187 states and 1944 transitions. Second operand has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:38,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:38,747 INFO L93 Difference]: Finished difference Result 1909 states and 3324 transitions. [2020-11-12 03:29:38,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-12 03:29:38,748 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2020-11-12 03:29:38,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:38,754 INFO L225 Difference]: With dead ends: 1909 [2020-11-12 03:29:38,754 INFO L226 Difference]: Without dead ends: 1639 [2020-11-12 03:29:38,755 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:29:38,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2020-11-12 03:29:38,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1237. [2020-11-12 03:29:38,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 1173 states have (on average 1.7254901960784315) internal successors, (2024), 1236 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:38,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 2024 transitions. [2020-11-12 03:29:38,803 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 2024 transitions. Word has length 56 [2020-11-12 03:29:38,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:38,803 INFO L481 AbstractCegarLoop]: Abstraction has 1237 states and 2024 transitions. [2020-11-12 03:29:38,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:38,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 2024 transitions. [2020-11-12 03:29:38,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-12 03:29:38,807 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:38,807 INFO L494 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:39,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-11-12 03:29:39,020 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:39,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:39,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1433389627, now seen corresponding path program 13 times [2020-11-12 03:29:39,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:39,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743466556] [2020-11-12 03:29:39,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:39,234 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:39,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743466556] [2020-11-12 03:29:39,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341197739] [2020-11-12 03:29:39,235 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:39,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-12 03:29:39,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:39,350 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:39,363 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:39,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:39,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-11-12 03:29:39,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569908871] [2020-11-12 03:29:39,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-12 03:29:39,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:39,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-12 03:29:39,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-11-12 03:29:39,365 INFO L87 Difference]: Start difference. First operand 1237 states and 2024 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:39,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:39,674 INFO L93 Difference]: Finished difference Result 1934 states and 3354 transitions. [2020-11-12 03:29:39,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-12 03:29:39,675 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2020-11-12 03:29:39,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:39,678 INFO L225 Difference]: With dead ends: 1934 [2020-11-12 03:29:39,678 INFO L226 Difference]: Without dead ends: 1664 [2020-11-12 03:29:39,679 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:29:39,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2020-11-12 03:29:39,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1287. [2020-11-12 03:29:39,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1223 states have (on average 1.7203597710547833) internal successors, (2104), 1286 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:39,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 2104 transitions. [2020-11-12 03:29:39,705 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 2104 transitions. Word has length 56 [2020-11-12 03:29:39,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:39,705 INFO L481 AbstractCegarLoop]: Abstraction has 1287 states and 2104 transitions. [2020-11-12 03:29:39,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:39,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 2104 transitions. [2020-11-12 03:29:39,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-12 03:29:39,708 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:39,708 INFO L494 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:39,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-11-12 03:29:39,924 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:39,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:39,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1240278277, now seen corresponding path program 14 times [2020-11-12 03:29:39,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:39,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594055030] [2020-11-12 03:29:39,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:40,078 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:40,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594055030] [2020-11-12 03:29:40,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724391903] [2020-11-12 03:29:40,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:40,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:29:40,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:40,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-12 03:29:40,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:40,178 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:29:40,218 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:40,226 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:40,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:40,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-11-12 03:29:40,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015794109] [2020-11-12 03:29:40,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-12 03:29:40,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:40,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-12 03:29:40,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-11-12 03:29:40,228 INFO L87 Difference]: Start difference. First operand 1287 states and 2104 transitions. Second operand has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:40,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:40,721 INFO L93 Difference]: Finished difference Result 2363 states and 4140 transitions. [2020-11-12 03:29:40,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-12 03:29:40,722 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2020-11-12 03:29:40,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:40,725 INFO L225 Difference]: With dead ends: 2363 [2020-11-12 03:29:40,725 INFO L226 Difference]: Without dead ends: 1854 [2020-11-12 03:29:40,726 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:29:40,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2020-11-12 03:29:40,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1312. [2020-11-12 03:29:40,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 1248 states have (on average 1.734775641025641) internal successors, (2165), 1311 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:40,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 2165 transitions. [2020-11-12 03:29:40,756 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 2165 transitions. Word has length 56 [2020-11-12 03:29:40,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:40,756 INFO L481 AbstractCegarLoop]: Abstraction has 1312 states and 2165 transitions. [2020-11-12 03:29:40,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:40,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 2165 transitions. [2020-11-12 03:29:40,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-12 03:29:40,759 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:40,759 INFO L494 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:40,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-11-12 03:29:40,975 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:40,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:40,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1920598855, now seen corresponding path program 15 times [2020-11-12 03:29:40,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:40,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158302287] [2020-11-12 03:29:40,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:41,110 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:41,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158302287] [2020-11-12 03:29:41,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25126956] [2020-11-12 03:29:41,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:41,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-12 03:29:41,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:41,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-12 03:29:41,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:41,215 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:41,221 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:41,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:41,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-11-12 03:29:41,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723730606] [2020-11-12 03:29:41,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-12 03:29:41,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:41,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-12 03:29:41,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-12 03:29:41,224 INFO L87 Difference]: Start difference. First operand 1312 states and 2165 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:41,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:41,596 INFO L93 Difference]: Finished difference Result 3041 states and 4849 transitions. [2020-11-12 03:29:41,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-12 03:29:41,597 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2020-11-12 03:29:41,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:41,603 INFO L225 Difference]: With dead ends: 3041 [2020-11-12 03:29:41,603 INFO L226 Difference]: Without dead ends: 2756 [2020-11-12 03:29:41,604 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:29:41,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2020-11-12 03:29:41,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 1397. [2020-11-12 03:29:41,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1333 states have (on average 1.7726931732933233) internal successors, (2363), 1396 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:41,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 2363 transitions. [2020-11-12 03:29:41,637 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 2363 transitions. Word has length 56 [2020-11-12 03:29:41,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:41,637 INFO L481 AbstractCegarLoop]: Abstraction has 1397 states and 2363 transitions. [2020-11-12 03:29:41,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:41,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 2363 transitions. [2020-11-12 03:29:41,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-12 03:29:41,640 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:41,641 INFO L494 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:41,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-11-12 03:29:41,854 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:41,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:41,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1080621663, now seen corresponding path program 16 times [2020-11-12 03:29:41,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:41,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331105133] [2020-11-12 03:29:41,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:41,984 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:41,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331105133] [2020-11-12 03:29:41,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546318927] [2020-11-12 03:29:41,984 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:42,055 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:29:42,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:42,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-12 03:29:42,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:42,081 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:29:42,107 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:42,114 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:42,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:42,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-11-12 03:29:42,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299311800] [2020-11-12 03:29:42,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-12 03:29:42,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:42,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-12 03:29:42,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-11-12 03:29:42,117 INFO L87 Difference]: Start difference. First operand 1397 states and 2363 transitions. Second operand has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:42,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:42,713 INFO L93 Difference]: Finished difference Result 2376 states and 4157 transitions. [2020-11-12 03:29:42,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-12 03:29:42,713 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2020-11-12 03:29:42,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:42,718 INFO L225 Difference]: With dead ends: 2376 [2020-11-12 03:29:42,718 INFO L226 Difference]: Without dead ends: 1804 [2020-11-12 03:29:42,719 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=252, Invalid=740, Unknown=0, NotChecked=0, Total=992 [2020-11-12 03:29:42,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2020-11-12 03:29:42,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 1212. [2020-11-12 03:29:42,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 1148 states have (on average 1.7195121951219512) internal successors, (1974), 1211 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:42,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1974 transitions. [2020-11-12 03:29:42,746 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1974 transitions. Word has length 56 [2020-11-12 03:29:42,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:42,746 INFO L481 AbstractCegarLoop]: Abstraction has 1212 states and 1974 transitions. [2020-11-12 03:29:42,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:42,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1974 transitions. [2020-11-12 03:29:42,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-12 03:29:42,749 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:42,749 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:42,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-11-12 03:29:42,964 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:42,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:42,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1646291808, now seen corresponding path program 17 times [2020-11-12 03:29:42,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:42,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207967762] [2020-11-12 03:29:42,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:43,119 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:43,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207967762] [2020-11-12 03:29:43,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784452080] [2020-11-12 03:29:43,120 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:43,192 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-11-12 03:29:43,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:43,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-12 03:29:43,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:43,213 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:43,222 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:43,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:43,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-11-12 03:29:43,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201324529] [2020-11-12 03:29:43,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-12 03:29:43,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:43,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-12 03:29:43,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-12 03:29:43,224 INFO L87 Difference]: Start difference. First operand 1212 states and 1974 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:43,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:43,538 INFO L93 Difference]: Finished difference Result 1909 states and 3304 transitions. [2020-11-12 03:29:43,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-12 03:29:43,539 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2020-11-12 03:29:43,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:43,543 INFO L225 Difference]: With dead ends: 1909 [2020-11-12 03:29:43,543 INFO L226 Difference]: Without dead ends: 1639 [2020-11-12 03:29:43,544 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2020-11-12 03:29:43,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2020-11-12 03:29:43,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1252. [2020-11-12 03:29:43,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1188 states have (on average 1.7205387205387206) internal successors, (2044), 1251 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:43,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 2044 transitions. [2020-11-12 03:29:43,599 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 2044 transitions. Word has length 61 [2020-11-12 03:29:43,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:43,599 INFO L481 AbstractCegarLoop]: Abstraction has 1252 states and 2044 transitions. [2020-11-12 03:29:43,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:43,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 2044 transitions. [2020-11-12 03:29:43,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-12 03:29:43,603 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:43,604 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:43,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:43,815 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:43,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:43,816 INFO L82 PathProgramCache]: Analyzing trace with hash 982207136, now seen corresponding path program 18 times [2020-11-12 03:29:43,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:43,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573993485] [2020-11-12 03:29:43,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:43,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:43,980 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:43,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573993485] [2020-11-12 03:29:43,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174730750] [2020-11-12 03:29:43,981 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:44,046 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-11-12 03:29:44,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:44,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-12 03:29:44,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:44,069 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:29:44,084 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:44,095 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:44,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:44,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-11-12 03:29:44,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830227948] [2020-11-12 03:29:44,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-12 03:29:44,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:44,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-12 03:29:44,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-11-12 03:29:44,097 INFO L87 Difference]: Start difference. First operand 1252 states and 2044 transitions. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:44,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:44,506 INFO L93 Difference]: Finished difference Result 2044 states and 3554 transitions. [2020-11-12 03:29:44,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-12 03:29:44,507 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2020-11-12 03:29:44,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:44,511 INFO L225 Difference]: With dead ends: 2044 [2020-11-12 03:29:44,512 INFO L226 Difference]: Without dead ends: 1774 [2020-11-12 03:29:44,512 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=169, Invalid=533, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:29:44,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2020-11-12 03:29:44,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1277. [2020-11-12 03:29:44,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 1213 states have (on average 1.7304204451772465) internal successors, (2099), 1276 states have internal predecessors, (2099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:44,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 2099 transitions. [2020-11-12 03:29:44,540 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 2099 transitions. Word has length 61 [2020-11-12 03:29:44,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:44,540 INFO L481 AbstractCegarLoop]: Abstraction has 1277 states and 2099 transitions. [2020-11-12 03:29:44,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:44,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 2099 transitions. [2020-11-12 03:29:44,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-12 03:29:44,543 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:44,543 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:44,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-11-12 03:29:44,758 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:44,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:44,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1280729022, now seen corresponding path program 19 times [2020-11-12 03:29:44,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:44,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753192682] [2020-11-12 03:29:44,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:44,894 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:44,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753192682] [2020-11-12 03:29:44,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196885586] [2020-11-12 03:29:44,895 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:44,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-12 03:29:44,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:44,984 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:44,991 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:44,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:44,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-11-12 03:29:44,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759705245] [2020-11-12 03:29:44,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-12 03:29:44,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:44,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-12 03:29:44,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-11-12 03:29:44,993 INFO L87 Difference]: Start difference. First operand 1277 states and 2099 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:45,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:45,336 INFO L93 Difference]: Finished difference Result 2059 states and 3564 transitions. [2020-11-12 03:29:45,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-12 03:29:45,337 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2020-11-12 03:29:45,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:45,341 INFO L225 Difference]: With dead ends: 2059 [2020-11-12 03:29:45,341 INFO L226 Difference]: Without dead ends: 1789 [2020-11-12 03:29:45,341 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:29:45,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2020-11-12 03:29:45,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1302. [2020-11-12 03:29:45,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1302 states, 1238 states have (on average 1.739903069466882) internal successors, (2154), 1301 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:45,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 2154 transitions. [2020-11-12 03:29:45,364 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 2154 transitions. Word has length 61 [2020-11-12 03:29:45,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:45,364 INFO L481 AbstractCegarLoop]: Abstraction has 1302 states and 2154 transitions. [2020-11-12 03:29:45,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:45,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 2154 transitions. [2020-11-12 03:29:45,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-12 03:29:45,367 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:45,367 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:45,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:45,582 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:45,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:45,582 INFO L82 PathProgramCache]: Analyzing trace with hash -340570370, now seen corresponding path program 20 times [2020-11-12 03:29:45,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:45,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860747082] [2020-11-12 03:29:45,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:45,726 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:45,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860747082] [2020-11-12 03:29:45,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864501325] [2020-11-12 03:29:45,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:45,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:29:45,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:45,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-12 03:29:45,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:45,827 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:29:45,869 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:45,876 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:45,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:45,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-11-12 03:29:45,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842655782] [2020-11-12 03:29:45,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-12 03:29:45,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:45,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-12 03:29:45,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-11-12 03:29:45,878 INFO L87 Difference]: Start difference. First operand 1302 states and 2154 transitions. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:46,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:46,441 INFO L93 Difference]: Finished difference Result 2488 states and 4350 transitions. [2020-11-12 03:29:46,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-12 03:29:46,442 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2020-11-12 03:29:46,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:46,445 INFO L225 Difference]: With dead ends: 2488 [2020-11-12 03:29:46,446 INFO L226 Difference]: Without dead ends: 1979 [2020-11-12 03:29:46,446 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=224, Invalid=706, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:29:46,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1979 states. [2020-11-12 03:29:46,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1979 to 1327. [2020-11-12 03:29:46,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 1263 states have (on average 1.7537608867775138) internal successors, (2215), 1326 states have internal predecessors, (2215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:46,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 2215 transitions. [2020-11-12 03:29:46,473 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 2215 transitions. Word has length 61 [2020-11-12 03:29:46,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:46,473 INFO L481 AbstractCegarLoop]: Abstraction has 1327 states and 2215 transitions. [2020-11-12 03:29:46,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:46,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 2215 transitions. [2020-11-12 03:29:46,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-12 03:29:46,476 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:46,476 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:46,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-11-12 03:29:46,691 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:46,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:46,691 INFO L82 PathProgramCache]: Analyzing trace with hash 793519794, now seen corresponding path program 21 times [2020-11-12 03:29:46,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:46,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862946599] [2020-11-12 03:29:46,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:46,815 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:46,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862946599] [2020-11-12 03:29:46,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529593471] [2020-11-12 03:29:46,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:46,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-12 03:29:46,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:46,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-12 03:29:46,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:46,931 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:46,937 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:46,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:46,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-11-12 03:29:46,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216707492] [2020-11-12 03:29:46,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-12 03:29:46,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:46,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-12 03:29:46,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-11-12 03:29:46,939 INFO L87 Difference]: Start difference. First operand 1327 states and 2215 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:47,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:47,355 INFO L93 Difference]: Finished difference Result 3166 states and 5034 transitions. [2020-11-12 03:29:47,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-12 03:29:47,356 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2020-11-12 03:29:47,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:47,363 INFO L225 Difference]: With dead ends: 3166 [2020-11-12 03:29:47,363 INFO L226 Difference]: Without dead ends: 2881 [2020-11-12 03:29:47,365 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=230, Invalid=582, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:29:47,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2020-11-12 03:29:47,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 1412. [2020-11-12 03:29:47,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1348 states have (on average 1.790059347181009) internal successors, (2413), 1411 states have internal predecessors, (2413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:47,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 2413 transitions. [2020-11-12 03:29:47,398 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 2413 transitions. Word has length 61 [2020-11-12 03:29:47,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:47,398 INFO L481 AbstractCegarLoop]: Abstraction has 1412 states and 2413 transitions. [2020-11-12 03:29:47,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:47,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 2413 transitions. [2020-11-12 03:29:47,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-12 03:29:47,401 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:47,402 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:47,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:47,616 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:47,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:47,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1633496986, now seen corresponding path program 22 times [2020-11-12 03:29:47,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:47,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671281952] [2020-11-12 03:29:47,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:47,755 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:47,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671281952] [2020-11-12 03:29:47,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358513052] [2020-11-12 03:29:47,755 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:47,825 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:29:47,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:47,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-12 03:29:47,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:47,849 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:29:47,879 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:47,885 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:47,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:47,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2020-11-12 03:29:47,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302351575] [2020-11-12 03:29:47,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-12 03:29:47,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:47,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-12 03:29:47,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-11-12 03:29:47,886 INFO L87 Difference]: Start difference. First operand 1412 states and 2413 transitions. Second operand has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:48,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:48,592 INFO L93 Difference]: Finished difference Result 2546 states and 4387 transitions. [2020-11-12 03:29:48,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-12 03:29:48,592 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2020-11-12 03:29:48,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:48,596 INFO L225 Difference]: With dead ends: 2546 [2020-11-12 03:29:48,596 INFO L226 Difference]: Without dead ends: 1974 [2020-11-12 03:29:48,597 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=300, Invalid=890, Unknown=0, NotChecked=0, Total=1190 [2020-11-12 03:29:48,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2020-11-12 03:29:48,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1167. [2020-11-12 03:29:48,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 1103 states have (on average 1.7171350861287398) internal successors, (1894), 1166 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:48,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1894 transitions. [2020-11-12 03:29:48,623 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1894 transitions. Word has length 61 [2020-11-12 03:29:48,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:48,624 INFO L481 AbstractCegarLoop]: Abstraction has 1167 states and 1894 transitions. [2020-11-12 03:29:48,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:48,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1894 transitions. [2020-11-12 03:29:48,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-12 03:29:48,627 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:48,627 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:48,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-11-12 03:29:48,841 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:48,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:48,842 INFO L82 PathProgramCache]: Analyzing trace with hash 531207804, now seen corresponding path program 23 times [2020-11-12 03:29:48,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:48,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165523364] [2020-11-12 03:29:48,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:49,028 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:49,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165523364] [2020-11-12 03:29:49,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301504519] [2020-11-12 03:29:49,029 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:49,108 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-11-12 03:29:49,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:49,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-12 03:29:49,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:49,168 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:49,200 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:49,211 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:49,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:49,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 17 [2020-11-12 03:29:49,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549448657] [2020-11-12 03:29:49,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-12 03:29:49,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:49,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-12 03:29:49,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-11-12 03:29:49,213 INFO L87 Difference]: Start difference. First operand 1167 states and 1894 transitions. Second operand has 17 states, 17 states have (on average 5.235294117647059) internal successors, (89), 17 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:49,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:49,630 INFO L93 Difference]: Finished difference Result 2125 states and 3538 transitions. [2020-11-12 03:29:49,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-12 03:29:49,631 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.235294117647059) internal successors, (89), 17 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2020-11-12 03:29:49,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:49,635 INFO L225 Difference]: With dead ends: 2125 [2020-11-12 03:29:49,635 INFO L226 Difference]: Without dead ends: 1791 [2020-11-12 03:29:49,636 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=240, Invalid=690, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:29:49,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2020-11-12 03:29:49,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1242. [2020-11-12 03:29:49,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 1178 states have (on average 1.7351443123938879) internal successors, (2044), 1241 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:49,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 2044 transitions. [2020-11-12 03:29:49,660 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 2044 transitions. Word has length 66 [2020-11-12 03:29:49,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:49,661 INFO L481 AbstractCegarLoop]: Abstraction has 1242 states and 2044 transitions. [2020-11-12 03:29:49,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.235294117647059) internal successors, (89), 17 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:49,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 2044 transitions. [2020-11-12 03:29:49,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-12 03:29:49,663 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:49,664 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:49,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:49,879 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:49,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:49,879 INFO L82 PathProgramCache]: Analyzing trace with hash 861460254, now seen corresponding path program 24 times [2020-11-12 03:29:49,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:49,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212388002] [2020-11-12 03:29:49,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:50,052 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:50,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212388002] [2020-11-12 03:29:50,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082332103] [2020-11-12 03:29:50,053 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:50,130 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-11-12 03:29:50,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:50,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-12 03:29:50,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:50,179 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:50,191 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:50,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:50,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-11-12 03:29:50,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856100748] [2020-11-12 03:29:50,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-12 03:29:50,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:50,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-12 03:29:50,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-11-12 03:29:50,194 INFO L87 Difference]: Start difference. First operand 1242 states and 2044 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:50,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:50,504 INFO L93 Difference]: Finished difference Result 2254 states and 3994 transitions. [2020-11-12 03:29:50,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-12 03:29:50,505 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2020-11-12 03:29:50,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:50,509 INFO L225 Difference]: With dead ends: 2254 [2020-11-12 03:29:50,509 INFO L226 Difference]: Without dead ends: 1984 [2020-11-12 03:29:50,509 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:29:50,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2020-11-12 03:29:50,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 1337. [2020-11-12 03:29:50,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 1273 states have (on average 1.7313432835820894) internal successors, (2204), 1336 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:50,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 2204 transitions. [2020-11-12 03:29:50,535 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 2204 transitions. Word has length 66 [2020-11-12 03:29:50,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:50,535 INFO L481 AbstractCegarLoop]: Abstraction has 1337 states and 2204 transitions. [2020-11-12 03:29:50,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:50,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 2204 transitions. [2020-11-12 03:29:50,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-12 03:29:50,538 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:50,538 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:50,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-11-12 03:29:50,749 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:50,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:50,749 INFO L82 PathProgramCache]: Analyzing trace with hash 2012300446, now seen corresponding path program 25 times [2020-11-12 03:29:50,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:50,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441909502] [2020-11-12 03:29:50,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:50,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:50,983 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:50,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441909502] [2020-11-12 03:29:50,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233473432] [2020-11-12 03:29:50,983 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:51,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-12 03:29:51,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:51,072 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:29:51,107 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:51,117 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:51,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:51,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2020-11-12 03:29:51,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254034260] [2020-11-12 03:29:51,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-12 03:29:51,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:51,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-12 03:29:51,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2020-11-12 03:29:51,119 INFO L87 Difference]: Start difference. First operand 1337 states and 2204 transitions. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:51,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:51,541 INFO L93 Difference]: Finished difference Result 2209 states and 3884 transitions. [2020-11-12 03:29:51,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-12 03:29:51,541 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2020-11-12 03:29:51,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:51,544 INFO L225 Difference]: With dead ends: 2209 [2020-11-12 03:29:51,545 INFO L226 Difference]: Without dead ends: 1939 [2020-11-12 03:29:51,545 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:29:51,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2020-11-12 03:29:51,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1387. [2020-11-12 03:29:51,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1387 states, 1323 states have (on average 1.726379440665155) internal successors, (2284), 1386 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:51,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 2284 transitions. [2020-11-12 03:29:51,564 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 2284 transitions. Word has length 66 [2020-11-12 03:29:51,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:51,564 INFO L481 AbstractCegarLoop]: Abstraction has 1387 states and 2284 transitions. [2020-11-12 03:29:51,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:51,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 2284 transitions. [2020-11-12 03:29:51,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-12 03:29:51,567 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:51,567 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:51,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:51,782 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:51,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:51,783 INFO L82 PathProgramCache]: Analyzing trace with hash 836353078, now seen corresponding path program 26 times [2020-11-12 03:29:51,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:51,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280419737] [2020-11-12 03:29:51,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:51,936 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:51,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280419737] [2020-11-12 03:29:51,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176030784] [2020-11-12 03:29:51,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:52,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:29:52,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:52,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-12 03:29:52,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:52,051 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:52,057 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:52,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:52,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-11-12 03:29:52,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592102226] [2020-11-12 03:29:52,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-12 03:29:52,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:52,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-12 03:29:52,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-11-12 03:29:52,059 INFO L87 Difference]: Start difference. First operand 1387 states and 2284 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:52,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:52,426 INFO L93 Difference]: Finished difference Result 2234 states and 3914 transitions. [2020-11-12 03:29:52,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-12 03:29:52,426 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2020-11-12 03:29:52,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:52,430 INFO L225 Difference]: With dead ends: 2234 [2020-11-12 03:29:52,430 INFO L226 Difference]: Without dead ends: 1964 [2020-11-12 03:29:52,431 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:29:52,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2020-11-12 03:29:52,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 1437. [2020-11-12 03:29:52,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1373 states have (on average 1.7217771303714493) internal successors, (2364), 1436 states have internal predecessors, (2364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:52,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 2364 transitions. [2020-11-12 03:29:52,460 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 2364 transitions. Word has length 66 [2020-11-12 03:29:52,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:52,461 INFO L481 AbstractCegarLoop]: Abstraction has 1437 states and 2364 transitions. [2020-11-12 03:29:52,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:52,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 2364 transitions. [2020-11-12 03:29:52,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-12 03:29:52,464 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:52,464 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:52,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-11-12 03:29:52,679 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:52,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:52,680 INFO L82 PathProgramCache]: Analyzing trace with hash 172268406, now seen corresponding path program 27 times [2020-11-12 03:29:52,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:52,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476059801] [2020-11-12 03:29:52,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:52,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:52,855 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:52,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476059801] [2020-11-12 03:29:52,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652321448] [2020-11-12 03:29:52,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:52,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-12 03:29:52,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:52,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-12 03:29:52,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:52,957 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:29:52,995 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:53,004 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:53,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:53,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2020-11-12 03:29:53,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130974168] [2020-11-12 03:29:53,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-12 03:29:53,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:53,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-12 03:29:53,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-11-12 03:29:53,006 INFO L87 Difference]: Start difference. First operand 1437 states and 2364 transitions. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:53,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:53,544 INFO L93 Difference]: Finished difference Result 2234 states and 3894 transitions. [2020-11-12 03:29:53,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-12 03:29:53,544 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2020-11-12 03:29:53,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:53,547 INFO L225 Difference]: With dead ends: 2234 [2020-11-12 03:29:53,547 INFO L226 Difference]: Without dead ends: 1964 [2020-11-12 03:29:53,548 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=227, Invalid=703, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:29:53,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2020-11-12 03:29:53,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 1462. [2020-11-12 03:29:53,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1398 states have (on average 1.7303290414878398) internal successors, (2419), 1461 states have internal predecessors, (2419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:53,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 2419 transitions. [2020-11-12 03:29:53,574 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 2419 transitions. Word has length 66 [2020-11-12 03:29:53,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:53,574 INFO L481 AbstractCegarLoop]: Abstraction has 1462 states and 2419 transitions. [2020-11-12 03:29:53,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:53,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 2419 transitions. [2020-11-12 03:29:53,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-12 03:29:53,576 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:53,577 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:53,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-11-12 03:29:53,790 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:53,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:53,791 INFO L82 PathProgramCache]: Analyzing trace with hash 470790292, now seen corresponding path program 28 times [2020-11-12 03:29:53,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:53,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853049670] [2020-11-12 03:29:53,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:53,942 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:53,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853049670] [2020-11-12 03:29:53,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252157944] [2020-11-12 03:29:53,943 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:54,008 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:29:54,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:54,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-12 03:29:54,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:54,060 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:54,065 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:54,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:54,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-11-12 03:29:54,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329806392] [2020-11-12 03:29:54,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-12 03:29:54,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:54,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-12 03:29:54,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-11-12 03:29:54,067 INFO L87 Difference]: Start difference. First operand 1462 states and 2419 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:54,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:54,499 INFO L93 Difference]: Finished difference Result 2209 states and 3849 transitions. [2020-11-12 03:29:54,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-12 03:29:54,499 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2020-11-12 03:29:54,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:54,502 INFO L225 Difference]: With dead ends: 2209 [2020-11-12 03:29:54,502 INFO L226 Difference]: Without dead ends: 1939 [2020-11-12 03:29:54,503 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:29:54,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2020-11-12 03:29:54,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1487. [2020-11-12 03:29:54,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1487 states, 1423 states have (on average 1.7385804638088544) internal successors, (2474), 1486 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:54,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 2474 transitions. [2020-11-12 03:29:54,529 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 2474 transitions. Word has length 66 [2020-11-12 03:29:54,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:54,530 INFO L481 AbstractCegarLoop]: Abstraction has 1487 states and 2474 transitions. [2020-11-12 03:29:54,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:54,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 2474 transitions. [2020-11-12 03:29:54,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-12 03:29:54,532 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:54,532 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:54,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-11-12 03:29:54,747 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:54,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:54,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1150509100, now seen corresponding path program 29 times [2020-11-12 03:29:54,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:54,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174543223] [2020-11-12 03:29:54,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:54,913 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:54,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174543223] [2020-11-12 03:29:54,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549669649] [2020-11-12 03:29:54,914 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:54,981 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-11-12 03:29:54,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:54,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-12 03:29:54,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:55,013 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:29:55,051 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:55,061 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:55,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:55,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2020-11-12 03:29:55,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070264879] [2020-11-12 03:29:55,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-12 03:29:55,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:55,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-12 03:29:55,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-11-12 03:29:55,063 INFO L87 Difference]: Start difference. First operand 1487 states and 2474 transitions. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:55,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:55,726 INFO L93 Difference]: Finished difference Result 2613 states and 4610 transitions. [2020-11-12 03:29:55,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-12 03:29:55,726 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2020-11-12 03:29:55,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:55,728 INFO L225 Difference]: With dead ends: 2613 [2020-11-12 03:29:55,729 INFO L226 Difference]: Without dead ends: 2104 [2020-11-12 03:29:55,729 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=290, Invalid=900, Unknown=0, NotChecked=0, Total=1190 [2020-11-12 03:29:55,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2104 states. [2020-11-12 03:29:55,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2104 to 1512. [2020-11-12 03:29:55,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1448 states have (on average 1.7506906077348066) internal successors, (2535), 1511 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:55,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 2535 transitions. [2020-11-12 03:29:55,749 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 2535 transitions. Word has length 66 [2020-11-12 03:29:55,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:55,750 INFO L481 AbstractCegarLoop]: Abstraction has 1512 states and 2535 transitions. [2020-11-12 03:29:55,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:55,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 2535 transitions. [2020-11-12 03:29:55,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-12 03:29:55,752 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:55,752 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:55,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-11-12 03:29:55,966 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:55,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:55,966 INFO L82 PathProgramCache]: Analyzing trace with hash -16418936, now seen corresponding path program 30 times [2020-11-12 03:29:55,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:55,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057576248] [2020-11-12 03:29:55,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:55,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:56,132 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:56,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057576248] [2020-11-12 03:29:56,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800254425] [2020-11-12 03:29:56,134 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:56,207 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-11-12 03:29:56,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:56,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-12 03:29:56,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:56,246 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:56,253 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:56,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:56,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-11-12 03:29:56,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019509298] [2020-11-12 03:29:56,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-12 03:29:56,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:56,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-12 03:29:56,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-11-12 03:29:56,255 INFO L87 Difference]: Start difference. First operand 1512 states and 2535 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:56,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:56,745 INFO L93 Difference]: Finished difference Result 3291 states and 5319 transitions. [2020-11-12 03:29:56,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-12 03:29:56,745 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2020-11-12 03:29:56,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:56,748 INFO L225 Difference]: With dead ends: 3291 [2020-11-12 03:29:56,748 INFO L226 Difference]: Without dead ends: 3006 [2020-11-12 03:29:56,749 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:29:56,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2020-11-12 03:29:56,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 1597. [2020-11-12 03:29:56,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1597 states, 1533 states have (on average 1.7827788649706457) internal successors, (2733), 1596 states have internal predecessors, (2733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:56,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1597 states to 1597 states and 2733 transitions. [2020-11-12 03:29:56,778 INFO L78 Accepts]: Start accepts. Automaton has 1597 states and 2733 transitions. Word has length 66 [2020-11-12 03:29:56,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:56,778 INFO L481 AbstractCegarLoop]: Abstraction has 1597 states and 2733 transitions. [2020-11-12 03:29:56,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:56,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1597 states and 2733 transitions. [2020-11-12 03:29:56,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-12 03:29:56,780 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:56,780 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:56,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:56,994 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:56,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:56,994 INFO L82 PathProgramCache]: Analyzing trace with hash 823558256, now seen corresponding path program 31 times [2020-11-12 03:29:56,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:56,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535159656] [2020-11-12 03:29:56,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:57,151 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:57,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535159656] [2020-11-12 03:29:57,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218215683] [2020-11-12 03:29:57,151 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:57,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-12 03:29:57,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:57,247 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:29:57,273 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:57,280 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:57,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:57,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2020-11-12 03:29:57,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154053639] [2020-11-12 03:29:57,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-12 03:29:57,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:57,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-12 03:29:57,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2020-11-12 03:29:57,282 INFO L87 Difference]: Start difference. First operand 1597 states and 2733 transitions. Second operand has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:58,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:58,025 INFO L93 Difference]: Finished difference Result 2626 states and 4627 transitions. [2020-11-12 03:29:58,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-12 03:29:58,025 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2020-11-12 03:29:58,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:58,028 INFO L225 Difference]: With dead ends: 2626 [2020-11-12 03:29:58,028 INFO L226 Difference]: Without dead ends: 2054 [2020-11-12 03:29:58,029 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=357, Invalid=1049, Unknown=0, NotChecked=0, Total=1406 [2020-11-12 03:29:58,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2020-11-12 03:29:58,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 1362. [2020-11-12 03:29:58,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1298 states have (on average 1.7211093990755009) internal successors, (2234), 1361 states have internal predecessors, (2234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:58,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 2234 transitions. [2020-11-12 03:29:58,051 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 2234 transitions. Word has length 66 [2020-11-12 03:29:58,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:58,051 INFO L481 AbstractCegarLoop]: Abstraction has 1362 states and 2234 transitions. [2020-11-12 03:29:58,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:58,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 2234 transitions. [2020-11-12 03:29:58,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-12 03:29:58,053 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:58,053 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:58,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-11-12 03:29:58,254 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:58,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:58,255 INFO L82 PathProgramCache]: Analyzing trace with hash 887352337, now seen corresponding path program 32 times [2020-11-12 03:29:58,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:58,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297223827] [2020-11-12 03:29:58,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:58,442 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:58,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297223827] [2020-11-12 03:29:58,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914144496] [2020-11-12 03:29:58,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:58,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:29:58,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:58,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-12 03:29:58,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:58,554 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:58,564 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:58,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:58,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-11-12 03:29:58,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122298275] [2020-11-12 03:29:58,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-12 03:29:58,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:58,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-12 03:29:58,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-11-12 03:29:58,566 INFO L87 Difference]: Start difference. First operand 1362 states and 2234 transitions. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:58,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:58,946 INFO L93 Difference]: Finished difference Result 2159 states and 3764 transitions. [2020-11-12 03:29:58,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-12 03:29:58,946 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2020-11-12 03:29:58,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:58,949 INFO L225 Difference]: With dead ends: 2159 [2020-11-12 03:29:58,949 INFO L226 Difference]: Without dead ends: 1889 [2020-11-12 03:29:58,950 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:29:58,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2020-11-12 03:29:58,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1402. [2020-11-12 03:29:58,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 1338 states have (on average 1.7219730941704037) internal successors, (2304), 1401 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:58,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 2304 transitions. [2020-11-12 03:29:58,968 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 2304 transitions. Word has length 71 [2020-11-12 03:29:58,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:58,969 INFO L481 AbstractCegarLoop]: Abstraction has 1402 states and 2304 transitions. [2020-11-12 03:29:58,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:58,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 2304 transitions. [2020-11-12 03:29:58,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-12 03:29:58,971 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:58,971 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:59,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2020-11-12 03:29:59,174 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:59,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:59,175 INFO L82 PathProgramCache]: Analyzing trace with hash -2119124143, now seen corresponding path program 33 times [2020-11-12 03:29:59,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:59,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379996130] [2020-11-12 03:29:59,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:59,376 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:59,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379996130] [2020-11-12 03:29:59,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043311963] [2020-11-12 03:29:59,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:59,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-11-12 03:29:59,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:59,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-12 03:29:59,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:59,491 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:29:59,507 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:59,528 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:59,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:59,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2020-11-12 03:29:59,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084958114] [2020-11-12 03:29:59,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-12 03:29:59,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:59,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-12 03:29:59,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-11-12 03:29:59,530 INFO L87 Difference]: Start difference. First operand 1402 states and 2304 transitions. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:59,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:59,985 INFO L93 Difference]: Finished difference Result 2344 states and 4114 transitions. [2020-11-12 03:29:59,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-12 03:29:59,985 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2020-11-12 03:29:59,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:59,987 INFO L225 Difference]: With dead ends: 2344 [2020-11-12 03:29:59,988 INFO L226 Difference]: Without dead ends: 2074 [2020-11-12 03:29:59,988 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=221, Invalid=709, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:29:59,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2020-11-12 03:30:00,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 1427. [2020-11-12 03:30:00,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1427 states, 1363 states have (on average 1.7307410124724871) internal successors, (2359), 1426 states have internal predecessors, (2359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:00,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 2359 transitions. [2020-11-12 03:30:00,005 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 2359 transitions. Word has length 71 [2020-11-12 03:30:00,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:00,006 INFO L481 AbstractCegarLoop]: Abstraction has 1427 states and 2359 transitions. [2020-11-12 03:30:00,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:00,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 2359 transitions. [2020-11-12 03:30:00,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-12 03:30:00,007 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:00,007 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:00,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:00,208 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:00,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:00,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1194492655, now seen corresponding path program 34 times [2020-11-12 03:30:00,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:00,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258549130] [2020-11-12 03:30:00,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:00,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:00,381 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:00,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258549130] [2020-11-12 03:30:00,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828492140] [2020-11-12 03:30:00,381 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:00,457 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:30:00,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:00,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-12 03:30:00,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:00,477 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:00,494 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:00,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:00,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-11-12 03:30:00,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742128906] [2020-11-12 03:30:00,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-12 03:30:00,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:00,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-12 03:30:00,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-11-12 03:30:00,496 INFO L87 Difference]: Start difference. First operand 1427 states and 2359 transitions. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:00,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:00,932 INFO L93 Difference]: Finished difference Result 2359 states and 4124 transitions. [2020-11-12 03:30:00,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-12 03:30:00,933 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2020-11-12 03:30:00,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:00,936 INFO L225 Difference]: With dead ends: 2359 [2020-11-12 03:30:00,936 INFO L226 Difference]: Without dead ends: 2089 [2020-11-12 03:30:00,937 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=231, Invalid=699, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:30:00,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2020-11-12 03:30:00,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 1452. [2020-11-12 03:30:00,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1388 states have (on average 1.739193083573487) internal successors, (2414), 1451 states have internal predecessors, (2414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:00,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 2414 transitions. [2020-11-12 03:30:00,962 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 2414 transitions. Word has length 71 [2020-11-12 03:30:00,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:00,963 INFO L481 AbstractCegarLoop]: Abstraction has 1452 states and 2414 transitions. [2020-11-12 03:30:00,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:00,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 2414 transitions. [2020-11-12 03:30:00,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-12 03:30:00,965 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:00,965 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:01,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2020-11-12 03:30:01,179 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:01,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:01,179 INFO L82 PathProgramCache]: Analyzing trace with hash 530407983, now seen corresponding path program 35 times [2020-11-12 03:30:01,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:01,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320957196] [2020-11-12 03:30:01,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:01,387 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:01,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320957196] [2020-11-12 03:30:01,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471378432] [2020-11-12 03:30:01,388 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:01,457 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-11-12 03:30:01,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:01,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-12 03:30:01,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:01,484 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:01,497 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:01,507 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:01,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:01,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2020-11-12 03:30:01,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137242173] [2020-11-12 03:30:01,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-12 03:30:01,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:01,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-12 03:30:01,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-11-12 03:30:01,509 INFO L87 Difference]: Start difference. First operand 1452 states and 2414 transitions. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:02,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:02,079 INFO L93 Difference]: Finished difference Result 2359 states and 4104 transitions. [2020-11-12 03:30:02,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-12 03:30:02,080 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2020-11-12 03:30:02,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:02,083 INFO L225 Difference]: With dead ends: 2359 [2020-11-12 03:30:02,083 INFO L226 Difference]: Without dead ends: 2089 [2020-11-12 03:30:02,084 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=253, Invalid=803, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 03:30:02,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2020-11-12 03:30:02,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 1477. [2020-11-12 03:30:02,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1477 states, 1413 states have (on average 1.7473460721868366) internal successors, (2469), 1476 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:02,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 2469 transitions. [2020-11-12 03:30:02,102 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 2469 transitions. Word has length 71 [2020-11-12 03:30:02,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:02,102 INFO L481 AbstractCegarLoop]: Abstraction has 1477 states and 2469 transitions. [2020-11-12 03:30:02,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:02,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 2469 transitions. [2020-11-12 03:30:02,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-12 03:30:02,103 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:02,104 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:02,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:02,304 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:02,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:02,305 INFO L82 PathProgramCache]: Analyzing trace with hash 828929869, now seen corresponding path program 36 times [2020-11-12 03:30:02,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:02,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426152858] [2020-11-12 03:30:02,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:02,470 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:02,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426152858] [2020-11-12 03:30:02,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766805362] [2020-11-12 03:30:02,470 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:02,546 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-11-12 03:30:02,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:02,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-12 03:30:02,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:02,570 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:02,579 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:02,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:02,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-11-12 03:30:02,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682380610] [2020-11-12 03:30:02,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-12 03:30:02,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:02,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-12 03:30:02,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-11-12 03:30:02,581 INFO L87 Difference]: Start difference. First operand 1477 states and 2469 transitions. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:03,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:03,081 INFO L93 Difference]: Finished difference Result 2359 states and 4084 transitions. [2020-11-12 03:30:03,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-12 03:30:03,082 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2020-11-12 03:30:03,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:03,085 INFO L225 Difference]: With dead ends: 2359 [2020-11-12 03:30:03,085 INFO L226 Difference]: Without dead ends: 2089 [2020-11-12 03:30:03,086 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=277, Invalid=779, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 03:30:03,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2020-11-12 03:30:03,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 1502. [2020-11-12 03:30:03,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1438 states have (on average 1.7552155771905424) internal successors, (2524), 1501 states have internal predecessors, (2524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:03,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 2524 transitions. [2020-11-12 03:30:03,104 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 2524 transitions. Word has length 71 [2020-11-12 03:30:03,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:03,104 INFO L481 AbstractCegarLoop]: Abstraction has 1502 states and 2524 transitions. [2020-11-12 03:30:03,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:03,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 2524 transitions. [2020-11-12 03:30:03,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-12 03:30:03,106 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:03,106 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:03,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-11-12 03:30:03,307 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:03,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:03,307 INFO L82 PathProgramCache]: Analyzing trace with hash -792369523, now seen corresponding path program 37 times [2020-11-12 03:30:03,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:03,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82205123] [2020-11-12 03:30:03,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:03,473 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:03,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82205123] [2020-11-12 03:30:03,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506148647] [2020-11-12 03:30:03,473 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:03,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-12 03:30:03,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:03,575 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:03,590 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:03,598 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:03,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:03,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2020-11-12 03:30:03,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874888114] [2020-11-12 03:30:03,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-12 03:30:03,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:03,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-12 03:30:03,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-11-12 03:30:03,600 INFO L87 Difference]: Start difference. First operand 1502 states and 2524 transitions. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:04,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:04,305 INFO L93 Difference]: Finished difference Result 2788 states and 4870 transitions. [2020-11-12 03:30:04,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-12 03:30:04,306 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2020-11-12 03:30:04,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:04,308 INFO L225 Difference]: With dead ends: 2788 [2020-11-12 03:30:04,308 INFO L226 Difference]: Without dead ends: 2279 [2020-11-12 03:30:04,309 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=322, Invalid=1010, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 03:30:04,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2279 states. [2020-11-12 03:30:04,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2279 to 1527. [2020-11-12 03:30:04,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1527 states, 1463 states have (on average 1.7669172932330828) internal successors, (2585), 1526 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:04,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 2585 transitions. [2020-11-12 03:30:04,337 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 2585 transitions. Word has length 71 [2020-11-12 03:30:04,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:04,337 INFO L481 AbstractCegarLoop]: Abstraction has 1527 states and 2585 transitions. [2020-11-12 03:30:04,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:04,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 2585 transitions. [2020-11-12 03:30:04,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-12 03:30:04,340 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:04,340 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:04,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:04,556 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:04,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:04,556 INFO L82 PathProgramCache]: Analyzing trace with hash 341720641, now seen corresponding path program 38 times [2020-11-12 03:30:04,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:04,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942264005] [2020-11-12 03:30:04,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:04,720 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:04,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942264005] [2020-11-12 03:30:04,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072959791] [2020-11-12 03:30:04,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:04,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:30:04,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:04,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-12 03:30:04,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:04,816 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:04,821 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:04,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:04,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-11-12 03:30:04,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206143872] [2020-11-12 03:30:04,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-12 03:30:04,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:04,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-12 03:30:04,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-11-12 03:30:04,823 INFO L87 Difference]: Start difference. First operand 1527 states and 2585 transitions. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:05,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:05,379 INFO L93 Difference]: Finished difference Result 3466 states and 5554 transitions. [2020-11-12 03:30:05,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-12 03:30:05,379 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2020-11-12 03:30:05,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:05,382 INFO L225 Difference]: With dead ends: 3466 [2020-11-12 03:30:05,383 INFO L226 Difference]: Without dead ends: 3181 [2020-11-12 03:30:05,383 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=340, Invalid=850, Unknown=0, NotChecked=0, Total=1190 [2020-11-12 03:30:05,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3181 states. [2020-11-12 03:30:05,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3181 to 1612. [2020-11-12 03:30:05,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1548 states have (on average 1.7978036175710594) internal successors, (2783), 1611 states have internal predecessors, (2783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:05,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2783 transitions. [2020-11-12 03:30:05,406 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2783 transitions. Word has length 71 [2020-11-12 03:30:05,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:05,406 INFO L481 AbstractCegarLoop]: Abstraction has 1612 states and 2783 transitions. [2020-11-12 03:30:05,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:05,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2783 transitions. [2020-11-12 03:30:05,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-12 03:30:05,407 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:05,407 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:05,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-11-12 03:30:05,610 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:05,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:05,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1181697833, now seen corresponding path program 39 times [2020-11-12 03:30:05,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:05,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665389975] [2020-11-12 03:30:05,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:05,777 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:05,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665389975] [2020-11-12 03:30:05,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809834063] [2020-11-12 03:30:05,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:05,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-11-12 03:30:05,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:05,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-12 03:30:05,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:05,895 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:05,901 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:05,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:05,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2020-11-12 03:30:05,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064694189] [2020-11-12 03:30:05,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-12 03:30:05,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:05,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-12 03:30:05,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-11-12 03:30:05,902 INFO L87 Difference]: Start difference. First operand 1612 states and 2783 transitions. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:06,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:06,611 INFO L93 Difference]: Finished difference Result 2465 states and 4149 transitions. [2020-11-12 03:30:06,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-12 03:30:06,612 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2020-11-12 03:30:06,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:06,615 INFO L225 Difference]: With dead ends: 2465 [2020-11-12 03:30:06,615 INFO L226 Difference]: Without dead ends: 2069 [2020-11-12 03:30:06,616 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=347, Invalid=985, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 03:30:06,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2020-11-12 03:30:06,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1507. [2020-11-12 03:30:06,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1507 states, 1443 states have (on average 1.7844767844767844) internal successors, (2575), 1506 states have internal predecessors, (2575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:06,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 2575 transitions. [2020-11-12 03:30:06,644 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 2575 transitions. Word has length 71 [2020-11-12 03:30:06,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:06,644 INFO L481 AbstractCegarLoop]: Abstraction has 1507 states and 2575 transitions. [2020-11-12 03:30:06,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:06,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 2575 transitions. [2020-11-12 03:30:06,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-12 03:30:06,647 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:06,647 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:06,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-11-12 03:30:06,861 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:06,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:06,862 INFO L82 PathProgramCache]: Analyzing trace with hash 238478381, now seen corresponding path program 40 times [2020-11-12 03:30:06,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:06,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655700025] [2020-11-12 03:30:06,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:07,095 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:07,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655700025] [2020-11-12 03:30:07,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823387578] [2020-11-12 03:30:07,096 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:07,163 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:30:07,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:07,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-12 03:30:07,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:07,201 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:07,228 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:07,242 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:07,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:07,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 19 [2020-11-12 03:30:07,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535381085] [2020-11-12 03:30:07,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:30:07,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:07,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:30:07,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:30:07,244 INFO L87 Difference]: Start difference. First operand 1507 states and 2575 transitions. Second operand has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:07,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:07,736 INFO L93 Difference]: Finished difference Result 2515 states and 4319 transitions. [2020-11-12 03:30:07,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-12 03:30:07,736 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-11-12 03:30:07,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:07,739 INFO L225 Difference]: With dead ends: 2515 [2020-11-12 03:30:07,739 INFO L226 Difference]: Without dead ends: 2181 [2020-11-12 03:30:07,739 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=308, Invalid=882, Unknown=0, NotChecked=0, Total=1190 [2020-11-12 03:30:07,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2020-11-12 03:30:07,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 1582. [2020-11-12 03:30:07,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1518 states have (on average 1.795125164690382) internal successors, (2725), 1581 states have internal predecessors, (2725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:07,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2725 transitions. [2020-11-12 03:30:07,760 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2725 transitions. Word has length 76 [2020-11-12 03:30:07,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:07,761 INFO L481 AbstractCegarLoop]: Abstraction has 1582 states and 2725 transitions. [2020-11-12 03:30:07,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:07,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2725 transitions. [2020-11-12 03:30:07,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-12 03:30:07,762 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:07,763 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:07,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:07,963 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:07,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:07,964 INFO L82 PathProgramCache]: Analyzing trace with hash -124829105, now seen corresponding path program 41 times [2020-11-12 03:30:07,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:07,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184959184] [2020-11-12 03:30:07,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:08,184 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:08,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184959184] [2020-11-12 03:30:08,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260972506] [2020-11-12 03:30:08,185 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:08,255 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-12 03:30:08,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:08,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-12 03:30:08,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:08,301 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:08,310 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:08,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:08,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2020-11-12 03:30:08,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637004951] [2020-11-12 03:30:08,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-12 03:30:08,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:08,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-12 03:30:08,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-11-12 03:30:08,312 INFO L87 Difference]: Start difference. First operand 1582 states and 2725 transitions. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:08,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:08,677 INFO L93 Difference]: Finished difference Result 2709 states and 4900 transitions. [2020-11-12 03:30:08,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-12 03:30:08,678 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-11-12 03:30:08,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:08,680 INFO L225 Difference]: With dead ends: 2709 [2020-11-12 03:30:08,680 INFO L226 Difference]: Without dead ends: 2439 [2020-11-12 03:30:08,680 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:30:08,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2020-11-12 03:30:08,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 1642. [2020-11-12 03:30:08,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 1578 states have (on average 1.7807351077313054) internal successors, (2810), 1641 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:08,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2810 transitions. [2020-11-12 03:30:08,706 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2810 transitions. Word has length 76 [2020-11-12 03:30:08,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:08,706 INFO L481 AbstractCegarLoop]: Abstraction has 1642 states and 2810 transitions. [2020-11-12 03:30:08,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:08,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2810 transitions. [2020-11-12 03:30:08,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-12 03:30:08,708 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:08,709 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:08,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-11-12 03:30:08,924 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:08,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:08,924 INFO L82 PathProgramCache]: Analyzing trace with hash 832360399, now seen corresponding path program 42 times [2020-11-12 03:30:08,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:08,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185272209] [2020-11-12 03:30:08,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:09,166 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:09,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185272209] [2020-11-12 03:30:09,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838929627] [2020-11-12 03:30:09,167 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:09,243 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-11-12 03:30:09,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:09,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-12 03:30:09,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:09,270 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:09,306 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:09,322 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:09,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:09,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-11-12 03:30:09,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913930963] [2020-11-12 03:30:09,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-12 03:30:09,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:09,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-12 03:30:09,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-11-12 03:30:09,324 INFO L87 Difference]: Start difference. First operand 1642 states and 2810 transitions. Second operand has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:09,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:09,805 INFO L93 Difference]: Finished difference Result 2639 states and 4735 transitions. [2020-11-12 03:30:09,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-12 03:30:09,806 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-11-12 03:30:09,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:09,809 INFO L225 Difference]: With dead ends: 2639 [2020-11-12 03:30:09,809 INFO L226 Difference]: Without dead ends: 2369 [2020-11-12 03:30:09,809 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=792, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 03:30:09,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2369 states. [2020-11-12 03:30:09,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2369 to 1667. [2020-11-12 03:30:09,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1603 states have (on average 1.7685589519650655) internal successors, (2835), 1666 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:09,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2835 transitions. [2020-11-12 03:30:09,828 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2835 transitions. Word has length 76 [2020-11-12 03:30:09,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:09,828 INFO L481 AbstractCegarLoop]: Abstraction has 1667 states and 2835 transitions. [2020-11-12 03:30:09,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:09,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2835 transitions. [2020-11-12 03:30:09,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-12 03:30:09,830 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:09,830 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:10,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:10,032 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:10,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:10,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1617340775, now seen corresponding path program 43 times [2020-11-12 03:30:10,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:10,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171796042] [2020-11-12 03:30:10,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:10,236 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:10,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171796042] [2020-11-12 03:30:10,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777346378] [2020-11-12 03:30:10,237 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:10,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-12 03:30:10,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:10,350 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:10,362 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:10,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:10,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2020-11-12 03:30:10,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891803933] [2020-11-12 03:30:10,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-12 03:30:10,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:10,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-12 03:30:10,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-11-12 03:30:10,364 INFO L87 Difference]: Start difference. First operand 1667 states and 2835 transitions. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:10,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:10,775 INFO L93 Difference]: Finished difference Result 2639 states and 4710 transitions. [2020-11-12 03:30:10,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-12 03:30:10,776 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-11-12 03:30:10,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:10,779 INFO L225 Difference]: With dead ends: 2639 [2020-11-12 03:30:10,779 INFO L226 Difference]: Without dead ends: 2369 [2020-11-12 03:30:10,779 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=229, Invalid=701, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:30:10,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2369 states. [2020-11-12 03:30:10,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2369 to 1692. [2020-11-12 03:30:10,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1692 states, 1628 states have (on average 1.7567567567567568) internal successors, (2860), 1691 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:10,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 2860 transitions. [2020-11-12 03:30:10,799 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 2860 transitions. Word has length 76 [2020-11-12 03:30:10,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:10,799 INFO L481 AbstractCegarLoop]: Abstraction has 1692 states and 2860 transitions. [2020-11-12 03:30:10,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:10,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 2860 transitions. [2020-11-12 03:30:10,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-12 03:30:10,801 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:10,801 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:11,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:11,002 INFO L429 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:11,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:11,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1389135705, now seen corresponding path program 44 times [2020-11-12 03:30:11,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:11,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782236005] [2020-11-12 03:30:11,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:11,216 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:11,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782236005] [2020-11-12 03:30:11,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907244211] [2020-11-12 03:30:11,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:11,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:30:11,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:11,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-12 03:30:11,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:11,330 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:11,374 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:11,383 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:11,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:11,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-11-12 03:30:11,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919214691] [2020-11-12 03:30:11,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-12 03:30:11,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:11,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-12 03:30:11,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-11-12 03:30:11,385 INFO L87 Difference]: Start difference. First operand 1692 states and 2860 transitions. Second operand has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:11,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:11,980 INFO L93 Difference]: Finished difference Result 2614 states and 4635 transitions. [2020-11-12 03:30:11,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-12 03:30:11,981 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-11-12 03:30:11,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:11,984 INFO L225 Difference]: With dead ends: 2614 [2020-11-12 03:30:11,985 INFO L226 Difference]: Without dead ends: 2344 [2020-11-12 03:30:11,985 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=286, Invalid=904, Unknown=0, NotChecked=0, Total=1190 [2020-11-12 03:30:11,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2344 states. [2020-11-12 03:30:12,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2344 to 1692. [2020-11-12 03:30:12,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1692 states, 1628 states have (on average 1.7567567567567568) internal successors, (2860), 1691 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:12,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 2860 transitions. [2020-11-12 03:30:12,006 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 2860 transitions. Word has length 76 [2020-11-12 03:30:12,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:12,006 INFO L481 AbstractCegarLoop]: Abstraction has 1692 states and 2860 transitions. [2020-11-12 03:30:12,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:12,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 2860 transitions. [2020-11-12 03:30:12,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-12 03:30:12,008 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:12,008 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:12,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2020-11-12 03:30:12,209 INFO L429 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:12,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:12,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1924481093, now seen corresponding path program 45 times [2020-11-12 03:30:12,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:12,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139859647] [2020-11-12 03:30:12,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:12,408 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:12,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139859647] [2020-11-12 03:30:12,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483729689] [2020-11-12 03:30:12,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:12,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-11-12 03:30:12,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:12,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 03:30:12,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:12,520 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:12,527 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:12,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:12,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2020-11-12 03:30:12,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399730449] [2020-11-12 03:30:12,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-12 03:30:12,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:12,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-12 03:30:12,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-11-12 03:30:12,529 INFO L87 Difference]: Start difference. First operand 1692 states and 2860 transitions. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:13,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:13,011 INFO L93 Difference]: Finished difference Result 2564 states and 4535 transitions. [2020-11-12 03:30:13,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-12 03:30:13,011 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-11-12 03:30:13,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:13,014 INFO L225 Difference]: With dead ends: 2564 [2020-11-12 03:30:13,014 INFO L226 Difference]: Without dead ends: 2294 [2020-11-12 03:30:13,014 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 03:30:13,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2020-11-12 03:30:13,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 1692. [2020-11-12 03:30:13,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1692 states, 1628 states have (on average 1.7567567567567568) internal successors, (2860), 1691 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:13,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 2860 transitions. [2020-11-12 03:30:13,036 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 2860 transitions. Word has length 76 [2020-11-12 03:30:13,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:13,037 INFO L481 AbstractCegarLoop]: Abstraction has 1692 states and 2860 transitions. [2020-11-12 03:30:13,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:13,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 2860 transitions. [2020-11-12 03:30:13,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-12 03:30:13,039 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:13,039 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:13,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:13,247 INFO L429 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:13,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:13,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1260396421, now seen corresponding path program 46 times [2020-11-12 03:30:13,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:13,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523470899] [2020-11-12 03:30:13,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:13,472 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:13,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523470899] [2020-11-12 03:30:13,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713562085] [2020-11-12 03:30:13,473 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:13,549 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:30:13,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:13,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-12 03:30:13,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:13,579 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:13,613 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:13,621 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:13,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:13,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-11-12 03:30:13,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836673257] [2020-11-12 03:30:13,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-12 03:30:13,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:13,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-12 03:30:13,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-11-12 03:30:13,623 INFO L87 Difference]: Start difference. First operand 1692 states and 2860 transitions. Second operand has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:14,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:14,312 INFO L93 Difference]: Finished difference Result 2514 states and 4435 transitions. [2020-11-12 03:30:14,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-12 03:30:14,313 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-11-12 03:30:14,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:14,316 INFO L225 Difference]: With dead ends: 2514 [2020-11-12 03:30:14,316 INFO L226 Difference]: Without dead ends: 2244 [2020-11-12 03:30:14,317 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=324, Invalid=1008, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 03:30:14,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2244 states. [2020-11-12 03:30:14,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2244 to 1692. [2020-11-12 03:30:14,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1692 states, 1628 states have (on average 1.7567567567567568) internal successors, (2860), 1691 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:14,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 2860 transitions. [2020-11-12 03:30:14,340 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 2860 transitions. Word has length 76 [2020-11-12 03:30:14,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:14,341 INFO L481 AbstractCegarLoop]: Abstraction has 1692 states and 2860 transitions. [2020-11-12 03:30:14,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:14,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 2860 transitions. [2020-11-12 03:30:14,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-12 03:30:14,343 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:14,343 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:14,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-11-12 03:30:14,543 INFO L429 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:14,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:14,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1558918307, now seen corresponding path program 47 times [2020-11-12 03:30:14,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:14,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601578402] [2020-11-12 03:30:14,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:14,751 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:14,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601578402] [2020-11-12 03:30:14,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584066729] [2020-11-12 03:30:14,752 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:14,857 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-11-12 03:30:14,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:14,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-12 03:30:14,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:14,917 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:14,933 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:14,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:14,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2020-11-12 03:30:14,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925046866] [2020-11-12 03:30:14,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-12 03:30:14,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:14,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-12 03:30:14,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-11-12 03:30:14,935 INFO L87 Difference]: Start difference. First operand 1692 states and 2860 transitions. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:15,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:15,485 INFO L93 Difference]: Finished difference Result 2464 states and 4335 transitions. [2020-11-12 03:30:15,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-12 03:30:15,485 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-11-12 03:30:15,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:15,488 INFO L225 Difference]: With dead ends: 2464 [2020-11-12 03:30:15,488 INFO L226 Difference]: Without dead ends: 2194 [2020-11-12 03:30:15,489 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=305, Invalid=885, Unknown=0, NotChecked=0, Total=1190 [2020-11-12 03:30:15,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2194 states. [2020-11-12 03:30:15,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2194 to 1692. [2020-11-12 03:30:15,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1692 states, 1628 states have (on average 1.7567567567567568) internal successors, (2860), 1691 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:15,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 2860 transitions. [2020-11-12 03:30:15,508 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 2860 transitions. Word has length 76 [2020-11-12 03:30:15,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:15,508 INFO L481 AbstractCegarLoop]: Abstraction has 1692 states and 2860 transitions. [2020-11-12 03:30:15,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:15,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 2860 transitions. [2020-11-12 03:30:15,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-12 03:30:15,510 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:15,510 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:15,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-11-12 03:30:15,711 INFO L429 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:15,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:15,712 INFO L82 PathProgramCache]: Analyzing trace with hash -62381085, now seen corresponding path program 48 times [2020-11-12 03:30:15,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:15,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96061012] [2020-11-12 03:30:15,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:15,887 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:15,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96061012] [2020-11-12 03:30:15,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883430374] [2020-11-12 03:30:15,888 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:15,960 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-11-12 03:30:15,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:15,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-12 03:30:15,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:15,985 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:16,020 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:16,029 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:16,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:16,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-11-12 03:30:16,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364817293] [2020-11-12 03:30:16,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-12 03:30:16,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:16,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-12 03:30:16,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-11-12 03:30:16,031 INFO L87 Difference]: Start difference. First operand 1692 states and 2860 transitions. Second operand has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:16,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:16,862 INFO L93 Difference]: Finished difference Result 2863 states and 5080 transitions. [2020-11-12 03:30:16,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-12 03:30:16,863 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-11-12 03:30:16,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:16,865 INFO L225 Difference]: With dead ends: 2863 [2020-11-12 03:30:16,865 INFO L226 Difference]: Without dead ends: 2354 [2020-11-12 03:30:16,866 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=401, Invalid=1239, Unknown=0, NotChecked=0, Total=1640 [2020-11-12 03:30:16,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2020-11-12 03:30:16,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 1712. [2020-11-12 03:30:16,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1712 states, 1648 states have (on average 1.762742718446602) internal successors, (2905), 1711 states have internal predecessors, (2905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:16,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1712 states to 1712 states and 2905 transitions. [2020-11-12 03:30:16,886 INFO L78 Accepts]: Start accepts. Automaton has 1712 states and 2905 transitions. Word has length 76 [2020-11-12 03:30:16,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:16,886 INFO L481 AbstractCegarLoop]: Abstraction has 1712 states and 2905 transitions. [2020-11-12 03:30:16,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:16,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1712 states and 2905 transitions. [2020-11-12 03:30:16,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-12 03:30:16,888 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:16,888 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:17,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2020-11-12 03:30:17,089 INFO L429 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:17,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:17,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1071709079, now seen corresponding path program 49 times [2020-11-12 03:30:17,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:17,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478217814] [2020-11-12 03:30:17,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:17,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:17,269 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:17,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478217814] [2020-11-12 03:30:17,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24913495] [2020-11-12 03:30:17,269 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:17,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-12 03:30:17,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:17,382 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:17,391 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:17,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:17,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2020-11-12 03:30:17,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564955474] [2020-11-12 03:30:17,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-12 03:30:17,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:17,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-12 03:30:17,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-11-12 03:30:17,393 INFO L87 Difference]: Start difference. First operand 1712 states and 2905 transitions. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:17,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:17,980 INFO L93 Difference]: Finished difference Result 3541 states and 5789 transitions. [2020-11-12 03:30:17,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-12 03:30:17,980 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-11-12 03:30:17,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:17,984 INFO L225 Difference]: With dead ends: 3541 [2020-11-12 03:30:17,984 INFO L226 Difference]: Without dead ends: 3256 [2020-11-12 03:30:17,985 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=368, Invalid=964, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 03:30:17,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3256 states. [2020-11-12 03:30:18,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3256 to 1797. [2020-11-12 03:30:18,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1733 states have (on average 1.790536641661858) internal successors, (3103), 1796 states have internal predecessors, (3103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:18,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 3103 transitions. [2020-11-12 03:30:18,019 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 3103 transitions. Word has length 76 [2020-11-12 03:30:18,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:18,019 INFO L481 AbstractCegarLoop]: Abstraction has 1797 states and 3103 transitions. [2020-11-12 03:30:18,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:18,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 3103 transitions. [2020-11-12 03:30:18,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-12 03:30:18,022 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:18,022 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:18,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-11-12 03:30:18,239 INFO L429 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:18,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:18,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1911686271, now seen corresponding path program 50 times [2020-11-12 03:30:18,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:18,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189074320] [2020-11-12 03:30:18,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:18,419 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:18,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189074320] [2020-11-12 03:30:18,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263544183] [2020-11-12 03:30:18,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:18,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:30:18,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:18,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-12 03:30:18,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:18,555 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:18,563 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:18,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:18,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-11-12 03:30:18,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832496240] [2020-11-12 03:30:18,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-12 03:30:18,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:18,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-12 03:30:18,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-11-12 03:30:18,564 INFO L87 Difference]: Start difference. First operand 1797 states and 3103 transitions. Second operand has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:19,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:19,439 INFO L93 Difference]: Finished difference Result 2956 states and 5225 transitions. [2020-11-12 03:30:19,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-12 03:30:19,439 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-11-12 03:30:19,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:19,442 INFO L225 Difference]: With dead ends: 2956 [2020-11-12 03:30:19,443 INFO L226 Difference]: Without dead ends: 2384 [2020-11-12 03:30:19,443 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=405, Invalid=1317, Unknown=0, NotChecked=0, Total=1722 [2020-11-12 03:30:19,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2384 states. [2020-11-12 03:30:19,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2384 to 1692. [2020-11-12 03:30:19,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1692 states, 1628 states have (on average 1.7782555282555284) internal successors, (2895), 1691 states have internal predecessors, (2895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:19,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 2895 transitions. [2020-11-12 03:30:19,466 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 2895 transitions. Word has length 76 [2020-11-12 03:30:19,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:19,466 INFO L481 AbstractCegarLoop]: Abstraction has 1692 states and 2895 transitions. [2020-11-12 03:30:19,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:19,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 2895 transitions. [2020-11-12 03:30:19,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-12 03:30:19,469 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:19,469 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:19,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:19,676 INFO L429 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:19,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:19,676 INFO L82 PathProgramCache]: Analyzing trace with hash -77134974, now seen corresponding path program 51 times [2020-11-12 03:30:19,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:19,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841020795] [2020-11-12 03:30:19,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:19,911 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:19,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841020795] [2020-11-12 03:30:19,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837854344] [2020-11-12 03:30:19,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:20,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-11-12 03:30:20,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:20,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-12 03:30:20,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:20,043 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:20,056 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:20,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:20,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2020-11-12 03:30:20,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131697692] [2020-11-12 03:30:20,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-12 03:30:20,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:20,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-12 03:30:20,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-11-12 03:30:20,058 INFO L87 Difference]: Start difference. First operand 1692 states and 2895 transitions. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:20,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:20,528 INFO L93 Difference]: Finished difference Result 2564 states and 4570 transitions. [2020-11-12 03:30:20,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-12 03:30:20,529 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-11-12 03:30:20,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:20,532 INFO L225 Difference]: With dead ends: 2564 [2020-11-12 03:30:20,532 INFO L226 Difference]: Without dead ends: 2294 [2020-11-12 03:30:20,532 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=262, Invalid=794, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 03:30:20,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2020-11-12 03:30:20,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 1707. [2020-11-12 03:30:20,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1643 states have (on average 1.7711503347534996) internal successors, (2910), 1706 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:20,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2910 transitions. [2020-11-12 03:30:20,551 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2910 transitions. Word has length 81 [2020-11-12 03:30:20,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:20,551 INFO L481 AbstractCegarLoop]: Abstraction has 1707 states and 2910 transitions. [2020-11-12 03:30:20,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:20,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2910 transitions. [2020-11-12 03:30:20,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-12 03:30:20,553 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:20,553 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:20,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:20,754 INFO L429 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:20,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:20,755 INFO L82 PathProgramCache]: Analyzing trace with hash -555105598, now seen corresponding path program 52 times [2020-11-12 03:30:20,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:20,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141069611] [2020-11-12 03:30:20,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:20,994 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:20,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141069611] [2020-11-12 03:30:20,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755144255] [2020-11-12 03:30:20,994 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:21,069 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:30:21,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:21,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-12 03:30:21,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:21,095 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:21,137 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:21,149 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:21,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:21,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2020-11-12 03:30:21,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295138662] [2020-11-12 03:30:21,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-12 03:30:21,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:21,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-12 03:30:21,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2020-11-12 03:30:21,151 INFO L87 Difference]: Start difference. First operand 1707 states and 2910 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:21,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:21,743 INFO L93 Difference]: Finished difference Result 2774 states and 4965 transitions. [2020-11-12 03:30:21,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-12 03:30:21,744 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-11-12 03:30:21,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:21,747 INFO L225 Difference]: With dead ends: 2774 [2020-11-12 03:30:21,747 INFO L226 Difference]: Without dead ends: 2504 [2020-11-12 03:30:21,748 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=305, Invalid=955, Unknown=0, NotChecked=0, Total=1260 [2020-11-12 03:30:21,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2504 states. [2020-11-12 03:30:21,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2504 to 1707. [2020-11-12 03:30:21,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1643 states have (on average 1.7711503347534996) internal successors, (2910), 1706 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:21,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2910 transitions. [2020-11-12 03:30:21,768 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2910 transitions. Word has length 81 [2020-11-12 03:30:21,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:21,768 INFO L481 AbstractCegarLoop]: Abstraction has 1707 states and 2910 transitions. [2020-11-12 03:30:21,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:21,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2910 transitions. [2020-11-12 03:30:21,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-12 03:30:21,770 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:21,771 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:21,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:21,972 INFO L429 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:21,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:21,973 INFO L82 PathProgramCache]: Analyzing trace with hash 591731936, now seen corresponding path program 53 times [2020-11-12 03:30:21,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:21,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114473643] [2020-11-12 03:30:21,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:22,190 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:22,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114473643] [2020-11-12 03:30:22,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515243098] [2020-11-12 03:30:22,191 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:22,269 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-12 03:30:22,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:22,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-12 03:30:22,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:22,320 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:22,333 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:22,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:22,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2020-11-12 03:30:22,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858944948] [2020-11-12 03:30:22,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-12 03:30:22,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:22,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-12 03:30:22,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-11-12 03:30:22,335 INFO L87 Difference]: Start difference. First operand 1707 states and 2910 transitions. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:22,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:22,827 INFO L93 Difference]: Finished difference Result 2764 states and 4920 transitions. [2020-11-12 03:30:22,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-12 03:30:22,828 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-11-12 03:30:22,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:22,831 INFO L225 Difference]: With dead ends: 2764 [2020-11-12 03:30:22,832 INFO L226 Difference]: Without dead ends: 2494 [2020-11-12 03:30:22,832 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2020-11-12 03:30:22,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2494 states. [2020-11-12 03:30:22,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2494 to 1707. [2020-11-12 03:30:22,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1643 states have (on average 1.7711503347534996) internal successors, (2910), 1706 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:22,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2910 transitions. [2020-11-12 03:30:22,855 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2910 transitions. Word has length 81 [2020-11-12 03:30:22,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:22,855 INFO L481 AbstractCegarLoop]: Abstraction has 1707 states and 2910 transitions. [2020-11-12 03:30:22,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:22,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2910 transitions. [2020-11-12 03:30:22,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-12 03:30:22,858 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:22,858 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:23,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-11-12 03:30:23,074 INFO L429 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:23,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:23,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1880222752, now seen corresponding path program 54 times [2020-11-12 03:30:23,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:23,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875896529] [2020-11-12 03:30:23,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:23,303 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:23,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875896529] [2020-11-12 03:30:23,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590920644] [2020-11-12 03:30:23,304 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:23,382 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-11-12 03:30:23,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:23,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-12 03:30:23,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:23,409 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:23,449 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:23,457 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:23,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:23,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2020-11-12 03:30:23,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119977237] [2020-11-12 03:30:23,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-12 03:30:23,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:23,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-12 03:30:23,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-11-12 03:30:23,459 INFO L87 Difference]: Start difference. First operand 1707 states and 2910 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:24,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:24,124 INFO L93 Difference]: Finished difference Result 2739 states and 4845 transitions. [2020-11-12 03:30:24,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-12 03:30:24,125 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-11-12 03:30:24,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:24,128 INFO L225 Difference]: With dead ends: 2739 [2020-11-12 03:30:24,129 INFO L226 Difference]: Without dead ends: 2469 [2020-11-12 03:30:24,129 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=334, Invalid=1072, Unknown=0, NotChecked=0, Total=1406 [2020-11-12 03:30:24,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2020-11-12 03:30:24,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 1707. [2020-11-12 03:30:24,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1643 states have (on average 1.7711503347534996) internal successors, (2910), 1706 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:24,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2910 transitions. [2020-11-12 03:30:24,149 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2910 transitions. Word has length 81 [2020-11-12 03:30:24,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:24,149 INFO L481 AbstractCegarLoop]: Abstraction has 1707 states and 2910 transitions. [2020-11-12 03:30:24,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:24,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2910 transitions. [2020-11-12 03:30:24,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-12 03:30:24,151 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:24,151 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:24,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:24,356 INFO L429 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:24,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:24,357 INFO L82 PathProgramCache]: Analyzing trace with hash 898872254, now seen corresponding path program 55 times [2020-11-12 03:30:24,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:24,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794130105] [2020-11-12 03:30:24,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:24,562 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:24,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794130105] [2020-11-12 03:30:24,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141102455] [2020-11-12 03:30:24,563 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:24,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-12 03:30:24,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:24,674 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:24,684 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:24,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:24,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2020-11-12 03:30:24,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549275696] [2020-11-12 03:30:24,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-12 03:30:24,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:24,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-12 03:30:24,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-11-12 03:30:24,686 INFO L87 Difference]: Start difference. First operand 1707 states and 2910 transitions. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:25,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:25,265 INFO L93 Difference]: Finished difference Result 2714 states and 4770 transitions. [2020-11-12 03:30:25,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-12 03:30:25,266 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-11-12 03:30:25,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:25,270 INFO L225 Difference]: With dead ends: 2714 [2020-11-12 03:30:25,270 INFO L226 Difference]: Without dead ends: 2444 [2020-11-12 03:30:25,271 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=354, Invalid=1052, Unknown=0, NotChecked=0, Total=1406 [2020-11-12 03:30:25,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2444 states. [2020-11-12 03:30:25,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2444 to 1707. [2020-11-12 03:30:25,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1643 states have (on average 1.7711503347534996) internal successors, (2910), 1706 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:25,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2910 transitions. [2020-11-12 03:30:25,292 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2910 transitions. Word has length 81 [2020-11-12 03:30:25,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:25,292 INFO L481 AbstractCegarLoop]: Abstraction has 1707 states and 2910 transitions. [2020-11-12 03:30:25,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:25,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2910 transitions. [2020-11-12 03:30:25,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-12 03:30:25,294 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:25,294 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:25,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-11-12 03:30:25,498 INFO L429 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:25,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:25,498 INFO L82 PathProgramCache]: Analyzing trace with hash 234787582, now seen corresponding path program 56 times [2020-11-12 03:30:25,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:25,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437177920] [2020-11-12 03:30:25,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:25,724 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:25,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437177920] [2020-11-12 03:30:25,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200390811] [2020-11-12 03:30:25,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:25,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:30:25,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:25,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-12 03:30:25,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:25,826 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:25,867 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:25,878 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:25,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:25,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2020-11-12 03:30:25,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070204104] [2020-11-12 03:30:25,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-12 03:30:25,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:25,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-12 03:30:25,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-11-12 03:30:25,880 INFO L87 Difference]: Start difference. First operand 1707 states and 2910 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:26,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:26,647 INFO L93 Difference]: Finished difference Result 2689 states and 4695 transitions. [2020-11-12 03:30:26,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-12 03:30:26,648 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-11-12 03:30:26,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:26,651 INFO L225 Difference]: With dead ends: 2689 [2020-11-12 03:30:26,651 INFO L226 Difference]: Without dead ends: 2419 [2020-11-12 03:30:26,651 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=379, Invalid=1181, Unknown=0, NotChecked=0, Total=1560 [2020-11-12 03:30:26,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2419 states. [2020-11-12 03:30:26,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2419 to 1707. [2020-11-12 03:30:26,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1643 states have (on average 1.7711503347534996) internal successors, (2910), 1706 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:26,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2910 transitions. [2020-11-12 03:30:26,672 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2910 transitions. Word has length 81 [2020-11-12 03:30:26,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:26,673 INFO L481 AbstractCegarLoop]: Abstraction has 1707 states and 2910 transitions. [2020-11-12 03:30:26,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:26,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2910 transitions. [2020-11-12 03:30:26,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-12 03:30:26,675 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:26,675 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:26,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:26,882 INFO L429 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:26,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:26,882 INFO L82 PathProgramCache]: Analyzing trace with hash 533309468, now seen corresponding path program 57 times [2020-11-12 03:30:26,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:26,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842920049] [2020-11-12 03:30:26,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:27,087 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:27,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842920049] [2020-11-12 03:30:27,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234766722] [2020-11-12 03:30:27,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:27,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-11-12 03:30:27,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:27,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-12 03:30:27,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:27,196 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:27,204 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:27,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:27,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2020-11-12 03:30:27,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547651302] [2020-11-12 03:30:27,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-12 03:30:27,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:27,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-12 03:30:27,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-11-12 03:30:27,205 INFO L87 Difference]: Start difference. First operand 1707 states and 2910 transitions. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:27,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:27,859 INFO L93 Difference]: Finished difference Result 2664 states and 4620 transitions. [2020-11-12 03:30:27,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-12 03:30:27,860 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-11-12 03:30:27,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:27,863 INFO L225 Difference]: With dead ends: 2664 [2020-11-12 03:30:27,863 INFO L226 Difference]: Without dead ends: 2394 [2020-11-12 03:30:27,863 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=413, Invalid=1147, Unknown=0, NotChecked=0, Total=1560 [2020-11-12 03:30:27,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2394 states. [2020-11-12 03:30:27,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2394 to 1707. [2020-11-12 03:30:27,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1643 states have (on average 1.7711503347534996) internal successors, (2910), 1706 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:27,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2910 transitions. [2020-11-12 03:30:27,885 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2910 transitions. Word has length 81 [2020-11-12 03:30:27,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:27,885 INFO L481 AbstractCegarLoop]: Abstraction has 1707 states and 2910 transitions. [2020-11-12 03:30:27,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:27,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2910 transitions. [2020-11-12 03:30:27,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-12 03:30:27,887 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:27,887 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:28,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2020-11-12 03:30:28,092 INFO L429 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:28,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:28,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1087989924, now seen corresponding path program 58 times [2020-11-12 03:30:28,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:28,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053407418] [2020-11-12 03:30:28,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:28,292 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:28,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053407418] [2020-11-12 03:30:28,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868136856] [2020-11-12 03:30:28,292 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:28,365 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:30:28,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:28,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-12 03:30:28,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:28,393 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:28,425 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:28,434 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:28,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:28,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2020-11-12 03:30:28,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967396161] [2020-11-12 03:30:28,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-12 03:30:28,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:28,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-12 03:30:28,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2020-11-12 03:30:28,435 INFO L87 Difference]: Start difference. First operand 1707 states and 2910 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:29,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:29,286 INFO L93 Difference]: Finished difference Result 2704 states and 4662 transitions. [2020-11-12 03:30:29,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-12 03:30:29,286 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-11-12 03:30:29,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:29,290 INFO L225 Difference]: With dead ends: 2704 [2020-11-12 03:30:29,290 INFO L226 Difference]: Without dead ends: 2434 [2020-11-12 03:30:29,290 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=440, Invalid=1282, Unknown=0, NotChecked=0, Total=1722 [2020-11-12 03:30:29,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2020-11-12 03:30:29,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 1727. [2020-11-12 03:30:29,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1727 states, 1663 states have (on average 1.7769092002405291) internal successors, (2955), 1726 states have internal predecessors, (2955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:29,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2955 transitions. [2020-11-12 03:30:29,314 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2955 transitions. Word has length 81 [2020-11-12 03:30:29,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:29,314 INFO L481 AbstractCegarLoop]: Abstraction has 1727 states and 2955 transitions. [2020-11-12 03:30:29,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:29,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2955 transitions. [2020-11-12 03:30:29,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-12 03:30:29,317 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:29,317 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:29,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:29,532 INFO L429 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:29,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:29,532 INFO L82 PathProgramCache]: Analyzing trace with hash 46100240, now seen corresponding path program 59 times [2020-11-12 03:30:29,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:29,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645106336] [2020-11-12 03:30:29,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:29,740 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:29,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645106336] [2020-11-12 03:30:29,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433568408] [2020-11-12 03:30:29,741 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:29,817 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-12 03:30:29,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:29,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-12 03:30:29,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:29,880 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:29,889 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:29,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:29,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2020-11-12 03:30:29,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636851239] [2020-11-12 03:30:29,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-12 03:30:29,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:29,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-12 03:30:29,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-11-12 03:30:29,891 INFO L87 Difference]: Start difference. First operand 1727 states and 2955 transitions. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:30,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:30,584 INFO L93 Difference]: Finished difference Result 3766 states and 6074 transitions. [2020-11-12 03:30:30,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-12 03:30:30,584 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-11-12 03:30:30,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:30,588 INFO L225 Difference]: With dead ends: 3766 [2020-11-12 03:30:30,588 INFO L226 Difference]: Without dead ends: 3481 [2020-11-12 03:30:30,588 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=489, Invalid=1233, Unknown=0, NotChecked=0, Total=1722 [2020-11-12 03:30:30,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3481 states. [2020-11-12 03:30:30,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3481 to 1812. [2020-11-12 03:30:30,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1812 states, 1748 states have (on average 1.8037757437070938) internal successors, (3153), 1811 states have internal predecessors, (3153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:30,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 3153 transitions. [2020-11-12 03:30:30,612 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 3153 transitions. Word has length 81 [2020-11-12 03:30:30,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:30,612 INFO L481 AbstractCegarLoop]: Abstraction has 1812 states and 3153 transitions. [2020-11-12 03:30:30,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:30,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 3153 transitions. [2020-11-12 03:30:30,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-12 03:30:30,613 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:30,614 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:30,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2020-11-12 03:30:30,814 INFO L429 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:30,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:30,815 INFO L82 PathProgramCache]: Analyzing trace with hash 886077432, now seen corresponding path program 60 times [2020-11-12 03:30:30,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:30,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430244771] [2020-11-12 03:30:30,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:31,007 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:31,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430244771] [2020-11-12 03:30:31,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877939454] [2020-11-12 03:30:31,008 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:31,083 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-11-12 03:30:31,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:31,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-12 03:30:31,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:31,149 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:31,156 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:31,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:31,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2020-11-12 03:30:31,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365719961] [2020-11-12 03:30:31,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-12 03:30:31,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:31,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-12 03:30:31,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-11-12 03:30:31,158 INFO L87 Difference]: Start difference. First operand 1812 states and 3153 transitions. Second operand has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:32,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:32,176 INFO L93 Difference]: Finished difference Result 3146 states and 5427 transitions. [2020-11-12 03:30:32,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 03:30:32,176 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-11-12 03:30:32,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:32,179 INFO L225 Difference]: With dead ends: 3146 [2020-11-12 03:30:32,179 INFO L226 Difference]: Without dead ends: 2574 [2020-11-12 03:30:32,180 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=521, Invalid=1641, Unknown=0, NotChecked=0, Total=2162 [2020-11-12 03:30:32,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2020-11-12 03:30:32,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 1467. [2020-11-12 03:30:32,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1467 states, 1403 states have (on average 1.720598717034925) internal successors, (2414), 1466 states have internal predecessors, (2414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:32,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1467 states to 1467 states and 2414 transitions. [2020-11-12 03:30:32,198 INFO L78 Accepts]: Start accepts. Automaton has 1467 states and 2414 transitions. Word has length 81 [2020-11-12 03:30:32,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:32,198 INFO L481 AbstractCegarLoop]: Abstraction has 1467 states and 2414 transitions. [2020-11-12 03:30:32,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:32,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1467 states and 2414 transitions. [2020-11-12 03:30:32,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 03:30:32,199 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:32,199 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:32,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2020-11-12 03:30:32,400 INFO L429 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:32,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:32,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1402500962, now seen corresponding path program 61 times [2020-11-12 03:30:32,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:32,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463639486] [2020-11-12 03:30:32,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:32,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:32,686 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:32,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463639486] [2020-11-12 03:30:32,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35506818] [2020-11-12 03:30:32,687 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:32,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-12 03:30:32,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:32,813 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:32,843 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:32,855 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:32,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:32,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 21 [2020-11-12 03:30:32,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130954109] [2020-11-12 03:30:32,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-12 03:30:32,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:32,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-12 03:30:32,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2020-11-12 03:30:32,857 INFO L87 Difference]: Start difference. First operand 1467 states and 2414 transitions. Second operand has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:33,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:33,431 INFO L93 Difference]: Finished difference Result 2525 states and 4258 transitions. [2020-11-12 03:30:33,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-12 03:30:33,432 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-11-12 03:30:33,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:33,434 INFO L225 Difference]: With dead ends: 2525 [2020-11-12 03:30:33,434 INFO L226 Difference]: Without dead ends: 2191 [2020-11-12 03:30:33,435 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=386, Invalid=1096, Unknown=0, NotChecked=0, Total=1482 [2020-11-12 03:30:33,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2191 states. [2020-11-12 03:30:33,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2191 to 1542. [2020-11-12 03:30:33,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1542 states, 1478 states have (on average 1.7347767253044655) internal successors, (2564), 1541 states have internal predecessors, (2564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:33,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2564 transitions. [2020-11-12 03:30:33,452 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2564 transitions. Word has length 86 [2020-11-12 03:30:33,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:33,452 INFO L481 AbstractCegarLoop]: Abstraction has 1542 states and 2564 transitions. [2020-11-12 03:30:33,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:33,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2564 transitions. [2020-11-12 03:30:33,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 03:30:33,454 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:33,454 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:33,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:33,655 INFO L429 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:33,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:33,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1220682816, now seen corresponding path program 62 times [2020-11-12 03:30:33,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:33,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400897244] [2020-11-12 03:30:33,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:33,937 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:33,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400897244] [2020-11-12 03:30:33,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463543196] [2020-11-12 03:30:33,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:34,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:30:34,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:34,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-12 03:30:34,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:34,056 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:34,066 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:34,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:34,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-11-12 03:30:34,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507629078] [2020-11-12 03:30:34,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-12 03:30:34,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:34,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-12 03:30:34,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-11-12 03:30:34,068 INFO L87 Difference]: Start difference. First operand 1542 states and 2564 transitions. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:34,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:34,505 INFO L93 Difference]: Finished difference Result 2854 states and 5114 transitions. [2020-11-12 03:30:34,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-12 03:30:34,505 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-11-12 03:30:34,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:34,508 INFO L225 Difference]: With dead ends: 2854 [2020-11-12 03:30:34,508 INFO L226 Difference]: Without dead ends: 2584 [2020-11-12 03:30:34,508 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=282, Invalid=774, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 03:30:34,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2020-11-12 03:30:34,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 1637. [2020-11-12 03:30:34,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1637 states, 1573 states have (on average 1.7317228226319135) internal successors, (2724), 1636 states have internal predecessors, (2724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:34,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 2724 transitions. [2020-11-12 03:30:34,529 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 2724 transitions. Word has length 86 [2020-11-12 03:30:34,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:34,529 INFO L481 AbstractCegarLoop]: Abstraction has 1637 states and 2724 transitions. [2020-11-12 03:30:34,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:34,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 2724 transitions. [2020-11-12 03:30:34,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 03:30:34,530 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:34,531 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:34,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:34,731 INFO L429 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:34,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:34,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1101213248, now seen corresponding path program 63 times [2020-11-12 03:30:34,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:34,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182673087] [2020-11-12 03:30:34,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:35,015 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:35,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182673087] [2020-11-12 03:30:35,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018107828] [2020-11-12 03:30:35,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:35,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-11-12 03:30:35,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:35,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-12 03:30:35,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:35,121 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:35,163 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:35,174 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:35,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:35,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-11-12 03:30:35,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513769304] [2020-11-12 03:30:35,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:30:35,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:35,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:30:35,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:30:35,175 INFO L87 Difference]: Start difference. First operand 1637 states and 2724 transitions. Second operand has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:35,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:35,769 INFO L93 Difference]: Finished difference Result 2809 states and 5004 transitions. [2020-11-12 03:30:35,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-12 03:30:35,770 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-11-12 03:30:35,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:35,773 INFO L225 Difference]: With dead ends: 2809 [2020-11-12 03:30:35,774 INFO L226 Difference]: Without dead ends: 2539 [2020-11-12 03:30:35,774 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=335, Invalid=997, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 03:30:35,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2020-11-12 03:30:35,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 1687. [2020-11-12 03:30:35,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1623 states have (on average 1.7276648182378311) internal successors, (2804), 1686 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:35,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2804 transitions. [2020-11-12 03:30:35,795 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2804 transitions. Word has length 86 [2020-11-12 03:30:35,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:35,795 INFO L481 AbstractCegarLoop]: Abstraction has 1687 states and 2804 transitions. [2020-11-12 03:30:35,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:35,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2804 transitions. [2020-11-12 03:30:35,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 03:30:35,796 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:35,796 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:35,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2020-11-12 03:30:35,997 INFO L429 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:35,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:35,998 INFO L82 PathProgramCache]: Analyzing trace with hash 154504536, now seen corresponding path program 64 times [2020-11-12 03:30:35,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:35,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204979144] [2020-11-12 03:30:35,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:36,243 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:36,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204979144] [2020-11-12 03:30:36,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631271391] [2020-11-12 03:30:36,243 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:36,336 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:30:36,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:36,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-12 03:30:36,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:36,375 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:36,385 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:36,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:36,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-11-12 03:30:36,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328490135] [2020-11-12 03:30:36,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-12 03:30:36,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:36,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-12 03:30:36,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-11-12 03:30:36,386 INFO L87 Difference]: Start difference. First operand 1687 states and 2804 transitions. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:36,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:36,894 INFO L93 Difference]: Finished difference Result 2834 states and 5034 transitions. [2020-11-12 03:30:36,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-12 03:30:36,894 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-11-12 03:30:36,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:36,898 INFO L225 Difference]: With dead ends: 2834 [2020-11-12 03:30:36,898 INFO L226 Difference]: Without dead ends: 2564 [2020-11-12 03:30:36,901 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=294, Invalid=896, Unknown=0, NotChecked=0, Total=1190 [2020-11-12 03:30:36,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2020-11-12 03:30:36,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 1737. [2020-11-12 03:30:36,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1737 states, 1673 states have (on average 1.7238493723849373) internal successors, (2884), 1736 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:36,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1737 states to 1737 states and 2884 transitions. [2020-11-12 03:30:36,927 INFO L78 Accepts]: Start accepts. Automaton has 1737 states and 2884 transitions. Word has length 86 [2020-11-12 03:30:36,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:36,927 INFO L481 AbstractCegarLoop]: Abstraction has 1737 states and 2884 transitions. [2020-11-12 03:30:36,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:36,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1737 states and 2884 transitions. [2020-11-12 03:30:36,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 03:30:36,929 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:36,929 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:37,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:37,143 INFO L429 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:37,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:37,143 INFO L82 PathProgramCache]: Analyzing trace with hash -323466088, now seen corresponding path program 65 times [2020-11-12 03:30:37,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:37,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678948048] [2020-11-12 03:30:37,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:37,399 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:37,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678948048] [2020-11-12 03:30:37,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574221112] [2020-11-12 03:30:37,400 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:37,475 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-12 03:30:37,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:37,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-12 03:30:37,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:37,501 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:37,544 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:37,562 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:37,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:37,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-11-12 03:30:37,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678580214] [2020-11-12 03:30:37,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:30:37,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:37,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:30:37,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:30:37,564 INFO L87 Difference]: Start difference. First operand 1737 states and 2884 transitions. Second operand has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:38,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:38,247 INFO L93 Difference]: Finished difference Result 2834 states and 5014 transitions. [2020-11-12 03:30:38,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-12 03:30:38,248 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-11-12 03:30:38,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:38,251 INFO L225 Difference]: With dead ends: 2834 [2020-11-12 03:30:38,251 INFO L226 Difference]: Without dead ends: 2564 [2020-11-12 03:30:38,252 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=355, Invalid=1127, Unknown=0, NotChecked=0, Total=1482 [2020-11-12 03:30:38,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2020-11-12 03:30:38,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 1762. [2020-11-12 03:30:38,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1762 states, 1698 states have (on average 1.7308598351001179) internal successors, (2939), 1761 states have internal predecessors, (2939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:38,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 2939 transitions. [2020-11-12 03:30:38,276 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 2939 transitions. Word has length 86 [2020-11-12 03:30:38,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:38,276 INFO L481 AbstractCegarLoop]: Abstraction has 1762 states and 2939 transitions. [2020-11-12 03:30:38,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:38,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 2939 transitions. [2020-11-12 03:30:38,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 03:30:38,278 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:38,278 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:38,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2020-11-12 03:30:38,479 INFO L429 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:38,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:38,479 INFO L82 PathProgramCache]: Analyzing trace with hash 823371446, now seen corresponding path program 66 times [2020-11-12 03:30:38,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:38,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002234278] [2020-11-12 03:30:38,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:38,745 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:38,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002234278] [2020-11-12 03:30:38,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035119247] [2020-11-12 03:30:38,746 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:38,830 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-11-12 03:30:38,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:38,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-12 03:30:38,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:38,875 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:38,885 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:38,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:38,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-11-12 03:30:38,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147123554] [2020-11-12 03:30:38,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-12 03:30:38,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:38,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-12 03:30:38,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2020-11-12 03:30:38,887 INFO L87 Difference]: Start difference. First operand 1762 states and 2939 transitions. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:39,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:39,488 INFO L93 Difference]: Finished difference Result 2809 states and 4969 transitions. [2020-11-12 03:30:39,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-12 03:30:39,489 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-11-12 03:30:39,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:39,492 INFO L225 Difference]: With dead ends: 2809 [2020-11-12 03:30:39,492 INFO L226 Difference]: Without dead ends: 2539 [2020-11-12 03:30:39,492 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=322, Invalid=1010, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 03:30:39,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2020-11-12 03:30:39,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 1787. [2020-11-12 03:30:39,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1787 states, 1723 states have (on average 1.7376668601276843) internal successors, (2994), 1786 states have internal predecessors, (2994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:39,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1787 states to 1787 states and 2994 transitions. [2020-11-12 03:30:39,511 INFO L78 Accepts]: Start accepts. Automaton has 1787 states and 2994 transitions. Word has length 86 [2020-11-12 03:30:39,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:39,511 INFO L481 AbstractCegarLoop]: Abstraction has 1787 states and 2994 transitions. [2020-11-12 03:30:39,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:39,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1787 states and 2994 transitions. [2020-11-12 03:30:39,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 03:30:39,512 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:39,512 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:39,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:39,713 INFO L429 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:39,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:39,714 INFO L82 PathProgramCache]: Analyzing trace with hash 2111862262, now seen corresponding path program 67 times [2020-11-12 03:30:39,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:39,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762466413] [2020-11-12 03:30:39,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:39,973 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:39,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762466413] [2020-11-12 03:30:39,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137389357] [2020-11-12 03:30:39,973 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:40,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-12 03:30:40,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:40,080 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:40,129 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:40,143 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:40,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:40,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-11-12 03:30:40,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984329030] [2020-11-12 03:30:40,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:30:40,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:40,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:30:40,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:30:40,145 INFO L87 Difference]: Start difference. First operand 1787 states and 2994 transitions. Second operand has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:40,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:40,927 INFO L93 Difference]: Finished difference Result 2784 states and 4924 transitions. [2020-11-12 03:30:40,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-12 03:30:40,927 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-11-12 03:30:40,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:40,930 INFO L225 Difference]: With dead ends: 2784 [2020-11-12 03:30:40,930 INFO L226 Difference]: Without dead ends: 2514 [2020-11-12 03:30:40,931 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=391, Invalid=1249, Unknown=0, NotChecked=0, Total=1640 [2020-11-12 03:30:40,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2020-11-12 03:30:40,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 1812. [2020-11-12 03:30:40,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1812 states, 1748 states have (on average 1.744279176201373) internal successors, (3049), 1811 states have internal predecessors, (3049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:40,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 3049 transitions. [2020-11-12 03:30:40,952 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 3049 transitions. Word has length 86 [2020-11-12 03:30:40,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:40,952 INFO L481 AbstractCegarLoop]: Abstraction has 1812 states and 3049 transitions. [2020-11-12 03:30:40,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:40,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 3049 transitions. [2020-11-12 03:30:40,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 03:30:40,954 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:40,954 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:41,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2020-11-12 03:30:41,155 INFO L429 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:41,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:41,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1130511764, now seen corresponding path program 68 times [2020-11-12 03:30:41,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:41,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055557643] [2020-11-12 03:30:41,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:41,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:41,386 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:41,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055557643] [2020-11-12 03:30:41,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871209542] [2020-11-12 03:30:41,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:41,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:30:41,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:41,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-12 03:30:41,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:41,512 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:41,523 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:41,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:41,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-11-12 03:30:41,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746320712] [2020-11-12 03:30:41,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-12 03:30:41,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:41,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-12 03:30:41,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-11-12 03:30:41,525 INFO L87 Difference]: Start difference. First operand 1812 states and 3049 transitions. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:42,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:42,213 INFO L93 Difference]: Finished difference Result 2759 states and 4879 transitions. [2020-11-12 03:30:42,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-12 03:30:42,214 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-11-12 03:30:42,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:42,217 INFO L225 Difference]: With dead ends: 2759 [2020-11-12 03:30:42,217 INFO L226 Difference]: Without dead ends: 2489 [2020-11-12 03:30:42,218 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=366, Invalid=1116, Unknown=0, NotChecked=0, Total=1482 [2020-11-12 03:30:42,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states. [2020-11-12 03:30:42,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 1837. [2020-11-12 03:30:42,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1837 states, 1773 states have (on average 1.7507050197405527) internal successors, (3104), 1836 states have internal predecessors, (3104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:42,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1837 states to 1837 states and 3104 transitions. [2020-11-12 03:30:42,238 INFO L78 Accepts]: Start accepts. Automaton has 1837 states and 3104 transitions. Word has length 86 [2020-11-12 03:30:42,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:42,238 INFO L481 AbstractCegarLoop]: Abstraction has 1837 states and 3104 transitions. [2020-11-12 03:30:42,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:42,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1837 states and 3104 transitions. [2020-11-12 03:30:42,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 03:30:42,239 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:42,239 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:42,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:42,440 INFO L429 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:42,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:42,441 INFO L82 PathProgramCache]: Analyzing trace with hash 466427092, now seen corresponding path program 69 times [2020-11-12 03:30:42,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:42,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715153653] [2020-11-12 03:30:42,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:42,684 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:42,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715153653] [2020-11-12 03:30:42,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572644872] [2020-11-12 03:30:42,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:42,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-11-12 03:30:42,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:42,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 03:30:42,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:42,835 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:42,845 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:42,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:42,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-11-12 03:30:42,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085340867] [2020-11-12 03:30:42,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:30:42,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:42,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:30:42,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:30:42,846 INFO L87 Difference]: Start difference. First operand 1837 states and 3104 transitions. Second operand has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:43,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:43,666 INFO L93 Difference]: Finished difference Result 2734 states and 4834 transitions. [2020-11-12 03:30:43,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-12 03:30:43,667 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-11-12 03:30:43,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:43,670 INFO L225 Difference]: With dead ends: 2734 [2020-11-12 03:30:43,670 INFO L226 Difference]: Without dead ends: 2464 [2020-11-12 03:30:43,670 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-11-12 03:30:43,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2020-11-12 03:30:43,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 1862. [2020-11-12 03:30:43,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1862 states, 1798 states have (on average 1.756952169076752) internal successors, (3159), 1861 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:43,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 3159 transitions. [2020-11-12 03:30:43,695 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 3159 transitions. Word has length 86 [2020-11-12 03:30:43,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:43,695 INFO L481 AbstractCegarLoop]: Abstraction has 1862 states and 3159 transitions. [2020-11-12 03:30:43,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:43,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 3159 transitions. [2020-11-12 03:30:43,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 03:30:43,697 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:43,698 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:43,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2020-11-12 03:30:43,913 INFO L429 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:43,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:43,913 INFO L82 PathProgramCache]: Analyzing trace with hash 764948978, now seen corresponding path program 70 times [2020-11-12 03:30:43,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:43,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819111056] [2020-11-12 03:30:43,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:44,150 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:44,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819111056] [2020-11-12 03:30:44,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921003853] [2020-11-12 03:30:44,151 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:44,234 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:30:44,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:44,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-12 03:30:44,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:44,284 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:44,295 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:44,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:44,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-11-12 03:30:44,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202993888] [2020-11-12 03:30:44,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-12 03:30:44,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:44,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-12 03:30:44,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-11-12 03:30:44,296 INFO L87 Difference]: Start difference. First operand 1862 states and 3159 transitions. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:45,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:45,037 INFO L93 Difference]: Finished difference Result 2709 states and 4789 transitions. [2020-11-12 03:30:45,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-12 03:30:45,038 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-11-12 03:30:45,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:45,040 INFO L225 Difference]: With dead ends: 2709 [2020-11-12 03:30:45,040 INFO L226 Difference]: Without dead ends: 2439 [2020-11-12 03:30:45,041 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=426, Invalid=1214, Unknown=0, NotChecked=0, Total=1640 [2020-11-12 03:30:45,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2020-11-12 03:30:45,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 1887. [2020-11-12 03:30:45,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1887 states, 1823 states have (on average 1.7630279758639604) internal successors, (3214), 1886 states have internal predecessors, (3214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:45,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 3214 transitions. [2020-11-12 03:30:45,062 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 3214 transitions. Word has length 86 [2020-11-12 03:30:45,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:45,062 INFO L481 AbstractCegarLoop]: Abstraction has 1887 states and 3214 transitions. [2020-11-12 03:30:45,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:45,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 3214 transitions. [2020-11-12 03:30:45,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 03:30:45,064 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:45,064 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:45,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:45,265 INFO L429 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:45,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:45,265 INFO L82 PathProgramCache]: Analyzing trace with hash -856350414, now seen corresponding path program 71 times [2020-11-12 03:30:45,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:45,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612308735] [2020-11-12 03:30:45,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:45,492 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:45,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612308735] [2020-11-12 03:30:45,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859226083] [2020-11-12 03:30:45,493 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:45,570 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-12 03:30:45,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:45,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-12 03:30:45,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:45,611 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:45,652 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:45,660 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:45,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:45,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-11-12 03:30:45,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065696182] [2020-11-12 03:30:45,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:30:45,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:45,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:30:45,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:30:45,661 INFO L87 Difference]: Start difference. First operand 1887 states and 3214 transitions. Second operand has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:46,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:46,724 INFO L93 Difference]: Finished difference Result 3113 states and 5550 transitions. [2020-11-12 03:30:46,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-12 03:30:46,725 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-11-12 03:30:46,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:46,728 INFO L225 Difference]: With dead ends: 3113 [2020-11-12 03:30:46,728 INFO L226 Difference]: Without dead ends: 2604 [2020-11-12 03:30:46,728 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=534, Invalid=1628, Unknown=0, NotChecked=0, Total=2162 [2020-11-12 03:30:46,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2020-11-12 03:30:46,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 1912. [2020-11-12 03:30:46,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1912 states, 1848 states have (on average 1.772186147186147) internal successors, (3275), 1911 states have internal predecessors, (3275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:46,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 3275 transitions. [2020-11-12 03:30:46,749 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 3275 transitions. Word has length 86 [2020-11-12 03:30:46,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:46,749 INFO L481 AbstractCegarLoop]: Abstraction has 1912 states and 3275 transitions. [2020-11-12 03:30:46,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:46,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 3275 transitions. [2020-11-12 03:30:46,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 03:30:46,751 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:46,751 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:46,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:46,953 INFO L429 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:46,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:46,954 INFO L82 PathProgramCache]: Analyzing trace with hash 277739750, now seen corresponding path program 72 times [2020-11-12 03:30:46,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:46,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191022843] [2020-11-12 03:30:46,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:47,171 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:47,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191022843] [2020-11-12 03:30:47,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678860535] [2020-11-12 03:30:47,172 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:47,254 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-11-12 03:30:47,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:47,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-12 03:30:47,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:47,301 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:47,316 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:47,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:47,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-11-12 03:30:47,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343221427] [2020-11-12 03:30:47,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-12 03:30:47,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:47,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-12 03:30:47,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-11-12 03:30:47,318 INFO L87 Difference]: Start difference. First operand 1912 states and 3275 transitions. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:48,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:48,083 INFO L93 Difference]: Finished difference Result 3791 states and 6259 transitions. [2020-11-12 03:30:48,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-12 03:30:48,084 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-11-12 03:30:48,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:48,087 INFO L225 Difference]: With dead ends: 3791 [2020-11-12 03:30:48,087 INFO L226 Difference]: Without dead ends: 3506 [2020-11-12 03:30:48,088 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=503, Invalid=1303, Unknown=0, NotChecked=0, Total=1806 [2020-11-12 03:30:48,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3506 states. [2020-11-12 03:30:48,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3506 to 1997. [2020-11-12 03:30:48,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1997 states, 1933 states have (on average 1.7966890843248835) internal successors, (3473), 1996 states have internal predecessors, (3473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:48,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1997 states to 1997 states and 3473 transitions. [2020-11-12 03:30:48,115 INFO L78 Accepts]: Start accepts. Automaton has 1997 states and 3473 transitions. Word has length 86 [2020-11-12 03:30:48,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:48,115 INFO L481 AbstractCegarLoop]: Abstraction has 1997 states and 3473 transitions. [2020-11-12 03:30:48,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:48,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1997 states and 3473 transitions. [2020-11-12 03:30:48,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 03:30:48,117 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:48,117 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:48,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:48,318 INFO L429 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:48,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:48,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1117716942, now seen corresponding path program 73 times [2020-11-12 03:30:48,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:48,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115674150] [2020-11-12 03:30:48,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:48,550 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:48,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115674150] [2020-11-12 03:30:48,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516706202] [2020-11-12 03:30:48,550 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:48,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-12 03:30:48,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:48,657 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:48,702 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:48,711 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:48,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:48,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-11-12 03:30:48,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776414325] [2020-11-12 03:30:48,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:30:48,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:48,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:30:48,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:30:48,713 INFO L87 Difference]: Start difference. First operand 1997 states and 3473 transitions. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:49,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:49,862 INFO L93 Difference]: Finished difference Result 3126 states and 5567 transitions. [2020-11-12 03:30:49,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 03:30:49,862 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-11-12 03:30:49,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:49,864 INFO L225 Difference]: With dead ends: 3126 [2020-11-12 03:30:49,865 INFO L226 Difference]: Without dead ends: 2554 [2020-11-12 03:30:49,865 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=633, Invalid=1817, Unknown=0, NotChecked=0, Total=2450 [2020-11-12 03:30:49,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2020-11-12 03:30:49,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 1662. [2020-11-12 03:30:49,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1598 states have (on average 1.7234042553191489) internal successors, (2754), 1661 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:49,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2754 transitions. [2020-11-12 03:30:49,884 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2754 transitions. Word has length 86 [2020-11-12 03:30:49,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:49,884 INFO L481 AbstractCegarLoop]: Abstraction has 1662 states and 2754 transitions. [2020-11-12 03:30:49,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:49,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2754 transitions. [2020-11-12 03:30:49,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-12 03:30:49,886 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:49,886 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:50,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:50,087 INFO L429 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:50,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:50,087 INFO L82 PathProgramCache]: Analyzing trace with hash -13876813, now seen corresponding path program 74 times [2020-11-12 03:30:50,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:50,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012144587] [2020-11-12 03:30:50,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:50,369 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:50,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012144587] [2020-11-12 03:30:50,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020653917] [2020-11-12 03:30:50,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:50,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:30:50,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:50,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-12 03:30:50,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:50,506 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:50,522 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:50,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:50,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-11-12 03:30:50,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668063929] [2020-11-12 03:30:50,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:30:50,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:50,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:30:50,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:30:50,524 INFO L87 Difference]: Start difference. First operand 1662 states and 2754 transitions. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:51,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:51,030 INFO L93 Difference]: Finished difference Result 2659 states and 4684 transitions. [2020-11-12 03:30:51,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-12 03:30:51,030 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-11-12 03:30:51,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:51,033 INFO L225 Difference]: With dead ends: 2659 [2020-11-12 03:30:51,033 INFO L226 Difference]: Without dead ends: 2389 [2020-11-12 03:30:51,034 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=334, Invalid=998, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 03:30:51,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2020-11-12 03:30:51,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1702. [2020-11-12 03:30:51,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1638 states have (on average 1.7240537240537241) internal successors, (2824), 1701 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:51,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 2824 transitions. [2020-11-12 03:30:51,077 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 2824 transitions. Word has length 91 [2020-11-12 03:30:51,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:51,077 INFO L481 AbstractCegarLoop]: Abstraction has 1702 states and 2824 transitions. [2020-11-12 03:30:51,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:51,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 2824 transitions. [2020-11-12 03:30:51,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-12 03:30:51,080 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:51,080 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:51,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:51,281 INFO L429 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:51,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:51,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1028067085, now seen corresponding path program 75 times [2020-11-12 03:30:51,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:51,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331122801] [2020-11-12 03:30:51,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:51,595 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:51,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331122801] [2020-11-12 03:30:51,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387776165] [2020-11-12 03:30:51,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:51,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-11-12 03:30:51,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:51,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-12 03:30:51,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:51,705 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:51,744 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:51,759 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:51,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:51,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2020-11-12 03:30:51,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483421117] [2020-11-12 03:30:51,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 03:30:51,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:51,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 03:30:51,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2020-11-12 03:30:51,762 INFO L87 Difference]: Start difference. First operand 1702 states and 2824 transitions. Second operand has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:52,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:52,413 INFO L93 Difference]: Finished difference Result 2944 states and 5234 transitions. [2020-11-12 03:30:52,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-12 03:30:52,413 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-11-12 03:30:52,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:52,416 INFO L225 Difference]: With dead ends: 2944 [2020-11-12 03:30:52,416 INFO L226 Difference]: Without dead ends: 2674 [2020-11-12 03:30:52,417 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=380, Invalid=1180, Unknown=0, NotChecked=0, Total=1560 [2020-11-12 03:30:52,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2020-11-12 03:30:52,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 1727. [2020-11-12 03:30:52,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1727 states, 1663 states have (on average 1.7312086590499098) internal successors, (2879), 1726 states have internal predecessors, (2879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:52,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2879 transitions. [2020-11-12 03:30:52,438 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2879 transitions. Word has length 91 [2020-11-12 03:30:52,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:52,438 INFO L481 AbstractCegarLoop]: Abstraction has 1727 states and 2879 transitions. [2020-11-12 03:30:52,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:52,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2879 transitions. [2020-11-12 03:30:52,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-12 03:30:52,440 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:52,440 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:52,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:52,642 INFO L429 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:52,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:52,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1794686353, now seen corresponding path program 76 times [2020-11-12 03:30:52,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:52,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881582468] [2020-11-12 03:30:52,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:52,916 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:52,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881582468] [2020-11-12 03:30:52,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328628857] [2020-11-12 03:30:52,916 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:52,997 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:30:52,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:52,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 03:30:53,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:53,048 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:53,063 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:53,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:53,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-11-12 03:30:53,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691736295] [2020-11-12 03:30:53,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:30:53,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:53,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:30:53,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:30:53,065 INFO L87 Difference]: Start difference. First operand 1727 states and 2879 transitions. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:53,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:53,680 INFO L93 Difference]: Finished difference Result 2959 states and 5244 transitions. [2020-11-12 03:30:53,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-12 03:30:53,681 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-11-12 03:30:53,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:53,684 INFO L225 Difference]: With dead ends: 2959 [2020-11-12 03:30:53,684 INFO L226 Difference]: Without dead ends: 2689 [2020-11-12 03:30:53,685 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=384, Invalid=1176, Unknown=0, NotChecked=0, Total=1560 [2020-11-12 03:30:53,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2020-11-12 03:30:53,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 1752. [2020-11-12 03:30:53,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1752 states, 1688 states have (on average 1.7381516587677726) internal successors, (2934), 1751 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:53,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1752 states to 1752 states and 2934 transitions. [2020-11-12 03:30:53,705 INFO L78 Accepts]: Start accepts. Automaton has 1752 states and 2934 transitions. Word has length 91 [2020-11-12 03:30:53,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:53,705 INFO L481 AbstractCegarLoop]: Abstraction has 1752 states and 2934 transitions. [2020-11-12 03:30:53,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:53,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1752 states and 2934 transitions. [2020-11-12 03:30:53,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-12 03:30:53,707 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:53,707 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:53,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:53,908 INFO L429 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:53,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:53,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1316715729, now seen corresponding path program 77 times [2020-11-12 03:30:53,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:53,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890552086] [2020-11-12 03:30:53,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:54,194 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:54,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890552086] [2020-11-12 03:30:54,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107413138] [2020-11-12 03:30:54,195 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:54,274 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-11-12 03:30:54,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:54,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-12 03:30:54,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:54,302 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:54,342 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:54,354 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:54,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:54,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2020-11-12 03:30:54,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615076502] [2020-11-12 03:30:54,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 03:30:54,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:54,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 03:30:54,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2020-11-12 03:30:54,355 INFO L87 Difference]: Start difference. First operand 1752 states and 2934 transitions. Second operand has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:55,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:55,149 INFO L93 Difference]: Finished difference Result 2959 states and 5224 transitions. [2020-11-12 03:30:55,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-12 03:30:55,150 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-11-12 03:30:55,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:55,153 INFO L225 Difference]: With dead ends: 2959 [2020-11-12 03:30:55,154 INFO L226 Difference]: Without dead ends: 2689 [2020-11-12 03:30:55,154 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=407, Invalid=1315, Unknown=0, NotChecked=0, Total=1722 [2020-11-12 03:30:55,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2020-11-12 03:30:55,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 1777. [2020-11-12 03:30:55,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1713 states have (on average 1.7448920023350847) internal successors, (2989), 1776 states have internal predecessors, (2989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:55,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 2989 transitions. [2020-11-12 03:30:55,175 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 2989 transitions. Word has length 91 [2020-11-12 03:30:55,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:55,175 INFO L481 AbstractCegarLoop]: Abstraction has 1777 states and 2989 transitions. [2020-11-12 03:30:55,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:55,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 2989 transitions. [2020-11-12 03:30:55,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-12 03:30:55,177 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:55,177 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:55,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2020-11-12 03:30:55,378 INFO L429 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:55,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:55,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1831414033, now seen corresponding path program 78 times [2020-11-12 03:30:55,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:55,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636026096] [2020-11-12 03:30:55,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:55,639 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:55,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636026096] [2020-11-12 03:30:55,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255931661] [2020-11-12 03:30:55,640 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:55,723 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-11-12 03:30:55,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:55,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-12 03:30:55,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:55,773 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:55,784 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:55,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:55,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-11-12 03:30:55,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036167634] [2020-11-12 03:30:55,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:30:55,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:55,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:30:55,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:30:55,786 INFO L87 Difference]: Start difference. First operand 1777 states and 2989 transitions. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:56,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:56,490 INFO L93 Difference]: Finished difference Result 2959 states and 5204 transitions. [2020-11-12 03:30:56,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-12 03:30:56,491 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-11-12 03:30:56,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:56,494 INFO L225 Difference]: With dead ends: 2959 [2020-11-12 03:30:56,495 INFO L226 Difference]: Without dead ends: 2689 [2020-11-12 03:30:56,495 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=425, Invalid=1297, Unknown=0, NotChecked=0, Total=1722 [2020-11-12 03:30:56,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2020-11-12 03:30:56,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 1802. [2020-11-12 03:30:56,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1802 states, 1738 states have (on average 1.7514384349827388) internal successors, (3044), 1801 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:56,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 3044 transitions. [2020-11-12 03:30:56,516 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 3044 transitions. Word has length 91 [2020-11-12 03:30:56,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:56,516 INFO L481 AbstractCegarLoop]: Abstraction has 1802 states and 3044 transitions. [2020-11-12 03:30:56,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:56,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 3044 transitions. [2020-11-12 03:30:56,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-12 03:30:56,517 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:56,517 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:56,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:56,718 INFO L429 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:56,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:56,719 INFO L82 PathProgramCache]: Analyzing trace with hash -542923217, now seen corresponding path program 79 times [2020-11-12 03:30:56,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:56,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153608241] [2020-11-12 03:30:56,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:56,986 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:56,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153608241] [2020-11-12 03:30:56,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512008642] [2020-11-12 03:30:56,987 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:57,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-12 03:30:57,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:57,094 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:57,135 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:57,148 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:57,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:57,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2020-11-12 03:30:57,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516790188] [2020-11-12 03:30:57,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 03:30:57,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:57,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 03:30:57,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2020-11-12 03:30:57,150 INFO L87 Difference]: Start difference. First operand 1802 states and 3044 transitions. Second operand has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:58,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:58,012 INFO L93 Difference]: Finished difference Result 2959 states and 5184 transitions. [2020-11-12 03:30:58,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-12 03:30:58,013 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-11-12 03:30:58,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:58,016 INFO L225 Difference]: With dead ends: 2959 [2020-11-12 03:30:58,016 INFO L226 Difference]: Without dead ends: 2689 [2020-11-12 03:30:58,016 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=450, Invalid=1442, Unknown=0, NotChecked=0, Total=1892 [2020-11-12 03:30:58,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2020-11-12 03:30:58,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 1827. [2020-11-12 03:30:58,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1827 states, 1763 states have (on average 1.7577992058990357) internal successors, (3099), 1826 states have internal predecessors, (3099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:58,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 3099 transitions. [2020-11-12 03:30:58,037 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 3099 transitions. Word has length 91 [2020-11-12 03:30:58,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:58,037 INFO L481 AbstractCegarLoop]: Abstraction has 1827 states and 3099 transitions. [2020-11-12 03:30:58,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:58,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 3099 transitions. [2020-11-12 03:30:58,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-12 03:30:58,039 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:58,039 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:58,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2020-11-12 03:30:58,240 INFO L429 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:58,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:58,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1524273715, now seen corresponding path program 80 times [2020-11-12 03:30:58,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:58,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134974133] [2020-11-12 03:30:58,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:58,480 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:58,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134974133] [2020-11-12 03:30:58,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392150031] [2020-11-12 03:30:58,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:58,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:30:58,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:58,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-12 03:30:58,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:58,607 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:58,617 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:58,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:58,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-11-12 03:30:58,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196206647] [2020-11-12 03:30:58,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:30:58,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:58,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:30:58,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:30:58,619 INFO L87 Difference]: Start difference. First operand 1827 states and 3099 transitions. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:59,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:59,382 INFO L93 Difference]: Finished difference Result 2959 states and 5164 transitions. [2020-11-12 03:30:59,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-12 03:30:59,383 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-11-12 03:30:59,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:59,387 INFO L225 Difference]: With dead ends: 2959 [2020-11-12 03:30:59,387 INFO L226 Difference]: Without dead ends: 2689 [2020-11-12 03:30:59,387 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=482, Invalid=1410, Unknown=0, NotChecked=0, Total=1892 [2020-11-12 03:30:59,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2020-11-12 03:30:59,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 1852. [2020-11-12 03:30:59,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1788 states have (on average 1.7639821029082774) internal successors, (3154), 1851 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:59,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 3154 transitions. [2020-11-12 03:30:59,409 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 3154 transitions. Word has length 91 [2020-11-12 03:30:59,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:59,410 INFO L481 AbstractCegarLoop]: Abstraction has 1852 states and 3154 transitions. [2020-11-12 03:30:59,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:59,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 3154 transitions. [2020-11-12 03:30:59,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-12 03:30:59,411 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:59,411 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:59,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:59,612 INFO L429 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:59,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:59,613 INFO L82 PathProgramCache]: Analyzing trace with hash 2106608909, now seen corresponding path program 81 times [2020-11-12 03:30:59,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:59,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435938853] [2020-11-12 03:30:59,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:59,872 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:59,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435938853] [2020-11-12 03:30:59,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655157339] [2020-11-12 03:30:59,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:59,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-11-12 03:30:59,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:59,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:30:59,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:00,032 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:00,041 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:00,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:00,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2020-11-12 03:31:00,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046822840] [2020-11-12 03:31:00,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 03:31:00,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:00,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 03:31:00,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2020-11-12 03:31:00,043 INFO L87 Difference]: Start difference. First operand 1852 states and 3154 transitions. Second operand has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:01,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:01,014 INFO L93 Difference]: Finished difference Result 2959 states and 5144 transitions. [2020-11-12 03:31:01,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-12 03:31:01,014 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-11-12 03:31:01,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:01,017 INFO L225 Difference]: With dead ends: 2959 [2020-11-12 03:31:01,017 INFO L226 Difference]: Without dead ends: 2689 [2020-11-12 03:31:01,018 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=488, Invalid=1582, Unknown=0, NotChecked=0, Total=2070 [2020-11-12 03:31:01,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2020-11-12 03:31:01,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 1877. [2020-11-12 03:31:01,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1877 states, 1813 states have (on average 1.7699944842801987) internal successors, (3209), 1876 states have internal predecessors, (3209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:01,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 3209 transitions. [2020-11-12 03:31:01,039 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 3209 transitions. Word has length 91 [2020-11-12 03:31:01,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:01,039 INFO L481 AbstractCegarLoop]: Abstraction has 1877 states and 3209 transitions. [2020-11-12 03:31:01,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:01,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 3209 transitions. [2020-11-12 03:31:01,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-12 03:31:01,040 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:01,041 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:01,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,87 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:01,243 INFO L429 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:01,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:01,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1889836501, now seen corresponding path program 82 times [2020-11-12 03:31:01,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:01,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63192527] [2020-11-12 03:31:01,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:01,483 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:01,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63192527] [2020-11-12 03:31:01,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141885118] [2020-11-12 03:31:01,484 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:01,560 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:31:01,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:01,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 03:31:01,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:01,607 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:01,617 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:01,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:01,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-11-12 03:31:01,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836713058] [2020-11-12 03:31:01,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:31:01,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:01,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:31:01,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:31:01,618 INFO L87 Difference]: Start difference. First operand 1877 states and 3209 transitions. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:02,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:02,428 INFO L93 Difference]: Finished difference Result 2959 states and 5124 transitions. [2020-11-12 03:31:02,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-12 03:31:02,429 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-11-12 03:31:02,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:02,433 INFO L225 Difference]: With dead ends: 2959 [2020-11-12 03:31:02,433 INFO L226 Difference]: Without dead ends: 2689 [2020-11-12 03:31:02,433 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=555, Invalid=1515, Unknown=0, NotChecked=0, Total=2070 [2020-11-12 03:31:02,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2020-11-12 03:31:02,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 1902. [2020-11-12 03:31:02,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1902 states, 1838 states have (on average 1.7758433079434168) internal successors, (3264), 1901 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:02,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 3264 transitions. [2020-11-12 03:31:02,453 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 3264 transitions. Word has length 91 [2020-11-12 03:31:02,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:02,453 INFO L481 AbstractCegarLoop]: Abstraction has 1902 states and 3264 transitions. [2020-11-12 03:31:02,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:02,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 3264 transitions. [2020-11-12 03:31:02,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-12 03:31:02,455 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:02,455 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:02,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:02,656 INFO L429 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:02,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:02,656 INFO L82 PathProgramCache]: Analyzing trace with hash 783831403, now seen corresponding path program 83 times [2020-11-12 03:31:02,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:02,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41702141] [2020-11-12 03:31:02,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:02,934 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:02,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41702141] [2020-11-12 03:31:02,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279827054] [2020-11-12 03:31:02,935 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:03,031 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-11-12 03:31:03,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:03,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-12 03:31:03,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:03,065 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:31:03,106 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:03,118 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:03,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:03,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2020-11-12 03:31:03,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177019320] [2020-11-12 03:31:03,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 03:31:03,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:03,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 03:31:03,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2020-11-12 03:31:03,120 INFO L87 Difference]: Start difference. First operand 1902 states and 3264 transitions. Second operand has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:04,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:04,244 INFO L93 Difference]: Finished difference Result 3388 states and 5910 transitions. [2020-11-12 03:31:04,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-12 03:31:04,245 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-11-12 03:31:04,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:04,248 INFO L225 Difference]: With dead ends: 3388 [2020-11-12 03:31:04,249 INFO L226 Difference]: Without dead ends: 2879 [2020-11-12 03:31:04,249 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=607, Invalid=1843, Unknown=0, NotChecked=0, Total=2450 [2020-11-12 03:31:04,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2020-11-12 03:31:04,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 1927. [2020-11-12 03:31:04,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1927 states, 1863 states have (on average 1.7847557702630166) internal successors, (3325), 1926 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:04,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1927 states to 1927 states and 3325 transitions. [2020-11-12 03:31:04,275 INFO L78 Accepts]: Start accepts. Automaton has 1927 states and 3325 transitions. Word has length 91 [2020-11-12 03:31:04,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:04,276 INFO L481 AbstractCegarLoop]: Abstraction has 1927 states and 3325 transitions. [2020-11-12 03:31:04,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:04,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1927 states and 3325 transitions. [2020-11-12 03:31:04,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-12 03:31:04,277 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:04,278 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:04,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:04,478 INFO L429 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:04,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:04,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1917921567, now seen corresponding path program 84 times [2020-11-12 03:31:04,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:04,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527863151] [2020-11-12 03:31:04,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:04,709 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:04,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527863151] [2020-11-12 03:31:04,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115621137] [2020-11-12 03:31:04,709 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:04,789 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-11-12 03:31:04,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:04,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-12 03:31:04,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:04,848 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:04,860 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:04,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:04,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-11-12 03:31:04,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405899266] [2020-11-12 03:31:04,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:31:04,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:04,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:31:04,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:31:04,862 INFO L87 Difference]: Start difference. First operand 1927 states and 3325 transitions. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:05,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:05,768 INFO L93 Difference]: Finished difference Result 4066 states and 6594 transitions. [2020-11-12 03:31:05,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 03:31:05,769 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-11-12 03:31:05,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:05,774 INFO L225 Difference]: With dead ends: 4066 [2020-11-12 03:31:05,774 INFO L226 Difference]: Without dead ends: 3781 [2020-11-12 03:31:05,775 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=645, Invalid=1611, Unknown=0, NotChecked=0, Total=2256 [2020-11-12 03:31:05,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3781 states. [2020-11-12 03:31:05,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3781 to 2012. [2020-11-12 03:31:05,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2012 states, 1948 states have (on average 1.8085215605749487) internal successors, (3523), 2011 states have internal predecessors, (3523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:05,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2012 states to 2012 states and 3523 transitions. [2020-11-12 03:31:05,802 INFO L78 Accepts]: Start accepts. Automaton has 2012 states and 3523 transitions. Word has length 91 [2020-11-12 03:31:05,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:05,802 INFO L481 AbstractCegarLoop]: Abstraction has 2012 states and 3523 transitions. [2020-11-12 03:31:05,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:05,802 INFO L276 IsEmpty]: Start isEmpty. Operand 2012 states and 3523 transitions. [2020-11-12 03:31:05,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-12 03:31:05,803 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:05,804 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:06,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:06,004 INFO L429 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:06,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:06,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1537068537, now seen corresponding path program 85 times [2020-11-12 03:31:06,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:06,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912074678] [2020-11-12 03:31:06,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:06,260 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:06,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912074678] [2020-11-12 03:31:06,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33533422] [2020-11-12 03:31:06,261 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:06,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-12 03:31:06,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:06,372 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:31:06,389 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:06,400 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:06,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:06,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-11-12 03:31:06,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521371429] [2020-11-12 03:31:06,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:31:06,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:06,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:31:06,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:31:06,402 INFO L87 Difference]: Start difference. First operand 2012 states and 3523 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:07,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:07,480 INFO L93 Difference]: Finished difference Result 3065 states and 5189 transitions. [2020-11-12 03:31:07,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 03:31:07,480 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-11-12 03:31:07,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:07,483 INFO L225 Difference]: With dead ends: 3065 [2020-11-12 03:31:07,484 INFO L226 Difference]: Without dead ends: 2669 [2020-11-12 03:31:07,484 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=658, Invalid=1694, Unknown=0, NotChecked=0, Total=2352 [2020-11-12 03:31:07,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2669 states. [2020-11-12 03:31:07,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2669 to 1907. [2020-11-12 03:31:07,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1907 states, 1843 states have (on average 1.7986977753662508) internal successors, (3315), 1906 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:07,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 3315 transitions. [2020-11-12 03:31:07,504 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 3315 transitions. Word has length 91 [2020-11-12 03:31:07,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:07,504 INFO L481 AbstractCegarLoop]: Abstraction has 1907 states and 3315 transitions. [2020-11-12 03:31:07,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:07,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 3315 transitions. [2020-11-12 03:31:07,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 03:31:07,506 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:07,506 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:07,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:07,707 INFO L429 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:07,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:07,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1978788913, now seen corresponding path program 86 times [2020-11-12 03:31:07,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:07,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890730606] [2020-11-12 03:31:07,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:08,041 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:08,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890730606] [2020-11-12 03:31:08,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431432102] [2020-11-12 03:31:08,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:08,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:31:08,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:08,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 03:31:08,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:08,168 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:08,178 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:08,201 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:08,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:08,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-11-12 03:31:08,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447483626] [2020-11-12 03:31:08,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:31:08,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:08,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:31:08,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:31:08,202 INFO L87 Difference]: Start difference. First operand 1907 states and 3315 transitions. Second operand has 22 states, 22 states have (on average 5.318181818181818) internal successors, (117), 22 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:08,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:08,875 INFO L93 Difference]: Finished difference Result 3015 states and 5259 transitions. [2020-11-12 03:31:08,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-12 03:31:08,876 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.318181818181818) internal successors, (117), 22 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 03:31:08,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:08,879 INFO L225 Difference]: With dead ends: 3015 [2020-11-12 03:31:08,879 INFO L226 Difference]: Without dead ends: 2681 [2020-11-12 03:31:08,879 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=445, Invalid=1277, Unknown=0, NotChecked=0, Total=1722 [2020-11-12 03:31:08,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2020-11-12 03:31:08,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 1982. [2020-11-12 03:31:08,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1982 states, 1918 states have (on average 1.8065693430656935) internal successors, (3465), 1981 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:08,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1982 states to 1982 states and 3465 transitions. [2020-11-12 03:31:08,901 INFO L78 Accepts]: Start accepts. Automaton has 1982 states and 3465 transitions. Word has length 96 [2020-11-12 03:31:08,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:08,901 INFO L481 AbstractCegarLoop]: Abstraction has 1982 states and 3465 transitions. [2020-11-12 03:31:08,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.318181818181818) internal successors, (117), 22 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:08,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1982 states and 3465 transitions. [2020-11-12 03:31:08,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 03:31:08,904 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:08,904 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:09,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2020-11-12 03:31:09,119 INFO L429 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:09,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:09,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1361310479, now seen corresponding path program 87 times [2020-11-12 03:31:09,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:09,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463782966] [2020-11-12 03:31:09,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:09,418 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:09,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463782966] [2020-11-12 03:31:09,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505632267] [2020-11-12 03:31:09,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:09,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-11-12 03:31:09,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:09,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-12 03:31:09,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:09,518 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:09,538 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:09,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:09,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-11-12 03:31:09,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466080731] [2020-11-12 03:31:09,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:31:09,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:09,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:31:09,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:31:09,540 INFO L87 Difference]: Start difference. First operand 1982 states and 3465 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:10,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:10,058 INFO L93 Difference]: Finished difference Result 3409 states and 6240 transitions. [2020-11-12 03:31:10,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-12 03:31:10,059 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 03:31:10,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:10,063 INFO L225 Difference]: With dead ends: 3409 [2020-11-12 03:31:10,063 INFO L226 Difference]: Without dead ends: 3139 [2020-11-12 03:31:10,063 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=334, Invalid=926, Unknown=0, NotChecked=0, Total=1260 [2020-11-12 03:31:10,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2020-11-12 03:31:10,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 2042. [2020-11-12 03:31:10,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2042 states, 1978 states have (on average 1.79474216380182) internal successors, (3550), 2041 states have internal predecessors, (3550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:10,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2042 states to 2042 states and 3550 transitions. [2020-11-12 03:31:10,087 INFO L78 Accepts]: Start accepts. Automaton has 2042 states and 3550 transitions. Word has length 96 [2020-11-12 03:31:10,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:10,087 INFO L481 AbstractCegarLoop]: Abstraction has 2042 states and 3550 transitions. [2020-11-12 03:31:10,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:10,087 INFO L276 IsEmpty]: Start isEmpty. Operand 2042 states and 3550 transitions. [2020-11-12 03:31:10,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 03:31:10,088 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:10,089 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:10,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:10,290 INFO L429 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:10,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:10,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1796987505, now seen corresponding path program 88 times [2020-11-12 03:31:10,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:10,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794885327] [2020-11-12 03:31:10,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:10,630 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:10,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794885327] [2020-11-12 03:31:10,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420115276] [2020-11-12 03:31:10,631 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:10,713 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:31:10,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:10,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 03:31:10,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:10,741 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:31:10,758 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:10,785 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:10,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:10,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-11-12 03:31:10,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339131495] [2020-11-12 03:31:10,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 03:31:10,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:10,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 03:31:10,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2020-11-12 03:31:10,787 INFO L87 Difference]: Start difference. First operand 2042 states and 3550 transitions. Second operand has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:11,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:11,452 INFO L93 Difference]: Finished difference Result 3339 states and 6075 transitions. [2020-11-12 03:31:11,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-12 03:31:11,453 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 03:31:11,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:11,457 INFO L225 Difference]: With dead ends: 3339 [2020-11-12 03:31:11,457 INFO L226 Difference]: Without dead ends: 3069 [2020-11-12 03:31:11,458 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=389, Invalid=1171, Unknown=0, NotChecked=0, Total=1560 [2020-11-12 03:31:11,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3069 states. [2020-11-12 03:31:11,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3069 to 2067. [2020-11-12 03:31:11,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2067 states, 2003 states have (on average 1.7848227658512232) internal successors, (3575), 2066 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:11,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2067 states to 2067 states and 3575 transitions. [2020-11-12 03:31:11,481 INFO L78 Accepts]: Start accepts. Automaton has 2067 states and 3575 transitions. Word has length 96 [2020-11-12 03:31:11,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:11,482 INFO L481 AbstractCegarLoop]: Abstraction has 2067 states and 3575 transitions. [2020-11-12 03:31:11,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:11,482 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states and 3575 transitions. [2020-11-12 03:31:11,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 03:31:11,483 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:11,484 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:11,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-11-12 03:31:11,691 INFO L429 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:11,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:11,691 INFO L82 PathProgramCache]: Analyzing trace with hash 2119235593, now seen corresponding path program 89 times [2020-11-12 03:31:11,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:11,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789575253] [2020-11-12 03:31:11,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:11,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:11,999 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:11,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789575253] [2020-11-12 03:31:12,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963081866] [2020-11-12 03:31:12,000 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:12,078 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-11-12 03:31:12,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:12,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-12 03:31:12,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:12,098 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:12,114 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:12,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:12,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-11-12 03:31:12,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169109196] [2020-11-12 03:31:12,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:31:12,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:12,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:31:12,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:31:12,116 INFO L87 Difference]: Start difference. First operand 2067 states and 3575 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:12,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:12,754 INFO L93 Difference]: Finished difference Result 3339 states and 6050 transitions. [2020-11-12 03:31:12,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-12 03:31:12,754 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 03:31:12,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:12,759 INFO L225 Difference]: With dead ends: 3339 [2020-11-12 03:31:12,760 INFO L226 Difference]: Without dead ends: 3069 [2020-11-12 03:31:12,760 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=345, Invalid=1061, Unknown=0, NotChecked=0, Total=1406 [2020-11-12 03:31:12,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3069 states. [2020-11-12 03:31:12,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3069 to 2092. [2020-11-12 03:31:12,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 2028 states have (on average 1.7751479289940828) internal successors, (3600), 2091 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:12,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 3600 transitions. [2020-11-12 03:31:12,787 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 3600 transitions. Word has length 96 [2020-11-12 03:31:12,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:12,787 INFO L481 AbstractCegarLoop]: Abstraction has 2092 states and 3600 transitions. [2020-11-12 03:31:12,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:12,787 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 3600 transitions. [2020-11-12 03:31:12,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 03:31:12,789 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:12,789 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:12,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:12,990 INFO L429 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:12,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:12,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1105045321, now seen corresponding path program 90 times [2020-11-12 03:31:12,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:12,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473044508] [2020-11-12 03:31:12,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:13,324 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:13,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473044508] [2020-11-12 03:31:13,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705745122] [2020-11-12 03:31:13,325 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:13,410 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-11-12 03:31:13,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:13,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-12 03:31:13,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:13,438 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:31:13,459 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:13,475 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:13,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:13,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-11-12 03:31:13,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611532961] [2020-11-12 03:31:13,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 03:31:13,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:13,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 03:31:13,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2020-11-12 03:31:13,477 INFO L87 Difference]: Start difference. First operand 2092 states and 3600 transitions. Second operand has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:14,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:14,269 INFO L93 Difference]: Finished difference Result 3314 states and 5975 transitions. [2020-11-12 03:31:14,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-12 03:31:14,269 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 03:31:14,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:14,273 INFO L225 Difference]: With dead ends: 3314 [2020-11-12 03:31:14,273 INFO L226 Difference]: Without dead ends: 3044 [2020-11-12 03:31:14,273 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=408, Invalid=1314, Unknown=0, NotChecked=0, Total=1722 [2020-11-12 03:31:14,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3044 states. [2020-11-12 03:31:14,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3044 to 2092. [2020-11-12 03:31:14,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 2028 states have (on average 1.7751479289940828) internal successors, (3600), 2091 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:14,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 3600 transitions. [2020-11-12 03:31:14,300 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 3600 transitions. Word has length 96 [2020-11-12 03:31:14,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:14,300 INFO L481 AbstractCegarLoop]: Abstraction has 2092 states and 3600 transitions. [2020-11-12 03:31:14,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:14,300 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 3600 transitions. [2020-11-12 03:31:14,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 03:31:14,302 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:14,302 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:14,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-11-12 03:31:14,516 INFO L429 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:14,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:14,516 INFO L82 PathProgramCache]: Analyzing trace with hash -367168537, now seen corresponding path program 91 times [2020-11-12 03:31:14,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:14,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922636968] [2020-11-12 03:31:14,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:14,813 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:14,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922636968] [2020-11-12 03:31:14,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095300275] [2020-11-12 03:31:14,814 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:14,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-12 03:31:14,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:14,912 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:14,924 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:14,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:14,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-11-12 03:31:14,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676489489] [2020-11-12 03:31:14,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:31:14,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:14,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:31:14,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:31:14,926 INFO L87 Difference]: Start difference. First operand 2092 states and 3600 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:15,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:15,622 INFO L93 Difference]: Finished difference Result 3264 states and 5875 transitions. [2020-11-12 03:31:15,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-12 03:31:15,622 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 03:31:15,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:15,625 INFO L225 Difference]: With dead ends: 3264 [2020-11-12 03:31:15,625 INFO L226 Difference]: Without dead ends: 2994 [2020-11-12 03:31:15,626 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=372, Invalid=1188, Unknown=0, NotChecked=0, Total=1560 [2020-11-12 03:31:15,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2020-11-12 03:31:15,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 2092. [2020-11-12 03:31:15,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 2028 states have (on average 1.7751479289940828) internal successors, (3600), 2091 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:15,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 3600 transitions. [2020-11-12 03:31:15,649 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 3600 transitions. Word has length 96 [2020-11-12 03:31:15,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:15,649 INFO L481 AbstractCegarLoop]: Abstraction has 2092 states and 3600 transitions. [2020-11-12 03:31:15,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:15,650 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 3600 transitions. [2020-11-12 03:31:15,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 03:31:15,651 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:15,651 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:15,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-11-12 03:31:15,854 INFO L429 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:15,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:15,854 INFO L82 PathProgramCache]: Analyzing trace with hash -845139161, now seen corresponding path program 92 times [2020-11-12 03:31:15,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:15,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445051786] [2020-11-12 03:31:15,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:15,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:16,161 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:16,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445051786] [2020-11-12 03:31:16,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641683188] [2020-11-12 03:31:16,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:16,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:31:16,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:16,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-12 03:31:16,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:16,267 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:31:16,285 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:16,296 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:16,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:16,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-11-12 03:31:16,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515927740] [2020-11-12 03:31:16,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 03:31:16,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:16,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 03:31:16,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2020-11-12 03:31:16,298 INFO L87 Difference]: Start difference. First operand 2092 states and 3600 transitions. Second operand has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:17,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:17,185 INFO L93 Difference]: Finished difference Result 3214 states and 5775 transitions. [2020-11-12 03:31:17,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-12 03:31:17,186 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 03:31:17,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:17,190 INFO L225 Difference]: With dead ends: 3214 [2020-11-12 03:31:17,190 INFO L226 Difference]: Without dead ends: 2944 [2020-11-12 03:31:17,190 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=443, Invalid=1449, Unknown=0, NotChecked=0, Total=1892 [2020-11-12 03:31:17,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-11-12 03:31:17,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 2092. [2020-11-12 03:31:17,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 2028 states have (on average 1.7751479289940828) internal successors, (3600), 2091 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:17,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 3600 transitions. [2020-11-12 03:31:17,216 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 3600 transitions. Word has length 96 [2020-11-12 03:31:17,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:17,216 INFO L481 AbstractCegarLoop]: Abstraction has 2092 states and 3600 transitions. [2020-11-12 03:31:17,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:17,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 3600 transitions. [2020-11-12 03:31:17,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 03:31:17,218 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:17,218 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:17,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-11-12 03:31:17,419 INFO L429 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:17,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:17,419 INFO L82 PathProgramCache]: Analyzing trace with hash 301698373, now seen corresponding path program 93 times [2020-11-12 03:31:17,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:17,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243149762] [2020-11-12 03:31:17,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:17,701 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:17,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243149762] [2020-11-12 03:31:17,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257072931] [2020-11-12 03:31:17,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:17,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-11-12 03:31:17,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:17,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:31:17,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:17,804 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:17,814 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:17,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:17,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-11-12 03:31:17,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800166442] [2020-11-12 03:31:17,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:31:17,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:17,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:31:17,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:31:17,816 INFO L87 Difference]: Start difference. First operand 2092 states and 3600 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:18,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:18,575 INFO L93 Difference]: Finished difference Result 3164 states and 5675 transitions. [2020-11-12 03:31:18,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-12 03:31:18,576 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 03:31:18,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:18,579 INFO L225 Difference]: With dead ends: 3164 [2020-11-12 03:31:18,579 INFO L226 Difference]: Without dead ends: 2894 [2020-11-12 03:31:18,580 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=415, Invalid=1307, Unknown=0, NotChecked=0, Total=1722 [2020-11-12 03:31:18,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2020-11-12 03:31:18,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 2092. [2020-11-12 03:31:18,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 2028 states have (on average 1.7751479289940828) internal successors, (3600), 2091 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:18,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 3600 transitions. [2020-11-12 03:31:18,603 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 3600 transitions. Word has length 96 [2020-11-12 03:31:18,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:18,603 INFO L481 AbstractCegarLoop]: Abstraction has 2092 states and 3600 transitions. [2020-11-12 03:31:18,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:18,604 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 3600 transitions. [2020-11-12 03:31:18,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 03:31:18,606 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:18,606 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:18,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:18,807 INFO L429 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:18,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:18,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1590189189, now seen corresponding path program 94 times [2020-11-12 03:31:18,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:18,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364506241] [2020-11-12 03:31:18,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:18,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:19,094 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:19,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364506241] [2020-11-12 03:31:19,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763301791] [2020-11-12 03:31:19,095 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:19,171 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:31:19,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:19,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 03:31:19,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:19,201 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:31:19,218 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:19,231 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:19,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:19,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-11-12 03:31:19,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572515227] [2020-11-12 03:31:19,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 03:31:19,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:19,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 03:31:19,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2020-11-12 03:31:19,232 INFO L87 Difference]: Start difference. First operand 2092 states and 3600 transitions. Second operand has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:20,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:20,233 INFO L93 Difference]: Finished difference Result 3114 states and 5575 transitions. [2020-11-12 03:31:20,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-12 03:31:20,234 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 03:31:20,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:20,238 INFO L225 Difference]: With dead ends: 3114 [2020-11-12 03:31:20,238 INFO L226 Difference]: Without dead ends: 2844 [2020-11-12 03:31:20,238 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2020-11-12 03:31:20,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2844 states. [2020-11-12 03:31:20,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2844 to 2092. [2020-11-12 03:31:20,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 2028 states have (on average 1.7751479289940828) internal successors, (3600), 2091 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:20,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 3600 transitions. [2020-11-12 03:31:20,272 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 3600 transitions. Word has length 96 [2020-11-12 03:31:20,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:20,272 INFO L481 AbstractCegarLoop]: Abstraction has 2092 states and 3600 transitions. [2020-11-12 03:31:20,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:20,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 3600 transitions. [2020-11-12 03:31:20,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 03:31:20,274 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:20,275 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:20,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2020-11-12 03:31:20,489 INFO L429 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:20,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:20,489 INFO L82 PathProgramCache]: Analyzing trace with hash 608838691, now seen corresponding path program 95 times [2020-11-12 03:31:20,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:20,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663667606] [2020-11-12 03:31:20,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:20,767 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:20,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663667606] [2020-11-12 03:31:20,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558146532] [2020-11-12 03:31:20,768 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:20,848 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-11-12 03:31:20,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:20,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-12 03:31:20,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:20,873 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:20,886 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:20,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:20,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-11-12 03:31:20,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657205023] [2020-11-12 03:31:20,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:31:20,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:20,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:31:20,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:31:20,888 INFO L87 Difference]: Start difference. First operand 2092 states and 3600 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:21,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:21,677 INFO L93 Difference]: Finished difference Result 3064 states and 5475 transitions. [2020-11-12 03:31:21,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-12 03:31:21,677 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 03:31:21,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:21,681 INFO L225 Difference]: With dead ends: 3064 [2020-11-12 03:31:21,681 INFO L226 Difference]: Without dead ends: 2794 [2020-11-12 03:31:21,681 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=474, Invalid=1418, Unknown=0, NotChecked=0, Total=1892 [2020-11-12 03:31:21,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2794 states. [2020-11-12 03:31:21,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2794 to 2092. [2020-11-12 03:31:21,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 2028 states have (on average 1.7751479289940828) internal successors, (3600), 2091 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:21,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 3600 transitions. [2020-11-12 03:31:21,704 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 3600 transitions. Word has length 96 [2020-11-12 03:31:21,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:21,704 INFO L481 AbstractCegarLoop]: Abstraction has 2092 states and 3600 transitions. [2020-11-12 03:31:21,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:21,704 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 3600 transitions. [2020-11-12 03:31:21,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 03:31:21,706 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:21,706 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:21,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,101 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:21,906 INFO L429 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:21,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:21,907 INFO L82 PathProgramCache]: Analyzing trace with hash -55245981, now seen corresponding path program 96 times [2020-11-12 03:31:21,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:21,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584152463] [2020-11-12 03:31:21,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:22,186 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:22,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584152463] [2020-11-12 03:31:22,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974005250] [2020-11-12 03:31:22,186 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:22,268 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-11-12 03:31:22,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:22,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:31:22,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:22,318 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:22,328 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:22,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:22,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-11-12 03:31:22,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624781763] [2020-11-12 03:31:22,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 03:31:22,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:22,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 03:31:22,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-11-12 03:31:22,329 INFO L87 Difference]: Start difference. First operand 2092 states and 3600 transitions. Second operand has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:23,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:23,373 INFO L93 Difference]: Finished difference Result 3014 states and 5375 transitions. [2020-11-12 03:31:23,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-12 03:31:23,374 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 03:31:23,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:23,376 INFO L225 Difference]: With dead ends: 3014 [2020-11-12 03:31:23,376 INFO L226 Difference]: Without dead ends: 2744 [2020-11-12 03:31:23,377 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=476, Invalid=1594, Unknown=0, NotChecked=0, Total=2070 [2020-11-12 03:31:23,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2744 states. [2020-11-12 03:31:23,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2744 to 2092. [2020-11-12 03:31:23,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 2028 states have (on average 1.7751479289940828) internal successors, (3600), 2091 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:23,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 3600 transitions. [2020-11-12 03:31:23,399 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 3600 transitions. Word has length 96 [2020-11-12 03:31:23,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:23,399 INFO L481 AbstractCegarLoop]: Abstraction has 2092 states and 3600 transitions. [2020-11-12 03:31:23,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:23,399 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 3600 transitions. [2020-11-12 03:31:23,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 03:31:23,401 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:23,401 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:23,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2020-11-12 03:31:23,602 INFO L429 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:23,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:23,602 INFO L82 PathProgramCache]: Analyzing trace with hash 243275905, now seen corresponding path program 97 times [2020-11-12 03:31:23,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:23,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362311313] [2020-11-12 03:31:23,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:23,860 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:23,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362311313] [2020-11-12 03:31:23,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165828660] [2020-11-12 03:31:23,861 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:23,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-12 03:31:23,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:23,958 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:23,973 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:23,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:23,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-11-12 03:31:23,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146194750] [2020-11-12 03:31:23,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:31:23,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:23,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:31:23,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:31:23,974 INFO L87 Difference]: Start difference. First operand 2092 states and 3600 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:24,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:24,868 INFO L93 Difference]: Finished difference Result 2964 states and 5275 transitions. [2020-11-12 03:31:24,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-12 03:31:24,869 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 03:31:24,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:24,872 INFO L225 Difference]: With dead ends: 2964 [2020-11-12 03:31:24,872 INFO L226 Difference]: Without dead ends: 2694 [2020-11-12 03:31:24,873 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=549, Invalid=1521, Unknown=0, NotChecked=0, Total=2070 [2020-11-12 03:31:24,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2020-11-12 03:31:24,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 2092. [2020-11-12 03:31:24,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 2028 states have (on average 1.7751479289940828) internal successors, (3600), 2091 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:24,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 3600 transitions. [2020-11-12 03:31:24,895 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 3600 transitions. Word has length 96 [2020-11-12 03:31:24,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:24,895 INFO L481 AbstractCegarLoop]: Abstraction has 2092 states and 3600 transitions. [2020-11-12 03:31:24,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:24,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 3600 transitions. [2020-11-12 03:31:24,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 03:31:24,897 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:24,897 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:25,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:25,098 INFO L429 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:25,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:25,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1378023487, now seen corresponding path program 98 times [2020-11-12 03:31:25,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:25,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146275096] [2020-11-12 03:31:25,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:25,365 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:25,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146275096] [2020-11-12 03:31:25,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609999232] [2020-11-12 03:31:25,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:25,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:31:25,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:25,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-12 03:31:25,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:25,494 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:31:25,511 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:25,520 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:25,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:25,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-11-12 03:31:25,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364182226] [2020-11-12 03:31:25,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 03:31:25,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:25,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 03:31:25,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2020-11-12 03:31:25,522 INFO L87 Difference]: Start difference. First operand 2092 states and 3600 transitions. Second operand has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:26,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:26,830 INFO L93 Difference]: Finished difference Result 3363 states and 6020 transitions. [2020-11-12 03:31:26,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-12 03:31:26,831 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 03:31:26,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:26,834 INFO L225 Difference]: With dead ends: 3363 [2020-11-12 03:31:26,834 INFO L226 Difference]: Without dead ends: 2854 [2020-11-12 03:31:26,835 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=665, Invalid=1987, Unknown=0, NotChecked=0, Total=2652 [2020-11-12 03:31:26,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2020-11-12 03:31:26,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 2112. [2020-11-12 03:31:26,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 2048 states have (on average 1.77978515625) internal successors, (3645), 2111 states have internal predecessors, (3645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:26,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 3645 transitions. [2020-11-12 03:31:26,855 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 3645 transitions. Word has length 96 [2020-11-12 03:31:26,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:26,855 INFO L481 AbstractCegarLoop]: Abstraction has 2112 states and 3645 transitions. [2020-11-12 03:31:26,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:26,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 3645 transitions. [2020-11-12 03:31:26,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 03:31:26,857 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:26,857 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:27,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,104 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:27,058 INFO L429 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:27,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:27,059 INFO L82 PathProgramCache]: Analyzing trace with hash -243933323, now seen corresponding path program 99 times [2020-11-12 03:31:27,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:27,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124267710] [2020-11-12 03:31:27,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:27,313 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:27,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124267710] [2020-11-12 03:31:27,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108250835] [2020-11-12 03:31:27,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:27,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-11-12 03:31:27,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:27,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 03:31:27,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:27,421 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:27,433 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:27,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:27,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-11-12 03:31:27,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133877331] [2020-11-12 03:31:27,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:31:27,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:27,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:31:27,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:31:27,435 INFO L87 Difference]: Start difference. First operand 2112 states and 3645 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:28,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:28,413 INFO L93 Difference]: Finished difference Result 4041 states and 6729 transitions. [2020-11-12 03:31:28,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 03:31:28,413 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 03:31:28,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:28,417 INFO L225 Difference]: With dead ends: 4041 [2020-11-12 03:31:28,417 INFO L226 Difference]: Without dead ends: 3756 [2020-11-12 03:31:28,418 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=641, Invalid=1615, Unknown=0, NotChecked=0, Total=2256 [2020-11-12 03:31:28,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3756 states. [2020-11-12 03:31:28,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3756 to 2197. [2020-11-12 03:31:28,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2197 states, 2133 states have (on average 1.8016877637130801) internal successors, (3843), 2196 states have internal predecessors, (3843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:28,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2197 states to 2197 states and 3843 transitions. [2020-11-12 03:31:28,445 INFO L78 Accepts]: Start accepts. Automaton has 2197 states and 3843 transitions. Word has length 96 [2020-11-12 03:31:28,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:28,445 INFO L481 AbstractCegarLoop]: Abstraction has 2197 states and 3843 transitions. [2020-11-12 03:31:28,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:28,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2197 states and 3843 transitions. [2020-11-12 03:31:28,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 03:31:28,447 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:28,447 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:28,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable109 [2020-11-12 03:31:28,647 INFO L429 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:28,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:28,648 INFO L82 PathProgramCache]: Analyzing trace with hash 596043869, now seen corresponding path program 100 times [2020-11-12 03:31:28,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:28,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187883141] [2020-11-12 03:31:28,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:28,930 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:28,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187883141] [2020-11-12 03:31:28,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124024238] [2020-11-12 03:31:28,931 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:29,009 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:31:29,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:29,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 03:31:29,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:29,046 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:31:29,068 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:29,080 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:29,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:29,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-11-12 03:31:29,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669436788] [2020-11-12 03:31:29,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 03:31:29,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:29,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 03:31:29,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2020-11-12 03:31:29,082 INFO L87 Difference]: Start difference. First operand 2197 states and 3843 transitions. Second operand has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:30,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:30,341 INFO L93 Difference]: Finished difference Result 3040 states and 5349 transitions. [2020-11-12 03:31:30,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 03:31:30,341 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 03:31:30,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:30,344 INFO L225 Difference]: With dead ends: 3040 [2020-11-12 03:31:30,344 INFO L226 Difference]: Without dead ends: 2644 [2020-11-12 03:31:30,345 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=746, Invalid=1906, Unknown=0, NotChecked=0, Total=2652 [2020-11-12 03:31:30,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2020-11-12 03:31:30,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 1812. [2020-11-12 03:31:30,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1812 states, 1748 states have (on average 1.7242562929061784) internal successors, (3014), 1811 states have internal predecessors, (3014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:30,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 3014 transitions. [2020-11-12 03:31:30,366 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 3014 transitions. Word has length 96 [2020-11-12 03:31:30,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:30,366 INFO L481 AbstractCegarLoop]: Abstraction has 1812 states and 3014 transitions. [2020-11-12 03:31:30,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:30,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 3014 transitions. [2020-11-12 03:31:30,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 03:31:30,367 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:30,367 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:30,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,106 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:30,568 INFO L429 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:30,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:30,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1279117660, now seen corresponding path program 101 times [2020-11-12 03:31:30,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:30,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846692120] [2020-11-12 03:31:30,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:30,937 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:30,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846692120] [2020-11-12 03:31:30,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168142859] [2020-11-12 03:31:30,937 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:31,018 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-11-12 03:31:31,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:31,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 03:31:31,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:31,062 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:31,082 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:31,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:31,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-11-12 03:31:31,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179023974] [2020-11-12 03:31:31,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-12 03:31:31,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:31,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-12 03:31:31,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-11-12 03:31:31,084 INFO L87 Difference]: Start difference. First operand 1812 states and 3014 transitions. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:31,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:31,734 INFO L93 Difference]: Finished difference Result 2909 states and 5144 transitions. [2020-11-12 03:31:31,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-12 03:31:31,735 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 03:31:31,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:31,738 INFO L225 Difference]: With dead ends: 2909 [2020-11-12 03:31:31,738 INFO L226 Difference]: Without dead ends: 2639 [2020-11-12 03:31:31,739 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=416, Invalid=1224, Unknown=0, NotChecked=0, Total=1640 [2020-11-12 03:31:31,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2020-11-12 03:31:31,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 1852. [2020-11-12 03:31:31,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1788 states have (on average 1.7248322147651007) internal successors, (3084), 1851 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:31,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 3084 transitions. [2020-11-12 03:31:31,762 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 3084 transitions. Word has length 101 [2020-11-12 03:31:31,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:31,762 INFO L481 AbstractCegarLoop]: Abstraction has 1852 states and 3084 transitions. [2020-11-12 03:31:31,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:31,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 3084 transitions. [2020-11-12 03:31:31,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 03:31:31,763 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:31,763 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:31,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:31,972 INFO L429 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:31,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:31,972 INFO L82 PathProgramCache]: Analyzing trace with hash 128767460, now seen corresponding path program 102 times [2020-11-12 03:31:31,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:31,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349300085] [2020-11-12 03:31:31,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:32,349 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:32,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349300085] [2020-11-12 03:31:32,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597755936] [2020-11-12 03:31:32,350 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:32,435 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-11-12 03:31:32,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:32,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 03:31:32,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:32,467 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:31:32,512 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:32,526 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:32,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:32,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-11-12 03:31:32,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219777101] [2020-11-12 03:31:32,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:31:32,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:32,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:31:32,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:31:32,527 INFO L87 Difference]: Start difference. First operand 1852 states and 3084 transitions. Second operand has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:33,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:33,295 INFO L93 Difference]: Finished difference Result 3244 states and 5794 transitions. [2020-11-12 03:31:33,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-12 03:31:33,295 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 03:31:33,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:33,298 INFO L225 Difference]: With dead ends: 3244 [2020-11-12 03:31:33,298 INFO L226 Difference]: Without dead ends: 2974 [2020-11-12 03:31:33,299 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=465, Invalid=1427, Unknown=0, NotChecked=0, Total=1892 [2020-11-12 03:31:33,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2020-11-12 03:31:33,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 1877. [2020-11-12 03:31:33,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1877 states, 1813 states have (on average 1.73138444567016) internal successors, (3139), 1876 states have internal predecessors, (3139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:33,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 3139 transitions. [2020-11-12 03:31:33,328 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 3139 transitions. Word has length 101 [2020-11-12 03:31:33,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:33,328 INFO L481 AbstractCegarLoop]: Abstraction has 1877 states and 3139 transitions. [2020-11-12 03:31:33,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:33,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 3139 transitions. [2020-11-12 03:31:33,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 03:31:33,329 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:33,329 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:33,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2020-11-12 03:31:33,530 INFO L429 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:33,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:33,531 INFO L82 PathProgramCache]: Analyzing trace with hash -792464126, now seen corresponding path program 103 times [2020-11-12 03:31:33,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:33,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497727811] [2020-11-12 03:31:33,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:33,864 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:33,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497727811] [2020-11-12 03:31:33,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626499717] [2020-11-12 03:31:33,864 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:33,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:33,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 03:31:33,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:33,988 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:34,002 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:34,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:34,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-11-12 03:31:34,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416404007] [2020-11-12 03:31:34,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-12 03:31:34,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:34,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-12 03:31:34,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2020-11-12 03:31:34,003 INFO L87 Difference]: Start difference. First operand 1877 states and 3139 transitions. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:34,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:34,732 INFO L93 Difference]: Finished difference Result 3259 states and 5804 transitions. [2020-11-12 03:31:34,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-12 03:31:34,733 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 03:31:34,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:34,736 INFO L225 Difference]: With dead ends: 3259 [2020-11-12 03:31:34,737 INFO L226 Difference]: Without dead ends: 2989 [2020-11-12 03:31:34,737 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=467, Invalid=1425, Unknown=0, NotChecked=0, Total=1892 [2020-11-12 03:31:34,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-11-12 03:31:34,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 1902. [2020-11-12 03:31:34,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1902 states, 1838 states have (on average 1.7377584330794342) internal successors, (3194), 1901 states have internal predecessors, (3194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:34,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 3194 transitions. [2020-11-12 03:31:34,761 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 3194 transitions. Word has length 101 [2020-11-12 03:31:34,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:34,761 INFO L481 AbstractCegarLoop]: Abstraction has 1902 states and 3194 transitions. [2020-11-12 03:31:34,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:34,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 3194 transitions. [2020-11-12 03:31:34,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 03:31:34,763 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:34,763 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:34,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2020-11-12 03:31:34,963 INFO L429 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:34,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:34,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1806654398, now seen corresponding path program 104 times [2020-11-12 03:31:34,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:34,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452186657] [2020-11-12 03:31:34,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:35,319 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:35,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452186657] [2020-11-12 03:31:35,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881314371] [2020-11-12 03:31:35,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:35,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:31:35,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:35,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 03:31:35,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:35,449 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:31:35,500 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:35,525 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:35,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:35,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-11-12 03:31:35,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524873118] [2020-11-12 03:31:35,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:31:35,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:35,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:31:35,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:31:35,527 INFO L87 Difference]: Start difference. First operand 1902 states and 3194 transitions. Second operand has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:36,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:36,413 INFO L93 Difference]: Finished difference Result 3259 states and 5784 transitions. [2020-11-12 03:31:36,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-12 03:31:36,414 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 03:31:36,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:36,417 INFO L225 Difference]: With dead ends: 3259 [2020-11-12 03:31:36,417 INFO L226 Difference]: Without dead ends: 2989 [2020-11-12 03:31:36,417 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=490, Invalid=1580, Unknown=0, NotChecked=0, Total=2070 [2020-11-12 03:31:36,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-11-12 03:31:36,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 1927. [2020-11-12 03:31:36,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1927 states, 1863 states have (on average 1.7439613526570048) internal successors, (3249), 1926 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:36,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1927 states to 1927 states and 3249 transitions. [2020-11-12 03:31:36,440 INFO L78 Accepts]: Start accepts. Automaton has 1927 states and 3249 transitions. Word has length 101 [2020-11-12 03:31:36,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:36,440 INFO L481 AbstractCegarLoop]: Abstraction has 1927 states and 3249 transitions. [2020-11-12 03:31:36,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:36,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1927 states and 3249 transitions. [2020-11-12 03:31:36,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 03:31:36,441 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:36,442 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:36,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2020-11-12 03:31:36,642 INFO L429 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:36,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:36,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1016099040, now seen corresponding path program 105 times [2020-11-12 03:31:36,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:36,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949412986] [2020-11-12 03:31:36,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:36,964 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:36,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949412986] [2020-11-12 03:31:36,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83554090] [2020-11-12 03:31:36,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:37,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-11-12 03:31:37,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:37,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:31:37,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:37,092 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:37,106 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:37,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:37,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-11-12 03:31:37,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821316775] [2020-11-12 03:31:37,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-12 03:31:37,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:37,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-12 03:31:37,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2020-11-12 03:31:37,107 INFO L87 Difference]: Start difference. First operand 1927 states and 3249 transitions. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:37,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:37,921 INFO L93 Difference]: Finished difference Result 3259 states and 5764 transitions. [2020-11-12 03:31:37,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-12 03:31:37,922 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 03:31:37,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:37,925 INFO L225 Difference]: With dead ends: 3259 [2020-11-12 03:31:37,925 INFO L226 Difference]: Without dead ends: 2989 [2020-11-12 03:31:37,926 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=506, Invalid=1564, Unknown=0, NotChecked=0, Total=2070 [2020-11-12 03:31:37,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-11-12 03:31:37,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 1952. [2020-11-12 03:31:37,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1888 states have (on average 1.75) internal successors, (3304), 1951 states have internal predecessors, (3304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:37,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 3304 transitions. [2020-11-12 03:31:37,949 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 3304 transitions. Word has length 101 [2020-11-12 03:31:37,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:37,950 INFO L481 AbstractCegarLoop]: Abstraction has 1952 states and 3304 transitions. [2020-11-12 03:31:37,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:37,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 3304 transitions. [2020-11-12 03:31:37,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 03:31:37,952 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:37,952 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:38,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,111 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:38,166 INFO L429 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:38,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:38,166 INFO L82 PathProgramCache]: Analyzing trace with hash 538128416, now seen corresponding path program 106 times [2020-11-12 03:31:38,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:38,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771403135] [2020-11-12 03:31:38,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:38,498 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:38,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771403135] [2020-11-12 03:31:38,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864461401] [2020-11-12 03:31:38,498 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:38,575 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:31:38,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:38,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 03:31:38,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:38,606 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:31:38,653 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:38,666 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:38,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:38,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-11-12 03:31:38,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574671646] [2020-11-12 03:31:38,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:31:38,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:38,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:31:38,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:31:38,667 INFO L87 Difference]: Start difference. First operand 1952 states and 3304 transitions. Second operand has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:39,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:39,702 INFO L93 Difference]: Finished difference Result 3259 states and 5744 transitions. [2020-11-12 03:31:39,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-12 03:31:39,703 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 03:31:39,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:39,706 INFO L225 Difference]: With dead ends: 3259 [2020-11-12 03:31:39,707 INFO L226 Difference]: Without dead ends: 2989 [2020-11-12 03:31:39,707 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=531, Invalid=1725, Unknown=0, NotChecked=0, Total=2256 [2020-11-12 03:31:39,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-11-12 03:31:39,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 1977. [2020-11-12 03:31:39,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1977 states, 1913 states have (on average 1.755880815473079) internal successors, (3359), 1976 states have internal predecessors, (3359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:39,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1977 states to 1977 states and 3359 transitions. [2020-11-12 03:31:39,731 INFO L78 Accepts]: Start accepts. Automaton has 1977 states and 3359 transitions. Word has length 101 [2020-11-12 03:31:39,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:39,731 INFO L481 AbstractCegarLoop]: Abstraction has 1977 states and 3359 transitions. [2020-11-12 03:31:39,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:39,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1977 states and 3359 transitions. [2020-11-12 03:31:39,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 03:31:39,733 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:39,733 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:39,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2020-11-12 03:31:39,934 INFO L429 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:39,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:39,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1684965950, now seen corresponding path program 107 times [2020-11-12 03:31:39,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:39,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566630068] [2020-11-12 03:31:39,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:40,235 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:40,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566630068] [2020-11-12 03:31:40,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985231689] [2020-11-12 03:31:40,236 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:40,331 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-11-12 03:31:40,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:40,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 03:31:40,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:40,384 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:40,401 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:40,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:40,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-11-12 03:31:40,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228121800] [2020-11-12 03:31:40,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-12 03:31:40,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:40,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-12 03:31:40,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2020-11-12 03:31:40,403 INFO L87 Difference]: Start difference. First operand 1977 states and 3359 transitions. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:41,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:41,294 INFO L93 Difference]: Finished difference Result 3259 states and 5724 transitions. [2020-11-12 03:31:41,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-12 03:31:41,295 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 03:31:41,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:41,299 INFO L225 Difference]: With dead ends: 3259 [2020-11-12 03:31:41,299 INFO L226 Difference]: Without dead ends: 2989 [2020-11-12 03:31:41,300 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=561, Invalid=1695, Unknown=0, NotChecked=0, Total=2256 [2020-11-12 03:31:41,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-11-12 03:31:41,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 2002. [2020-11-12 03:31:41,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2002 states, 1938 states have (on average 1.761609907120743) internal successors, (3414), 2001 states have internal predecessors, (3414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:41,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 3414 transitions. [2020-11-12 03:31:41,323 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 3414 transitions. Word has length 101 [2020-11-12 03:31:41,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:41,323 INFO L481 AbstractCegarLoop]: Abstraction has 2002 states and 3414 transitions. [2020-11-12 03:31:41,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:41,324 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 3414 transitions. [2020-11-12 03:31:41,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 03:31:41,325 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:41,325 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:41,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2020-11-12 03:31:41,526 INFO L429 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:41,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:41,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1321510530, now seen corresponding path program 108 times [2020-11-12 03:31:41,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:41,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751616096] [2020-11-12 03:31:41,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:41,844 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:41,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751616096] [2020-11-12 03:31:41,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247562223] [2020-11-12 03:31:41,844 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:41,928 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-11-12 03:31:41,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:41,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:31:41,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:42,004 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:42,016 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:42,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:42,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-11-12 03:31:42,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116398682] [2020-11-12 03:31:42,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:31:42,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:42,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:31:42,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:31:42,017 INFO L87 Difference]: Start difference. First operand 2002 states and 3414 transitions. Second operand has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:43,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:43,127 INFO L93 Difference]: Finished difference Result 3259 states and 5704 transitions. [2020-11-12 03:31:43,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-12 03:31:43,128 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 03:31:43,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:43,132 INFO L225 Difference]: With dead ends: 3259 [2020-11-12 03:31:43,132 INFO L226 Difference]: Without dead ends: 2989 [2020-11-12 03:31:43,132 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=567, Invalid=1883, Unknown=0, NotChecked=0, Total=2450 [2020-11-12 03:31:43,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-11-12 03:31:43,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 2027. [2020-11-12 03:31:43,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2027 states, 1963 states have (on average 1.7671930718288333) internal successors, (3469), 2026 states have internal predecessors, (3469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:43,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 3469 transitions. [2020-11-12 03:31:43,156 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 3469 transitions. Word has length 101 [2020-11-12 03:31:43,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:43,156 INFO L481 AbstractCegarLoop]: Abstraction has 2027 states and 3469 transitions. [2020-11-12 03:31:43,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:43,156 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 3469 transitions. [2020-11-12 03:31:43,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 03:31:43,158 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:43,158 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:43,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2020-11-12 03:31:43,359 INFO L429 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:43,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:43,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1992106268, now seen corresponding path program 109 times [2020-11-12 03:31:43,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:43,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188394978] [2020-11-12 03:31:43,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:43,658 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:43,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188394978] [2020-11-12 03:31:43,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744789834] [2020-11-12 03:31:43,659 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:43,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 03:31:43,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:43,783 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:43,794 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:43,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:43,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-11-12 03:31:43,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528822071] [2020-11-12 03:31:43,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-12 03:31:43,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:43,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-12 03:31:43,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2020-11-12 03:31:43,795 INFO L87 Difference]: Start difference. First operand 2027 states and 3469 transitions. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:44,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:44,772 INFO L93 Difference]: Finished difference Result 3259 states and 5684 transitions. [2020-11-12 03:31:44,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 03:31:44,772 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 03:31:44,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:44,776 INFO L225 Difference]: With dead ends: 3259 [2020-11-12 03:31:44,776 INFO L226 Difference]: Without dead ends: 2989 [2020-11-12 03:31:44,777 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=632, Invalid=1818, Unknown=0, NotChecked=0, Total=2450 [2020-11-12 03:31:44,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-11-12 03:31:44,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 2052. [2020-11-12 03:31:44,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 1988 states have (on average 1.772635814889336) internal successors, (3524), 2051 states have internal predecessors, (3524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:44,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 3524 transitions. [2020-11-12 03:31:44,803 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 3524 transitions. Word has length 101 [2020-11-12 03:31:44,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:44,803 INFO L481 AbstractCegarLoop]: Abstraction has 2052 states and 3524 transitions. [2020-11-12 03:31:44,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:44,803 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 3524 transitions. [2020-11-12 03:31:44,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 03:31:44,805 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:44,805 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:45,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:45,006 INFO L429 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:45,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:45,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1328021596, now seen corresponding path program 110 times [2020-11-12 03:31:45,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:45,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414005219] [2020-11-12 03:31:45,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:45,335 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:45,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414005219] [2020-11-12 03:31:45,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171497776] [2020-11-12 03:31:45,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:45,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:31:45,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:45,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 03:31:45,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:45,459 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:31:45,501 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:45,515 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:45,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:45,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-11-12 03:31:45,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795350027] [2020-11-12 03:31:45,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:31:45,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:45,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:31:45,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:31:45,517 INFO L87 Difference]: Start difference. First operand 2052 states and 3524 transitions. Second operand has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:46,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:46,725 INFO L93 Difference]: Finished difference Result 3259 states and 5664 transitions. [2020-11-12 03:31:46,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-12 03:31:46,726 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 03:31:46,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:46,729 INFO L225 Difference]: With dead ends: 3259 [2020-11-12 03:31:46,729 INFO L226 Difference]: Without dead ends: 2989 [2020-11-12 03:31:46,730 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=661, Invalid=1991, Unknown=0, NotChecked=0, Total=2652 [2020-11-12 03:31:46,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-11-12 03:31:46,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 2077. [2020-11-12 03:31:46,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2077 states, 2013 states have (on average 1.7779433681073025) internal successors, (3579), 2076 states have internal predecessors, (3579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:46,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 3579 transitions. [2020-11-12 03:31:46,753 INFO L78 Accepts]: Start accepts. Automaton has 2077 states and 3579 transitions. Word has length 101 [2020-11-12 03:31:46,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:46,753 INFO L481 AbstractCegarLoop]: Abstraction has 2077 states and 3579 transitions. [2020-11-12 03:31:46,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:46,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2077 states and 3579 transitions. [2020-11-12 03:31:46,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 03:31:46,755 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:46,755 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:46,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,116 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:46,956 INFO L429 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:46,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:46,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1626543482, now seen corresponding path program 111 times [2020-11-12 03:31:46,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:46,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790044203] [2020-11-12 03:31:46,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:47,249 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:47,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790044203] [2020-11-12 03:31:47,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89777261] [2020-11-12 03:31:47,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:47,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-11-12 03:31:47,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:47,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:31:47,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:47,390 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:47,402 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:47,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:47,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-11-12 03:31:47,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138521063] [2020-11-12 03:31:47,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-12 03:31:47,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:47,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-12 03:31:47,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2020-11-12 03:31:47,404 INFO L87 Difference]: Start difference. First operand 2077 states and 3579 transitions. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:48,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:48,447 INFO L93 Difference]: Finished difference Result 3259 states and 5644 transitions. [2020-11-12 03:31:48,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 03:31:48,448 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 03:31:48,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:48,451 INFO L225 Difference]: With dead ends: 3259 [2020-11-12 03:31:48,451 INFO L226 Difference]: Without dead ends: 2989 [2020-11-12 03:31:48,452 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=719, Invalid=1933, Unknown=0, NotChecked=0, Total=2652 [2020-11-12 03:31:48,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-11-12 03:31:48,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 2102. [2020-11-12 03:31:48,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2102 states, 2038 states have (on average 1.7831207065750736) internal successors, (3634), 2101 states have internal predecessors, (3634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:48,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2102 states to 2102 states and 3634 transitions. [2020-11-12 03:31:48,475 INFO L78 Accepts]: Start accepts. Automaton has 2102 states and 3634 transitions. Word has length 101 [2020-11-12 03:31:48,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:48,476 INFO L481 AbstractCegarLoop]: Abstraction has 2102 states and 3634 transitions. [2020-11-12 03:31:48,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:48,476 INFO L276 IsEmpty]: Start isEmpty. Operand 2102 states and 3634 transitions. [2020-11-12 03:31:48,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 03:31:48,477 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:48,477 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:48,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:48,678 INFO L429 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:48,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:48,679 INFO L82 PathProgramCache]: Analyzing trace with hash 5244090, now seen corresponding path program 112 times [2020-11-12 03:31:48,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:48,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150603724] [2020-11-12 03:31:48,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:48,980 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:48,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150603724] [2020-11-12 03:31:48,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558468696] [2020-11-12 03:31:48,981 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:49,056 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:31:49,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:49,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 03:31:49,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:49,088 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:31:49,133 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:49,143 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:49,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:49,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-11-12 03:31:49,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466249522] [2020-11-12 03:31:49,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:31:49,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:49,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:31:49,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:31:49,144 INFO L87 Difference]: Start difference. First operand 2102 states and 3634 transitions. Second operand has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:50,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:50,471 INFO L93 Difference]: Finished difference Result 3304 states and 5702 transitions. [2020-11-12 03:31:50,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-12 03:31:50,472 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 03:31:50,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:50,474 INFO L225 Difference]: With dead ends: 3304 [2020-11-12 03:31:50,474 INFO L226 Difference]: Without dead ends: 3034 [2020-11-12 03:31:50,474 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=750, Invalid=2112, Unknown=0, NotChecked=0, Total=2862 [2020-11-12 03:31:50,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3034 states. [2020-11-12 03:31:50,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3034 to 2127. [2020-11-12 03:31:50,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2127 states, 2063 states have (on average 1.7910809500727096) internal successors, (3695), 2126 states have internal predecessors, (3695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:50,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2127 states to 2127 states and 3695 transitions. [2020-11-12 03:31:50,497 INFO L78 Accepts]: Start accepts. Automaton has 2127 states and 3695 transitions. Word has length 101 [2020-11-12 03:31:50,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:50,497 INFO L481 AbstractCegarLoop]: Abstraction has 2127 states and 3695 transitions. [2020-11-12 03:31:50,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:50,497 INFO L276 IsEmpty]: Start isEmpty. Operand 2127 states and 3695 transitions. [2020-11-12 03:31:50,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 03:31:50,499 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:50,499 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:50,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2020-11-12 03:31:50,700 INFO L429 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:50,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:50,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1139334254, now seen corresponding path program 113 times [2020-11-12 03:31:50,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:50,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638107835] [2020-11-12 03:31:50,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:50,999 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:51,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638107835] [2020-11-12 03:31:51,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191972000] [2020-11-12 03:31:51,000 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:51,080 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-11-12 03:31:51,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:51,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 03:31:51,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:51,149 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:51,162 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:51,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:51,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-11-12 03:31:51,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061978322] [2020-11-12 03:31:51,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-12 03:31:51,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:51,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-12 03:31:51,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-11-12 03:31:51,164 INFO L87 Difference]: Start difference. First operand 2127 states and 3695 transitions. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:52,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:52,253 INFO L93 Difference]: Finished difference Result 4366 states and 7114 transitions. [2020-11-12 03:31:52,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 03:31:52,254 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 03:31:52,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:52,258 INFO L225 Difference]: With dead ends: 4366 [2020-11-12 03:31:52,259 INFO L226 Difference]: Without dead ends: 4081 [2020-11-12 03:31:52,259 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=823, Invalid=2039, Unknown=0, NotChecked=0, Total=2862 [2020-11-12 03:31:52,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4081 states. [2020-11-12 03:31:52,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4081 to 2212. [2020-11-12 03:31:52,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2212 states, 2148 states have (on average 1.8123836126629422) internal successors, (3893), 2211 states have internal predecessors, (3893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:52,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 3893 transitions. [2020-11-12 03:31:52,288 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 3893 transitions. Word has length 101 [2020-11-12 03:31:52,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:52,289 INFO L481 AbstractCegarLoop]: Abstraction has 2212 states and 3893 transitions. [2020-11-12 03:31:52,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:52,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 3893 transitions. [2020-11-12 03:31:52,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 03:31:52,290 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:52,290 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:52,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2020-11-12 03:31:52,494 INFO L429 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:52,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:52,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1979311446, now seen corresponding path program 114 times [2020-11-12 03:31:52,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:52,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124624338] [2020-11-12 03:31:52,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:52,779 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:52,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124624338] [2020-11-12 03:31:52,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359005253] [2020-11-12 03:31:52,780 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:52,879 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-11-12 03:31:52,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:52,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 03:31:52,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:52,954 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:52,966 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:52,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:52,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-11-12 03:31:52,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826179014] [2020-11-12 03:31:52,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-12 03:31:52,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:52,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-12 03:31:52,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-11-12 03:31:52,968 INFO L87 Difference]: Start difference. First operand 2212 states and 3893 transitions. Second operand has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:54,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:54,281 INFO L93 Difference]: Finished difference Result 3365 states and 5709 transitions. [2020-11-12 03:31:54,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 03:31:54,282 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 03:31:54,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:54,285 INFO L225 Difference]: With dead ends: 3365 [2020-11-12 03:31:54,285 INFO L226 Difference]: Without dead ends: 2969 [2020-11-12 03:31:54,286 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=770, Invalid=2200, Unknown=0, NotChecked=0, Total=2970 [2020-11-12 03:31:54,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2020-11-12 03:31:54,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 1767. [2020-11-12 03:31:54,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1767 states, 1703 states have (on average 1.7228420434527305) internal successors, (2934), 1766 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:54,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 2934 transitions. [2020-11-12 03:31:54,306 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 2934 transitions. Word has length 101 [2020-11-12 03:31:54,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:54,307 INFO L481 AbstractCegarLoop]: Abstraction has 1767 states and 2934 transitions. [2020-11-12 03:31:54,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:54,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 2934 transitions. [2020-11-12 03:31:54,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:31:54,308 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:54,308 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:54,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2020-11-12 03:31:54,509 INFO L429 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:54,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:54,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1123478080, now seen corresponding path program 115 times [2020-11-12 03:31:54,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:54,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260627466] [2020-11-12 03:31:54,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:54,915 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:54,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260627466] [2020-11-12 03:31:54,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041040301] [2020-11-12 03:31:54,916 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:54,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 03:31:54,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:55,048 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:55,092 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:55,117 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:55,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:55,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 25 [2020-11-12 03:31:55,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073708771] [2020-11-12 03:31:55,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:31:55,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:55,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:31:55,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:31:55,119 INFO L87 Difference]: Start difference. First operand 1767 states and 2934 transitions. Second operand has 25 states, 25 states have (on average 5.16) internal successors, (129), 25 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:55,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:55,950 INFO L93 Difference]: Finished difference Result 2925 states and 4978 transitions. [2020-11-12 03:31:55,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-12 03:31:55,950 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.16) internal successors, (129), 25 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:31:55,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:55,953 INFO L225 Difference]: With dead ends: 2925 [2020-11-12 03:31:55,953 INFO L226 Difference]: Without dead ends: 2591 [2020-11-12 03:31:55,954 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2020-11-12 03:31:55,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2020-11-12 03:31:55,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 1842. [2020-11-12 03:31:55,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1778 states have (on average 1.734533183352081) internal successors, (3084), 1841 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:55,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 3084 transitions. [2020-11-12 03:31:55,975 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 3084 transitions. Word has length 106 [2020-11-12 03:31:55,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:55,975 INFO L481 AbstractCegarLoop]: Abstraction has 1842 states and 3084 transitions. [2020-11-12 03:31:55,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.16) internal successors, (129), 25 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:55,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 3084 transitions. [2020-11-12 03:31:55,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:31:55,977 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:55,977 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:56,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-11-12 03:31:56,178 INFO L429 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:56,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:56,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1037274210, now seen corresponding path program 116 times [2020-11-12 03:31:56,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:56,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652246191] [2020-11-12 03:31:56,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:56,580 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:56,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652246191] [2020-11-12 03:31:56,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312902394] [2020-11-12 03:31:56,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:56,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:31:56,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:56,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 03:31:56,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:56,704 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:56,720 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:56,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:56,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-11-12 03:31:56,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38825900] [2020-11-12 03:31:56,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:31:56,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:56,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:31:56,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:31:56,722 INFO L87 Difference]: Start difference. First operand 1842 states and 3084 transitions. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:57,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:57,366 INFO L93 Difference]: Finished difference Result 3454 states and 6234 transitions. [2020-11-12 03:31:57,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-12 03:31:57,367 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:31:57,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:57,371 INFO L225 Difference]: With dead ends: 3454 [2020-11-12 03:31:57,371 INFO L226 Difference]: Without dead ends: 3184 [2020-11-12 03:31:57,371 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=446, Invalid=1194, Unknown=0, NotChecked=0, Total=1640 [2020-11-12 03:31:57,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3184 states. [2020-11-12 03:31:57,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3184 to 1937. [2020-11-12 03:31:57,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1937 states, 1873 states have (on average 1.7319807794981315) internal successors, (3244), 1936 states have internal predecessors, (3244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:57,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 3244 transitions. [2020-11-12 03:31:57,396 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 3244 transitions. Word has length 106 [2020-11-12 03:31:57,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:57,397 INFO L481 AbstractCegarLoop]: Abstraction has 1937 states and 3244 transitions. [2020-11-12 03:31:57,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:57,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 3244 transitions. [2020-11-12 03:31:57,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:31:57,399 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:57,399 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:57,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2020-11-12 03:31:57,601 INFO L429 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:57,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:57,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1932494366, now seen corresponding path program 117 times [2020-11-12 03:31:57,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:57,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799505002] [2020-11-12 03:31:57,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:57,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:58,043 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:58,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799505002] [2020-11-12 03:31:58,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592254853] [2020-11-12 03:31:58,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:58,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-11-12 03:31:58,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:58,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 03:31:58,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:58,156 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:31:58,207 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:58,222 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:58,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:58,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-11-12 03:31:58,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229791607] [2020-11-12 03:31:58,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:31:58,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:58,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:31:58,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:31:58,224 INFO L87 Difference]: Start difference. First operand 1937 states and 3244 transitions. Second operand has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:59,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:59,038 INFO L93 Difference]: Finished difference Result 3409 states and 6124 transitions. [2020-11-12 03:31:59,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-12 03:31:59,039 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:31:59,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:59,043 INFO L225 Difference]: With dead ends: 3409 [2020-11-12 03:31:59,043 INFO L226 Difference]: Without dead ends: 3139 [2020-11-12 03:31:59,043 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=507, Invalid=1473, Unknown=0, NotChecked=0, Total=1980 [2020-11-12 03:31:59,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2020-11-12 03:31:59,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 1987. [2020-11-12 03:31:59,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1987 states, 1923 states have (on average 1.7285491419656787) internal successors, (3324), 1986 states have internal predecessors, (3324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:59,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1987 states to 1987 states and 3324 transitions. [2020-11-12 03:31:59,070 INFO L78 Accepts]: Start accepts. Automaton has 1987 states and 3324 transitions. Word has length 106 [2020-11-12 03:31:59,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:59,071 INFO L481 AbstractCegarLoop]: Abstraction has 1987 states and 3324 transitions. [2020-11-12 03:31:59,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:59,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1987 states and 3324 transitions. [2020-11-12 03:31:59,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:31:59,073 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:59,073 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:59,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:59,275 INFO L429 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:59,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:59,276 INFO L82 PathProgramCache]: Analyzing trace with hash 835680634, now seen corresponding path program 118 times [2020-11-12 03:31:59,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:59,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433980479] [2020-11-12 03:31:59,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:59,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:59,660 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:59,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433980479] [2020-11-12 03:31:59,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959325251] [2020-11-12 03:31:59,661 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:59,741 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:31:59,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:59,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:31:59,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:59,788 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:59,804 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:59,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:59,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-11-12 03:31:59,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097440142] [2020-11-12 03:31:59,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:31:59,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:59,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:31:59,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:31:59,805 INFO L87 Difference]: Start difference. First operand 1987 states and 3324 transitions. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:00,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:00,539 INFO L93 Difference]: Finished difference Result 3434 states and 6154 transitions. [2020-11-12 03:32:00,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-12 03:32:00,540 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:32:00,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:00,544 INFO L225 Difference]: With dead ends: 3434 [2020-11-12 03:32:00,544 INFO L226 Difference]: Without dead ends: 3164 [2020-11-12 03:32:00,544 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=454, Invalid=1352, Unknown=0, NotChecked=0, Total=1806 [2020-11-12 03:32:00,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3164 states. [2020-11-12 03:32:00,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3164 to 2037. [2020-11-12 03:32:00,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2037 states, 1973 states have (on average 1.7252914343639127) internal successors, (3404), 2036 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:00,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2037 states to 2037 states and 3404 transitions. [2020-11-12 03:32:00,568 INFO L78 Accepts]: Start accepts. Automaton has 2037 states and 3404 transitions. Word has length 106 [2020-11-12 03:32:00,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:00,569 INFO L481 AbstractCegarLoop]: Abstraction has 2037 states and 3404 transitions. [2020-11-12 03:32:00,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:00,569 INFO L276 IsEmpty]: Start isEmpty. Operand 2037 states and 3404 transitions. [2020-11-12 03:32:00,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:32:00,571 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:00,571 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:00,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2020-11-12 03:32:00,772 INFO L429 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:00,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:00,772 INFO L82 PathProgramCache]: Analyzing trace with hash -2051401542, now seen corresponding path program 119 times [2020-11-12 03:32:00,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:00,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881414539] [2020-11-12 03:32:00,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:01,173 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:01,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881414539] [2020-11-12 03:32:01,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868443505] [2020-11-12 03:32:01,174 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:01,257 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-11-12 03:32:01,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:01,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 03:32:01,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:01,287 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:32:01,336 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:01,352 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:01,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:01,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-11-12 03:32:01,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902487138] [2020-11-12 03:32:01,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:32:01,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:01,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:32:01,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:32:01,354 INFO L87 Difference]: Start difference. First operand 2037 states and 3404 transitions. Second operand has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:02,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:02,289 INFO L93 Difference]: Finished difference Result 3434 states and 6134 transitions. [2020-11-12 03:32:02,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-12 03:32:02,290 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:32:02,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:02,294 INFO L225 Difference]: With dead ends: 3434 [2020-11-12 03:32:02,294 INFO L226 Difference]: Without dead ends: 3164 [2020-11-12 03:32:02,294 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=523, Invalid=1639, Unknown=0, NotChecked=0, Total=2162 [2020-11-12 03:32:02,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3164 states. [2020-11-12 03:32:02,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3164 to 2062. [2020-11-12 03:32:02,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2062 states, 1998 states have (on average 1.7312312312312312) internal successors, (3459), 2061 states have internal predecessors, (3459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:02,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 3459 transitions. [2020-11-12 03:32:02,318 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 3459 transitions. Word has length 106 [2020-11-12 03:32:02,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:02,319 INFO L481 AbstractCegarLoop]: Abstraction has 2062 states and 3459 transitions. [2020-11-12 03:32:02,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:02,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 3459 transitions. [2020-11-12 03:32:02,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:32:02,320 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:02,320 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:02,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2020-11-12 03:32:02,521 INFO L429 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:02,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:02,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1322334168, now seen corresponding path program 120 times [2020-11-12 03:32:02,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:02,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618196733] [2020-11-12 03:32:02,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:02,914 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:02,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618196733] [2020-11-12 03:32:02,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39187209] [2020-11-12 03:32:02,915 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:03,005 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-11-12 03:32:03,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:03,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 03:32:03,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:03,056 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:03,070 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:03,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:03,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-11-12 03:32:03,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221829263] [2020-11-12 03:32:03,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:32:03,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:03,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:32:03,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:32:03,072 INFO L87 Difference]: Start difference. First operand 2062 states and 3459 transitions. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:03,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:03,890 INFO L93 Difference]: Finished difference Result 3409 states and 6089 transitions. [2020-11-12 03:32:03,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-12 03:32:03,891 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:32:03,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:03,896 INFO L225 Difference]: With dead ends: 3409 [2020-11-12 03:32:03,896 INFO L226 Difference]: Without dead ends: 3139 [2020-11-12 03:32:03,896 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=478, Invalid=1502, Unknown=0, NotChecked=0, Total=1980 [2020-11-12 03:32:03,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2020-11-12 03:32:03,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 2087. [2020-11-12 03:32:03,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2087 states, 2023 states have (on average 1.7370242214532872) internal successors, (3514), 2086 states have internal predecessors, (3514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:03,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2087 states to 2087 states and 3514 transitions. [2020-11-12 03:32:03,920 INFO L78 Accepts]: Start accepts. Automaton has 2087 states and 3514 transitions. Word has length 106 [2020-11-12 03:32:03,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:03,920 INFO L481 AbstractCegarLoop]: Abstraction has 2087 states and 3514 transitions. [2020-11-12 03:32:03,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:03,920 INFO L276 IsEmpty]: Start isEmpty. Operand 2087 states and 3514 transitions. [2020-11-12 03:32:03,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:32:03,922 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:03,922 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:04,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,126 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:04,125 INFO L429 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:04,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:04,125 INFO L82 PathProgramCache]: Analyzing trace with hash 308143896, now seen corresponding path program 121 times [2020-11-12 03:32:04,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:04,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003547955] [2020-11-12 03:32:04,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:04,509 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:04,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003547955] [2020-11-12 03:32:04,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311889025] [2020-11-12 03:32:04,510 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:04,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 03:32:04,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:04,618 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:32:04,661 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:04,680 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:04,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:04,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-11-12 03:32:04,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456017365] [2020-11-12 03:32:04,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:32:04,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:04,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:32:04,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:32:04,682 INFO L87 Difference]: Start difference. First operand 2087 states and 3514 transitions. Second operand has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:05,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:05,750 INFO L93 Difference]: Finished difference Result 3384 states and 6044 transitions. [2020-11-12 03:32:05,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-12 03:32:05,751 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:32:05,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:05,755 INFO L225 Difference]: With dead ends: 3384 [2020-11-12 03:32:05,755 INFO L226 Difference]: Without dead ends: 3114 [2020-11-12 03:32:05,755 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=555, Invalid=1797, Unknown=0, NotChecked=0, Total=2352 [2020-11-12 03:32:05,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3114 states. [2020-11-12 03:32:05,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3114 to 2112. [2020-11-12 03:32:05,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 2048 states have (on average 1.74267578125) internal successors, (3569), 2111 states have internal predecessors, (3569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:05,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 3569 transitions. [2020-11-12 03:32:05,777 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 3569 transitions. Word has length 106 [2020-11-12 03:32:05,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:05,777 INFO L481 AbstractCegarLoop]: Abstraction has 2112 states and 3569 transitions. [2020-11-12 03:32:05,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:05,777 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 3569 transitions. [2020-11-12 03:32:05,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:32:05,779 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:05,779 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:05,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,127 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:05,980 INFO L429 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:05,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:05,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1164069962, now seen corresponding path program 122 times [2020-11-12 03:32:05,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:05,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554116508] [2020-11-12 03:32:05,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:06,344 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:06,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554116508] [2020-11-12 03:32:06,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933732255] [2020-11-12 03:32:06,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:06,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:32:06,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:06,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 03:32:06,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:06,475 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:06,489 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:06,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:06,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-11-12 03:32:06,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891926687] [2020-11-12 03:32:06,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:32:06,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:06,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:32:06,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:32:06,491 INFO L87 Difference]: Start difference. First operand 2112 states and 3569 transitions. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:07,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:07,389 INFO L93 Difference]: Finished difference Result 3359 states and 5999 transitions. [2020-11-12 03:32:07,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-12 03:32:07,390 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:32:07,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:07,394 INFO L225 Difference]: With dead ends: 3359 [2020-11-12 03:32:07,394 INFO L226 Difference]: Without dead ends: 3089 [2020-11-12 03:32:07,395 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=518, Invalid=1644, Unknown=0, NotChecked=0, Total=2162 [2020-11-12 03:32:07,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3089 states. [2020-11-12 03:32:07,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3089 to 2137. [2020-11-12 03:32:07,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2137 states, 2073 states have (on average 1.748191027496382) internal successors, (3624), 2136 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:07,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 3624 transitions. [2020-11-12 03:32:07,420 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 3624 transitions. Word has length 106 [2020-11-12 03:32:07,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:07,420 INFO L481 AbstractCegarLoop]: Abstraction has 2137 states and 3624 transitions. [2020-11-12 03:32:07,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:07,420 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 3624 transitions. [2020-11-12 03:32:07,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:32:07,422 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:07,422 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:07,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,128 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:07,623 INFO L429 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:07,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:07,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1642040586, now seen corresponding path program 123 times [2020-11-12 03:32:07,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:07,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443018500] [2020-11-12 03:32:07,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:08,002 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:08,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443018500] [2020-11-12 03:32:08,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846278372] [2020-11-12 03:32:08,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:08,092 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-11-12 03:32:08,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:08,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:32:08,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:08,178 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:08,198 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:08,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:08,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-11-12 03:32:08,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711282319] [2020-11-12 03:32:08,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:32:08,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:08,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:32:08,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:32:08,200 INFO L87 Difference]: Start difference. First operand 2137 states and 3624 transitions. Second operand has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:09,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:09,279 INFO L93 Difference]: Finished difference Result 3334 states and 5954 transitions. [2020-11-12 03:32:09,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-12 03:32:09,280 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:32:09,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:09,283 INFO L225 Difference]: With dead ends: 3334 [2020-11-12 03:32:09,283 INFO L226 Difference]: Without dead ends: 3064 [2020-11-12 03:32:09,284 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=528, Invalid=1824, Unknown=0, NotChecked=0, Total=2352 [2020-11-12 03:32:09,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3064 states. [2020-11-12 03:32:09,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3064 to 2162. [2020-11-12 03:32:09,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2162 states, 2098 states have (on average 1.7535748331744518) internal successors, (3679), 2161 states have internal predecessors, (3679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:09,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2162 states to 2162 states and 3679 transitions. [2020-11-12 03:32:09,309 INFO L78 Accepts]: Start accepts. Automaton has 2162 states and 3679 transitions. Word has length 106 [2020-11-12 03:32:09,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:09,309 INFO L481 AbstractCegarLoop]: Abstraction has 2162 states and 3679 transitions. [2020-11-12 03:32:09,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:09,309 INFO L276 IsEmpty]: Start isEmpty. Operand 2162 states and 3679 transitions. [2020-11-12 03:32:09,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:32:09,311 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:09,311 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:09,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2020-11-12 03:32:09,511 INFO L429 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:09,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:09,512 INFO L82 PathProgramCache]: Analyzing trace with hash -495203052, now seen corresponding path program 124 times [2020-11-12 03:32:09,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:09,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880976551] [2020-11-12 03:32:09,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:09,850 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:09,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880976551] [2020-11-12 03:32:09,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143481262] [2020-11-12 03:32:09,851 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:09,933 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:32:09,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:09,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:32:09,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:09,983 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:10,011 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:10,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:10,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-11-12 03:32:10,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609421733] [2020-11-12 03:32:10,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:32:10,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:10,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:32:10,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:32:10,012 INFO L87 Difference]: Start difference. First operand 2162 states and 3679 transitions. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:11,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:11,024 INFO L93 Difference]: Finished difference Result 3309 states and 5909 transitions. [2020-11-12 03:32:11,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-12 03:32:11,025 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:32:11,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:11,028 INFO L225 Difference]: With dead ends: 3309 [2020-11-12 03:32:11,029 INFO L226 Difference]: Without dead ends: 3039 [2020-11-12 03:32:11,029 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=574, Invalid=1778, Unknown=0, NotChecked=0, Total=2352 [2020-11-12 03:32:11,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3039 states. [2020-11-12 03:32:11,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3039 to 2187. [2020-11-12 03:32:11,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2187 states, 2123 states have (on average 1.7588318417333961) internal successors, (3734), 2186 states have internal predecessors, (3734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:11,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 3734 transitions. [2020-11-12 03:32:11,054 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 3734 transitions. Word has length 106 [2020-11-12 03:32:11,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:11,054 INFO L481 AbstractCegarLoop]: Abstraction has 2187 states and 3734 transitions. [2020-11-12 03:32:11,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:11,054 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 3734 transitions. [2020-11-12 03:32:11,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:32:11,056 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:11,056 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:11,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2020-11-12 03:32:11,268 INFO L429 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:11,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:11,268 INFO L82 PathProgramCache]: Analyzing trace with hash 793287764, now seen corresponding path program 125 times [2020-11-12 03:32:11,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:11,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126205144] [2020-11-12 03:32:11,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:11,627 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:11,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126205144] [2020-11-12 03:32:11,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440550882] [2020-11-12 03:32:11,627 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:11,713 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-11-12 03:32:11,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:11,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 03:32:11,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:11,745 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:32:11,792 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:11,805 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:11,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:11,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-11-12 03:32:11,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481251063] [2020-11-12 03:32:11,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:32:11,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:11,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:32:11,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:32:11,806 INFO L87 Difference]: Start difference. First operand 2187 states and 3734 transitions. Second operand has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:13,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:13,107 INFO L93 Difference]: Finished difference Result 3284 states and 5864 transitions. [2020-11-12 03:32:13,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-12 03:32:13,108 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:32:13,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:13,112 INFO L225 Difference]: With dead ends: 3284 [2020-11-12 03:32:13,112 INFO L226 Difference]: Without dead ends: 3014 [2020-11-12 03:32:13,113 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=667, Invalid=2089, Unknown=0, NotChecked=0, Total=2756 [2020-11-12 03:32:13,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3014 states. [2020-11-12 03:32:13,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3014 to 2212. [2020-11-12 03:32:13,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2212 states, 2148 states have (on average 1.7639664804469273) internal successors, (3789), 2211 states have internal predecessors, (3789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:13,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 3789 transitions. [2020-11-12 03:32:13,138 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 3789 transitions. Word has length 106 [2020-11-12 03:32:13,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:13,138 INFO L481 AbstractCegarLoop]: Abstraction has 2212 states and 3789 transitions. [2020-11-12 03:32:13,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:13,138 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 3789 transitions. [2020-11-12 03:32:13,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:32:13,140 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:13,140 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:13,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:13,341 INFO L429 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:13,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:13,342 INFO L82 PathProgramCache]: Analyzing trace with hash -188062734, now seen corresponding path program 126 times [2020-11-12 03:32:13,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:13,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983674900] [2020-11-12 03:32:13,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:13,672 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:13,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983674900] [2020-11-12 03:32:13,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462178476] [2020-11-12 03:32:13,672 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:13,764 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-11-12 03:32:13,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:13,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 03:32:13,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:13,819 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:13,835 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:13,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:13,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-11-12 03:32:13,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599596268] [2020-11-12 03:32:13,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:32:13,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:13,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:32:13,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:32:13,837 INFO L87 Difference]: Start difference. First operand 2212 states and 3789 transitions. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:14,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:14,977 INFO L93 Difference]: Finished difference Result 3259 states and 5819 transitions. [2020-11-12 03:32:14,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 03:32:14,978 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:32:14,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:14,981 INFO L225 Difference]: With dead ends: 3259 [2020-11-12 03:32:14,982 INFO L226 Difference]: Without dead ends: 2989 [2020-11-12 03:32:14,982 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=646, Invalid=1904, Unknown=0, NotChecked=0, Total=2550 [2020-11-12 03:32:14,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-11-12 03:32:15,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 2237. [2020-11-12 03:32:15,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2237 states, 2173 states have (on average 1.7689829728485964) internal successors, (3844), 2236 states have internal predecessors, (3844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:15,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2237 states to 2237 states and 3844 transitions. [2020-11-12 03:32:15,008 INFO L78 Accepts]: Start accepts. Automaton has 2237 states and 3844 transitions. Word has length 106 [2020-11-12 03:32:15,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:15,008 INFO L481 AbstractCegarLoop]: Abstraction has 2237 states and 3844 transitions. [2020-11-12 03:32:15,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:15,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2237 states and 3844 transitions. [2020-11-12 03:32:15,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:32:15,009 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:15,010 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:15,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2020-11-12 03:32:15,210 INFO L429 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:15,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:15,211 INFO L82 PathProgramCache]: Analyzing trace with hash -852147406, now seen corresponding path program 127 times [2020-11-12 03:32:15,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:15,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227075385] [2020-11-12 03:32:15,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:15,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:15,567 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:15,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227075385] [2020-11-12 03:32:15,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307522938] [2020-11-12 03:32:15,568 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:15,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 03:32:15,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:15,678 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:32:15,725 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:15,736 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:15,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:15,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-11-12 03:32:15,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151331595] [2020-11-12 03:32:15,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:32:15,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:15,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:32:15,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:32:15,738 INFO L87 Difference]: Start difference. First operand 2237 states and 3844 transitions. Second operand has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:17,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:17,175 INFO L93 Difference]: Finished difference Result 3234 states and 5774 transitions. [2020-11-12 03:32:17,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-12 03:32:17,176 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:32:17,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:17,180 INFO L225 Difference]: With dead ends: 3234 [2020-11-12 03:32:17,180 INFO L226 Difference]: Without dead ends: 2964 [2020-11-12 03:32:17,181 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=747, Invalid=2223, Unknown=0, NotChecked=0, Total=2970 [2020-11-12 03:32:17,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2020-11-12 03:32:17,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 2262. [2020-11-12 03:32:17,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2262 states, 2198 states have (on average 1.7738853503184713) internal successors, (3899), 2261 states have internal predecessors, (3899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:17,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 3899 transitions. [2020-11-12 03:32:17,206 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 3899 transitions. Word has length 106 [2020-11-12 03:32:17,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:17,206 INFO L481 AbstractCegarLoop]: Abstraction has 2262 states and 3899 transitions. [2020-11-12 03:32:17,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:17,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 3899 transitions. [2020-11-12 03:32:17,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:32:17,208 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:17,208 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:17,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2020-11-12 03:32:17,409 INFO L429 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:17,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:17,410 INFO L82 PathProgramCache]: Analyzing trace with hash -553625520, now seen corresponding path program 128 times [2020-11-12 03:32:17,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:17,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756960258] [2020-11-12 03:32:17,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:17,734 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:17,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756960258] [2020-11-12 03:32:17,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896703095] [2020-11-12 03:32:17,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:17,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:32:17,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:17,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 03:32:17,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:17,889 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:17,900 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:17,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:17,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-11-12 03:32:17,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122556711] [2020-11-12 03:32:17,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:32:17,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:17,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:32:17,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:32:17,902 INFO L87 Difference]: Start difference. First operand 2262 states and 3899 transitions. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:19,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:19,059 INFO L93 Difference]: Finished difference Result 3209 states and 5729 transitions. [2020-11-12 03:32:19,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 03:32:19,060 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:32:19,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:19,064 INFO L225 Difference]: With dead ends: 3209 [2020-11-12 03:32:19,064 INFO L226 Difference]: Without dead ends: 2939 [2020-11-12 03:32:19,064 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=734, Invalid=2022, Unknown=0, NotChecked=0, Total=2756 [2020-11-12 03:32:19,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2020-11-12 03:32:19,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 2287. [2020-11-12 03:32:19,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2287 states, 2223 states have (on average 1.7786774628879891) internal successors, (3954), 2286 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:19,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 3954 transitions. [2020-11-12 03:32:19,090 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 3954 transitions. Word has length 106 [2020-11-12 03:32:19,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:19,090 INFO L481 AbstractCegarLoop]: Abstraction has 2287 states and 3954 transitions. [2020-11-12 03:32:19,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:19,090 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 3954 transitions. [2020-11-12 03:32:19,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:32:19,092 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:19,092 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:19,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2020-11-12 03:32:19,293 INFO L429 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:19,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:19,293 INFO L82 PathProgramCache]: Analyzing trace with hash 2120042384, now seen corresponding path program 129 times [2020-11-12 03:32:19,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:19,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834928586] [2020-11-12 03:32:19,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:19,626 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:19,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834928586] [2020-11-12 03:32:19,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435429315] [2020-11-12 03:32:19,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:19,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-11-12 03:32:19,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:19,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:32:19,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:19,814 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:19,829 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:19,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:19,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-11-12 03:32:19,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630919249] [2020-11-12 03:32:19,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:32:19,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:19,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:32:19,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:32:19,831 INFO L87 Difference]: Start difference. First operand 2287 states and 3954 transitions. Second operand has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:21,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:21,271 INFO L93 Difference]: Finished difference Result 3229 states and 5762 transitions. [2020-11-12 03:32:21,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-12 03:32:21,272 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:32:21,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:21,274 INFO L225 Difference]: With dead ends: 3229 [2020-11-12 03:32:21,275 INFO L226 Difference]: Without dead ends: 2959 [2020-11-12 03:32:21,275 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=714, Invalid=2256, Unknown=0, NotChecked=0, Total=2970 [2020-11-12 03:32:21,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2020-11-12 03:32:21,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 2312. [2020-11-12 03:32:21,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2312 states, 2248 states have (on average 1.7860320284697508) internal successors, (4015), 2311 states have internal predecessors, (4015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:21,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 4015 transitions. [2020-11-12 03:32:21,301 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 4015 transitions. Word has length 106 [2020-11-12 03:32:21,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:21,301 INFO L481 AbstractCegarLoop]: Abstraction has 2312 states and 4015 transitions. [2020-11-12 03:32:21,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:21,302 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 4015 transitions. [2020-11-12 03:32:21,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:32:21,304 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:21,304 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:21,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:21,504 INFO L429 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:21,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:21,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1040834748, now seen corresponding path program 130 times [2020-11-12 03:32:21,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:21,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594926056] [2020-11-12 03:32:21,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:21,814 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:21,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594926056] [2020-11-12 03:32:21,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835280394] [2020-11-12 03:32:21,814 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:21,893 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:32:21,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:21,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:32:21,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:21,945 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:21,956 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:21,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:21,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-11-12 03:32:21,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81595056] [2020-11-12 03:32:21,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:32:21,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:21,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:32:21,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:32:21,957 INFO L87 Difference]: Start difference. First operand 2312 states and 4015 transitions. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:23,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:23,280 INFO L93 Difference]: Finished difference Result 4291 states and 7199 transitions. [2020-11-12 03:32:23,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 03:32:23,281 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:32:23,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:23,284 INFO L225 Difference]: With dead ends: 4291 [2020-11-12 03:32:23,284 INFO L226 Difference]: Without dead ends: 4006 [2020-11-12 03:32:23,284 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 754 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=839, Invalid=2131, Unknown=0, NotChecked=0, Total=2970 [2020-11-12 03:32:23,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4006 states. [2020-11-12 03:32:23,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4006 to 2397. [2020-11-12 03:32:23,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2397 states, 2333 states have (on average 1.8058294042006) internal successors, (4213), 2396 states have internal predecessors, (4213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:23,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2397 states to 2397 states and 4213 transitions. [2020-11-12 03:32:23,310 INFO L78 Accepts]: Start accepts. Automaton has 2397 states and 4213 transitions. Word has length 106 [2020-11-12 03:32:23,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:23,310 INFO L481 AbstractCegarLoop]: Abstraction has 2397 states and 4213 transitions. [2020-11-12 03:32:23,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:23,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2397 states and 4213 transitions. [2020-11-12 03:32:23,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:32:23,312 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:23,312 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:23,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,136 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:23,513 INFO L429 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:23,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:23,513 INFO L82 PathProgramCache]: Analyzing trace with hash -200857556, now seen corresponding path program 131 times [2020-11-12 03:32:23,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:23,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005614611] [2020-11-12 03:32:23,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:23,858 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:23,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005614611] [2020-11-12 03:32:23,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171791909] [2020-11-12 03:32:23,858 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:23,941 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-11-12 03:32:23,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:23,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 03:32:23,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:23,976 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:32:24,013 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:24,024 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:24,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:24,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-11-12 03:32:24,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292094796] [2020-11-12 03:32:24,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:32:24,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:24,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:32:24,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:32:24,025 INFO L87 Difference]: Start difference. First operand 2397 states and 4213 transitions. Second operand has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:25,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:25,763 INFO L93 Difference]: Finished difference Result 3706 states and 6635 transitions. [2020-11-12 03:32:25,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-12 03:32:25,764 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:32:25,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:25,768 INFO L225 Difference]: With dead ends: 3706 [2020-11-12 03:32:25,768 INFO L226 Difference]: Without dead ends: 3134 [2020-11-12 03:32:25,768 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 965 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=997, Invalid=2785, Unknown=0, NotChecked=0, Total=3782 [2020-11-12 03:32:25,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2020-11-12 03:32:25,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 2292. [2020-11-12 03:32:25,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2292 states, 2228 states have (on average 1.7975763016157988) internal successors, (4005), 2291 states have internal predecessors, (4005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:25,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 4005 transitions. [2020-11-12 03:32:25,793 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 4005 transitions. Word has length 106 [2020-11-12 03:32:25,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:25,793 INFO L481 AbstractCegarLoop]: Abstraction has 2292 states and 4005 transitions. [2020-11-12 03:32:25,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:25,793 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 4005 transitions. [2020-11-12 03:32:25,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 03:32:25,795 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:25,795 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:25,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:26,000 INFO L429 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:26,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:26,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1748798891, now seen corresponding path program 132 times [2020-11-12 03:32:26,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:26,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343943678] [2020-11-12 03:32:26,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:26,445 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:26,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343943678] [2020-11-12 03:32:26,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416875747] [2020-11-12 03:32:26,445 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:26,532 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-11-12 03:32:26,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:26,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 03:32:26,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:26,551 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:26,568 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:26,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:26,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-11-12 03:32:26,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4816080] [2020-11-12 03:32:26,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:32:26,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:26,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:32:26,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:32:26,569 INFO L87 Difference]: Start difference. First operand 2292 states and 4005 transitions. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:27,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:27,378 INFO L93 Difference]: Finished difference Result 3464 states and 6280 transitions. [2020-11-12 03:32:27,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-12 03:32:27,379 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 03:32:27,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:27,383 INFO L225 Difference]: With dead ends: 3464 [2020-11-12 03:32:27,383 INFO L226 Difference]: Without dead ends: 3194 [2020-11-12 03:32:27,384 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=479, Invalid=1413, Unknown=0, NotChecked=0, Total=1892 [2020-11-12 03:32:27,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-11-12 03:32:27,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2307. [2020-11-12 03:32:27,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2307 states, 2243 states have (on average 1.792242532322782) internal successors, (4020), 2306 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:27,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 4020 transitions. [2020-11-12 03:32:27,412 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 4020 transitions. Word has length 111 [2020-11-12 03:32:27,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:27,412 INFO L481 AbstractCegarLoop]: Abstraction has 2307 states and 4020 transitions. [2020-11-12 03:32:27,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:27,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 4020 transitions. [2020-11-12 03:32:27,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 03:32:27,414 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:27,414 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:27,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable142 [2020-11-12 03:32:27,615 INFO L429 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:27,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:27,616 INFO L82 PathProgramCache]: Analyzing trace with hash -748682859, now seen corresponding path program 133 times [2020-11-12 03:32:27,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:27,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245008893] [2020-11-12 03:32:27,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:28,096 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:28,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245008893] [2020-11-12 03:32:28,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308299744] [2020-11-12 03:32:28,096 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:28,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:28,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 03:32:28,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:28,210 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:32:28,228 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:28,262 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:28,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:28,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-11-12 03:32:28,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103989756] [2020-11-12 03:32:28,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:32:28,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:28,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:32:28,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:32:28,263 INFO L87 Difference]: Start difference. First operand 2307 states and 4020 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:29,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:29,170 INFO L93 Difference]: Finished difference Result 3824 states and 6975 transitions. [2020-11-12 03:32:29,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-12 03:32:29,171 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 03:32:29,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:29,174 INFO L225 Difference]: With dead ends: 3824 [2020-11-12 03:32:29,174 INFO L226 Difference]: Without dead ends: 3554 [2020-11-12 03:32:29,175 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=529, Invalid=1633, Unknown=0, NotChecked=0, Total=2162 [2020-11-12 03:32:29,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3554 states. [2020-11-12 03:32:29,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3554 to 2307. [2020-11-12 03:32:29,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2307 states, 2243 states have (on average 1.792242532322782) internal successors, (4020), 2306 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:29,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 4020 transitions. [2020-11-12 03:32:29,199 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 4020 transitions. Word has length 111 [2020-11-12 03:32:29,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:29,199 INFO L481 AbstractCegarLoop]: Abstraction has 2307 states and 4020 transitions. [2020-11-12 03:32:29,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:29,200 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 4020 transitions. [2020-11-12 03:32:29,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 03:32:29,201 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:29,201 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:29,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,139 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:29,402 INFO L429 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:29,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:29,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1876339917, now seen corresponding path program 134 times [2020-11-12 03:32:29,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:29,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036228651] [2020-11-12 03:32:29,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:29,810 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:29,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036228651] [2020-11-12 03:32:29,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086837629] [2020-11-12 03:32:29,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:29,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:32:29,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:29,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 03:32:29,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:29,914 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:29,937 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:29,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:29,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-11-12 03:32:29,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700217381] [2020-11-12 03:32:29,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:32:29,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:29,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:32:29,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:32:29,939 INFO L87 Difference]: Start difference. First operand 2307 states and 4020 transitions. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:30,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:30,823 INFO L93 Difference]: Finished difference Result 3814 states and 6930 transitions. [2020-11-12 03:32:30,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-12 03:32:30,824 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 03:32:30,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:30,828 INFO L225 Difference]: With dead ends: 3814 [2020-11-12 03:32:30,829 INFO L226 Difference]: Without dead ends: 3544 [2020-11-12 03:32:30,829 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=531, Invalid=1631, Unknown=0, NotChecked=0, Total=2162 [2020-11-12 03:32:30,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3544 states. [2020-11-12 03:32:30,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3544 to 2307. [2020-11-12 03:32:30,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2307 states, 2243 states have (on average 1.792242532322782) internal successors, (4020), 2306 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:30,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 4020 transitions. [2020-11-12 03:32:30,855 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 4020 transitions. Word has length 111 [2020-11-12 03:32:30,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:30,855 INFO L481 AbstractCegarLoop]: Abstraction has 2307 states and 4020 transitions. [2020-11-12 03:32:30,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:30,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 4020 transitions. [2020-11-12 03:32:30,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 03:32:30,857 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:30,857 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:31,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2020-11-12 03:32:31,058 INFO L429 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:31,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:31,059 INFO L82 PathProgramCache]: Analyzing trace with hash -468454797, now seen corresponding path program 135 times [2020-11-12 03:32:31,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:31,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450962758] [2020-11-12 03:32:31,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:31,460 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:31,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450962758] [2020-11-12 03:32:31,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070291007] [2020-11-12 03:32:31,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:31,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-12 03:32:31,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:31,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-12 03:32:31,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:31,622 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:31,638 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:31,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:31,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-11-12 03:32:31,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539513526] [2020-11-12 03:32:31,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:32:31,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:31,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:32:31,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:32:31,639 INFO L87 Difference]: Start difference. First operand 2307 states and 4020 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:32,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:32,729 INFO L93 Difference]: Finished difference Result 3789 states and 6855 transitions. [2020-11-12 03:32:32,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-12 03:32:32,730 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 03:32:32,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:32,734 INFO L225 Difference]: With dead ends: 3789 [2020-11-12 03:32:32,734 INFO L226 Difference]: Without dead ends: 3519 [2020-11-12 03:32:32,735 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=547, Invalid=1805, Unknown=0, NotChecked=0, Total=2352 [2020-11-12 03:32:32,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3519 states. [2020-11-12 03:32:32,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3519 to 2307. [2020-11-12 03:32:32,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2307 states, 2243 states have (on average 1.792242532322782) internal successors, (4020), 2306 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:32,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 4020 transitions. [2020-11-12 03:32:32,762 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 4020 transitions. Word has length 111 [2020-11-12 03:32:32,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:32,762 INFO L481 AbstractCegarLoop]: Abstraction has 2307 states and 4020 transitions. [2020-11-12 03:32:32,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:32,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 4020 transitions. [2020-11-12 03:32:32,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 03:32:32,764 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:32,764 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:32,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145,141 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:32,965 INFO L429 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:32,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:32,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1389686383, now seen corresponding path program 136 times [2020-11-12 03:32:32,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:32,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810054491] [2020-11-12 03:32:32,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:33,377 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:33,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810054491] [2020-11-12 03:32:33,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282816541] [2020-11-12 03:32:33,377 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:33,457 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:32:33,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:33,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:32:33,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:33,487 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:33,504 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:33,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:33,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-11-12 03:32:33,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882730540] [2020-11-12 03:32:33,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:32:33,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:33,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:32:33,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:32:33,506 INFO L87 Difference]: Start difference. First operand 2307 states and 4020 transitions. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:34,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:34,506 INFO L93 Difference]: Finished difference Result 3764 states and 6780 transitions. [2020-11-12 03:32:34,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-12 03:32:34,507 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 03:32:34,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:34,510 INFO L225 Difference]: With dead ends: 3764 [2020-11-12 03:32:34,511 INFO L226 Difference]: Without dead ends: 3494 [2020-11-12 03:32:34,511 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=569, Invalid=1783, Unknown=0, NotChecked=0, Total=2352 [2020-11-12 03:32:34,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3494 states. [2020-11-12 03:32:34,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3494 to 2307. [2020-11-12 03:32:34,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2307 states, 2243 states have (on average 1.792242532322782) internal successors, (4020), 2306 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:34,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 4020 transitions. [2020-11-12 03:32:34,538 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 4020 transitions. Word has length 111 [2020-11-12 03:32:34,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:34,539 INFO L481 AbstractCegarLoop]: Abstraction has 2307 states and 4020 transitions. [2020-11-12 03:32:34,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:34,539 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 4020 transitions. [2020-11-12 03:32:34,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 03:32:34,541 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:34,541 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:34,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2020-11-12 03:32:34,741 INFO L429 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:34,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:34,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1891090641, now seen corresponding path program 137 times [2020-11-12 03:32:34,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:34,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82125162] [2020-11-12 03:32:34,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:35,256 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:35,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82125162] [2020-11-12 03:32:35,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108980681] [2020-11-12 03:32:35,257 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:35,357 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-11-12 03:32:35,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:35,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 03:32:35,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:35,399 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:32:35,421 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:35,444 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:35,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:35,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-11-12 03:32:35,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149530778] [2020-11-12 03:32:35,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:32:35,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:35,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:32:35,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:32:35,446 INFO L87 Difference]: Start difference. First operand 2307 states and 4020 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:36,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:36,633 INFO L93 Difference]: Finished difference Result 3739 states and 6705 transitions. [2020-11-12 03:32:36,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-12 03:32:36,634 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 03:32:36,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:36,638 INFO L225 Difference]: With dead ends: 3739 [2020-11-12 03:32:36,638 INFO L226 Difference]: Without dead ends: 3469 [2020-11-12 03:32:36,638 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=593, Invalid=1957, Unknown=0, NotChecked=0, Total=2550 [2020-11-12 03:32:36,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3469 states. [2020-11-12 03:32:36,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3469 to 2307. [2020-11-12 03:32:36,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2307 states, 2243 states have (on average 1.792242532322782) internal successors, (4020), 2306 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:36,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 4020 transitions. [2020-11-12 03:32:36,666 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 4020 transitions. Word has length 111 [2020-11-12 03:32:36,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:36,666 INFO L481 AbstractCegarLoop]: Abstraction has 2307 states and 4020 transitions. [2020-11-12 03:32:36,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:36,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 4020 transitions. [2020-11-12 03:32:36,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 03:32:36,668 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:36,668 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:36,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2020-11-12 03:32:36,869 INFO L429 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:36,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:36,870 INFO L82 PathProgramCache]: Analyzing trace with hash 418876783, now seen corresponding path program 138 times [2020-11-12 03:32:36,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:36,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457216965] [2020-11-12 03:32:36,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:37,243 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:37,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457216965] [2020-11-12 03:32:37,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731232859] [2020-11-12 03:32:37,244 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:37,330 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-11-12 03:32:37,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:37,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 03:32:37,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:37,359 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:37,373 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:37,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:37,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-11-12 03:32:37,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866583969] [2020-11-12 03:32:37,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:32:37,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:37,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:32:37,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:32:37,374 INFO L87 Difference]: Start difference. First operand 2307 states and 4020 transitions. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:38,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:38,457 INFO L93 Difference]: Finished difference Result 3714 states and 6630 transitions. [2020-11-12 03:32:38,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 03:32:38,458 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 03:32:38,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:38,461 INFO L225 Difference]: With dead ends: 3714 [2020-11-12 03:32:38,461 INFO L226 Difference]: Without dead ends: 3444 [2020-11-12 03:32:38,462 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=623, Invalid=1927, Unknown=0, NotChecked=0, Total=2550 [2020-11-12 03:32:38,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3444 states. [2020-11-12 03:32:38,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3444 to 2307. [2020-11-12 03:32:38,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2307 states, 2243 states have (on average 1.792242532322782) internal successors, (4020), 2306 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:38,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 4020 transitions. [2020-11-12 03:32:38,488 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 4020 transitions. Word has length 111 [2020-11-12 03:32:38,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:38,488 INFO L481 AbstractCegarLoop]: Abstraction has 2307 states and 4020 transitions. [2020-11-12 03:32:38,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:38,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 4020 transitions. [2020-11-12 03:32:38,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 03:32:38,490 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:38,490 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:38,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148,144 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:38,691 INFO L429 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:38,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:38,692 INFO L82 PathProgramCache]: Analyzing trace with hash -59093841, now seen corresponding path program 139 times [2020-11-12 03:32:38,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:38,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957927655] [2020-11-12 03:32:38,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:39,082 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:39,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957927655] [2020-11-12 03:32:39,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799009326] [2020-11-12 03:32:39,082 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:39,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 03:32:39,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:39,207 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:32:39,228 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:39,248 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:39,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:39,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-11-12 03:32:39,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867582183] [2020-11-12 03:32:39,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:32:39,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:39,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:32:39,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:32:39,250 INFO L87 Difference]: Start difference. First operand 2307 states and 4020 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:40,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:40,525 INFO L93 Difference]: Finished difference Result 3689 states and 6555 transitions. [2020-11-12 03:32:40,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-12 03:32:40,527 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 03:32:40,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:40,531 INFO L225 Difference]: With dead ends: 3689 [2020-11-12 03:32:40,531 INFO L226 Difference]: Without dead ends: 3419 [2020-11-12 03:32:40,531 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=649, Invalid=2107, Unknown=0, NotChecked=0, Total=2756 [2020-11-12 03:32:40,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3419 states. [2020-11-12 03:32:40,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3419 to 2307. [2020-11-12 03:32:40,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2307 states, 2243 states have (on average 1.792242532322782) internal successors, (4020), 2306 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:40,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 4020 transitions. [2020-11-12 03:32:40,558 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 4020 transitions. Word has length 111 [2020-11-12 03:32:40,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:40,558 INFO L481 AbstractCegarLoop]: Abstraction has 2307 states and 4020 transitions. [2020-11-12 03:32:40,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:40,558 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 4020 transitions. [2020-11-12 03:32:40,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 03:32:40,560 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:40,560 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:40,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2020-11-12 03:32:40,761 INFO L429 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:40,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:40,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1087743693, now seen corresponding path program 140 times [2020-11-12 03:32:40,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:40,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415273626] [2020-11-12 03:32:40,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:40,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:41,140 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:41,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415273626] [2020-11-12 03:32:41,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634692196] [2020-11-12 03:32:41,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:41,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:32:41,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:41,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 03:32:41,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:41,246 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:41,261 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:41,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:41,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-11-12 03:32:41,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489859889] [2020-11-12 03:32:41,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:32:41,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:41,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:32:41,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:32:41,262 INFO L87 Difference]: Start difference. First operand 2307 states and 4020 transitions. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:42,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:42,430 INFO L93 Difference]: Finished difference Result 3664 states and 6480 transitions. [2020-11-12 03:32:42,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 03:32:42,431 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 03:32:42,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:42,435 INFO L225 Difference]: With dead ends: 3664 [2020-11-12 03:32:42,436 INFO L226 Difference]: Without dead ends: 3394 [2020-11-12 03:32:42,436 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=693, Invalid=2063, Unknown=0, NotChecked=0, Total=2756 [2020-11-12 03:32:42,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3394 states. [2020-11-12 03:32:42,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3394 to 2307. [2020-11-12 03:32:42,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2307 states, 2243 states have (on average 1.792242532322782) internal successors, (4020), 2306 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:42,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 4020 transitions. [2020-11-12 03:32:42,463 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 4020 transitions. Word has length 111 [2020-11-12 03:32:42,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:42,463 INFO L481 AbstractCegarLoop]: Abstraction has 2307 states and 4020 transitions. [2020-11-12 03:32:42,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:42,463 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 4020 transitions. [2020-11-12 03:32:42,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 03:32:42,466 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:42,466 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:42,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,146 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:42,680 INFO L429 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:42,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:42,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1918732787, now seen corresponding path program 141 times [2020-11-12 03:32:42,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:42,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648499354] [2020-11-12 03:32:42,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:43,068 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:43,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648499354] [2020-11-12 03:32:43,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092324838] [2020-11-12 03:32:43,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:43,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-11-12 03:32:43,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:43,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:32:43,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:43,212 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:43,226 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:43,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:43,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-11-12 03:32:43,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281992351] [2020-11-12 03:32:43,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:32:43,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:43,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:32:43,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:32:43,243 INFO L87 Difference]: Start difference. First operand 2307 states and 4020 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:44,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:44,630 INFO L93 Difference]: Finished difference Result 3639 states and 6405 transitions. [2020-11-12 03:32:44,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-12 03:32:44,630 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 03:32:44,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:44,634 INFO L225 Difference]: With dead ends: 3639 [2020-11-12 03:32:44,634 INFO L226 Difference]: Without dead ends: 3369 [2020-11-12 03:32:44,635 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=688, Invalid=2282, Unknown=0, NotChecked=0, Total=2970 [2020-11-12 03:32:44,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3369 states. [2020-11-12 03:32:44,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3369 to 2307. [2020-11-12 03:32:44,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2307 states, 2243 states have (on average 1.792242532322782) internal successors, (4020), 2306 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:44,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 4020 transitions. [2020-11-12 03:32:44,661 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 4020 transitions. Word has length 111 [2020-11-12 03:32:44,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:44,661 INFO L481 AbstractCegarLoop]: Abstraction has 2307 states and 4020 transitions. [2020-11-12 03:32:44,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:44,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 4020 transitions. [2020-11-12 03:32:44,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 03:32:44,663 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:44,663 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:44,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,147 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:44,864 INFO L429 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:44,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:44,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1394884011, now seen corresponding path program 142 times [2020-11-12 03:32:44,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:44,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011166413] [2020-11-12 03:32:44,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:45,221 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:45,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011166413] [2020-11-12 03:32:45,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191170119] [2020-11-12 03:32:45,221 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:45,301 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:32:45,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:45,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:32:45,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:45,327 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:45,340 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:45,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:45,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-11-12 03:32:45,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655236940] [2020-11-12 03:32:45,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:32:45,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:45,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:32:45,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:32:45,341 INFO L87 Difference]: Start difference. First operand 2307 states and 4020 transitions. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:46,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:46,599 INFO L93 Difference]: Finished difference Result 3614 states and 6330 transitions. [2020-11-12 03:32:46,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 03:32:46,600 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 03:32:46,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:46,604 INFO L225 Difference]: With dead ends: 3614 [2020-11-12 03:32:46,605 INFO L226 Difference]: Without dead ends: 3344 [2020-11-12 03:32:46,605 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=779, Invalid=2191, Unknown=0, NotChecked=0, Total=2970 [2020-11-12 03:32:46,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3344 states. [2020-11-12 03:32:46,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3344 to 2307. [2020-11-12 03:32:46,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2307 states, 2243 states have (on average 1.792242532322782) internal successors, (4020), 2306 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:46,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 4020 transitions. [2020-11-12 03:32:46,637 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 4020 transitions. Word has length 111 [2020-11-12 03:32:46,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:46,637 INFO L481 AbstractCegarLoop]: Abstraction has 2307 states and 4020 transitions. [2020-11-12 03:32:46,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:46,637 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 4020 transitions. [2020-11-12 03:32:46,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 03:32:46,639 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:46,639 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:46,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:46,840 INFO L429 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:46,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:46,841 INFO L82 PathProgramCache]: Analyzing trace with hash 730799339, now seen corresponding path program 143 times [2020-11-12 03:32:46,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:46,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662365924] [2020-11-12 03:32:46,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:46,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:47,230 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:47,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662365924] [2020-11-12 03:32:47,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697527133] [2020-11-12 03:32:47,231 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:47,315 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-11-12 03:32:47,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:47,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 03:32:47,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:47,350 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:32:47,371 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:47,383 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:47,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:47,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-11-12 03:32:47,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886884755] [2020-11-12 03:32:47,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:32:47,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:47,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:32:47,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:32:47,385 INFO L87 Difference]: Start difference. First operand 2307 states and 4020 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:48,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:48,949 INFO L93 Difference]: Finished difference Result 3589 states and 6255 transitions. [2020-11-12 03:32:48,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-11-12 03:32:48,950 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 03:32:48,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:48,954 INFO L225 Difference]: With dead ends: 3589 [2020-11-12 03:32:48,954 INFO L226 Difference]: Without dead ends: 3319 [2020-11-12 03:32:48,954 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=809, Invalid=2383, Unknown=0, NotChecked=0, Total=3192 [2020-11-12 03:32:48,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3319 states. [2020-11-12 03:32:48,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3319 to 2307. [2020-11-12 03:32:48,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2307 states, 2243 states have (on average 1.792242532322782) internal successors, (4020), 2306 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:48,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 4020 transitions. [2020-11-12 03:32:48,977 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 4020 transitions. Word has length 111 [2020-11-12 03:32:48,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:48,978 INFO L481 AbstractCegarLoop]: Abstraction has 2307 states and 4020 transitions. [2020-11-12 03:32:48,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:48,978 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 4020 transitions. [2020-11-12 03:32:48,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 03:32:48,979 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:48,979 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:49,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,149 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:49,180 INFO L429 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:49,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:49,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1029321225, now seen corresponding path program 144 times [2020-11-12 03:32:49,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:49,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079139488] [2020-11-12 03:32:49,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:49,534 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:49,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079139488] [2020-11-12 03:32:49,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722221878] [2020-11-12 03:32:49,535 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:49,621 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-11-12 03:32:49,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:49,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:32:49,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:49,650 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:49,663 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:49,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:49,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-11-12 03:32:49,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664708260] [2020-11-12 03:32:49,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:32:49,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:49,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:32:49,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:32:49,664 INFO L87 Difference]: Start difference. First operand 2307 states and 4020 transitions. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:50,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:50,990 INFO L93 Difference]: Finished difference Result 3564 states and 6180 transitions. [2020-11-12 03:32:50,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 03:32:50,991 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 03:32:50,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:50,995 INFO L225 Difference]: With dead ends: 3564 [2020-11-12 03:32:50,995 INFO L226 Difference]: Without dead ends: 3294 [2020-11-12 03:32:50,996 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=881, Invalid=2311, Unknown=0, NotChecked=0, Total=3192 [2020-11-12 03:32:50,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3294 states. [2020-11-12 03:32:51,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3294 to 2307. [2020-11-12 03:32:51,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2307 states, 2243 states have (on average 1.792242532322782) internal successors, (4020), 2306 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:51,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 4020 transitions. [2020-11-12 03:32:51,019 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 4020 transitions. Word has length 111 [2020-11-12 03:32:51,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:51,019 INFO L481 AbstractCegarLoop]: Abstraction has 2307 states and 4020 transitions. [2020-11-12 03:32:51,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:51,019 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 4020 transitions. [2020-11-12 03:32:51,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 03:32:51,021 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:51,021 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:51,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable154 [2020-11-12 03:32:51,222 INFO L429 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:51,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:51,222 INFO L82 PathProgramCache]: Analyzing trace with hash -591978167, now seen corresponding path program 145 times [2020-11-12 03:32:51,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:51,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428568362] [2020-11-12 03:32:51,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:51,598 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:51,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428568362] [2020-11-12 03:32:51,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413110865] [2020-11-12 03:32:51,599 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:51,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 03:32:51,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:51,722 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:32:51,745 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:51,756 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:51,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:51,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-11-12 03:32:51,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443271277] [2020-11-12 03:32:51,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:32:51,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:51,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:32:51,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:32:51,758 INFO L87 Difference]: Start difference. First operand 2307 states and 4020 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:53,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:53,430 INFO L93 Difference]: Finished difference Result 3604 states and 6222 transitions. [2020-11-12 03:32:53,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-11-12 03:32:53,431 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 03:32:53,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:53,435 INFO L225 Difference]: With dead ends: 3604 [2020-11-12 03:32:53,435 INFO L226 Difference]: Without dead ends: 3334 [2020-11-12 03:32:53,436 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=913, Invalid=2509, Unknown=0, NotChecked=0, Total=3422 [2020-11-12 03:32:53,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3334 states. [2020-11-12 03:32:53,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3334 to 2327. [2020-11-12 03:32:53,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2327 states, 2263 states have (on average 1.7962881131241715) internal successors, (4065), 2326 states have internal predecessors, (4065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:53,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2327 states to 2327 states and 4065 transitions. [2020-11-12 03:32:53,463 INFO L78 Accepts]: Start accepts. Automaton has 2327 states and 4065 transitions. Word has length 111 [2020-11-12 03:32:53,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:53,463 INFO L481 AbstractCegarLoop]: Abstraction has 2327 states and 4065 transitions. [2020-11-12 03:32:53,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:53,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2327 states and 4065 transitions. [2020-11-12 03:32:53,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 03:32:53,465 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:53,465 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:53,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2020-11-12 03:32:53,666 INFO L429 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:53,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:53,667 INFO L82 PathProgramCache]: Analyzing trace with hash 542111997, now seen corresponding path program 146 times [2020-11-12 03:32:53,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:53,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120455831] [2020-11-12 03:32:53,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:54,019 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:54,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120455831] [2020-11-12 03:32:54,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811949839] [2020-11-12 03:32:54,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:54,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:32:54,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:54,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:32:54,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:54,142 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:54,154 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:54,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:54,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-11-12 03:32:54,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753702501] [2020-11-12 03:32:54,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:32:54,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:54,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:32:54,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:32:54,156 INFO L87 Difference]: Start difference. First operand 2327 states and 4065 transitions. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:55,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:55,569 INFO L93 Difference]: Finished difference Result 4666 states and 7634 transitions. [2020-11-12 03:32:55,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 03:32:55,570 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 03:32:55,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:55,574 INFO L225 Difference]: With dead ends: 4666 [2020-11-12 03:32:55,574 INFO L226 Difference]: Without dead ends: 4381 [2020-11-12 03:32:55,575 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1000, Invalid=2422, Unknown=0, NotChecked=0, Total=3422 [2020-11-12 03:32:55,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4381 states. [2020-11-12 03:32:55,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4381 to 2412. [2020-11-12 03:32:55,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2348 states have (on average 1.815587734241908) internal successors, (4263), 2411 states have internal predecessors, (4263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:55,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 4263 transitions. [2020-11-12 03:32:55,608 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 4263 transitions. Word has length 111 [2020-11-12 03:32:55,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:55,608 INFO L481 AbstractCegarLoop]: Abstraction has 2412 states and 4263 transitions. [2020-11-12 03:32:55,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:55,608 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 4263 transitions. [2020-11-12 03:32:55,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 03:32:55,610 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:55,610 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:55,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2020-11-12 03:32:55,811 INFO L429 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:55,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:55,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1382089189, now seen corresponding path program 147 times [2020-11-12 03:32:55,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:55,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116109238] [2020-11-12 03:32:55,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:56,191 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:56,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116109238] [2020-11-12 03:32:56,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535576586] [2020-11-12 03:32:56,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:56,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-11-12 03:32:56,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:56,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:32:56,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:56,363 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:56,374 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:56,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:56,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 24 [2020-11-12 03:32:56,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850487892] [2020-11-12 03:32:56,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-12 03:32:56,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:56,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-12 03:32:56,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2020-11-12 03:32:56,376 INFO L87 Difference]: Start difference. First operand 2412 states and 4263 transitions. Second operand has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:58,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:58,252 INFO L93 Difference]: Finished difference Result 4046 states and 6987 transitions. [2020-11-12 03:32:58,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-12 03:32:58,252 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 03:32:58,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:58,256 INFO L225 Difference]: With dead ends: 4046 [2020-11-12 03:32:58,256 INFO L226 Difference]: Without dead ends: 3474 [2020-11-12 03:32:58,257 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1086 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1013, Invalid=3147, Unknown=0, NotChecked=0, Total=4160 [2020-11-12 03:32:58,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3474 states. [2020-11-12 03:32:58,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3474 to 1917. [2020-11-12 03:32:58,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1917 states, 1853 states have (on average 1.72369131138694) internal successors, (3194), 1916 states have internal predecessors, (3194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:58,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 3194 transitions. [2020-11-12 03:32:58,278 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 3194 transitions. Word has length 111 [2020-11-12 03:32:58,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:58,278 INFO L481 AbstractCegarLoop]: Abstraction has 1917 states and 3194 transitions. [2020-11-12 03:32:58,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:58,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 3194 transitions. [2020-11-12 03:32:58,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:32:58,279 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:58,280 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:58,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2020-11-12 03:32:58,480 INFO L429 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:58,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:58,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1035788687, now seen corresponding path program 148 times [2020-11-12 03:32:58,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:58,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117089863] [2020-11-12 03:32:58,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:58,987 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:58,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117089863] [2020-11-12 03:32:58,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313474244] [2020-11-12 03:32:58,988 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:59,072 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:32:59,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:59,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:32:59,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:59,127 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:59,165 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:59,187 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:59,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:59,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 27 [2020-11-12 03:32:59,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072306913] [2020-11-12 03:32:59,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:32:59,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:59,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:32:59,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=546, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:32:59,189 INFO L87 Difference]: Start difference. First operand 1917 states and 3194 transitions. Second operand has 27 states, 27 states have (on average 5.148148148148148) internal successors, (139), 27 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:00,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:00,178 INFO L93 Difference]: Finished difference Result 3125 states and 5338 transitions. [2020-11-12 03:33:00,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-12 03:33:00,179 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.148148148148148) internal successors, (139), 27 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 03:33:00,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:00,183 INFO L225 Difference]: With dead ends: 3125 [2020-11-12 03:33:00,183 INFO L226 Difference]: Without dead ends: 2791 [2020-11-12 03:33:00,183 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=680, Invalid=1870, Unknown=0, NotChecked=0, Total=2550 [2020-11-12 03:33:00,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2020-11-12 03:33:00,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 1992. [2020-11-12 03:33:00,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1992 states, 1928 states have (on average 1.7344398340248963) internal successors, (3344), 1991 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:00,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1992 states to 1992 states and 3344 transitions. [2020-11-12 03:33:00,206 INFO L78 Accepts]: Start accepts. Automaton has 1992 states and 3344 transitions. Word has length 116 [2020-11-12 03:33:00,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:00,206 INFO L481 AbstractCegarLoop]: Abstraction has 1992 states and 3344 transitions. [2020-11-12 03:33:00,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.148148148148148) internal successors, (139), 27 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:00,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1992 states and 3344 transitions. [2020-11-12 03:33:00,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:33:00,208 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:00,208 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:00,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 154 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2020-11-12 03:33:00,409 INFO L429 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:00,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:00,409 INFO L82 PathProgramCache]: Analyzing trace with hash -240438637, now seen corresponding path program 149 times [2020-11-12 03:33:00,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:00,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659450636] [2020-11-12 03:33:00,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:00,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:00,902 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:00,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659450636] [2020-11-12 03:33:00,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682940313] [2020-11-12 03:33:00,903 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:00,991 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2020-11-12 03:33:00,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:00,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:33:00,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:01,043 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:01,062 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:01,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:01,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-11-12 03:33:01,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425927653] [2020-11-12 03:33:01,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-12 03:33:01,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:01,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-12 03:33:01,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2020-11-12 03:33:01,064 INFO L87 Difference]: Start difference. First operand 1992 states and 3344 transitions. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:01,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:01,885 INFO L93 Difference]: Finished difference Result 3754 states and 6794 transitions. [2020-11-12 03:33:01,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-12 03:33:01,885 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 03:33:01,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:01,890 INFO L225 Difference]: With dead ends: 3754 [2020-11-12 03:33:01,890 INFO L226 Difference]: Without dead ends: 3484 [2020-11-12 03:33:01,890 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=543, Invalid=1437, Unknown=0, NotChecked=0, Total=1980 [2020-11-12 03:33:01,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3484 states. [2020-11-12 03:33:01,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3484 to 2087. [2020-11-12 03:33:01,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2087 states, 2023 states have (on average 1.7320810677212062) internal successors, (3504), 2086 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:01,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2087 states to 2087 states and 3504 transitions. [2020-11-12 03:33:01,929 INFO L78 Accepts]: Start accepts. Automaton has 2087 states and 3504 transitions. Word has length 116 [2020-11-12 03:33:01,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:01,929 INFO L481 AbstractCegarLoop]: Abstraction has 2087 states and 3504 transitions. [2020-11-12 03:33:01,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:01,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2087 states and 3504 transitions. [2020-11-12 03:33:01,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:33:01,931 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:01,931 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:02,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable159 [2020-11-12 03:33:02,141 INFO L429 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:02,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:02,141 INFO L82 PathProgramCache]: Analyzing trace with hash -511885293, now seen corresponding path program 150 times [2020-11-12 03:33:02,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:02,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823291181] [2020-11-12 03:33:02,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:02,662 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:02,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823291181] [2020-11-12 03:33:02,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937722339] [2020-11-12 03:33:02,663 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:02,750 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-11-12 03:33:02,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:02,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:33:02,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:02,785 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:33:02,838 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:02,856 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:02,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:02,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2020-11-12 03:33:02,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246130663] [2020-11-12 03:33:02,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:33:02,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:02,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:33:02,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:33:02,858 INFO L87 Difference]: Start difference. First operand 2087 states and 3504 transitions. Second operand has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:03,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:03,894 INFO L93 Difference]: Finished difference Result 3709 states and 6684 transitions. [2020-11-12 03:33:03,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-12 03:33:03,895 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 03:33:03,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:03,899 INFO L225 Difference]: With dead ends: 3709 [2020-11-12 03:33:03,899 INFO L226 Difference]: Without dead ends: 3439 [2020-11-12 03:33:03,899 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=608, Invalid=1744, Unknown=0, NotChecked=0, Total=2352 [2020-11-12 03:33:03,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3439 states. [2020-11-12 03:33:03,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3439 to 2137. [2020-11-12 03:33:03,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2137 states, 2073 states have (on average 1.728895320791124) internal successors, (3584), 2136 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:03,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 3584 transitions. [2020-11-12 03:33:03,926 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 3584 transitions. Word has length 116 [2020-11-12 03:33:03,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:03,927 INFO L481 AbstractCegarLoop]: Abstraction has 2137 states and 3584 transitions. [2020-11-12 03:33:03,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:03,927 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 3584 transitions. [2020-11-12 03:33:03,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:33:03,928 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:03,929 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:04,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:04,129 INFO L429 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:04,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:04,130 INFO L82 PathProgramCache]: Analyzing trace with hash 382968235, now seen corresponding path program 151 times [2020-11-12 03:33:04,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:04,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691173763] [2020-11-12 03:33:04,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:04,623 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:04,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691173763] [2020-11-12 03:33:04,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304894090] [2020-11-12 03:33:04,624 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:04,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:33:04,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:04,760 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:04,778 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:04,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:04,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-11-12 03:33:04,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932141304] [2020-11-12 03:33:04,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-12 03:33:04,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:04,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-12 03:33:04,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2020-11-12 03:33:04,779 INFO L87 Difference]: Start difference. First operand 2137 states and 3584 transitions. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:05,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:05,664 INFO L93 Difference]: Finished difference Result 3734 states and 6714 transitions. [2020-11-12 03:33:05,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-12 03:33:05,665 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 03:33:05,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:05,670 INFO L225 Difference]: With dead ends: 3734 [2020-11-12 03:33:05,670 INFO L226 Difference]: Without dead ends: 3464 [2020-11-12 03:33:05,670 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=549, Invalid=1613, Unknown=0, NotChecked=0, Total=2162 [2020-11-12 03:33:05,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3464 states. [2020-11-12 03:33:05,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3464 to 2187. [2020-11-12 03:33:05,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2187 states, 2123 states have (on average 1.7258596325953839) internal successors, (3664), 2186 states have internal predecessors, (3664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:05,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 3664 transitions. [2020-11-12 03:33:05,697 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 3664 transitions. Word has length 116 [2020-11-12 03:33:05,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:05,697 INFO L481 AbstractCegarLoop]: Abstraction has 2187 states and 3664 transitions. [2020-11-12 03:33:05,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:05,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 3664 transitions. [2020-11-12 03:33:05,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:33:05,699 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:05,699 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:05,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,157 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:05,900 INFO L429 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:05,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:05,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1383084267, now seen corresponding path program 152 times [2020-11-12 03:33:05,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:05,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503825482] [2020-11-12 03:33:05,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:05,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:06,395 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:06,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503825482] [2020-11-12 03:33:06,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732843185] [2020-11-12 03:33:06,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:06,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:33:06,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:06,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:33:06,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:06,512 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:33:06,566 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:06,584 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:06,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:06,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2020-11-12 03:33:06,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789626094] [2020-11-12 03:33:06,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:33:06,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:06,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:33:06,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:33:06,585 INFO L87 Difference]: Start difference. First operand 2187 states and 3664 transitions. Second operand has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:07,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:07,757 INFO L93 Difference]: Finished difference Result 3734 states and 6694 transitions. [2020-11-12 03:33:07,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-12 03:33:07,758 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 03:33:07,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:07,762 INFO L225 Difference]: With dead ends: 3734 [2020-11-12 03:33:07,762 INFO L226 Difference]: Without dead ends: 3464 [2020-11-12 03:33:07,763 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=622, Invalid=1928, Unknown=0, NotChecked=0, Total=2550 [2020-11-12 03:33:07,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3464 states. [2020-11-12 03:33:07,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3464 to 2212. [2020-11-12 03:33:07,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2212 states, 2148 states have (on average 1.7313780260707634) internal successors, (3719), 2211 states have internal predecessors, (3719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:07,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 3719 transitions. [2020-11-12 03:33:07,790 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 3719 transitions. Word has length 116 [2020-11-12 03:33:07,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:07,790 INFO L481 AbstractCegarLoop]: Abstraction has 2212 states and 3719 transitions. [2020-11-12 03:33:07,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:07,790 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 3719 transitions. [2020-11-12 03:33:07,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:33:07,792 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:07,792 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:07,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,158 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:07,993 INFO L429 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:07,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:07,993 INFO L82 PathProgramCache]: Analyzing trace with hash 255427209, now seen corresponding path program 153 times [2020-11-12 03:33:07,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:07,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362440828] [2020-11-12 03:33:07,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:08,454 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:08,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362440828] [2020-11-12 03:33:08,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368393448] [2020-11-12 03:33:08,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:08,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-12 03:33:08,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:08,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 37 conjunts are in the unsatisfiable core [2020-11-12 03:33:08,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:08,594 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:08,612 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:08,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:08,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-11-12 03:33:08,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420319640] [2020-11-12 03:33:08,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-12 03:33:08,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:08,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-12 03:33:08,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2020-11-12 03:33:08,613 INFO L87 Difference]: Start difference. First operand 2212 states and 3719 transitions. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:09,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:09,629 INFO L93 Difference]: Finished difference Result 3709 states and 6649 transitions. [2020-11-12 03:33:09,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-12 03:33:09,630 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 03:33:09,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:09,633 INFO L225 Difference]: With dead ends: 3709 [2020-11-12 03:33:09,634 INFO L226 Difference]: Without dead ends: 3439 [2020-11-12 03:33:09,634 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=571, Invalid=1781, Unknown=0, NotChecked=0, Total=2352 [2020-11-12 03:33:09,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3439 states. [2020-11-12 03:33:09,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3439 to 2237. [2020-11-12 03:33:09,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2237 states, 2173 states have (on average 1.7367694431661298) internal successors, (3774), 2236 states have internal predecessors, (3774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:09,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2237 states to 2237 states and 3774 transitions. [2020-11-12 03:33:09,659 INFO L78 Accepts]: Start accepts. Automaton has 2237 states and 3774 transitions. Word has length 116 [2020-11-12 03:33:09,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:09,659 INFO L481 AbstractCegarLoop]: Abstraction has 2237 states and 3774 transitions. [2020-11-12 03:33:09,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:09,659 INFO L276 IsEmpty]: Start isEmpty. Operand 2237 states and 3774 transitions. [2020-11-12 03:33:09,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:33:09,661 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:09,661 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:09,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,159 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:09,862 INFO L429 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:09,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:09,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1663312329, now seen corresponding path program 154 times [2020-11-12 03:33:09,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:09,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923053099] [2020-11-12 03:33:09,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:10,342 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:10,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923053099] [2020-11-12 03:33:10,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923163466] [2020-11-12 03:33:10,342 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:10,426 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:33:10,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:10,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:33:10,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:10,462 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:33:10,523 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:10,545 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:10,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:10,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2020-11-12 03:33:10,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758289835] [2020-11-12 03:33:10,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:33:10,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:10,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:33:10,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:33:10,547 INFO L87 Difference]: Start difference. First operand 2237 states and 3774 transitions. Second operand has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:11,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:11,835 INFO L93 Difference]: Finished difference Result 3684 states and 6604 transitions. [2020-11-12 03:33:11,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-12 03:33:11,835 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 03:33:11,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:11,839 INFO L225 Difference]: With dead ends: 3684 [2020-11-12 03:33:11,839 INFO L226 Difference]: Without dead ends: 3414 [2020-11-12 03:33:11,839 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=652, Invalid=2104, Unknown=0, NotChecked=0, Total=2756 [2020-11-12 03:33:11,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3414 states. [2020-11-12 03:33:11,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3414 to 2262. [2020-11-12 03:33:11,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2262 states, 2198 states have (on average 1.7420382165605095) internal successors, (3829), 2261 states have internal predecessors, (3829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:11,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 3829 transitions. [2020-11-12 03:33:11,868 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 3829 transitions. Word has length 116 [2020-11-12 03:33:11,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:11,868 INFO L481 AbstractCegarLoop]: Abstraction has 2262 states and 3829 transitions. [2020-11-12 03:33:11,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:11,868 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 3829 transitions. [2020-11-12 03:33:11,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:33:11,870 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:11,870 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:12,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,160 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:12,076 INFO L429 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:12,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:12,076 INFO L82 PathProgramCache]: Analyzing trace with hash 742080743, now seen corresponding path program 155 times [2020-11-12 03:33:12,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:12,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779481093] [2020-11-12 03:33:12,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:12,533 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:12,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779481093] [2020-11-12 03:33:12,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052572315] [2020-11-12 03:33:12,534 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:12,620 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-11-12 03:33:12,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:12,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:33:12,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:12,687 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:12,709 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:12,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:12,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-11-12 03:33:12,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381608334] [2020-11-12 03:33:12,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-12 03:33:12,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:12,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-12 03:33:12,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2020-11-12 03:33:12,710 INFO L87 Difference]: Start difference. First operand 2262 states and 3829 transitions. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:13,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:13,855 INFO L93 Difference]: Finished difference Result 3659 states and 6559 transitions. [2020-11-12 03:33:13,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-12 03:33:13,856 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 03:33:13,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:13,860 INFO L225 Difference]: With dead ends: 3659 [2020-11-12 03:33:13,860 INFO L226 Difference]: Without dead ends: 3389 [2020-11-12 03:33:13,861 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=609, Invalid=1941, Unknown=0, NotChecked=0, Total=2550 [2020-11-12 03:33:13,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3389 states. [2020-11-12 03:33:13,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3389 to 2287. [2020-11-12 03:33:13,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2287 states, 2223 states have (on average 1.7471884840305894) internal successors, (3884), 2286 states have internal predecessors, (3884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:13,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 3884 transitions. [2020-11-12 03:33:13,889 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 3884 transitions. Word has length 116 [2020-11-12 03:33:13,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:13,890 INFO L481 AbstractCegarLoop]: Abstraction has 2287 states and 3884 transitions. [2020-11-12 03:33:13,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:13,890 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 3884 transitions. [2020-11-12 03:33:13,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:33:13,891 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:13,892 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:14,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,161 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:14,092 INFO L429 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:14,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:14,093 INFO L82 PathProgramCache]: Analyzing trace with hash -272109529, now seen corresponding path program 156 times [2020-11-12 03:33:14,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:14,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138977232] [2020-11-12 03:33:14,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:14,554 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:14,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138977232] [2020-11-12 03:33:14,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228336427] [2020-11-12 03:33:14,554 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:14,644 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-11-12 03:33:14,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:14,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:33:14,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:14,698 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:33:14,749 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:14,765 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:14,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:14,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2020-11-12 03:33:14,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574301515] [2020-11-12 03:33:14,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:33:14,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:14,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:33:14,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:33:14,767 INFO L87 Difference]: Start difference. First operand 2287 states and 3884 transitions. Second operand has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:16,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:16,162 INFO L93 Difference]: Finished difference Result 3634 states and 6514 transitions. [2020-11-12 03:33:16,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-12 03:33:16,163 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 03:33:16,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:16,166 INFO L225 Difference]: With dead ends: 3634 [2020-11-12 03:33:16,167 INFO L226 Difference]: Without dead ends: 3364 [2020-11-12 03:33:16,167 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=698, Invalid=2272, Unknown=0, NotChecked=0, Total=2970 [2020-11-12 03:33:16,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3364 states. [2020-11-12 03:33:16,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3364 to 2312. [2020-11-12 03:33:16,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2312 states, 2248 states have (on average 1.7522241992882561) internal successors, (3939), 2311 states have internal predecessors, (3939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:16,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 3939 transitions. [2020-11-12 03:33:16,196 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 3939 transitions. Word has length 116 [2020-11-12 03:33:16,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:16,196 INFO L481 AbstractCegarLoop]: Abstraction has 2312 states and 3939 transitions. [2020-11-12 03:33:16,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:16,196 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 3939 transitions. [2020-11-12 03:33:16,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:33:16,198 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:16,198 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:16,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166,162 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:16,399 INFO L429 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:16,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:16,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1744323387, now seen corresponding path program 157 times [2020-11-12 03:33:16,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:16,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451625878] [2020-11-12 03:33:16,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:16,825 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:16,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451625878] [2020-11-12 03:33:16,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387380843] [2020-11-12 03:33:16,826 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:16,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:33:16,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:16,963 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:16,978 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:16,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:16,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-11-12 03:33:16,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141740933] [2020-11-12 03:33:16,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-12 03:33:16,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:16,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-12 03:33:16,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2020-11-12 03:33:16,980 INFO L87 Difference]: Start difference. First operand 2312 states and 3939 transitions. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:18,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:18,175 INFO L93 Difference]: Finished difference Result 3609 states and 6469 transitions. [2020-11-12 03:33:18,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 03:33:18,176 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 03:33:18,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:18,180 INFO L225 Difference]: With dead ends: 3609 [2020-11-12 03:33:18,180 INFO L226 Difference]: Without dead ends: 3339 [2020-11-12 03:33:18,180 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=663, Invalid=2093, Unknown=0, NotChecked=0, Total=2756 [2020-11-12 03:33:18,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2020-11-12 03:33:18,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 2337. [2020-11-12 03:33:18,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2337 states, 2273 states have (on average 1.7571491421029477) internal successors, (3994), 2336 states have internal predecessors, (3994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:18,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2337 states to 2337 states and 3994 transitions. [2020-11-12 03:33:18,208 INFO L78 Accepts]: Start accepts. Automaton has 2337 states and 3994 transitions. Word has length 116 [2020-11-12 03:33:18,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:18,208 INFO L481 AbstractCegarLoop]: Abstraction has 2337 states and 3994 transitions. [2020-11-12 03:33:18,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:18,208 INFO L276 IsEmpty]: Start isEmpty. Operand 2337 states and 3994 transitions. [2020-11-12 03:33:18,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:33:18,210 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:18,210 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:18,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2020-11-12 03:33:18,411 INFO L429 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:18,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:18,411 INFO L82 PathProgramCache]: Analyzing trace with hash 2072673285, now seen corresponding path program 158 times [2020-11-12 03:33:18,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:18,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304060733] [2020-11-12 03:33:18,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:18,909 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:18,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304060733] [2020-11-12 03:33:18,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459044433] [2020-11-12 03:33:18,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:18,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:33:18,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:19,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:33:19,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:19,042 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:33:19,102 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:19,126 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:19,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:19,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2020-11-12 03:33:19,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688882009] [2020-11-12 03:33:19,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:33:19,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:19,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:33:19,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:33:19,128 INFO L87 Difference]: Start difference. First operand 2337 states and 3994 transitions. Second operand has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:20,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:20,727 INFO L93 Difference]: Finished difference Result 3584 states and 6424 transitions. [2020-11-12 03:33:20,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-12 03:33:20,728 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 03:33:20,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:20,732 INFO L225 Difference]: With dead ends: 3584 [2020-11-12 03:33:20,732 INFO L226 Difference]: Without dead ends: 3314 [2020-11-12 03:33:20,733 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=760, Invalid=2432, Unknown=0, NotChecked=0, Total=3192 [2020-11-12 03:33:20,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3314 states. [2020-11-12 03:33:20,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3314 to 2362. [2020-11-12 03:33:20,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2362 states, 2298 states have (on average 1.7619669277632724) internal successors, (4049), 2361 states have internal predecessors, (4049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:20,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 4049 transitions. [2020-11-12 03:33:20,763 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 4049 transitions. Word has length 116 [2020-11-12 03:33:20,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:20,763 INFO L481 AbstractCegarLoop]: Abstraction has 2362 states and 4049 transitions. [2020-11-12 03:33:20,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:20,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 4049 transitions. [2020-11-12 03:33:20,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:33:20,765 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:20,765 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:20,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2020-11-12 03:33:20,966 INFO L429 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:20,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:20,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1075456477, now seen corresponding path program 159 times [2020-11-12 03:33:20,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:20,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042849938] [2020-11-12 03:33:20,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:20,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:21,385 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:21,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042849938] [2020-11-12 03:33:21,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182071577] [2020-11-12 03:33:21,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:21,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-12 03:33:21,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:21,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:33:21,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:21,531 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:21,546 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:21,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:21,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-11-12 03:33:21,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545723243] [2020-11-12 03:33:21,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-12 03:33:21,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:21,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-12 03:33:21,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2020-11-12 03:33:21,547 INFO L87 Difference]: Start difference. First operand 2362 states and 4049 transitions. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:22,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:22,839 INFO L93 Difference]: Finished difference Result 3559 states and 6379 transitions. [2020-11-12 03:33:22,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 03:33:22,840 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 03:33:22,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:22,845 INFO L225 Difference]: With dead ends: 3559 [2020-11-12 03:33:22,845 INFO L226 Difference]: Without dead ends: 3289 [2020-11-12 03:33:22,846 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=733, Invalid=2237, Unknown=0, NotChecked=0, Total=2970 [2020-11-12 03:33:22,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2020-11-12 03:33:22,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 2387. [2020-11-12 03:33:22,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2387 states, 2323 states have (on average 1.7666810159276798) internal successors, (4104), 2386 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:22,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2387 states to 2387 states and 4104 transitions. [2020-11-12 03:33:22,891 INFO L78 Accepts]: Start accepts. Automaton has 2387 states and 4104 transitions. Word has length 116 [2020-11-12 03:33:22,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:22,891 INFO L481 AbstractCegarLoop]: Abstraction has 2387 states and 4104 transitions. [2020-11-12 03:33:22,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:22,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2387 states and 4104 transitions. [2020-11-12 03:33:22,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:33:22,893 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:22,893 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:23,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2020-11-12 03:33:23,094 INFO L429 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:23,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:23,095 INFO L82 PathProgramCache]: Analyzing trace with hash 213034339, now seen corresponding path program 160 times [2020-11-12 03:33:23,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:23,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055046361] [2020-11-12 03:33:23,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:23,551 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:23,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055046361] [2020-11-12 03:33:23,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193755540] [2020-11-12 03:33:23,552 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:23,636 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:33:23,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:23,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:33:23,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:23,675 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:33:23,730 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:23,745 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:23,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:23,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2020-11-12 03:33:23,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039776550] [2020-11-12 03:33:23,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:33:23,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:23,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:33:23,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:33:23,746 INFO L87 Difference]: Start difference. First operand 2387 states and 4104 transitions. Second operand has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:25,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:25,440 INFO L93 Difference]: Finished difference Result 3534 states and 6334 transitions. [2020-11-12 03:33:25,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-11-12 03:33:25,441 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 03:33:25,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:25,445 INFO L225 Difference]: With dead ends: 3534 [2020-11-12 03:33:25,445 INFO L226 Difference]: Without dead ends: 3264 [2020-11-12 03:33:25,446 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=838, Invalid=2584, Unknown=0, NotChecked=0, Total=3422 [2020-11-12 03:33:25,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3264 states. [2020-11-12 03:33:25,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3264 to 2412. [2020-11-12 03:33:25,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2348 states have (on average 1.7712947189097104) internal successors, (4159), 2411 states have internal predecessors, (4159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:25,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 4159 transitions. [2020-11-12 03:33:25,471 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 4159 transitions. Word has length 116 [2020-11-12 03:33:25,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:25,472 INFO L481 AbstractCegarLoop]: Abstraction has 2412 states and 4159 transitions. [2020-11-12 03:33:25,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:25,472 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 4159 transitions. [2020-11-12 03:33:25,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:33:25,473 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:25,473 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:25,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170,166 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:25,674 INFO L429 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:25,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:25,675 INFO L82 PathProgramCache]: Analyzing trace with hash -768316159, now seen corresponding path program 161 times [2020-11-12 03:33:25,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:25,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970622040] [2020-11-12 03:33:25,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:26,110 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:26,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970622040] [2020-11-12 03:33:26,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296376824] [2020-11-12 03:33:26,110 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:26,197 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2020-11-12 03:33:26,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:26,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:33:26,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:26,256 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:26,270 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:26,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:26,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-11-12 03:33:26,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198878170] [2020-11-12 03:33:26,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-12 03:33:26,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:26,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-12 03:33:26,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2020-11-12 03:33:26,272 INFO L87 Difference]: Start difference. First operand 2412 states and 4159 transitions. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:27,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:27,640 INFO L93 Difference]: Finished difference Result 3509 states and 6289 transitions. [2020-11-12 03:33:27,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 03:33:27,641 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 03:33:27,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:27,645 INFO L225 Difference]: With dead ends: 3509 [2020-11-12 03:33:27,645 INFO L226 Difference]: Without dead ends: 3239 [2020-11-12 03:33:27,646 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=819, Invalid=2373, Unknown=0, NotChecked=0, Total=3192 [2020-11-12 03:33:27,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3239 states. [2020-11-12 03:33:27,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3239 to 2437. [2020-11-12 03:33:27,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2437 states, 2373 states have (on average 1.775811209439528) internal successors, (4214), 2436 states have internal predecessors, (4214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:27,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 4214 transitions. [2020-11-12 03:33:27,672 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 4214 transitions. Word has length 116 [2020-11-12 03:33:27,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:27,673 INFO L481 AbstractCegarLoop]: Abstraction has 2437 states and 4214 transitions. [2020-11-12 03:33:27,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:27,673 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 4214 transitions. [2020-11-12 03:33:27,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:33:27,674 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:27,674 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:27,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 167 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable171 [2020-11-12 03:33:27,875 INFO L429 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:27,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:27,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1432400831, now seen corresponding path program 162 times [2020-11-12 03:33:27,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:27,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671163825] [2020-11-12 03:33:27,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:28,436 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:28,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671163825] [2020-11-12 03:33:28,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050348835] [2020-11-12 03:33:28,437 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:28,540 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-11-12 03:33:28,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:28,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:33:28,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:28,652 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:28,665 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:28,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:28,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2020-11-12 03:33:28,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312659989] [2020-11-12 03:33:28,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:33:28,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:28,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:33:28,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:33:28,667 INFO L87 Difference]: Start difference. First operand 2437 states and 4214 transitions. Second operand has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:30,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:30,369 INFO L93 Difference]: Finished difference Result 3484 states and 6244 transitions. [2020-11-12 03:33:30,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-11-12 03:33:30,370 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 03:33:30,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:30,373 INFO L225 Difference]: With dead ends: 3484 [2020-11-12 03:33:30,373 INFO L226 Difference]: Without dead ends: 3214 [2020-11-12 03:33:30,374 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=799, Invalid=2623, Unknown=0, NotChecked=0, Total=3422 [2020-11-12 03:33:30,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3214 states. [2020-11-12 03:33:30,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3214 to 2462. [2020-11-12 03:33:30,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2462 states, 2398 states have (on average 1.78023352793995) internal successors, (4269), 2461 states have internal predecessors, (4269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:30,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2462 states to 2462 states and 4269 transitions. [2020-11-12 03:33:30,402 INFO L78 Accepts]: Start accepts. Automaton has 2462 states and 4269 transitions. Word has length 116 [2020-11-12 03:33:30,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:30,402 INFO L481 AbstractCegarLoop]: Abstraction has 2462 states and 4269 transitions. [2020-11-12 03:33:30,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:30,403 INFO L276 IsEmpty]: Start isEmpty. Operand 2462 states and 4269 transitions. [2020-11-12 03:33:30,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:33:30,404 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:30,405 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:30,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,168 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:30,605 INFO L429 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:30,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:30,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1133878945, now seen corresponding path program 163 times [2020-11-12 03:33:30,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:30,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83739751] [2020-11-12 03:33:30,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:31,012 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:31,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83739751] [2020-11-12 03:33:31,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437523219] [2020-11-12 03:33:31,012 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:31,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:33:31,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:31,175 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:31,188 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:31,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:31,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-11-12 03:33:31,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482800546] [2020-11-12 03:33:31,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-12 03:33:31,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:31,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-12 03:33:31,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2020-11-12 03:33:31,190 INFO L87 Difference]: Start difference. First operand 2462 states and 4269 transitions. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:32,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:32,677 INFO L93 Difference]: Finished difference Result 3459 states and 6199 transitions. [2020-11-12 03:33:32,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 03:33:32,679 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 03:33:32,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:32,683 INFO L225 Difference]: With dead ends: 3459 [2020-11-12 03:33:32,683 INFO L226 Difference]: Without dead ends: 3189 [2020-11-12 03:33:32,684 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 859 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=921, Invalid=2501, Unknown=0, NotChecked=0, Total=3422 [2020-11-12 03:33:32,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3189 states. [2020-11-12 03:33:32,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3189 to 2487. [2020-11-12 03:33:32,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2487 states, 2423 states have (on average 1.784564589352043) internal successors, (4324), 2486 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:32,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2487 states to 2487 states and 4324 transitions. [2020-11-12 03:33:32,712 INFO L78 Accepts]: Start accepts. Automaton has 2487 states and 4324 transitions. Word has length 116 [2020-11-12 03:33:32,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:32,712 INFO L481 AbstractCegarLoop]: Abstraction has 2487 states and 4324 transitions. [2020-11-12 03:33:32,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:32,712 INFO L276 IsEmpty]: Start isEmpty. Operand 2487 states and 4324 transitions. [2020-11-12 03:33:32,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:33:32,714 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:32,714 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:32,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,169 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:32,915 INFO L429 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:32,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:32,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1539788959, now seen corresponding path program 164 times [2020-11-12 03:33:32,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:32,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073322162] [2020-11-12 03:33:32,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:33,326 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:33,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073322162] [2020-11-12 03:33:33,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075245870] [2020-11-12 03:33:33,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:33,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:33:33,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:33,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:33:33,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:33,448 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:33:33,505 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:33,518 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:33,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:33,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2020-11-12 03:33:33,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712131775] [2020-11-12 03:33:33,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:33:33,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:33,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:33:33,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:33:33,519 INFO L87 Difference]: Start difference. First operand 2487 states and 4324 transitions. Second operand has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:35,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:35,643 INFO L93 Difference]: Finished difference Result 3863 states and 6960 transitions. [2020-11-12 03:33:35,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-11-12 03:33:35,644 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 03:33:35,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:35,648 INFO L225 Difference]: With dead ends: 3863 [2020-11-12 03:33:35,648 INFO L226 Difference]: Without dead ends: 3354 [2020-11-12 03:33:35,649 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1051 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1065, Invalid=3095, Unknown=0, NotChecked=0, Total=4160 [2020-11-12 03:33:35,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3354 states. [2020-11-12 03:33:35,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3354 to 2512. [2020-11-12 03:33:35,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2512 states, 2448 states have (on average 1.7912581699346406) internal successors, (4385), 2511 states have internal predecessors, (4385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:35,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2512 states to 2512 states and 4385 transitions. [2020-11-12 03:33:35,686 INFO L78 Accepts]: Start accepts. Automaton has 2512 states and 4385 transitions. Word has length 116 [2020-11-12 03:33:35,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:35,686 INFO L481 AbstractCegarLoop]: Abstraction has 2512 states and 4385 transitions. [2020-11-12 03:33:35,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:35,687 INFO L276 IsEmpty]: Start isEmpty. Operand 2512 states and 4385 transitions. [2020-11-12 03:33:35,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:33:35,689 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:35,689 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:35,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,170 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:35,903 INFO L429 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:35,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:35,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1621088173, now seen corresponding path program 165 times [2020-11-12 03:33:35,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:35,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616321118] [2020-11-12 03:33:35,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:36,437 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:36,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616321118] [2020-11-12 03:33:36,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145803595] [2020-11-12 03:33:36,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:36,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-12 03:33:36,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:36,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:33:36,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:36,602 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:36,620 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:36,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:36,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-11-12 03:33:36,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593931888] [2020-11-12 03:33:36,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-12 03:33:36,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:36,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-12 03:33:36,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2020-11-12 03:33:36,622 INFO L87 Difference]: Start difference. First operand 2512 states and 4385 transitions. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:38,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:38,241 INFO L93 Difference]: Finished difference Result 4541 states and 7669 transitions. [2020-11-12 03:33:38,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 03:33:38,241 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 03:33:38,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:38,246 INFO L225 Difference]: With dead ends: 4541 [2020-11-12 03:33:38,246 INFO L226 Difference]: Without dead ends: 4256 [2020-11-12 03:33:38,247 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 948 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1040, Invalid=2620, Unknown=0, NotChecked=0, Total=3660 [2020-11-12 03:33:38,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4256 states. [2020-11-12 03:33:38,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4256 to 2597. [2020-11-12 03:33:38,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2597 states, 2533 states have (on average 1.8093170153967628) internal successors, (4583), 2596 states have internal predecessors, (4583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:38,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2597 states to 2597 states and 4583 transitions. [2020-11-12 03:33:38,281 INFO L78 Accepts]: Start accepts. Automaton has 2597 states and 4583 transitions. Word has length 116 [2020-11-12 03:33:38,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:38,282 INFO L481 AbstractCegarLoop]: Abstraction has 2597 states and 4583 transitions. [2020-11-12 03:33:38,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:38,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2597 states and 4583 transitions. [2020-11-12 03:33:38,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:33:38,284 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:38,284 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:38,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable175 [2020-11-12 03:33:38,485 INFO L429 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:38,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:38,485 INFO L82 PathProgramCache]: Analyzing trace with hash -781110981, now seen corresponding path program 166 times [2020-11-12 03:33:38,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:38,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757214529] [2020-11-12 03:33:38,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:38,906 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:38,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757214529] [2020-11-12 03:33:38,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561545428] [2020-11-12 03:33:38,907 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:38,989 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:33:38,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:38,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:33:38,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:39,033 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:33:39,061 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:39,075 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:39,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:39,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-11-12 03:33:39,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043883418] [2020-11-12 03:33:39,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-12 03:33:39,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:39,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-12 03:33:39,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2020-11-12 03:33:39,076 INFO L87 Difference]: Start difference. First operand 2597 states and 4583 transitions. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:41,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:41,081 INFO L93 Difference]: Finished difference Result 3540 states and 6289 transitions. [2020-11-12 03:33:41,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-12 03:33:41,082 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 03:33:41,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:41,086 INFO L225 Difference]: With dead ends: 3540 [2020-11-12 03:33:41,086 INFO L226 Difference]: Without dead ends: 3144 [2020-11-12 03:33:41,087 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1146, Invalid=2886, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 03:33:41,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3144 states. [2020-11-12 03:33:41,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3144 to 2112. [2020-11-12 03:33:41,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 2048 states have (on average 1.7255859375) internal successors, (3534), 2111 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:41,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 3534 transitions. [2020-11-12 03:33:41,111 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 3534 transitions. Word has length 116 [2020-11-12 03:33:41,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:41,111 INFO L481 AbstractCegarLoop]: Abstraction has 2112 states and 3534 transitions. [2020-11-12 03:33:41,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:41,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 3534 transitions. [2020-11-12 03:33:41,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:33:41,113 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:41,113 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:41,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,172 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:41,314 INFO L429 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:41,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:41,315 INFO L82 PathProgramCache]: Analyzing trace with hash -707361594, now seen corresponding path program 167 times [2020-11-12 03:33:41,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:41,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164101623] [2020-11-12 03:33:41,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:41,876 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:41,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164101623] [2020-11-12 03:33:41,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507309666] [2020-11-12 03:33:41,877 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:41,965 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-11-12 03:33:41,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:41,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:33:41,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:42,028 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:42,059 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:42,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:42,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-11-12 03:33:42,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24960729] [2020-11-12 03:33:42,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:33:42,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:42,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:33:42,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:33:42,061 INFO L87 Difference]: Start difference. First operand 2112 states and 3534 transitions. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:43,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:43,085 INFO L93 Difference]: Finished difference Result 3409 states and 6064 transitions. [2020-11-12 03:33:43,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-12 03:33:43,086 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:33:43,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:43,090 INFO L225 Difference]: With dead ends: 3409 [2020-11-12 03:33:43,090 INFO L226 Difference]: Without dead ends: 3139 [2020-11-12 03:33:43,090 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=610, Invalid=1742, Unknown=0, NotChecked=0, Total=2352 [2020-11-12 03:33:43,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2020-11-12 03:33:43,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 2152. [2020-11-12 03:33:43,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2152 states, 2088 states have (on average 1.7260536398467432) internal successors, (3604), 2151 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:43,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2152 states to 2152 states and 3604 transitions. [2020-11-12 03:33:43,115 INFO L78 Accepts]: Start accepts. Automaton has 2152 states and 3604 transitions. Word has length 121 [2020-11-12 03:33:43,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:43,115 INFO L481 AbstractCegarLoop]: Abstraction has 2152 states and 3604 transitions. [2020-11-12 03:33:43,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:43,115 INFO L276 IsEmpty]: Start isEmpty. Operand 2152 states and 3604 transitions. [2020-11-12 03:33:43,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:33:43,117 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:43,117 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:43,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 173 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable177 [2020-11-12 03:33:43,318 INFO L429 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:43,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:43,318 INFO L82 PathProgramCache]: Analyzing trace with hash 930677766, now seen corresponding path program 168 times [2020-11-12 03:33:43,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:43,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447584449] [2020-11-12 03:33:43,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:43,884 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:43,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447584449] [2020-11-12 03:33:43,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235286252] [2020-11-12 03:33:43,884 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:43,979 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-11-12 03:33:43,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:43,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:33:43,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:44,023 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:33:44,087 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:44,109 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:44,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:44,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-11-12 03:33:44,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615309725] [2020-11-12 03:33:44,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:33:44,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:44,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:33:44,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:33:44,111 INFO L87 Difference]: Start difference. First operand 2152 states and 3604 transitions. Second operand has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:45,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:45,248 INFO L93 Difference]: Finished difference Result 3844 states and 6914 transitions. [2020-11-12 03:33:45,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-12 03:33:45,250 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:33:45,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:45,254 INFO L225 Difference]: With dead ends: 3844 [2020-11-12 03:33:45,255 INFO L226 Difference]: Without dead ends: 3574 [2020-11-12 03:33:45,255 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=665, Invalid=1987, Unknown=0, NotChecked=0, Total=2652 [2020-11-12 03:33:45,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3574 states. [2020-11-12 03:33:45,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3574 to 2177. [2020-11-12 03:33:45,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2177 states, 2113 states have (on average 1.7316611452910553) internal successors, (3659), 2176 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:45,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2177 states to 2177 states and 3659 transitions. [2020-11-12 03:33:45,297 INFO L78 Accepts]: Start accepts. Automaton has 2177 states and 3659 transitions. Word has length 121 [2020-11-12 03:33:45,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:45,297 INFO L481 AbstractCegarLoop]: Abstraction has 2177 states and 3659 transitions. [2020-11-12 03:33:45,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:45,297 INFO L276 IsEmpty]: Start isEmpty. Operand 2177 states and 3659 transitions. [2020-11-12 03:33:45,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:33:45,299 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:45,299 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:45,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 174 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable178 [2020-11-12 03:33:45,500 INFO L429 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:45,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:45,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1900582876, now seen corresponding path program 169 times [2020-11-12 03:33:45,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:45,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951362178] [2020-11-12 03:33:45,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:46,028 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:46,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951362178] [2020-11-12 03:33:46,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666238701] [2020-11-12 03:33:46,028 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:46,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:33:46,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:46,167 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:46,187 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:46,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:46,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-11-12 03:33:46,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387951794] [2020-11-12 03:33:46,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:33:46,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:46,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:33:46,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:33:46,188 INFO L87 Difference]: Start difference. First operand 2177 states and 3659 transitions. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:47,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:47,261 INFO L93 Difference]: Finished difference Result 3859 states and 6924 transitions. [2020-11-12 03:33:47,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-12 03:33:47,262 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:33:47,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:47,267 INFO L225 Difference]: With dead ends: 3859 [2020-11-12 03:33:47,267 INFO L226 Difference]: Without dead ends: 3589 [2020-11-12 03:33:47,268 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=663, Invalid=1989, Unknown=0, NotChecked=0, Total=2652 [2020-11-12 03:33:47,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-11-12 03:33:47,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 2202. [2020-11-12 03:33:47,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2202 states, 2138 states have (on average 1.737137511693171) internal successors, (3714), 2201 states have internal predecessors, (3714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:47,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2202 states to 2202 states and 3714 transitions. [2020-11-12 03:33:47,295 INFO L78 Accepts]: Start accepts. Automaton has 2202 states and 3714 transitions. Word has length 121 [2020-11-12 03:33:47,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:47,296 INFO L481 AbstractCegarLoop]: Abstraction has 2202 states and 3714 transitions. [2020-11-12 03:33:47,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:47,296 INFO L276 IsEmpty]: Start isEmpty. Operand 2202 states and 3714 transitions. [2020-11-12 03:33:47,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:33:47,297 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:47,298 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:47,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2020-11-12 03:33:47,498 INFO L429 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:47,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:47,499 INFO L82 PathProgramCache]: Analyzing trace with hash -900466844, now seen corresponding path program 170 times [2020-11-12 03:33:47,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:47,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253915369] [2020-11-12 03:33:47,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:47,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:48,067 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:48,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253915369] [2020-11-12 03:33:48,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46861238] [2020-11-12 03:33:48,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:48,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:33:48,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:48,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:33:48,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:48,189 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:33:48,247 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:48,266 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:48,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:48,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-11-12 03:33:48,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329073853] [2020-11-12 03:33:48,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:33:48,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:48,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:33:48,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:33:48,268 INFO L87 Difference]: Start difference. First operand 2202 states and 3714 transitions. Second operand has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:49,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:49,551 INFO L93 Difference]: Finished difference Result 3859 states and 6904 transitions. [2020-11-12 03:33:49,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-12 03:33:49,552 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:33:49,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:49,556 INFO L225 Difference]: With dead ends: 3859 [2020-11-12 03:33:49,556 INFO L226 Difference]: Without dead ends: 3589 [2020-11-12 03:33:49,556 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=686, Invalid=2176, Unknown=0, NotChecked=0, Total=2862 [2020-11-12 03:33:49,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-11-12 03:33:49,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 2227. [2020-11-12 03:33:49,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2227 states, 2163 states have (on average 1.7424872861766065) internal successors, (3769), 2226 states have internal predecessors, (3769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:49,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2227 states to 2227 states and 3769 transitions. [2020-11-12 03:33:49,584 INFO L78 Accepts]: Start accepts. Automaton has 2227 states and 3769 transitions. Word has length 121 [2020-11-12 03:33:49,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:49,584 INFO L481 AbstractCegarLoop]: Abstraction has 2227 states and 3769 transitions. [2020-11-12 03:33:49,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:49,584 INFO L276 IsEmpty]: Start isEmpty. Operand 2227 states and 3769 transitions. [2020-11-12 03:33:49,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:33:49,586 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:49,586 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:49,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable180 [2020-11-12 03:33:49,787 INFO L429 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:49,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:49,788 INFO L82 PathProgramCache]: Analyzing trace with hash -2028123902, now seen corresponding path program 171 times [2020-11-12 03:33:49,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:49,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148516954] [2020-11-12 03:33:49,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:50,293 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:50,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148516954] [2020-11-12 03:33:50,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953057071] [2020-11-12 03:33:50,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:50,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-11-12 03:33:50,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:50,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 38 conjunts are in the unsatisfiable core [2020-11-12 03:33:50,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:50,461 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:50,479 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:50,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:50,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-11-12 03:33:50,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194140891] [2020-11-12 03:33:50,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:33:50,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:50,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:33:50,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:33:50,480 INFO L87 Difference]: Start difference. First operand 2227 states and 3769 transitions. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:51,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:51,632 INFO L93 Difference]: Finished difference Result 3859 states and 6884 transitions. [2020-11-12 03:33:51,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 03:33:51,633 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:33:51,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:51,638 INFO L225 Difference]: With dead ends: 3859 [2020-11-12 03:33:51,638 INFO L226 Difference]: Without dead ends: 3589 [2020-11-12 03:33:51,638 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=698, Invalid=2164, Unknown=0, NotChecked=0, Total=2862 [2020-11-12 03:33:51,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-11-12 03:33:51,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 2252. [2020-11-12 03:33:51,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2252 states, 2188 states have (on average 1.7477148080438756) internal successors, (3824), 2251 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:51,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 3824 transitions. [2020-11-12 03:33:51,666 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 3824 transitions. Word has length 121 [2020-11-12 03:33:51,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:51,666 INFO L481 AbstractCegarLoop]: Abstraction has 2252 states and 3824 transitions. [2020-11-12 03:33:51,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:51,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 3824 transitions. [2020-11-12 03:33:51,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:33:51,668 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:51,668 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:51,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,177 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:51,869 INFO L429 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:51,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:51,869 INFO L82 PathProgramCache]: Analyzing trace with hash -620238782, now seen corresponding path program 172 times [2020-11-12 03:33:51,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:51,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220770201] [2020-11-12 03:33:51,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:51,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:52,405 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:52,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220770201] [2020-11-12 03:33:52,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946323246] [2020-11-12 03:33:52,406 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:52,490 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:33:52,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:52,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:33:52,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:52,530 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:33:52,589 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:52,607 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:52,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:52,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-11-12 03:33:52,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333438861] [2020-11-12 03:33:52,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:33:52,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:52,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:33:52,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:33:52,608 INFO L87 Difference]: Start difference. First operand 2252 states and 3824 transitions. Second operand has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:54,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:54,030 INFO L93 Difference]: Finished difference Result 3859 states and 6864 transitions. [2020-11-12 03:33:54,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-12 03:33:54,031 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:33:54,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:54,035 INFO L225 Difference]: With dead ends: 3859 [2020-11-12 03:33:54,036 INFO L226 Difference]: Without dead ends: 3589 [2020-11-12 03:33:54,036 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=723, Invalid=2357, Unknown=0, NotChecked=0, Total=3080 [2020-11-12 03:33:54,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-11-12 03:33:54,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 2277. [2020-11-12 03:33:54,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2277 states, 2213 states have (on average 1.7528242205151379) internal successors, (3879), 2276 states have internal predecessors, (3879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:54,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 3879 transitions. [2020-11-12 03:33:54,064 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 3879 transitions. Word has length 121 [2020-11-12 03:33:54,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:54,064 INFO L481 AbstractCegarLoop]: Abstraction has 2277 states and 3879 transitions. [2020-11-12 03:33:54,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:54,064 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 3879 transitions. [2020-11-12 03:33:54,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:33:54,066 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:54,066 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:54,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 178 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable182 [2020-11-12 03:33:54,267 INFO L429 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:54,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:54,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1541470368, now seen corresponding path program 173 times [2020-11-12 03:33:54,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:54,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759598703] [2020-11-12 03:33:54,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:54,768 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:54,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759598703] [2020-11-12 03:33:54,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361681475] [2020-11-12 03:33:54,768 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:54,855 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2020-11-12 03:33:54,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:54,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:33:54,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:54,915 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:54,933 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:54,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:54,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-11-12 03:33:54,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136326908] [2020-11-12 03:33:54,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:33:54,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:54,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:33:54,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:33:54,935 INFO L87 Difference]: Start difference. First operand 2277 states and 3879 transitions. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:56,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:56,213 INFO L93 Difference]: Finished difference Result 3859 states and 6844 transitions. [2020-11-12 03:33:56,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 03:33:56,214 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:33:56,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:56,218 INFO L225 Difference]: With dead ends: 3859 [2020-11-12 03:33:56,218 INFO L226 Difference]: Without dead ends: 3589 [2020-11-12 03:33:56,219 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=749, Invalid=2331, Unknown=0, NotChecked=0, Total=3080 [2020-11-12 03:33:56,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-11-12 03:33:56,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 2302. [2020-11-12 03:33:56,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2302 states, 2238 states have (on average 1.7578194816800714) internal successors, (3934), 2301 states have internal predecessors, (3934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:56,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 3934 transitions. [2020-11-12 03:33:56,247 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 3934 transitions. Word has length 121 [2020-11-12 03:33:56,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:56,247 INFO L481 AbstractCegarLoop]: Abstraction has 2302 states and 3934 transitions. [2020-11-12 03:33:56,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:56,247 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 3934 transitions. [2020-11-12 03:33:56,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:33:56,249 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:56,249 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:56,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,179 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:56,450 INFO L429 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:56,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:56,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1739306656, now seen corresponding path program 174 times [2020-11-12 03:33:56,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:56,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397149276] [2020-11-12 03:33:56,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:56,965 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:56,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397149276] [2020-11-12 03:33:56,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64435018] [2020-11-12 03:33:56,966 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:57,057 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-11-12 03:33:57,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:57,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:33:57,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:57,099 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:33:57,158 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:57,176 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:57,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:57,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-11-12 03:33:57,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302473251] [2020-11-12 03:33:57,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:33:57,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:57,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:33:57,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:33:57,178 INFO L87 Difference]: Start difference. First operand 2302 states and 3934 transitions. Second operand has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:58,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:58,762 INFO L93 Difference]: Finished difference Result 3859 states and 6824 transitions. [2020-11-12 03:33:58,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-12 03:33:58,763 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:33:58,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:58,767 INFO L225 Difference]: With dead ends: 3859 [2020-11-12 03:33:58,767 INFO L226 Difference]: Without dead ends: 3589 [2020-11-12 03:33:58,767 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=776, Invalid=2530, Unknown=0, NotChecked=0, Total=3306 [2020-11-12 03:33:58,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-11-12 03:33:58,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 2327. [2020-11-12 03:33:58,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2327 states, 2263 states have (on average 1.762704374723818) internal successors, (3989), 2326 states have internal predecessors, (3989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:58,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2327 states to 2327 states and 3989 transitions. [2020-11-12 03:33:58,796 INFO L78 Accepts]: Start accepts. Automaton has 2327 states and 3989 transitions. Word has length 121 [2020-11-12 03:33:58,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:58,796 INFO L481 AbstractCegarLoop]: Abstraction has 2327 states and 3989 transitions. [2020-11-12 03:33:58,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:58,796 INFO L276 IsEmpty]: Start isEmpty. Operand 2327 states and 3989 transitions. [2020-11-12 03:33:58,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:33:58,798 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:58,798 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:59,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,180 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:59,002 INFO L429 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:59,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:59,002 INFO L82 PathProgramCache]: Analyzing trace with hash 267092798, now seen corresponding path program 175 times [2020-11-12 03:33:59,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:59,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158212478] [2020-11-12 03:33:59,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:59,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:59,481 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:59,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158212478] [2020-11-12 03:33:59,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889152703] [2020-11-12 03:33:59,482 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:59,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:59,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:33:59,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:59,626 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:59,643 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:59,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:59,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-11-12 03:33:59,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686750893] [2020-11-12 03:33:59,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:33:59,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:59,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:33:59,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:33:59,645 INFO L87 Difference]: Start difference. First operand 2327 states and 3989 transitions. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:01,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:01,007 INFO L93 Difference]: Finished difference Result 3859 states and 6804 transitions. [2020-11-12 03:34:01,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 03:34:01,008 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:34:01,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:01,012 INFO L225 Difference]: With dead ends: 3859 [2020-11-12 03:34:01,013 INFO L226 Difference]: Without dead ends: 3589 [2020-11-12 03:34:01,013 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=816, Invalid=2490, Unknown=0, NotChecked=0, Total=3306 [2020-11-12 03:34:01,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-11-12 03:34:01,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 2352. [2020-11-12 03:34:01,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2352 states, 2288 states have (on average 1.7674825174825175) internal successors, (4044), 2351 states have internal predecessors, (4044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:01,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 4044 transitions. [2020-11-12 03:34:01,043 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 4044 transitions. Word has length 121 [2020-11-12 03:34:01,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:01,043 INFO L481 AbstractCegarLoop]: Abstraction has 2352 states and 4044 transitions. [2020-11-12 03:34:01,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:01,043 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 4044 transitions. [2020-11-12 03:34:01,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:34:01,045 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:01,045 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:01,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,181 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:01,246 INFO L429 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:01,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:01,246 INFO L82 PathProgramCache]: Analyzing trace with hash -210877826, now seen corresponding path program 176 times [2020-11-12 03:34:01,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:01,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609003446] [2020-11-12 03:34:01,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:01,772 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:01,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609003446] [2020-11-12 03:34:01,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63327781] [2020-11-12 03:34:01,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:01,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:34:01,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:01,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:34:01,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:01,897 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:34:01,960 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:01,977 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:01,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:01,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-11-12 03:34:01,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699742867] [2020-11-12 03:34:01,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:34:01,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:01,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:34:01,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:34:01,978 INFO L87 Difference]: Start difference. First operand 2352 states and 4044 transitions. Second operand has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:03,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:03,703 INFO L93 Difference]: Finished difference Result 3859 states and 6784 transitions. [2020-11-12 03:34:03,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-11-12 03:34:03,703 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:34:03,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:03,708 INFO L225 Difference]: With dead ends: 3859 [2020-11-12 03:34:03,708 INFO L226 Difference]: Without dead ends: 3589 [2020-11-12 03:34:03,708 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=845, Invalid=2695, Unknown=0, NotChecked=0, Total=3540 [2020-11-12 03:34:03,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-11-12 03:34:03,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 2377. [2020-11-12 03:34:03,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2377 states, 2313 states have (on average 1.7721573713791612) internal successors, (4099), 2376 states have internal predecessors, (4099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:03,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2377 states to 2377 states and 4099 transitions. [2020-11-12 03:34:03,734 INFO L78 Accepts]: Start accepts. Automaton has 2377 states and 4099 transitions. Word has length 121 [2020-11-12 03:34:03,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:03,734 INFO L481 AbstractCegarLoop]: Abstraction has 2377 states and 4099 transitions. [2020-11-12 03:34:03,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:03,734 INFO L276 IsEmpty]: Start isEmpty. Operand 2377 states and 4099 transitions. [2020-11-12 03:34:03,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:34:03,736 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:03,736 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:03,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,182 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:03,937 INFO L429 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:03,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:03,938 INFO L82 PathProgramCache]: Analyzing trace with hash 935959708, now seen corresponding path program 177 times [2020-11-12 03:34:03,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:03,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341893022] [2020-11-12 03:34:03,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:04,421 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:04,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341893022] [2020-11-12 03:34:04,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96080236] [2020-11-12 03:34:04,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:04,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-12 03:34:04,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:04,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-12 03:34:04,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:04,574 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:04,591 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:04,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:04,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-11-12 03:34:04,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24019513] [2020-11-12 03:34:04,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:34:04,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:04,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:34:04,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:34:04,593 INFO L87 Difference]: Start difference. First operand 2377 states and 4099 transitions. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:06,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:06,082 INFO L93 Difference]: Finished difference Result 3859 states and 6764 transitions. [2020-11-12 03:34:06,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 03:34:06,084 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:34:06,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:06,088 INFO L225 Difference]: With dead ends: 3859 [2020-11-12 03:34:06,088 INFO L226 Difference]: Without dead ends: 3589 [2020-11-12 03:34:06,089 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=899, Invalid=2641, Unknown=0, NotChecked=0, Total=3540 [2020-11-12 03:34:06,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-11-12 03:34:06,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 2402. [2020-11-12 03:34:06,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2402 states, 2338 states have (on average 1.776732249786142) internal successors, (4154), 2401 states have internal predecessors, (4154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:06,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2402 states to 2402 states and 4154 transitions. [2020-11-12 03:34:06,118 INFO L78 Accepts]: Start accepts. Automaton has 2402 states and 4154 transitions. Word has length 121 [2020-11-12 03:34:06,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:06,118 INFO L481 AbstractCegarLoop]: Abstraction has 2402 states and 4154 transitions. [2020-11-12 03:34:06,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:06,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2402 states and 4154 transitions. [2020-11-12 03:34:06,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:34:06,120 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:06,120 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:06,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 183 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable187 [2020-11-12 03:34:06,321 INFO L429 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:06,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:06,322 INFO L82 PathProgramCache]: Analyzing trace with hash -2070516772, now seen corresponding path program 178 times [2020-11-12 03:34:06,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:06,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25289661] [2020-11-12 03:34:06,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:06,799 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:06,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25289661] [2020-11-12 03:34:06,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899651316] [2020-11-12 03:34:06,799 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:06,904 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:34:06,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:06,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:34:06,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:06,950 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:34:07,013 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:07,028 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:07,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:07,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-11-12 03:34:07,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635490759] [2020-11-12 03:34:07,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:34:07,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:07,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:34:07,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:34:07,030 INFO L87 Difference]: Start difference. First operand 2402 states and 4154 transitions. Second operand has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:08,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:08,890 INFO L93 Difference]: Finished difference Result 3859 states and 6744 transitions. [2020-11-12 03:34:08,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-11-12 03:34:08,892 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:34:08,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:08,896 INFO L225 Difference]: With dead ends: 3859 [2020-11-12 03:34:08,897 INFO L226 Difference]: Without dead ends: 3589 [2020-11-12 03:34:08,897 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=930, Invalid=2852, Unknown=0, NotChecked=0, Total=3782 [2020-11-12 03:34:08,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-11-12 03:34:08,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 2427. [2020-11-12 03:34:08,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2427 states, 2363 states have (on average 1.7812103258569616) internal successors, (4209), 2426 states have internal predecessors, (4209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:08,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 4209 transitions. [2020-11-12 03:34:08,927 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 4209 transitions. Word has length 121 [2020-11-12 03:34:08,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:08,927 INFO L481 AbstractCegarLoop]: Abstraction has 2427 states and 4209 transitions. [2020-11-12 03:34:08,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:08,927 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 4209 transitions. [2020-11-12 03:34:08,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:34:08,929 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:08,929 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:09,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 184 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable188 [2020-11-12 03:34:09,130 INFO L429 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:09,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:09,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1243100026, now seen corresponding path program 179 times [2020-11-12 03:34:09,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:09,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67076465] [2020-11-12 03:34:09,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:09,610 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:09,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67076465] [2020-11-12 03:34:09,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202105121] [2020-11-12 03:34:09,611 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:09,716 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2020-11-12 03:34:09,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:09,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:34:09,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:09,796 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:09,811 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:09,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:09,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-11-12 03:34:09,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288834137] [2020-11-12 03:34:09,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:34:09,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:09,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:34:09,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:34:09,812 INFO L87 Difference]: Start difference. First operand 2427 states and 4209 transitions. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:11,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:11,398 INFO L93 Difference]: Finished difference Result 3859 states and 6724 transitions. [2020-11-12 03:34:11,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 03:34:11,399 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:34:11,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:11,403 INFO L225 Difference]: With dead ends: 3859 [2020-11-12 03:34:11,404 INFO L226 Difference]: Without dead ends: 3589 [2020-11-12 03:34:11,404 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=998, Invalid=2784, Unknown=0, NotChecked=0, Total=3782 [2020-11-12 03:34:11,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-11-12 03:34:11,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 2452. [2020-11-12 03:34:11,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 2388 states have (on average 1.7855946398659968) internal successors, (4264), 2451 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:11,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 4264 transitions. [2020-11-12 03:34:11,450 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 4264 transitions. Word has length 121 [2020-11-12 03:34:11,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:11,450 INFO L481 AbstractCegarLoop]: Abstraction has 2452 states and 4264 transitions. [2020-11-12 03:34:11,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:11,451 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 4264 transitions. [2020-11-12 03:34:11,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:34:11,453 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:11,454 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:11,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2020-11-12 03:34:11,667 INFO L429 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:11,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:11,668 INFO L82 PathProgramCache]: Analyzing trace with hash 579015354, now seen corresponding path program 180 times [2020-11-12 03:34:11,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:11,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067879804] [2020-11-12 03:34:11,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:11,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:12,150 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:12,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067879804] [2020-11-12 03:34:12,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660185559] [2020-11-12 03:34:12,151 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:12,242 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-11-12 03:34:12,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:12,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:34:12,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:12,351 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:12,382 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:12,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:12,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-11-12 03:34:12,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742362035] [2020-11-12 03:34:12,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:34:12,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:12,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:34:12,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:34:12,384 INFO L87 Difference]: Start difference. First operand 2452 states and 4264 transitions. Second operand has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:14,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:14,351 INFO L93 Difference]: Finished difference Result 3859 states and 6704 transitions. [2020-11-12 03:34:14,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-11-12 03:34:14,352 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:34:14,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:14,356 INFO L225 Difference]: With dead ends: 3859 [2020-11-12 03:34:14,357 INFO L226 Difference]: Without dead ends: 3589 [2020-11-12 03:34:14,357 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1004 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=965, Invalid=3067, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 03:34:14,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-11-12 03:34:14,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 2477. [2020-11-12 03:34:14,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2413 states have (on average 1.7898881060920016) internal successors, (4319), 2476 states have internal predecessors, (4319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:14,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 4319 transitions. [2020-11-12 03:34:14,388 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 4319 transitions. Word has length 121 [2020-11-12 03:34:14,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:14,388 INFO L481 AbstractCegarLoop]: Abstraction has 2477 states and 4319 transitions. [2020-11-12 03:34:14,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:14,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 4319 transitions. [2020-11-12 03:34:14,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:34:14,390 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:14,391 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:14,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190,186 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:14,593 INFO L429 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:14,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:14,594 INFO L82 PathProgramCache]: Analyzing trace with hash 877537240, now seen corresponding path program 181 times [2020-11-12 03:34:14,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:14,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940891813] [2020-11-12 03:34:14,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:15,059 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:15,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940891813] [2020-11-12 03:34:15,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963487404] [2020-11-12 03:34:15,060 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:15,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:34:15,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:15,203 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:15,217 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:15,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:15,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-11-12 03:34:15,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218897307] [2020-11-12 03:34:15,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:34:15,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:15,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:34:15,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:34:15,219 INFO L87 Difference]: Start difference. First operand 2477 states and 4319 transitions. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:16,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:16,997 INFO L93 Difference]: Finished difference Result 3859 states and 6684 transitions. [2020-11-12 03:34:16,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-12 03:34:16,999 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:34:16,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:17,003 INFO L225 Difference]: With dead ends: 3859 [2020-11-12 03:34:17,003 INFO L226 Difference]: Without dead ends: 3589 [2020-11-12 03:34:17,004 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1112 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1113, Invalid=2919, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 03:34:17,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-11-12 03:34:17,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 2502. [2020-11-12 03:34:17,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 2438 states have (on average 1.794093519278097) internal successors, (4374), 2501 states have internal predecessors, (4374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:17,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 4374 transitions. [2020-11-12 03:34:17,034 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 4374 transitions. Word has length 121 [2020-11-12 03:34:17,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:17,034 INFO L481 AbstractCegarLoop]: Abstraction has 2502 states and 4374 transitions. [2020-11-12 03:34:17,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:17,035 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 4374 transitions. [2020-11-12 03:34:17,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:34:17,037 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:17,038 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:17,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191,187 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:17,239 INFO L429 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:17,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:17,240 INFO L82 PathProgramCache]: Analyzing trace with hash -743762152, now seen corresponding path program 182 times [2020-11-12 03:34:17,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:17,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028009694] [2020-11-12 03:34:17,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:17,721 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:17,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028009694] [2020-11-12 03:34:17,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227336729] [2020-11-12 03:34:17,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:17,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:34:17,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:17,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:34:17,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:17,844 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:34:17,908 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:17,922 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:17,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:17,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-11-12 03:34:17,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174560628] [2020-11-12 03:34:17,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:34:17,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:17,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:34:17,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:34:17,924 INFO L87 Difference]: Start difference. First operand 2502 states and 4374 transitions. Second operand has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:20,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:20,033 INFO L93 Difference]: Finished difference Result 3904 states and 6742 transitions. [2020-11-12 03:34:20,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-11-12 03:34:20,034 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:34:20,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:20,039 INFO L225 Difference]: With dead ends: 3904 [2020-11-12 03:34:20,039 INFO L226 Difference]: Without dead ends: 3634 [2020-11-12 03:34:20,040 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1147 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1148, Invalid=3142, Unknown=0, NotChecked=0, Total=4290 [2020-11-12 03:34:20,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3634 states. [2020-11-12 03:34:20,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3634 to 2527. [2020-11-12 03:34:20,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2527 states, 2463 states have (on average 1.8006496142915145) internal successors, (4435), 2526 states have internal predecessors, (4435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:20,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2527 states to 2527 states and 4435 transitions. [2020-11-12 03:34:20,070 INFO L78 Accepts]: Start accepts. Automaton has 2527 states and 4435 transitions. Word has length 121 [2020-11-12 03:34:20,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:20,070 INFO L481 AbstractCegarLoop]: Abstraction has 2527 states and 4435 transitions. [2020-11-12 03:34:20,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:20,070 INFO L276 IsEmpty]: Start isEmpty. Operand 2527 states and 4435 transitions. [2020-11-12 03:34:20,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:34:20,072 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:20,072 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:20,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,188 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:20,273 INFO L429 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:20,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:20,274 INFO L82 PathProgramCache]: Analyzing trace with hash 390328012, now seen corresponding path program 183 times [2020-11-12 03:34:20,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:20,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059323550] [2020-11-12 03:34:20,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:20,771 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:20,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059323550] [2020-11-12 03:34:20,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801153203] [2020-11-12 03:34:20,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:20,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-12 03:34:20,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:20,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:34:20,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:20,938 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:20,952 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:20,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:20,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-11-12 03:34:20,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152149870] [2020-11-12 03:34:20,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:34:20,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:20,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:34:20,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:34:20,953 INFO L87 Difference]: Start difference. First operand 2527 states and 4435 transitions. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:22,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:22,857 INFO L93 Difference]: Finished difference Result 4966 states and 8154 transitions. [2020-11-12 03:34:22,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-12 03:34:22,858 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:34:22,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:22,863 INFO L225 Difference]: With dead ends: 4966 [2020-11-12 03:34:22,864 INFO L226 Difference]: Without dead ends: 4681 [2020-11-12 03:34:22,864 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1218 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1245, Invalid=3045, Unknown=0, NotChecked=0, Total=4290 [2020-11-12 03:34:22,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2020-11-12 03:34:22,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 2612. [2020-11-12 03:34:22,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2612 states, 2548 states have (on average 1.8182888540031397) internal successors, (4633), 2611 states have internal predecessors, (4633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:22,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2612 states to 2612 states and 4633 transitions. [2020-11-12 03:34:22,901 INFO L78 Accepts]: Start accepts. Automaton has 2612 states and 4633 transitions. Word has length 121 [2020-11-12 03:34:22,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:22,901 INFO L481 AbstractCegarLoop]: Abstraction has 2612 states and 4633 transitions. [2020-11-12 03:34:22,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:22,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2612 states and 4633 transitions. [2020-11-12 03:34:22,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:34:22,903 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:22,903 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:23,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193,189 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:23,104 INFO L429 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:23,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:23,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1230305204, now seen corresponding path program 184 times [2020-11-12 03:34:23,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:23,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244606613] [2020-11-12 03:34:23,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:23,626 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:23,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244606613] [2020-11-12 03:34:23,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110884885] [2020-11-12 03:34:23,627 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:23,711 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:34:23,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:23,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:34:23,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:23,764 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:34:23,794 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:23,807 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:23,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:23,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-11-12 03:34:23,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634657120] [2020-11-12 03:34:23,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:34:23,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:23,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:34:23,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:34:23,809 INFO L87 Difference]: Start difference. First operand 2612 states and 4633 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:26,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:26,136 INFO L93 Difference]: Finished difference Result 3965 states and 6749 transitions. [2020-11-12 03:34:26,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-12 03:34:26,138 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:34:26,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:26,143 INFO L225 Difference]: With dead ends: 3965 [2020-11-12 03:34:26,143 INFO L226 Difference]: Without dead ends: 3569 [2020-11-12 03:34:26,144 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1258, Invalid=3164, Unknown=0, NotChecked=0, Total=4422 [2020-11-12 03:34:26,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3569 states. [2020-11-12 03:34:26,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3569 to 2067. [2020-11-12 03:34:26,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2067 states, 2003 states have (on average 1.724413379930105) internal successors, (3454), 2066 states have internal predecessors, (3454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:26,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2067 states to 2067 states and 3454 transitions. [2020-11-12 03:34:26,171 INFO L78 Accepts]: Start accepts. Automaton has 2067 states and 3454 transitions. Word has length 121 [2020-11-12 03:34:26,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:26,171 INFO L481 AbstractCegarLoop]: Abstraction has 2067 states and 3454 transitions. [2020-11-12 03:34:26,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:26,171 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states and 3454 transitions. [2020-11-12 03:34:26,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:34:26,173 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:26,173 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:26,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable194 [2020-11-12 03:34:26,374 INFO L429 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:26,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:26,375 INFO L82 PathProgramCache]: Analyzing trace with hash 515030498, now seen corresponding path program 185 times [2020-11-12 03:34:26,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:26,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26365209] [2020-11-12 03:34:26,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:27,035 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:27,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26365209] [2020-11-12 03:34:27,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010898716] [2020-11-12 03:34:27,036 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:27,130 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2020-11-12 03:34:27,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:27,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:34:27,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:27,224 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:27,237 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:27,266 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:27,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:27,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-11-12 03:34:27,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993078057] [2020-11-12 03:34:27,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:34:27,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:27,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:34:27,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:34:27,267 INFO L87 Difference]: Start difference. First operand 2067 states and 3454 transitions. Second operand has 28 states, 28 states have (on average 5.25) internal successors, (147), 28 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:28,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:28,550 INFO L93 Difference]: Finished difference Result 3325 states and 5698 transitions. [2020-11-12 03:34:28,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-12 03:34:28,550 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.25) internal successors, (147), 28 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:34:28,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:28,554 INFO L225 Difference]: With dead ends: 3325 [2020-11-12 03:34:28,554 INFO L226 Difference]: Without dead ends: 2991 [2020-11-12 03:34:28,554 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=760, Invalid=2102, Unknown=0, NotChecked=0, Total=2862 [2020-11-12 03:34:28,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2020-11-12 03:34:28,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 2142. [2020-11-12 03:34:28,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2142 states, 2078 states have (on average 1.7343599615014438) internal successors, (3604), 2141 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:28,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 3604 transitions. [2020-11-12 03:34:28,575 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 3604 transitions. Word has length 126 [2020-11-12 03:34:28,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:28,575 INFO L481 AbstractCegarLoop]: Abstraction has 2142 states and 3604 transitions. [2020-11-12 03:34:28,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.25) internal successors, (147), 28 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:28,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 3604 transitions. [2020-11-12 03:34:28,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:34:28,577 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:28,577 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:28,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,191 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:28,777 INFO L429 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:28,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:28,778 INFO L82 PathProgramCache]: Analyzing trace with hash -797864060, now seen corresponding path program 186 times [2020-11-12 03:34:28,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:28,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634365853] [2020-11-12 03:34:28,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:29,436 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:29,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634365853] [2020-11-12 03:34:29,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31119088] [2020-11-12 03:34:29,437 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:29,538 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-11-12 03:34:29,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:29,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:34:29,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:29,561 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:29,584 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:29,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:29,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-11-12 03:34:29,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212782842] [2020-11-12 03:34:29,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:34:29,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:29,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:34:29,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:34:29,585 INFO L87 Difference]: Start difference. First operand 2142 states and 3604 transitions. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:30,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:30,696 INFO L93 Difference]: Finished difference Result 4054 states and 7354 transitions. [2020-11-12 03:34:30,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-12 03:34:30,697 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:34:30,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:30,702 INFO L225 Difference]: With dead ends: 4054 [2020-11-12 03:34:30,702 INFO L226 Difference]: Without dead ends: 3784 [2020-11-12 03:34:30,702 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=616, Invalid=1640, Unknown=0, NotChecked=0, Total=2256 [2020-11-12 03:34:30,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3784 states. [2020-11-12 03:34:30,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3784 to 2237. [2020-11-12 03:34:30,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2237 states, 2173 states have (on average 1.7321675103543488) internal successors, (3764), 2236 states have internal predecessors, (3764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:30,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2237 states to 2237 states and 3764 transitions. [2020-11-12 03:34:30,734 INFO L78 Accepts]: Start accepts. Automaton has 2237 states and 3764 transitions. Word has length 126 [2020-11-12 03:34:30,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:30,735 INFO L481 AbstractCegarLoop]: Abstraction has 2237 states and 3764 transitions. [2020-11-12 03:34:30,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:30,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2237 states and 3764 transitions. [2020-11-12 03:34:30,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:34:30,736 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:30,736 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:30,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196,192 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:30,937 INFO L429 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:30,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:30,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1322205948, now seen corresponding path program 187 times [2020-11-12 03:34:30,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:30,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719626820] [2020-11-12 03:34:30,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:31,630 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:31,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719626820] [2020-11-12 03:34:31,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973058067] [2020-11-12 03:34:31,630 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:31,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:34:31,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:31,765 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:34:31,786 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:31,807 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:31,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:31,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-11-12 03:34:31,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644266203] [2020-11-12 03:34:31,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:34:31,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:31,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:34:31,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:34:31,808 INFO L87 Difference]: Start difference. First operand 2237 states and 3764 transitions. Second operand has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:33,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:33,115 INFO L93 Difference]: Finished difference Result 4009 states and 7244 transitions. [2020-11-12 03:34:33,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-12 03:34:33,117 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:34:33,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:33,121 INFO L225 Difference]: With dead ends: 4009 [2020-11-12 03:34:33,121 INFO L226 Difference]: Without dead ends: 3739 [2020-11-12 03:34:33,121 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=683, Invalid=1969, Unknown=0, NotChecked=0, Total=2652 [2020-11-12 03:34:33,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3739 states. [2020-11-12 03:34:33,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3739 to 2287. [2020-11-12 03:34:33,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2287 states, 2223 states have (on average 1.7291947818263609) internal successors, (3844), 2286 states have internal predecessors, (3844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:33,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 3844 transitions. [2020-11-12 03:34:33,152 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 3844 transitions. Word has length 126 [2020-11-12 03:34:33,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:33,152 INFO L481 AbstractCegarLoop]: Abstraction has 2287 states and 3844 transitions. [2020-11-12 03:34:33,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:33,152 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 3844 transitions. [2020-11-12 03:34:33,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:34:33,154 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:33,154 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:33,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,193 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:33,355 INFO L429 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:33,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:33,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1031012196, now seen corresponding path program 188 times [2020-11-12 03:34:33,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:33,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26258335] [2020-11-12 03:34:33,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:33,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:33,996 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:33,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26258335] [2020-11-12 03:34:33,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744767515] [2020-11-12 03:34:33,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:34,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:34:34,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:34,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:34:34,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:34,109 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:34,130 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:34,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:34,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-11-12 03:34:34,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984325020] [2020-11-12 03:34:34,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:34:34,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:34,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:34:34,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:34:34,131 INFO L87 Difference]: Start difference. First operand 2287 states and 3844 transitions. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:35,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:35,323 INFO L93 Difference]: Finished difference Result 4034 states and 7274 transitions. [2020-11-12 03:34:35,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-12 03:34:35,324 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:34:35,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:35,329 INFO L225 Difference]: With dead ends: 4034 [2020-11-12 03:34:35,329 INFO L226 Difference]: Without dead ends: 3764 [2020-11-12 03:34:35,330 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=621, Invalid=1829, Unknown=0, NotChecked=0, Total=2450 [2020-11-12 03:34:35,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3764 states. [2020-11-12 03:34:35,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3764 to 2337. [2020-11-12 03:34:35,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2337 states, 2273 states have (on average 1.7263528376594808) internal successors, (3924), 2336 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:35,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2337 states to 2337 states and 3924 transitions. [2020-11-12 03:34:35,360 INFO L78 Accepts]: Start accepts. Automaton has 2337 states and 3924 transitions. Word has length 126 [2020-11-12 03:34:35,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:35,360 INFO L481 AbstractCegarLoop]: Abstraction has 2337 states and 3924 transitions. [2020-11-12 03:34:35,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:35,360 INFO L276 IsEmpty]: Start isEmpty. Operand 2337 states and 3924 transitions. [2020-11-12 03:34:35,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:34:35,362 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:35,362 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:35,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198,194 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:35,566 INFO L429 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:35,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:35,566 INFO L82 PathProgramCache]: Analyzing trace with hash 607027164, now seen corresponding path program 189 times [2020-11-12 03:34:35,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:35,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650856791] [2020-11-12 03:34:35,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:36,237 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:36,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650856791] [2020-11-12 03:34:36,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069342392] [2020-11-12 03:34:36,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:36,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-11-12 03:34:36,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:36,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:34:36,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:36,366 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:34:36,386 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:36,408 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:36,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:36,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-11-12 03:34:36,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271493126] [2020-11-12 03:34:36,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:34:36,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:36,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:34:36,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:34:36,409 INFO L87 Difference]: Start difference. First operand 2337 states and 3924 transitions. Second operand has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:37,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:37,819 INFO L93 Difference]: Finished difference Result 4034 states and 7254 transitions. [2020-11-12 03:34:37,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-12 03:34:37,820 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:34:37,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:37,825 INFO L225 Difference]: With dead ends: 4034 [2020-11-12 03:34:37,825 INFO L226 Difference]: Without dead ends: 3764 [2020-11-12 03:34:37,825 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=696, Invalid=2166, Unknown=0, NotChecked=0, Total=2862 [2020-11-12 03:34:37,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3764 states. [2020-11-12 03:34:37,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3764 to 2362. [2020-11-12 03:34:37,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2362 states, 2298 states have (on average 1.7315056570931244) internal successors, (3979), 2361 states have internal predecessors, (3979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:37,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 3979 transitions. [2020-11-12 03:34:37,855 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 3979 transitions. Word has length 126 [2020-11-12 03:34:37,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:37,855 INFO L481 AbstractCegarLoop]: Abstraction has 2362 states and 3979 transitions. [2020-11-12 03:34:37,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:37,855 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 3979 transitions. [2020-11-12 03:34:37,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:34:37,857 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:37,857 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:38,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2020-11-12 03:34:38,058 INFO L429 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:38,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:38,058 INFO L82 PathProgramCache]: Analyzing trace with hash 2070733818, now seen corresponding path program 190 times [2020-11-12 03:34:38,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:38,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464899198] [2020-11-12 03:34:38,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:38,669 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:38,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464899198] [2020-11-12 03:34:38,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956282203] [2020-11-12 03:34:38,669 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:38,775 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:34:38,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:38,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:34:38,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:38,800 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:38,820 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:38,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:38,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-11-12 03:34:38,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524167400] [2020-11-12 03:34:38,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:34:38,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:38,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:34:38,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:34:38,821 INFO L87 Difference]: Start difference. First operand 2362 states and 3979 transitions. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:40,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:40,145 INFO L93 Difference]: Finished difference Result 4009 states and 7209 transitions. [2020-11-12 03:34:40,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-12 03:34:40,146 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:34:40,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:40,151 INFO L225 Difference]: With dead ends: 4009 [2020-11-12 03:34:40,151 INFO L226 Difference]: Without dead ends: 3739 [2020-11-12 03:34:40,151 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=642, Invalid=2010, Unknown=0, NotChecked=0, Total=2652 [2020-11-12 03:34:40,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3739 states. [2020-11-12 03:34:40,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3739 to 2387. [2020-11-12 03:34:40,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2387 states, 2323 states have (on average 1.7365475678002582) internal successors, (4034), 2386 states have internal predecessors, (4034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:40,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2387 states to 2387 states and 4034 transitions. [2020-11-12 03:34:40,183 INFO L78 Accepts]: Start accepts. Automaton has 2387 states and 4034 transitions. Word has length 126 [2020-11-12 03:34:40,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:40,183 INFO L481 AbstractCegarLoop]: Abstraction has 2387 states and 4034 transitions. [2020-11-12 03:34:40,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:40,183 INFO L276 IsEmpty]: Start isEmpty. Operand 2387 states and 4034 transitions. [2020-11-12 03:34:40,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:34:40,185 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:40,185 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:40,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 196 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable200 [2020-11-12 03:34:40,386 INFO L429 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:40,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:40,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1224117446, now seen corresponding path program 191 times [2020-11-12 03:34:40,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:40,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165677010] [2020-11-12 03:34:40,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:40,987 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:40,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165677010] [2020-11-12 03:34:40,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257132126] [2020-11-12 03:34:40,987 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:41,085 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-11-12 03:34:41,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:41,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:34:41,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:41,132 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:34:41,155 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:41,176 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:41,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:41,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-11-12 03:34:41,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998741638] [2020-11-12 03:34:41,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:34:41,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:41,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:34:41,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:34:41,177 INFO L87 Difference]: Start difference. First operand 2387 states and 4034 transitions. Second operand has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:42,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:42,814 INFO L93 Difference]: Finished difference Result 3984 states and 7164 transitions. [2020-11-12 03:34:42,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-12 03:34:42,815 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:34:42,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:42,820 INFO L225 Difference]: With dead ends: 3984 [2020-11-12 03:34:42,820 INFO L226 Difference]: Without dead ends: 3714 [2020-11-12 03:34:42,820 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 621 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=725, Invalid=2355, Unknown=0, NotChecked=0, Total=3080 [2020-11-12 03:34:42,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3714 states. [2020-11-12 03:34:42,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3714 to 2412. [2020-11-12 03:34:42,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2348 states have (on average 1.741482112436116) internal successors, (4089), 2411 states have internal predecessors, (4089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:42,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 4089 transitions. [2020-11-12 03:34:42,850 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 4089 transitions. Word has length 126 [2020-11-12 03:34:42,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:42,850 INFO L481 AbstractCegarLoop]: Abstraction has 2412 states and 4089 transitions. [2020-11-12 03:34:42,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:42,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 4089 transitions. [2020-11-12 03:34:42,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:34:42,852 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:42,852 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:43,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 197 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2020-11-12 03:34:43,053 INFO L429 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:43,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:43,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1943192792, now seen corresponding path program 192 times [2020-11-12 03:34:43,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:43,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647398599] [2020-11-12 03:34:43,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:43,634 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:43,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647398599] [2020-11-12 03:34:43,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203654734] [2020-11-12 03:34:43,634 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:43,736 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-11-12 03:34:43,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:43,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:34:43,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:43,766 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:43,796 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:43,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:43,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-11-12 03:34:43,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312597634] [2020-11-12 03:34:43,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:34:43,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:43,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:34:43,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:34:43,798 INFO L87 Difference]: Start difference. First operand 2412 states and 4089 transitions. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:45,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:45,359 INFO L93 Difference]: Finished difference Result 3959 states and 7119 transitions. [2020-11-12 03:34:45,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 03:34:45,360 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:34:45,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:45,364 INFO L225 Difference]: With dead ends: 3959 [2020-11-12 03:34:45,364 INFO L226 Difference]: Without dead ends: 3689 [2020-11-12 03:34:45,365 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=679, Invalid=2183, Unknown=0, NotChecked=0, Total=2862 [2020-11-12 03:34:45,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3689 states. [2020-11-12 03:34:45,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3689 to 2437. [2020-11-12 03:34:45,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2437 states, 2373 states have (on average 1.7463126843657817) internal successors, (4144), 2436 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:45,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 4144 transitions. [2020-11-12 03:34:45,394 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 4144 transitions. Word has length 126 [2020-11-12 03:34:45,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:45,395 INFO L481 AbstractCegarLoop]: Abstraction has 2437 states and 4144 transitions. [2020-11-12 03:34:45,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:45,395 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 4144 transitions. [2020-11-12 03:34:45,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:34:45,397 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:45,397 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:45,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2020-11-12 03:34:45,598 INFO L429 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:45,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:45,598 INFO L82 PathProgramCache]: Analyzing trace with hash -943889384, now seen corresponding path program 193 times [2020-11-12 03:34:45,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:45,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889982079] [2020-11-12 03:34:45,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:46,178 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:46,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889982079] [2020-11-12 03:34:46,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847773983] [2020-11-12 03:34:46,178 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:46,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:34:46,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:46,311 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:34:46,334 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:46,354 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:46,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:46,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-11-12 03:34:46,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176438527] [2020-11-12 03:34:46,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:34:46,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:46,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:34:46,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:34:46,355 INFO L87 Difference]: Start difference. First operand 2437 states and 4144 transitions. Second operand has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:48,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:48,069 INFO L93 Difference]: Finished difference Result 3934 states and 7074 transitions. [2020-11-12 03:34:48,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-12 03:34:48,070 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:34:48,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:48,074 INFO L225 Difference]: With dead ends: 3934 [2020-11-12 03:34:48,075 INFO L226 Difference]: Without dead ends: 3664 [2020-11-12 03:34:48,075 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=770, Invalid=2536, Unknown=0, NotChecked=0, Total=3306 [2020-11-12 03:34:48,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3664 states. [2020-11-12 03:34:48,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3664 to 2462. [2020-11-12 03:34:48,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2462 states, 2398 states have (on average 1.7510425354462051) internal successors, (4199), 2461 states have internal predecessors, (4199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:48,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2462 states to 2462 states and 4199 transitions. [2020-11-12 03:34:48,104 INFO L78 Accepts]: Start accepts. Automaton has 2462 states and 4199 transitions. Word has length 126 [2020-11-12 03:34:48,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:48,104 INFO L481 AbstractCegarLoop]: Abstraction has 2462 states and 4199 transitions. [2020-11-12 03:34:48,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:48,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2462 states and 4199 transitions. [2020-11-12 03:34:48,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:34:48,106 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:48,106 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:48,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203,199 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:48,307 INFO L429 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:48,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:48,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1865120970, now seen corresponding path program 194 times [2020-11-12 03:34:48,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:48,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475372535] [2020-11-12 03:34:48,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:48,861 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:48,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475372535] [2020-11-12 03:34:48,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148964658] [2020-11-12 03:34:48,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:48,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:34:48,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:48,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:34:48,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:48,986 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:49,007 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:49,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:49,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-11-12 03:34:49,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766000370] [2020-11-12 03:34:49,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:34:49,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:49,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:34:49,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:34:49,008 INFO L87 Difference]: Start difference. First operand 2462 states and 4199 transitions. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:50,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:50,609 INFO L93 Difference]: Finished difference Result 3909 states and 7029 transitions. [2020-11-12 03:34:50,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 03:34:50,610 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:34:50,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:50,614 INFO L225 Difference]: With dead ends: 3909 [2020-11-12 03:34:50,614 INFO L226 Difference]: Without dead ends: 3639 [2020-11-12 03:34:50,614 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=732, Invalid=2348, Unknown=0, NotChecked=0, Total=3080 [2020-11-12 03:34:50,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3639 states. [2020-11-12 03:34:50,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3639 to 2487. [2020-11-12 03:34:50,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2487 states, 2423 states have (on average 1.7556747833264548) internal successors, (4254), 2486 states have internal predecessors, (4254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:50,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2487 states to 2487 states and 4254 transitions. [2020-11-12 03:34:50,643 INFO L78 Accepts]: Start accepts. Automaton has 2487 states and 4254 transitions. Word has length 126 [2020-11-12 03:34:50,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:50,643 INFO L481 AbstractCegarLoop]: Abstraction has 2487 states and 4254 transitions. [2020-11-12 03:34:50,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:50,643 INFO L276 IsEmpty]: Start isEmpty. Operand 2487 states and 4254 transitions. [2020-11-12 03:34:50,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:34:50,645 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:50,645 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:50,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 200 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable204 [2020-11-12 03:34:50,846 INFO L429 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:50,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:50,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1415656054, now seen corresponding path program 195 times [2020-11-12 03:34:50,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:50,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215134126] [2020-11-12 03:34:50,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:51,418 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:51,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215134126] [2020-11-12 03:34:51,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971913375] [2020-11-12 03:34:51,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:51,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-11-12 03:34:51,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:51,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 37 conjunts are in the unsatisfiable core [2020-11-12 03:34:51,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:51,590 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:51,608 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:51,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:51,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-11-12 03:34:51,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622109434] [2020-11-12 03:34:51,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:34:51,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:51,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:34:51,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:34:51,609 INFO L87 Difference]: Start difference. First operand 2487 states and 4254 transitions. Second operand has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:53,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:53,440 INFO L93 Difference]: Finished difference Result 3884 states and 6984 transitions. [2020-11-12 03:34:53,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-12 03:34:53,441 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:34:53,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:53,445 INFO L225 Difference]: With dead ends: 3884 [2020-11-12 03:34:53,445 INFO L226 Difference]: Without dead ends: 3614 [2020-11-12 03:34:53,445 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=734, Invalid=2572, Unknown=0, NotChecked=0, Total=3306 [2020-11-12 03:34:53,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3614 states. [2020-11-12 03:34:53,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3614 to 2512. [2020-11-12 03:34:53,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2512 states, 2448 states have (on average 1.7602124183006536) internal successors, (4309), 2511 states have internal predecessors, (4309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:53,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2512 states to 2512 states and 4309 transitions. [2020-11-12 03:34:53,476 INFO L78 Accepts]: Start accepts. Automaton has 2512 states and 4309 transitions. Word has length 126 [2020-11-12 03:34:53,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:53,476 INFO L481 AbstractCegarLoop]: Abstraction has 2512 states and 4309 transitions. [2020-11-12 03:34:53,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:53,476 INFO L276 IsEmpty]: Start isEmpty. Operand 2512 states and 4309 transitions. [2020-11-12 03:34:53,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:34:53,478 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:53,478 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:53,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205,201 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:53,679 INFO L429 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:53,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:53,680 INFO L82 PathProgramCache]: Analyzing trace with hash -56557804, now seen corresponding path program 196 times [2020-11-12 03:34:53,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:53,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642358313] [2020-11-12 03:34:53,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:54,205 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:54,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642358313] [2020-11-12 03:34:54,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745414413] [2020-11-12 03:34:54,205 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:54,295 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:34:54,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:54,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:34:54,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:54,325 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:54,343 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:54,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:54,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-11-12 03:34:54,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979253536] [2020-11-12 03:34:54,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:34:54,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:54,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:34:54,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:34:54,344 INFO L87 Difference]: Start difference. First operand 2512 states and 4309 transitions. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:56,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:56,022 INFO L93 Difference]: Finished difference Result 3859 states and 6939 transitions. [2020-11-12 03:34:56,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 03:34:56,023 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:34:56,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:56,028 INFO L225 Difference]: With dead ends: 3859 [2020-11-12 03:34:56,028 INFO L226 Difference]: Without dead ends: 3589 [2020-11-12 03:34:56,029 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 763 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=801, Invalid=2505, Unknown=0, NotChecked=0, Total=3306 [2020-11-12 03:34:56,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-11-12 03:34:56,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 2537. [2020-11-12 03:34:56,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2537 states, 2473 states have (on average 1.7646583097452486) internal successors, (4364), 2536 states have internal predecessors, (4364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:56,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2537 states to 2537 states and 4364 transitions. [2020-11-12 03:34:56,059 INFO L78 Accepts]: Start accepts. Automaton has 2537 states and 4364 transitions. Word has length 126 [2020-11-12 03:34:56,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:56,059 INFO L481 AbstractCegarLoop]: Abstraction has 2537 states and 4364 transitions. [2020-11-12 03:34:56,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:56,059 INFO L276 IsEmpty]: Start isEmpty. Operand 2537 states and 4364 transitions. [2020-11-12 03:34:56,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:34:56,061 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:56,061 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:56,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 202 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable206 [2020-11-12 03:34:56,263 INFO L429 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:56,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:56,263 INFO L82 PathProgramCache]: Analyzing trace with hash -534528428, now seen corresponding path program 197 times [2020-11-12 03:34:56,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:56,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659381198] [2020-11-12 03:34:56,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:56,846 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:56,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659381198] [2020-11-12 03:34:56,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456436278] [2020-11-12 03:34:56,846 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:56,943 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-11-12 03:34:56,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:56,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:34:56,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:56,990 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:34:57,015 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:57,033 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:57,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:57,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-11-12 03:34:57,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814874974] [2020-11-12 03:34:57,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:34:57,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:57,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:34:57,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:34:57,034 INFO L87 Difference]: Start difference. First operand 2537 states and 4364 transitions. Second operand has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:59,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:59,172 INFO L93 Difference]: Finished difference Result 3834 states and 6894 transitions. [2020-11-12 03:34:59,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-11-12 03:34:59,173 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:34:59,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:59,178 INFO L225 Difference]: With dead ends: 3834 [2020-11-12 03:34:59,178 INFO L226 Difference]: Without dead ends: 3564 [2020-11-12 03:34:59,178 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=908, Invalid=2874, Unknown=0, NotChecked=0, Total=3782 [2020-11-12 03:34:59,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3564 states. [2020-11-12 03:34:59,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3564 to 2562. [2020-11-12 03:34:59,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2562 states, 2498 states have (on average 1.7690152121697358) internal successors, (4419), 2561 states have internal predecessors, (4419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:59,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2562 states to 2562 states and 4419 transitions. [2020-11-12 03:34:59,224 INFO L78 Accepts]: Start accepts. Automaton has 2562 states and 4419 transitions. Word has length 126 [2020-11-12 03:34:59,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:59,224 INFO L481 AbstractCegarLoop]: Abstraction has 2562 states and 4419 transitions. [2020-11-12 03:34:59,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:59,224 INFO L276 IsEmpty]: Start isEmpty. Operand 2562 states and 4419 transitions. [2020-11-12 03:34:59,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:34:59,226 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:59,226 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:59,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207,203 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:59,427 INFO L429 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:59,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:59,428 INFO L82 PathProgramCache]: Analyzing trace with hash 612309106, now seen corresponding path program 198 times [2020-11-12 03:34:59,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:59,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702196307] [2020-11-12 03:34:59,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:59,954 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:59,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702196307] [2020-11-12 03:34:59,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295560668] [2020-11-12 03:34:59,954 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:00,052 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-11-12 03:35:00,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:35:00,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:35:00,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:00,087 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:00,103 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:00,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:00,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-11-12 03:35:00,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356173707] [2020-11-12 03:35:00,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:35:00,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:00,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:35:00,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:35:00,104 INFO L87 Difference]: Start difference. First operand 2562 states and 4419 transitions. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:01,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:01,910 INFO L93 Difference]: Finished difference Result 3809 states and 6849 transitions. [2020-11-12 03:35:01,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 03:35:01,912 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:35:01,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:01,916 INFO L225 Difference]: With dead ends: 3809 [2020-11-12 03:35:01,916 INFO L226 Difference]: Without dead ends: 3539 [2020-11-12 03:35:01,917 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=886, Invalid=2654, Unknown=0, NotChecked=0, Total=3540 [2020-11-12 03:35:01,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3539 states. [2020-11-12 03:35:01,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3539 to 2587. [2020-11-12 03:35:01,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2587 states, 2523 states have (on average 1.7732857709076497) internal successors, (4474), 2586 states have internal predecessors, (4474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:01,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2587 states to 2587 states and 4474 transitions. [2020-11-12 03:35:01,949 INFO L78 Accepts]: Start accepts. Automaton has 2587 states and 4474 transitions. Word has length 126 [2020-11-12 03:35:01,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:01,950 INFO L481 AbstractCegarLoop]: Abstraction has 2587 states and 4474 transitions. [2020-11-12 03:35:01,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:01,950 INFO L276 IsEmpty]: Start isEmpty. Operand 2587 states and 4474 transitions. [2020-11-12 03:35:01,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:35:01,952 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:01,952 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:02,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,204 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:02,153 INFO L429 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:02,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:02,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1900799922, now seen corresponding path program 199 times [2020-11-12 03:35:02,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:02,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15995623] [2020-11-12 03:35:02,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:02,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:02,715 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:02,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15995623] [2020-11-12 03:35:02,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840545067] [2020-11-12 03:35:02,715 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:02,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:35:02,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:02,845 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:35:02,871 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:02,888 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:02,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:02,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-11-12 03:35:02,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375172899] [2020-11-12 03:35:02,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:35:02,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:02,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:35:02,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:35:02,889 INFO L87 Difference]: Start difference. First operand 2587 states and 4474 transitions. Second operand has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:05,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:05,153 INFO L93 Difference]: Finished difference Result 3784 states and 6804 transitions. [2020-11-12 03:35:05,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-11-12 03:35:05,154 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:35:05,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:05,158 INFO L225 Difference]: With dead ends: 3784 [2020-11-12 03:35:05,158 INFO L226 Difference]: Without dead ends: 3514 [2020-11-12 03:35:05,159 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 965 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1001, Invalid=3031, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 03:35:05,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3514 states. [2020-11-12 03:35:05,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3514 to 2612. [2020-11-12 03:35:05,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2612 states, 2548 states have (on average 1.7774725274725274) internal successors, (4529), 2611 states have internal predecessors, (4529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:05,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2612 states to 2612 states and 4529 transitions. [2020-11-12 03:35:05,209 INFO L78 Accepts]: Start accepts. Automaton has 2612 states and 4529 transitions. Word has length 126 [2020-11-12 03:35:05,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:05,209 INFO L481 AbstractCegarLoop]: Abstraction has 2612 states and 4529 transitions. [2020-11-12 03:35:05,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:05,209 INFO L276 IsEmpty]: Start isEmpty. Operand 2612 states and 4529 transitions. [2020-11-12 03:35:05,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:35:05,211 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:05,212 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:05,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209,205 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:05,412 INFO L429 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:05,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:05,413 INFO L82 PathProgramCache]: Analyzing trace with hash 919449424, now seen corresponding path program 200 times [2020-11-12 03:35:05,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:05,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044070571] [2020-11-12 03:35:05,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:05,968 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:05,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044070571] [2020-11-12 03:35:05,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007904884] [2020-11-12 03:35:05,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:06,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:35:06,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:35:06,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:35:06,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:06,100 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:06,115 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:06,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:06,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-11-12 03:35:06,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544071815] [2020-11-12 03:35:06,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:35:06,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:06,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:35:06,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:35:06,117 INFO L87 Difference]: Start difference. First operand 2612 states and 4529 transitions. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:08,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:08,029 INFO L93 Difference]: Finished difference Result 3759 states and 6759 transitions. [2020-11-12 03:35:08,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 03:35:08,030 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:35:08,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:08,035 INFO L225 Difference]: With dead ends: 3759 [2020-11-12 03:35:08,035 INFO L226 Difference]: Without dead ends: 3489 [2020-11-12 03:35:08,035 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 937 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=987, Invalid=2795, Unknown=0, NotChecked=0, Total=3782 [2020-11-12 03:35:08,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3489 states. [2020-11-12 03:35:08,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3489 to 2637. [2020-11-12 03:35:08,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2637 states, 2573 states have (on average 1.7815779246016323) internal successors, (4584), 2636 states have internal predecessors, (4584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:08,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2637 states to 2637 states and 4584 transitions. [2020-11-12 03:35:08,068 INFO L78 Accepts]: Start accepts. Automaton has 2637 states and 4584 transitions. Word has length 126 [2020-11-12 03:35:08,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:08,068 INFO L481 AbstractCegarLoop]: Abstraction has 2637 states and 4584 transitions. [2020-11-12 03:35:08,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:08,068 INFO L276 IsEmpty]: Start isEmpty. Operand 2637 states and 4584 transitions. [2020-11-12 03:35:08,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:35:08,070 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:08,070 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:08,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 206 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable210 [2020-11-12 03:35:08,271 INFO L429 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:08,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:08,271 INFO L82 PathProgramCache]: Analyzing trace with hash 255364752, now seen corresponding path program 201 times [2020-11-12 03:35:08,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:08,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327000141] [2020-11-12 03:35:08,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:08,824 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:08,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327000141] [2020-11-12 03:35:08,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567244509] [2020-11-12 03:35:08,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:08,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-11-12 03:35:08,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:35:08,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:35:08,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:09,008 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:09,023 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:09,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:09,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-11-12 03:35:09,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190654960] [2020-11-12 03:35:09,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:35:09,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:09,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:35:09,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:35:09,025 INFO L87 Difference]: Start difference. First operand 2637 states and 4584 transitions. Second operand has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:11,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:11,324 INFO L93 Difference]: Finished difference Result 3734 states and 6714 transitions. [2020-11-12 03:35:11,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-11-12 03:35:11,325 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:35:11,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:11,329 INFO L225 Difference]: With dead ends: 3734 [2020-11-12 03:35:11,330 INFO L226 Difference]: Without dead ends: 3464 [2020-11-12 03:35:11,330 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=950, Invalid=3082, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 03:35:11,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3464 states. [2020-11-12 03:35:11,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3464 to 2662. [2020-11-12 03:35:11,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2662 states, 2598 states have (on average 1.785604311008468) internal successors, (4639), 2661 states have internal predecessors, (4639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:11,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2662 states to 2662 states and 4639 transitions. [2020-11-12 03:35:11,380 INFO L78 Accepts]: Start accepts. Automaton has 2662 states and 4639 transitions. Word has length 126 [2020-11-12 03:35:11,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:11,380 INFO L481 AbstractCegarLoop]: Abstraction has 2662 states and 4639 transitions. [2020-11-12 03:35:11,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:11,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2662 states and 4639 transitions. [2020-11-12 03:35:11,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:35:11,383 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:11,383 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:11,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable211 [2020-11-12 03:35:11,583 INFO L429 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:11,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:11,584 INFO L82 PathProgramCache]: Analyzing trace with hash 553886638, now seen corresponding path program 202 times [2020-11-12 03:35:11,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:11,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217198944] [2020-11-12 03:35:11,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:12,106 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:12,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217198944] [2020-11-12 03:35:12,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424068964] [2020-11-12 03:35:12,106 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:12,197 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:35:12,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:35:12,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:35:12,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:12,250 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:12,264 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:12,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:12,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-11-12 03:35:12,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894247313] [2020-11-12 03:35:12,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:35:12,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:12,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:35:12,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:35:12,265 INFO L87 Difference]: Start difference. First operand 2662 states and 4639 transitions. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:14,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:14,287 INFO L93 Difference]: Finished difference Result 3709 states and 6669 transitions. [2020-11-12 03:35:14,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-12 03:35:14,289 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:35:14,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:14,293 INFO L225 Difference]: With dead ends: 3709 [2020-11-12 03:35:14,293 INFO L226 Difference]: Without dead ends: 3439 [2020-11-12 03:35:14,294 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1030 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1104, Invalid=2928, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 03:35:14,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3439 states. [2020-11-12 03:35:14,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3439 to 2687. [2020-11-12 03:35:14,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2687 states, 2623 states have (on average 1.789553945863515) internal successors, (4694), 2686 states have internal predecessors, (4694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:14,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2687 states to 2687 states and 4694 transitions. [2020-11-12 03:35:14,324 INFO L78 Accepts]: Start accepts. Automaton has 2687 states and 4694 transitions. Word has length 126 [2020-11-12 03:35:14,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:14,325 INFO L481 AbstractCegarLoop]: Abstraction has 2687 states and 4694 transitions. [2020-11-12 03:35:14,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:14,325 INFO L276 IsEmpty]: Start isEmpty. Operand 2687 states and 4694 transitions. [2020-11-12 03:35:14,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:35:14,327 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:14,327 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:14,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 208 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable212 [2020-11-12 03:35:14,528 INFO L429 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:14,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:14,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1067412754, now seen corresponding path program 203 times [2020-11-12 03:35:14,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:14,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434361051] [2020-11-12 03:35:14,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:15,079 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:15,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434361051] [2020-11-12 03:35:15,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333962112] [2020-11-12 03:35:15,079 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:15,175 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-11-12 03:35:15,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:35:15,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:35:15,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:15,223 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:35:15,249 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:15,264 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:15,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:15,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-11-12 03:35:15,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844532434] [2020-11-12 03:35:15,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:35:15,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:15,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:35:15,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:35:15,265 INFO L87 Difference]: Start difference. First operand 2687 states and 4694 transitions. Second operand has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:17,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:17,873 INFO L93 Difference]: Finished difference Result 3729 states and 6702 transitions. [2020-11-12 03:35:17,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-11-12 03:35:17,875 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:35:17,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:17,879 INFO L225 Difference]: With dead ends: 3729 [2020-11-12 03:35:17,879 INFO L226 Difference]: Without dead ends: 3459 [2020-11-12 03:35:17,880 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1161 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1235, Invalid=3321, Unknown=0, NotChecked=0, Total=4556 [2020-11-12 03:35:17,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3459 states. [2020-11-12 03:35:17,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3459 to 2712. [2020-11-12 03:35:17,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2712 states, 2648 states have (on average 1.7956948640483383) internal successors, (4755), 2711 states have internal predecessors, (4755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:17,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2712 states to 2712 states and 4755 transitions. [2020-11-12 03:35:17,910 INFO L78 Accepts]: Start accepts. Automaton has 2712 states and 4755 transitions. Word has length 126 [2020-11-12 03:35:17,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:17,910 INFO L481 AbstractCegarLoop]: Abstraction has 2712 states and 4755 transitions. [2020-11-12 03:35:17,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:17,910 INFO L276 IsEmpty]: Start isEmpty. Operand 2712 states and 4755 transitions. [2020-11-12 03:35:17,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:35:17,912 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:17,912 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:18,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 209 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable213 [2020-11-12 03:35:18,113 INFO L429 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:18,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:18,114 INFO L82 PathProgramCache]: Analyzing trace with hash 66677410, now seen corresponding path program 204 times [2020-11-12 03:35:18,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:18,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426438403] [2020-11-12 03:35:18,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:18,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:18,617 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:18,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426438403] [2020-11-12 03:35:18,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122326798] [2020-11-12 03:35:18,617 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:18,716 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-11-12 03:35:18,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:35:18,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:35:18,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:18,755 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:18,770 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:18,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:18,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-11-12 03:35:18,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984877814] [2020-11-12 03:35:18,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:35:18,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:18,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:35:18,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:35:18,772 INFO L87 Difference]: Start difference. First operand 2712 states and 4755 transitions. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:20,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:20,881 INFO L93 Difference]: Finished difference Result 4791 states and 8139 transitions. [2020-11-12 03:35:20,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-12 03:35:20,882 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:35:20,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:20,887 INFO L225 Difference]: With dead ends: 4791 [2020-11-12 03:35:20,887 INFO L226 Difference]: Without dead ends: 4506 [2020-11-12 03:35:20,888 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1238, Invalid=3052, Unknown=0, NotChecked=0, Total=4290 [2020-11-12 03:35:20,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4506 states. [2020-11-12 03:35:20,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4506 to 2797. [2020-11-12 03:35:20,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2797 states, 2733 states have (on average 1.8122941822173435) internal successors, (4953), 2796 states have internal predecessors, (4953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:20,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 4953 transitions. [2020-11-12 03:35:20,922 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 4953 transitions. Word has length 126 [2020-11-12 03:35:20,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:20,922 INFO L481 AbstractCegarLoop]: Abstraction has 2797 states and 4953 transitions. [2020-11-12 03:35:20,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:20,923 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 4953 transitions. [2020-11-12 03:35:20,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:35:20,925 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:20,925 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:21,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 210 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable214 [2020-11-12 03:35:21,126 INFO L429 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:21,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:21,126 INFO L82 PathProgramCache]: Analyzing trace with hash 906654602, now seen corresponding path program 205 times [2020-11-12 03:35:21,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:21,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426863936] [2020-11-12 03:35:21,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:21,660 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:21,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426863936] [2020-11-12 03:35:21,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001388592] [2020-11-12 03:35:21,661 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:21,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:21,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:35:21,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:21,784 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:35:21,811 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:21,825 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:21,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:21,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-11-12 03:35:21,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774000675] [2020-11-12 03:35:21,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:35:21,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:21,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:35:21,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:35:21,826 INFO L87 Difference]: Start difference. First operand 2797 states and 4953 transitions. Second operand has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:24,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:24,470 INFO L93 Difference]: Finished difference Result 3790 states and 6759 transitions. [2020-11-12 03:35:24,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-11-12 03:35:24,471 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:35:24,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:24,476 INFO L225 Difference]: With dead ends: 3790 [2020-11-12 03:35:24,476 INFO L226 Difference]: Without dead ends: 3394 [2020-11-12 03:35:24,476 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1265 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1379, Invalid=3451, Unknown=0, NotChecked=0, Total=4830 [2020-11-12 03:35:24,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3394 states. [2020-11-12 03:35:24,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3394 to 2262. [2020-11-12 03:35:24,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2262 states, 2198 states have (on average 1.7261146496815287) internal successors, (3794), 2261 states have internal predecessors, (3794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:24,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 3794 transitions. [2020-11-12 03:35:24,501 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 3794 transitions. Word has length 126 [2020-11-12 03:35:24,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:24,502 INFO L481 AbstractCegarLoop]: Abstraction has 2262 states and 3794 transitions. [2020-11-12 03:35:24,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:24,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 3794 transitions. [2020-11-12 03:35:24,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:35:24,503 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:24,503 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:24,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215,211 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:24,704 INFO L429 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:24,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:24,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1515323913, now seen corresponding path program 206 times [2020-11-12 03:35:24,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:24,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279217614] [2020-11-12 03:35:24,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:25,409 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:25,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279217614] [2020-11-12 03:35:25,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216827679] [2020-11-12 03:35:25,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:25,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:35:25,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:35:25,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:35:25,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:25,568 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:25,593 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:25,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:25,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-11-12 03:35:25,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867121605] [2020-11-12 03:35:25,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:35:25,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:25,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:35:25,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:35:25,594 INFO L87 Difference]: Start difference. First operand 2262 states and 3794 transitions. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:26,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:26,889 INFO L93 Difference]: Finished difference Result 3659 states and 6524 transitions. [2020-11-12 03:35:26,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-12 03:35:26,891 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:35:26,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:26,895 INFO L225 Difference]: With dead ends: 3659 [2020-11-12 03:35:26,895 INFO L226 Difference]: Without dead ends: 3389 [2020-11-12 03:35:26,895 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=722, Invalid=2034, Unknown=0, NotChecked=0, Total=2756 [2020-11-12 03:35:26,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3389 states. [2020-11-12 03:35:26,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3389 to 2302. [2020-11-12 03:35:26,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2302 states, 2238 states have (on average 1.7265415549597856) internal successors, (3864), 2301 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:26,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 3864 transitions. [2020-11-12 03:35:26,921 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 3864 transitions. Word has length 131 [2020-11-12 03:35:26,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:26,922 INFO L481 AbstractCegarLoop]: Abstraction has 2302 states and 3864 transitions. [2020-11-12 03:35:26,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:26,922 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 3864 transitions. [2020-11-12 03:35:26,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:35:26,923 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:26,924 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:27,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 212 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable216 [2020-11-12 03:35:27,124 INFO L429 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:27,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:27,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1834324681, now seen corresponding path program 207 times [2020-11-12 03:35:27,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:27,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967985204] [2020-11-12 03:35:27,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:27,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:27,869 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:27,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967985204] [2020-11-12 03:35:27,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738767094] [2020-11-12 03:35:27,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:27,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-11-12 03:35:27,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:35:27,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:35:27,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:28,010 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:35:28,079 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:28,103 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:28,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:28,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-11-12 03:35:28,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205017486] [2020-11-12 03:35:28,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:35:28,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:28,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:35:28,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:35:28,104 INFO L87 Difference]: Start difference. First operand 2302 states and 3864 transitions. Second operand has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:29,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:29,523 INFO L93 Difference]: Finished difference Result 4144 states and 7474 transitions. [2020-11-12 03:35:29,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-12 03:35:29,524 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:35:29,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:29,529 INFO L225 Difference]: With dead ends: 4144 [2020-11-12 03:35:29,530 INFO L226 Difference]: Without dead ends: 3874 [2020-11-12 03:35:29,530 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=780, Invalid=2300, Unknown=0, NotChecked=0, Total=3080 [2020-11-12 03:35:29,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3874 states. [2020-11-12 03:35:29,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3874 to 2327. [2020-11-12 03:35:29,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2327 states, 2263 states have (on average 1.7317719840919135) internal successors, (3919), 2326 states have internal predecessors, (3919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:29,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2327 states to 2327 states and 3919 transitions. [2020-11-12 03:35:29,582 INFO L78 Accepts]: Start accepts. Automaton has 2327 states and 3919 transitions. Word has length 131 [2020-11-12 03:35:29,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:29,582 INFO L481 AbstractCegarLoop]: Abstraction has 2327 states and 3919 transitions. [2020-11-12 03:35:29,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:29,583 INFO L276 IsEmpty]: Start isEmpty. Operand 2327 states and 3919 transitions. [2020-11-12 03:35:29,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:35:29,584 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:29,584 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:29,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217,213 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:29,785 INFO L429 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:29,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:29,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1023984597, now seen corresponding path program 208 times [2020-11-12 03:35:29,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:29,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574159239] [2020-11-12 03:35:29,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:30,454 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:30,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574159239] [2020-11-12 03:35:30,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060189444] [2020-11-12 03:35:30,454 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:30,547 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:35:30,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:35:30,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:35:30,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:30,617 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:30,641 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:30,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:30,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-11-12 03:35:30,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602451162] [2020-11-12 03:35:30,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:35:30,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:30,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:35:30,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:35:30,644 INFO L87 Difference]: Start difference. First operand 2327 states and 3919 transitions. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:32,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:32,020 INFO L93 Difference]: Finished difference Result 4159 states and 7484 transitions. [2020-11-12 03:35:32,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 03:35:32,022 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:35:32,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:32,026 INFO L225 Difference]: With dead ends: 4159 [2020-11-12 03:35:32,027 INFO L226 Difference]: Without dead ends: 3889 [2020-11-12 03:35:32,027 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=776, Invalid=2304, Unknown=0, NotChecked=0, Total=3080 [2020-11-12 03:35:32,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-11-12 03:35:32,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2352. [2020-11-12 03:35:32,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2352 states, 2288 states have (on average 1.7368881118881119) internal successors, (3974), 2351 states have internal predecessors, (3974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:32,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 3974 transitions. [2020-11-12 03:35:32,057 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 3974 transitions. Word has length 131 [2020-11-12 03:35:32,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:32,057 INFO L481 AbstractCegarLoop]: Abstraction has 2352 states and 3974 transitions. [2020-11-12 03:35:32,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:32,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 3974 transitions. [2020-11-12 03:35:32,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:35:32,059 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:32,060 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:32,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218,214 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:32,260 INFO L429 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:32,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:32,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1632943339, now seen corresponding path program 209 times [2020-11-12 03:35:32,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:32,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417451477] [2020-11-12 03:35:32,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:33,007 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:33,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417451477] [2020-11-12 03:35:33,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355656740] [2020-11-12 03:35:33,008 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:33,109 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-11-12 03:35:33,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:35:33,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:35:33,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:33,154 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:35:33,224 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:33,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:33,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-11-12 03:35:33,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697183018] [2020-11-12 03:35:33,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:35:33,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:33,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:35:33,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:35:33,248 INFO L87 Difference]: Start difference. First operand 2352 states and 3974 transitions. Second operand has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:34,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:34,867 INFO L93 Difference]: Finished difference Result 4159 states and 7464 transitions. [2020-11-12 03:35:34,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-12 03:35:34,868 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:35:34,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:34,873 INFO L225 Difference]: With dead ends: 4159 [2020-11-12 03:35:34,873 INFO L226 Difference]: Without dead ends: 3889 [2020-11-12 03:35:34,873 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=799, Invalid=2507, Unknown=0, NotChecked=0, Total=3306 [2020-11-12 03:35:34,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-11-12 03:35:34,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2377. [2020-11-12 03:35:34,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2377 states, 2313 states have (on average 1.74189364461738) internal successors, (4029), 2376 states have internal predecessors, (4029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:34,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2377 states to 2377 states and 4029 transitions. [2020-11-12 03:35:34,905 INFO L78 Accepts]: Start accepts. Automaton has 2377 states and 4029 transitions. Word has length 131 [2020-11-12 03:35:34,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:34,905 INFO L481 AbstractCegarLoop]: Abstraction has 2377 states and 4029 transitions. [2020-11-12 03:35:34,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:34,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2377 states and 4029 transitions. [2020-11-12 03:35:34,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:35:34,907 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:34,907 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:35,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219,215 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:35,108 INFO L429 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:35,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:35,108 INFO L82 PathProgramCache]: Analyzing trace with hash -169236685, now seen corresponding path program 210 times [2020-11-12 03:35:35,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:35,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931092520] [2020-11-12 03:35:35,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:35,784 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:35,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931092520] [2020-11-12 03:35:35,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600913007] [2020-11-12 03:35:35,784 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:35,886 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-11-12 03:35:35,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:35:35,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:35:35,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:35,957 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:35,980 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:35,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:35,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-11-12 03:35:35,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964014376] [2020-11-12 03:35:35,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:35:35,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:35,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:35:35,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:35:35,982 INFO L87 Difference]: Start difference. First operand 2377 states and 4029 transitions. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:37,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:37,544 INFO L93 Difference]: Finished difference Result 4159 states and 7444 transitions. [2020-11-12 03:35:37,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 03:35:37,545 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:35:37,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:37,549 INFO L225 Difference]: With dead ends: 4159 [2020-11-12 03:35:37,549 INFO L226 Difference]: Without dead ends: 3889 [2020-11-12 03:35:37,550 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=809, Invalid=2497, Unknown=0, NotChecked=0, Total=3306 [2020-11-12 03:35:37,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-11-12 03:35:37,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2402. [2020-11-12 03:35:37,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2402 states, 2338 states have (on average 1.746792130025663) internal successors, (4084), 2401 states have internal predecessors, (4084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:37,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2402 states to 2402 states and 4084 transitions. [2020-11-12 03:35:37,580 INFO L78 Accepts]: Start accepts. Automaton has 2402 states and 4084 transitions. Word has length 131 [2020-11-12 03:35:37,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:37,580 INFO L481 AbstractCegarLoop]: Abstraction has 2402 states and 4084 transitions. [2020-11-12 03:35:37,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:37,581 INFO L276 IsEmpty]: Start isEmpty. Operand 2402 states and 4084 transitions. [2020-11-12 03:35:37,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:35:37,582 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:37,582 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:37,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220,216 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:37,783 INFO L429 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:37,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:37,784 INFO L82 PathProgramCache]: Analyzing trace with hash 830879347, now seen corresponding path program 211 times [2020-11-12 03:35:37,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:37,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038354696] [2020-11-12 03:35:37,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:38,501 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:38,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038354696] [2020-11-12 03:35:38,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762474548] [2020-11-12 03:35:38,501 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:38,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:35:38,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:38,637 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:35:38,704 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:38,726 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:38,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:38,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-11-12 03:35:38,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289975563] [2020-11-12 03:35:38,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:35:38,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:38,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:35:38,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:35:38,727 INFO L87 Difference]: Start difference. First operand 2402 states and 4084 transitions. Second operand has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:40,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:40,473 INFO L93 Difference]: Finished difference Result 4159 states and 7424 transitions. [2020-11-12 03:35:40,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-12 03:35:40,475 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:35:40,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:40,479 INFO L225 Difference]: With dead ends: 4159 [2020-11-12 03:35:40,480 INFO L226 Difference]: Without dead ends: 3889 [2020-11-12 03:35:40,480 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 754 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=834, Invalid=2706, Unknown=0, NotChecked=0, Total=3540 [2020-11-12 03:35:40,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-11-12 03:35:40,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2427. [2020-11-12 03:35:40,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2427 states, 2363 states have (on average 1.7515869657215404) internal successors, (4139), 2426 states have internal predecessors, (4139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:40,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 4139 transitions. [2020-11-12 03:35:40,513 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 4139 transitions. Word has length 131 [2020-11-12 03:35:40,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:40,513 INFO L481 AbstractCegarLoop]: Abstraction has 2427 states and 4139 transitions. [2020-11-12 03:35:40,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:40,513 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 4139 transitions. [2020-11-12 03:35:40,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:35:40,515 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:40,515 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:40,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 217 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable221 [2020-11-12 03:35:40,716 INFO L429 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:40,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:40,716 INFO L82 PathProgramCache]: Analyzing trace with hash -296777711, now seen corresponding path program 212 times [2020-11-12 03:35:40,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:40,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438787497] [2020-11-12 03:35:40,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:41,370 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:41,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438787497] [2020-11-12 03:35:41,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412820755] [2020-11-12 03:35:41,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:41,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:35:41,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:35:41,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:35:41,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:41,532 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:41,554 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:41,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:41,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-11-12 03:35:41,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569647960] [2020-11-12 03:35:41,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:35:41,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:41,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:35:41,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:35:41,556 INFO L87 Difference]: Start difference. First operand 2427 states and 4139 transitions. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:43,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:43,184 INFO L93 Difference]: Finished difference Result 4159 states and 7404 transitions. [2020-11-12 03:35:43,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 03:35:43,185 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:35:43,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:43,190 INFO L225 Difference]: With dead ends: 4159 [2020-11-12 03:35:43,190 INFO L226 Difference]: Without dead ends: 3889 [2020-11-12 03:35:43,190 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=858, Invalid=2682, Unknown=0, NotChecked=0, Total=3540 [2020-11-12 03:35:43,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-11-12 03:35:43,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2452. [2020-11-12 03:35:43,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 2388 states have (on average 1.756281407035176) internal successors, (4194), 2451 states have internal predecessors, (4194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:43,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 4194 transitions. [2020-11-12 03:35:43,221 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 4194 transitions. Word has length 131 [2020-11-12 03:35:43,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:43,221 INFO L481 AbstractCegarLoop]: Abstraction has 2452 states and 4194 transitions. [2020-11-12 03:35:43,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:43,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 4194 transitions. [2020-11-12 03:35:43,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:35:43,223 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:43,223 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:43,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 218 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable222 [2020-11-12 03:35:43,424 INFO L429 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:43,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:43,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1111107409, now seen corresponding path program 213 times [2020-11-12 03:35:43,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:43,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516778237] [2020-11-12 03:35:43,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:44,109 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:44,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516778237] [2020-11-12 03:35:44,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691349150] [2020-11-12 03:35:44,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:44,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-11-12 03:35:44,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:35:44,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 40 conjunts are in the unsatisfiable core [2020-11-12 03:35:44,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:44,333 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:44,354 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:44,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:44,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-11-12 03:35:44,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921287004] [2020-11-12 03:35:44,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:35:44,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:44,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:35:44,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:35:44,355 INFO L87 Difference]: Start difference. First operand 2452 states and 4194 transitions. Second operand has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:46,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:46,247 INFO L93 Difference]: Finished difference Result 4159 states and 7384 transitions. [2020-11-12 03:35:46,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-11-12 03:35:46,248 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:35:46,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:46,253 INFO L225 Difference]: With dead ends: 4159 [2020-11-12 03:35:46,253 INFO L226 Difference]: Without dead ends: 3889 [2020-11-12 03:35:46,253 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=864, Invalid=2918, Unknown=0, NotChecked=0, Total=3782 [2020-11-12 03:35:46,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-11-12 03:35:46,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2477. [2020-11-12 03:35:46,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2413 states have (on average 1.7608785743887276) internal successors, (4249), 2476 states have internal predecessors, (4249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:46,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 4249 transitions. [2020-11-12 03:35:46,285 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 4249 transitions. Word has length 131 [2020-11-12 03:35:46,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:46,285 INFO L481 AbstractCegarLoop]: Abstraction has 2477 states and 4249 transitions. [2020-11-12 03:35:46,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:46,285 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 4249 transitions. [2020-11-12 03:35:46,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:35:46,287 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:46,287 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:46,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 219 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable223 [2020-11-12 03:35:46,488 INFO L429 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:46,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:46,489 INFO L82 PathProgramCache]: Analyzing trace with hash 189875823, now seen corresponding path program 214 times [2020-11-12 03:35:46,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:46,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539074151] [2020-11-12 03:35:46,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:47,122 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:47,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539074151] [2020-11-12 03:35:47,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227833857] [2020-11-12 03:35:47,123 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:47,216 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:35:47,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:35:47,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:35:47,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:47,292 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:47,319 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:47,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:47,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-11-12 03:35:47,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744128941] [2020-11-12 03:35:47,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:35:47,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:47,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:35:47,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:35:47,320 INFO L87 Difference]: Start difference. First operand 2477 states and 4249 transitions. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:49,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:49,020 INFO L93 Difference]: Finished difference Result 4159 states and 7364 transitions. [2020-11-12 03:35:49,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 03:35:49,022 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:35:49,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:49,027 INFO L225 Difference]: With dead ends: 4159 [2020-11-12 03:35:49,027 INFO L226 Difference]: Without dead ends: 3889 [2020-11-12 03:35:49,027 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 923 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=923, Invalid=2859, Unknown=0, NotChecked=0, Total=3782 [2020-11-12 03:35:49,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-11-12 03:35:49,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2502. [2020-11-12 03:35:49,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 2438 states have (on average 1.7653814602132896) internal successors, (4304), 2501 states have internal predecessors, (4304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:49,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 4304 transitions. [2020-11-12 03:35:49,059 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 4304 transitions. Word has length 131 [2020-11-12 03:35:49,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:49,059 INFO L481 AbstractCegarLoop]: Abstraction has 2502 states and 4304 transitions. [2020-11-12 03:35:49,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:49,059 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 4304 transitions. [2020-11-12 03:35:49,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:35:49,061 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:49,061 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:49,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 220 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable224 [2020-11-12 03:35:49,262 INFO L429 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:49,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:49,263 INFO L82 PathProgramCache]: Analyzing trace with hash -824314449, now seen corresponding path program 215 times [2020-11-12 03:35:49,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:49,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998617465] [2020-11-12 03:35:49,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:49,896 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:49,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998617465] [2020-11-12 03:35:49,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138639816] [2020-11-12 03:35:49,896 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:50,006 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-11-12 03:35:50,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:35:50,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:35:50,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:50,054 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:35:50,125 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:50,144 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:50,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:50,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-11-12 03:35:50,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821013235] [2020-11-12 03:35:50,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:35:50,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:50,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:35:50,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:35:50,146 INFO L87 Difference]: Start difference. First operand 2502 states and 4304 transitions. Second operand has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:52,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:52,251 INFO L93 Difference]: Finished difference Result 4159 states and 7344 transitions. [2020-11-12 03:35:52,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-11-12 03:35:52,253 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:35:52,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:52,257 INFO L225 Difference]: With dead ends: 4159 [2020-11-12 03:35:52,257 INFO L226 Difference]: Without dead ends: 3889 [2020-11-12 03:35:52,258 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=952, Invalid=3080, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 03:35:52,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-11-12 03:35:52,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2527. [2020-11-12 03:35:52,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2527 states, 2463 states have (on average 1.7697929354445798) internal successors, (4359), 2526 states have internal predecessors, (4359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:52,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2527 states to 2527 states and 4359 transitions. [2020-11-12 03:35:52,291 INFO L78 Accepts]: Start accepts. Automaton has 2527 states and 4359 transitions. Word has length 131 [2020-11-12 03:35:52,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:52,291 INFO L481 AbstractCegarLoop]: Abstraction has 2527 states and 4359 transitions. [2020-11-12 03:35:52,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:52,291 INFO L276 IsEmpty]: Start isEmpty. Operand 2527 states and 4359 transitions. [2020-11-12 03:35:52,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:35:52,293 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:52,293 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:52,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225,221 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:52,494 INFO L429 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:52,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:52,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1998438989, now seen corresponding path program 216 times [2020-11-12 03:35:52,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:52,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252858052] [2020-11-12 03:35:52,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:53,161 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:53,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252858052] [2020-11-12 03:35:53,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552747322] [2020-11-12 03:35:53,161 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:53,278 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-11-12 03:35:53,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:35:53,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:35:53,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:53,359 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:53,379 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:53,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:53,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-11-12 03:35:53,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204779688] [2020-11-12 03:35:53,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:35:53,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:53,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:35:53,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:35:53,380 INFO L87 Difference]: Start difference. First operand 2527 states and 4359 transitions. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:55,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:55,247 INFO L93 Difference]: Finished difference Result 4159 states and 7324 transitions. [2020-11-12 03:35:55,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 03:35:55,248 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:35:55,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:55,252 INFO L225 Difference]: With dead ends: 4159 [2020-11-12 03:35:55,253 INFO L226 Difference]: Without dead ends: 3889 [2020-11-12 03:35:55,253 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1004, Invalid=3028, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 03:35:55,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-11-12 03:35:55,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2552. [2020-11-12 03:35:55,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2552 states, 2488 states have (on average 1.7741157556270097) internal successors, (4414), 2551 states have internal predecessors, (4414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:55,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2552 states to 2552 states and 4414 transitions. [2020-11-12 03:35:55,285 INFO L78 Accepts]: Start accepts. Automaton has 2552 states and 4414 transitions. Word has length 131 [2020-11-12 03:35:55,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:55,285 INFO L481 AbstractCegarLoop]: Abstraction has 2552 states and 4414 transitions. [2020-11-12 03:35:55,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:55,286 INFO L276 IsEmpty]: Start isEmpty. Operand 2552 states and 4414 transitions. [2020-11-12 03:35:55,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:35:55,288 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:55,288 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:55,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 222 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable226 [2020-11-12 03:35:55,488 INFO L429 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:55,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:55,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1520468365, now seen corresponding path program 217 times [2020-11-12 03:35:55,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:55,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557961067] [2020-11-12 03:35:55,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:56,127 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:56,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557961067] [2020-11-12 03:35:56,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37296808] [2020-11-12 03:35:56,127 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:56,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:35:56,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:56,282 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:35:56,353 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:56,371 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:56,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:56,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-11-12 03:35:56,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165199932] [2020-11-12 03:35:56,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:35:56,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:56,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:35:56,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:35:56,373 INFO L87 Difference]: Start difference. First operand 2552 states and 4414 transitions. Second operand has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:58,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:58,685 INFO L93 Difference]: Finished difference Result 4159 states and 7304 transitions. [2020-11-12 03:35:58,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-11-12 03:35:58,687 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:35:58,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:58,691 INFO L225 Difference]: With dead ends: 4159 [2020-11-12 03:35:58,691 INFO L226 Difference]: Without dead ends: 3889 [2020-11-12 03:35:58,692 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1054 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1035, Invalid=3255, Unknown=0, NotChecked=0, Total=4290 [2020-11-12 03:35:58,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-11-12 03:35:58,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2577. [2020-11-12 03:35:58,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2577 states, 2513 states have (on average 1.7783525666534024) internal successors, (4469), 2576 states have internal predecessors, (4469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:58,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2577 states to 2577 states and 4469 transitions. [2020-11-12 03:35:58,728 INFO L78 Accepts]: Start accepts. Automaton has 2577 states and 4469 transitions. Word has length 131 [2020-11-12 03:35:58,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:58,728 INFO L481 AbstractCegarLoop]: Abstraction has 2577 states and 4469 transitions. [2020-11-12 03:35:58,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:58,729 INFO L276 IsEmpty]: Start isEmpty. Operand 2577 states and 4469 transitions. [2020-11-12 03:35:58,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:35:58,731 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:58,731 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:58,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227,223 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:58,932 INFO L429 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:58,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:58,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1627661397, now seen corresponding path program 218 times [2020-11-12 03:35:58,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:58,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316115636] [2020-11-12 03:35:58,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:59,547 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:59,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316115636] [2020-11-12 03:35:59,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890256395] [2020-11-12 03:35:59,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:59,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:35:59,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:35:59,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:35:59,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:59,716 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:59,734 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:59,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:59,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-11-12 03:35:59,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431838832] [2020-11-12 03:35:59,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:35:59,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:59,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:35:59,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:35:59,736 INFO L87 Difference]: Start difference. First operand 2577 states and 4469 transitions. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:01,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:01,731 INFO L93 Difference]: Finished difference Result 4159 states and 7284 transitions. [2020-11-12 03:36:01,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-12 03:36:01,732 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:36:01,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:01,737 INFO L225 Difference]: With dead ends: 4159 [2020-11-12 03:36:01,737 INFO L226 Difference]: Without dead ends: 3889 [2020-11-12 03:36:01,738 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1129 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1101, Invalid=3189, Unknown=0, NotChecked=0, Total=4290 [2020-11-12 03:36:01,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-11-12 03:36:01,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2602. [2020-11-12 03:36:01,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2602 states, 2538 states have (on average 1.7825059101654845) internal successors, (4524), 2601 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:01,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 4524 transitions. [2020-11-12 03:36:01,773 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 4524 transitions. Word has length 131 [2020-11-12 03:36:01,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:01,773 INFO L481 AbstractCegarLoop]: Abstraction has 2602 states and 4524 transitions. [2020-11-12 03:36:01,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:01,774 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 4524 transitions. [2020-11-12 03:36:01,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:36:01,776 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:01,776 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:01,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 224 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable228 [2020-11-12 03:36:01,978 INFO L429 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:01,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:01,978 INFO L82 PathProgramCache]: Analyzing trace with hash -339170581, now seen corresponding path program 219 times [2020-11-12 03:36:01,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:01,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473285975] [2020-11-12 03:36:01,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:02,628 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:02,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473285975] [2020-11-12 03:36:02,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182956513] [2020-11-12 03:36:02,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:02,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-11-12 03:36:02,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:36:02,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 34 conjunts are in the unsatisfiable core [2020-11-12 03:36:02,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:02,855 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:02,873 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:02,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:02,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-11-12 03:36:02,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880441210] [2020-11-12 03:36:02,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:36:02,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:02,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:36:02,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=639, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:36:02,875 INFO L87 Difference]: Start difference. First operand 2602 states and 4524 transitions. Second operand has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:05,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:05,317 INFO L93 Difference]: Finished difference Result 4159 states and 7264 transitions. [2020-11-12 03:36:05,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-11-12 03:36:05,318 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:36:05,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:05,323 INFO L225 Difference]: With dead ends: 4159 [2020-11-12 03:36:05,323 INFO L226 Difference]: Without dead ends: 3889 [2020-11-12 03:36:05,324 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1125 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1068, Invalid=3488, Unknown=0, NotChecked=0, Total=4556 [2020-11-12 03:36:05,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-11-12 03:36:05,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2627. [2020-11-12 03:36:05,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2627 states, 2563 states have (on average 1.7865782286383145) internal successors, (4579), 2626 states have internal predecessors, (4579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:05,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 4579 transitions. [2020-11-12 03:36:05,357 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 4579 transitions. Word has length 131 [2020-11-12 03:36:05,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:05,357 INFO L481 AbstractCegarLoop]: Abstraction has 2627 states and 4579 transitions. [2020-11-12 03:36:05,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:05,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 4579 transitions. [2020-11-12 03:36:05,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:36:05,359 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:05,360 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:05,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229,225 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:05,560 INFO L429 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:05,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:05,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1320521079, now seen corresponding path program 220 times [2020-11-12 03:36:05,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:05,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657707869] [2020-11-12 03:36:05,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:06,168 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:06,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657707869] [2020-11-12 03:36:06,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344965870] [2020-11-12 03:36:06,168 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:06,260 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:36:06,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:36:06,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:36:06,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:06,337 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:06,356 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:06,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:06,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-11-12 03:36:06,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970405867] [2020-11-12 03:36:06,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:36:06,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:06,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:36:06,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:36:06,357 INFO L87 Difference]: Start difference. First operand 2627 states and 4579 transitions. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:08,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:08,460 INFO L93 Difference]: Finished difference Result 4159 states and 7244 transitions. [2020-11-12 03:36:08,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-12 03:36:08,461 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:36:08,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:08,466 INFO L225 Difference]: With dead ends: 4159 [2020-11-12 03:36:08,467 INFO L226 Difference]: Without dead ends: 3889 [2020-11-12 03:36:08,467 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1238 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1214, Invalid=3342, Unknown=0, NotChecked=0, Total=4556 [2020-11-12 03:36:08,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-11-12 03:36:08,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2652. [2020-11-12 03:36:08,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2652 states, 2588 states have (on average 1.7905718701700155) internal successors, (4634), 2651 states have internal predecessors, (4634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:08,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 4634 transitions. [2020-11-12 03:36:08,500 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 4634 transitions. Word has length 131 [2020-11-12 03:36:08,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:08,500 INFO L481 AbstractCegarLoop]: Abstraction has 2652 states and 4634 transitions. [2020-11-12 03:36:08,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:08,500 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 4634 transitions. [2020-11-12 03:36:08,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:36:08,503 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:08,503 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:08,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230,226 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:08,703 INFO L429 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:08,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:08,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1984605751, now seen corresponding path program 221 times [2020-11-12 03:36:08,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:08,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104821233] [2020-11-12 03:36:08,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:09,319 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:09,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104821233] [2020-11-12 03:36:09,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913248926] [2020-11-12 03:36:09,320 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:09,417 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-11-12 03:36:09,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:36:09,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:36:09,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:09,465 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:36:09,539 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:09,556 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:09,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:09,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-11-12 03:36:09,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689383796] [2020-11-12 03:36:09,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:36:09,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:09,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:36:09,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:36:09,557 INFO L87 Difference]: Start difference. First operand 2652 states and 4634 transitions. Second operand has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:12,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:12,206 INFO L93 Difference]: Finished difference Result 4159 states and 7224 transitions. [2020-11-12 03:36:12,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-11-12 03:36:12,207 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:36:12,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:12,212 INFO L225 Difference]: With dead ends: 4159 [2020-11-12 03:36:12,212 INFO L226 Difference]: Without dead ends: 3889 [2020-11-12 03:36:12,212 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1274 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1249, Invalid=3581, Unknown=0, NotChecked=0, Total=4830 [2020-11-12 03:36:12,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-11-12 03:36:12,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2677. [2020-11-12 03:36:12,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2677 states, 2613 states have (on average 1.7944890929965558) internal successors, (4689), 2676 states have internal predecessors, (4689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:12,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2677 states to 2677 states and 4689 transitions. [2020-11-12 03:36:12,263 INFO L78 Accepts]: Start accepts. Automaton has 2677 states and 4689 transitions. Word has length 131 [2020-11-12 03:36:12,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:12,263 INFO L481 AbstractCegarLoop]: Abstraction has 2677 states and 4689 transitions. [2020-11-12 03:36:12,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:12,263 INFO L276 IsEmpty]: Start isEmpty. Operand 2677 states and 4689 transitions. [2020-11-12 03:36:12,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:36:12,265 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:12,265 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:12,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231,227 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:12,466 INFO L429 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:12,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:12,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1686083865, now seen corresponding path program 222 times [2020-11-12 03:36:12,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:12,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059135319] [2020-11-12 03:36:12,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:13,065 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:13,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059135319] [2020-11-12 03:36:13,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685421702] [2020-11-12 03:36:13,066 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:13,170 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-11-12 03:36:13,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:36:13,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:36:13,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:13,271 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:13,295 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:13,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:13,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-11-12 03:36:13,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899467438] [2020-11-12 03:36:13,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:36:13,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:13,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:36:13,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:36:13,297 INFO L87 Difference]: Start difference. First operand 2677 states and 4689 transitions. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:15,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:15,495 INFO L93 Difference]: Finished difference Result 4159 states and 7204 transitions. [2020-11-12 03:36:15,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-11-12 03:36:15,497 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:36:15,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:15,517 INFO L225 Difference]: With dead ends: 4159 [2020-11-12 03:36:15,518 INFO L226 Difference]: Without dead ends: 3889 [2020-11-12 03:36:15,518 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1351 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1343, Invalid=3487, Unknown=0, NotChecked=0, Total=4830 [2020-11-12 03:36:15,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-11-12 03:36:15,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2702. [2020-11-12 03:36:15,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2702 states, 2638 states have (on average 1.7983320697498104) internal successors, (4744), 2701 states have internal predecessors, (4744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:15,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2702 states to 2702 states and 4744 transitions. [2020-11-12 03:36:15,549 INFO L78 Accepts]: Start accepts. Automaton has 2702 states and 4744 transitions. Word has length 131 [2020-11-12 03:36:15,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:15,549 INFO L481 AbstractCegarLoop]: Abstraction has 2702 states and 4744 transitions. [2020-11-12 03:36:15,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:15,549 INFO L276 IsEmpty]: Start isEmpty. Operand 2702 states and 4744 transitions. [2020-11-12 03:36:15,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:36:15,552 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:15,552 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:15,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232,228 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:15,753 INFO L429 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:15,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:15,753 INFO L82 PathProgramCache]: Analyzing trace with hash 987584039, now seen corresponding path program 223 times [2020-11-12 03:36:15,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:15,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540796190] [2020-11-12 03:36:15,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:16,378 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:16,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540796190] [2020-11-12 03:36:16,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935273838] [2020-11-12 03:36:16,378 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:16,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:36:16,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:16,518 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:36:16,594 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:16,611 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:16,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:16,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-11-12 03:36:16,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307072884] [2020-11-12 03:36:16,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:36:16,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:16,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:36:16,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:36:16,612 INFO L87 Difference]: Start difference. First operand 2702 states and 4744 transitions. Second operand has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:19,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:19,508 INFO L93 Difference]: Finished difference Result 4204 states and 7262 transitions. [2020-11-12 03:36:19,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-11-12 03:36:19,509 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:36:19,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:19,513 INFO L225 Difference]: With dead ends: 4204 [2020-11-12 03:36:19,513 INFO L226 Difference]: Without dead ends: 3934 [2020-11-12 03:36:19,514 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1390 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1380, Invalid=3732, Unknown=0, NotChecked=0, Total=5112 [2020-11-12 03:36:19,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3934 states. [2020-11-12 03:36:19,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3934 to 2727. [2020-11-12 03:36:19,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2727 states, 2663 states have (on average 1.8043559894855425) internal successors, (4805), 2726 states have internal predecessors, (4805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:19,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 4805 transitions. [2020-11-12 03:36:19,547 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 4805 transitions. Word has length 131 [2020-11-12 03:36:19,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:19,547 INFO L481 AbstractCegarLoop]: Abstraction has 2727 states and 4805 transitions. [2020-11-12 03:36:19,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:19,547 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 4805 transitions. [2020-11-12 03:36:19,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:36:19,549 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:19,549 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:19,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 229 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable233 [2020-11-12 03:36:19,750 INFO L429 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:19,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:19,751 INFO L82 PathProgramCache]: Analyzing trace with hash 2121674203, now seen corresponding path program 224 times [2020-11-12 03:36:19,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:19,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972131182] [2020-11-12 03:36:19,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:20,351 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:20,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972131182] [2020-11-12 03:36:20,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504753559] [2020-11-12 03:36:20,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:20,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:36:20,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:36:20,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:36:20,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:20,525 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:20,546 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:20,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:20,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-11-12 03:36:20,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591986678] [2020-11-12 03:36:20,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:36:20,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:20,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:36:20,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:36:20,548 INFO L87 Difference]: Start difference. First operand 2727 states and 4805 transitions. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:22,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:22,988 INFO L93 Difference]: Finished difference Result 5266 states and 8674 transitions. [2020-11-12 03:36:22,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-11-12 03:36:22,990 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:36:22,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:22,994 INFO L225 Difference]: With dead ends: 5266 [2020-11-12 03:36:22,995 INFO L226 Difference]: Without dead ends: 4981 [2020-11-12 03:36:22,995 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1467 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1489, Invalid=3623, Unknown=0, NotChecked=0, Total=5112 [2020-11-12 03:36:23,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4981 states. [2020-11-12 03:36:23,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4981 to 2812. [2020-11-12 03:36:23,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2812 states, 2748 states have (on average 1.8205967976710336) internal successors, (5003), 2811 states have internal predecessors, (5003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:23,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 5003 transitions. [2020-11-12 03:36:23,034 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 5003 transitions. Word has length 131 [2020-11-12 03:36:23,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:23,034 INFO L481 AbstractCegarLoop]: Abstraction has 2812 states and 5003 transitions. [2020-11-12 03:36:23,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:23,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 5003 transitions. [2020-11-12 03:36:23,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:36:23,036 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:23,036 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:23,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 230 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable234 [2020-11-12 03:36:23,237 INFO L429 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:23,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:23,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1333315901, now seen corresponding path program 225 times [2020-11-12 03:36:23,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:23,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414921629] [2020-11-12 03:36:23,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:23,846 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:23,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414921629] [2020-11-12 03:36:23,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123227090] [2020-11-12 03:36:23,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:23,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-11-12 03:36:23,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:36:23,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:36:23,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:24,066 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:24,082 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:24,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:24,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-11-12 03:36:24,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030885375] [2020-11-12 03:36:24,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:36:24,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:24,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:36:24,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:36:24,083 INFO L87 Difference]: Start difference. First operand 2812 states and 5003 transitions. Second operand has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:27,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:27,131 INFO L93 Difference]: Finished difference Result 4646 states and 8027 transitions. [2020-11-12 03:36:27,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-11-12 03:36:27,132 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:36:27,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:27,137 INFO L225 Difference]: With dead ends: 4646 [2020-11-12 03:36:27,137 INFO L226 Difference]: Without dead ends: 4074 [2020-11-12 03:36:27,137 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1567 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1436, Invalid=4416, Unknown=0, NotChecked=0, Total=5852 [2020-11-12 03:36:27,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4074 states. [2020-11-12 03:36:27,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4074 to 2707. [2020-11-12 03:36:27,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2707 states, 2643 states have (on average 1.8142262580401058) internal successors, (4795), 2706 states have internal predecessors, (4795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:27,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2707 states to 2707 states and 4795 transitions. [2020-11-12 03:36:27,170 INFO L78 Accepts]: Start accepts. Automaton has 2707 states and 4795 transitions. Word has length 131 [2020-11-12 03:36:27,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:27,170 INFO L481 AbstractCegarLoop]: Abstraction has 2707 states and 4795 transitions. [2020-11-12 03:36:27,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:27,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2707 states and 4795 transitions. [2020-11-12 03:36:27,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:36:27,172 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:27,172 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:27,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 231 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable235 [2020-11-12 03:36:27,373 INFO L429 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:27,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:27,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1067809773, now seen corresponding path program 226 times [2020-11-12 03:36:27,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:27,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586543026] [2020-11-12 03:36:27,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:28,161 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:28,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586543026] [2020-11-12 03:36:28,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568712384] [2020-11-12 03:36:28,161 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:28,254 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:36:28,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:36:28,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:36:28,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:28,339 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:28,350 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:28,396 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:28,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:28,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-11-12 03:36:28,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12982201] [2020-11-12 03:36:28,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:36:28,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:28,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:36:28,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=676, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:36:28,397 INFO L87 Difference]: Start difference. First operand 2707 states and 4795 transitions. Second operand has 30 states, 30 states have (on average 5.233333333333333) internal successors, (157), 30 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:30,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:30,049 INFO L93 Difference]: Finished difference Result 4015 states and 7139 transitions. [2020-11-12 03:36:30,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-12 03:36:30,050 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.233333333333333) internal successors, (157), 30 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:36:30,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:30,055 INFO L225 Difference]: With dead ends: 4015 [2020-11-12 03:36:30,055 INFO L226 Difference]: Without dead ends: 3681 [2020-11-12 03:36:30,056 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=885, Invalid=2421, Unknown=0, NotChecked=0, Total=3306 [2020-11-12 03:36:30,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2020-11-12 03:36:30,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 2782. [2020-11-12 03:36:30,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2782 states, 2718 states have (on average 1.8193524650478292) internal successors, (4945), 2781 states have internal predecessors, (4945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:30,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2782 states to 2782 states and 4945 transitions. [2020-11-12 03:36:30,088 INFO L78 Accepts]: Start accepts. Automaton has 2782 states and 4945 transitions. Word has length 136 [2020-11-12 03:36:30,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:30,088 INFO L481 AbstractCegarLoop]: Abstraction has 2782 states and 4945 transitions. [2020-11-12 03:36:30,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.233333333333333) internal successors, (157), 30 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:30,088 INFO L276 IsEmpty]: Start isEmpty. Operand 2782 states and 4945 transitions. [2020-11-12 03:36:30,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:36:30,090 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:30,090 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:30,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236,232 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:30,291 INFO L429 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:30,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:30,292 INFO L82 PathProgramCache]: Analyzing trace with hash -884919499, now seen corresponding path program 227 times [2020-11-12 03:36:30,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:30,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168512062] [2020-11-12 03:36:30,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:31,098 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:31,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168512062] [2020-11-12 03:36:31,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093235951] [2020-11-12 03:36:31,099 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:31,198 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-11-12 03:36:31,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:36:31,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:36:31,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:31,219 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:31,264 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:31,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:31,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-11-12 03:36:31,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964070498] [2020-11-12 03:36:31,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:36:31,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:31,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:36:31,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:36:31,265 INFO L87 Difference]: Start difference. First operand 2782 states and 4945 transitions. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:32,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:32,595 INFO L93 Difference]: Finished difference Result 4809 states and 8920 transitions. [2020-11-12 03:36:32,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-12 03:36:32,597 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:36:32,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:32,603 INFO L225 Difference]: With dead ends: 4809 [2020-11-12 03:36:32,603 INFO L226 Difference]: Without dead ends: 4539 [2020-11-12 03:36:32,603 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=730, Invalid=1922, Unknown=0, NotChecked=0, Total=2652 [2020-11-12 03:36:32,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4539 states. [2020-11-12 03:36:32,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4539 to 2842. [2020-11-12 03:36:32,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2842 states, 2778 states have (on average 1.810655147588193) internal successors, (5030), 2841 states have internal predecessors, (5030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:32,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2842 states to 2842 states and 5030 transitions. [2020-11-12 03:36:32,641 INFO L78 Accepts]: Start accepts. Automaton has 2842 states and 5030 transitions. Word has length 136 [2020-11-12 03:36:32,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:32,641 INFO L481 AbstractCegarLoop]: Abstraction has 2842 states and 5030 transitions. [2020-11-12 03:36:32,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:32,642 INFO L276 IsEmpty]: Start isEmpty. Operand 2842 states and 5030 transitions. [2020-11-12 03:36:32,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:36:32,644 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:32,644 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:32,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 233 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable237 [2020-11-12 03:36:32,845 INFO L429 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:32,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:32,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1358593867, now seen corresponding path program 228 times [2020-11-12 03:36:32,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:32,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418715778] [2020-11-12 03:36:32,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:33,705 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:33,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418715778] [2020-11-12 03:36:33,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103073013] [2020-11-12 03:36:33,705 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:33,808 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-11-12 03:36:33,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:36:33,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:36:33,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:33,859 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:36:33,882 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:33,908 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:33,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:33,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-12 03:36:33,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701813527] [2020-11-12 03:36:33,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:36:33,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:33,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:36:33,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:36:33,910 INFO L87 Difference]: Start difference. First operand 2842 states and 5030 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:35,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:35,504 INFO L93 Difference]: Finished difference Result 4739 states and 8755 transitions. [2020-11-12 03:36:35,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-12 03:36:35,505 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:36:35,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:35,510 INFO L225 Difference]: With dead ends: 4739 [2020-11-12 03:36:35,511 INFO L226 Difference]: Without dead ends: 4469 [2020-11-12 03:36:35,511 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=801, Invalid=2279, Unknown=0, NotChecked=0, Total=3080 [2020-11-12 03:36:35,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4469 states. [2020-11-12 03:36:35,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4469 to 2867. [2020-11-12 03:36:35,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2867 states, 2803 states have (on average 1.8034249018908313) internal successors, (5055), 2866 states have internal predecessors, (5055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:35,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2867 states to 2867 states and 5055 transitions. [2020-11-12 03:36:35,547 INFO L78 Accepts]: Start accepts. Automaton has 2867 states and 5055 transitions. Word has length 136 [2020-11-12 03:36:35,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:35,547 INFO L481 AbstractCegarLoop]: Abstraction has 2867 states and 5055 transitions. [2020-11-12 03:36:35,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:35,548 INFO L276 IsEmpty]: Start isEmpty. Operand 2867 states and 5055 transitions. [2020-11-12 03:36:35,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:36:35,550 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:35,550 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:35,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238,234 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:35,751 INFO L429 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:35,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:35,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1295197773, now seen corresponding path program 229 times [2020-11-12 03:36:35,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:35,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405369663] [2020-11-12 03:36:35,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:35,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:36,519 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:36,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405369663] [2020-11-12 03:36:36,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645276380] [2020-11-12 03:36:36,520 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:36,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:36,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:36:36,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:36,637 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:36,663 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:36,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:36,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-11-12 03:36:36,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779220517] [2020-11-12 03:36:36,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:36:36,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:36,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:36:36,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:36:36,664 INFO L87 Difference]: Start difference. First operand 2867 states and 5055 transitions. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:38,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:38,164 INFO L93 Difference]: Finished difference Result 4739 states and 8730 transitions. [2020-11-12 03:36:38,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-12 03:36:38,166 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:36:38,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:38,171 INFO L225 Difference]: With dead ends: 4739 [2020-11-12 03:36:38,171 INFO L226 Difference]: Without dead ends: 4469 [2020-11-12 03:36:38,172 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=733, Invalid=2129, Unknown=0, NotChecked=0, Total=2862 [2020-11-12 03:36:38,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4469 states. [2020-11-12 03:36:38,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4469 to 2892. [2020-11-12 03:36:38,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:38,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:36:38,209 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:36:38,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:38,210 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:36:38,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:38,210 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:36:38,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:36:38,212 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:38,212 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:38,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 235 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable239 [2020-11-12 03:36:38,413 INFO L429 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:38,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:38,413 INFO L82 PathProgramCache]: Analyzing trace with hash 976197005, now seen corresponding path program 230 times [2020-11-12 03:36:38,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:38,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571647722] [2020-11-12 03:36:38,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:39,237 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:39,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571647722] [2020-11-12 03:36:39,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365334889] [2020-11-12 03:36:39,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:39,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:36:39,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:36:39,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:36:39,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:39,382 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:36:39,403 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:39,429 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:39,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:39,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-12 03:36:39,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916149560] [2020-11-12 03:36:39,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:36:39,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:39,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:36:39,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:36:39,430 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:41,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:41,213 INFO L93 Difference]: Finished difference Result 4714 states and 8655 transitions. [2020-11-12 03:36:41,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-12 03:36:41,214 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:36:41,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:41,220 INFO L225 Difference]: With dead ends: 4714 [2020-11-12 03:36:41,220 INFO L226 Difference]: Without dead ends: 4444 [2020-11-12 03:36:41,220 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=812, Invalid=2494, Unknown=0, NotChecked=0, Total=3306 [2020-11-12 03:36:41,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4444 states. [2020-11-12 03:36:41,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4444 to 2892. [2020-11-12 03:36:41,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:41,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:36:41,258 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:36:41,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:41,258 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:36:41,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:41,258 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:36:41,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:36:41,260 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:41,260 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:41,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240,236 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:41,461 INFO L429 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:41,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:41,462 INFO L82 PathProgramCache]: Analyzing trace with hash -460461013, now seen corresponding path program 231 times [2020-11-12 03:36:41,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:41,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488568842] [2020-11-12 03:36:41,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:41,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:42,203 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:42,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488568842] [2020-11-12 03:36:42,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008015334] [2020-11-12 03:36:42,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:42,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-11-12 03:36:42,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:36:42,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:36:42,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:42,333 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:42,356 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:42,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:42,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-11-12 03:36:42,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201814038] [2020-11-12 03:36:42,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:36:42,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:42,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:36:42,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:36:42,358 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:44,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:44,003 INFO L93 Difference]: Finished difference Result 4664 states and 8555 transitions. [2020-11-12 03:36:44,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 03:36:44,005 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:36:44,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:44,009 INFO L225 Difference]: With dead ends: 4664 [2020-11-12 03:36:44,009 INFO L226 Difference]: Without dead ends: 4394 [2020-11-12 03:36:44,010 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=752, Invalid=2328, Unknown=0, NotChecked=0, Total=3080 [2020-11-12 03:36:44,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4394 states. [2020-11-12 03:36:44,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4394 to 2892. [2020-11-12 03:36:44,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:44,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:36:44,045 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:36:44,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:44,046 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:36:44,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:44,046 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:36:44,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:36:44,048 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:44,048 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:44,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241,237 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:44,249 INFO L429 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:44,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:44,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1177578347, now seen corresponding path program 232 times [2020-11-12 03:36:44,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:44,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633929973] [2020-11-12 03:36:44,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:45,040 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:45,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633929973] [2020-11-12 03:36:45,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135321973] [2020-11-12 03:36:45,041 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:45,134 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:36:45,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:36:45,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:36:45,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:45,185 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:36:45,210 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:45,243 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:45,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:45,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-12 03:36:45,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705504413] [2020-11-12 03:36:45,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:36:45,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:45,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:36:45,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=631, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:36:45,244 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:47,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:47,248 INFO L93 Difference]: Finished difference Result 4614 states and 8455 transitions. [2020-11-12 03:36:47,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-12 03:36:47,249 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:36:47,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:47,254 INFO L225 Difference]: With dead ends: 4614 [2020-11-12 03:36:47,255 INFO L226 Difference]: Without dead ends: 4344 [2020-11-12 03:36:47,255 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=839, Invalid=2701, Unknown=0, NotChecked=0, Total=3540 [2020-11-12 03:36:47,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4344 states. [2020-11-12 03:36:47,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4344 to 2892. [2020-11-12 03:36:47,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:47,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:36:47,291 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:36:47,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:47,291 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:36:47,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:47,291 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:36:47,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:36:47,294 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:47,294 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:47,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242,238 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:47,495 INFO L429 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:47,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:47,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1653682295, now seen corresponding path program 233 times [2020-11-12 03:36:47,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:47,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995895936] [2020-11-12 03:36:47,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:48,231 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:48,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995895936] [2020-11-12 03:36:48,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547969210] [2020-11-12 03:36:48,232 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:48,330 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-11-12 03:36:48,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:36:48,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:36:48,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:48,357 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:48,381 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:48,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:48,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-11-12 03:36:48,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188569403] [2020-11-12 03:36:48,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:36:48,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:48,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:36:48,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:36:48,382 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:50,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:50,185 INFO L93 Difference]: Finished difference Result 4564 states and 8355 transitions. [2020-11-12 03:36:50,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 03:36:50,186 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:36:50,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:50,191 INFO L225 Difference]: With dead ends: 4564 [2020-11-12 03:36:50,192 INFO L226 Difference]: Without dead ends: 4294 [2020-11-12 03:36:50,192 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=787, Invalid=2519, Unknown=0, NotChecked=0, Total=3306 [2020-11-12 03:36:50,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4294 states. [2020-11-12 03:36:50,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4294 to 2892. [2020-11-12 03:36:50,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:50,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:36:50,228 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:36:50,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:50,228 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:36:50,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:50,229 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:36:50,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:36:50,231 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:50,231 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:50,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 239 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable243 [2020-11-12 03:36:50,432 INFO L429 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:50,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:50,432 INFO L82 PathProgramCache]: Analyzing trace with hash -653566263, now seen corresponding path program 234 times [2020-11-12 03:36:50,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:50,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428737064] [2020-11-12 03:36:50,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:51,203 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:51,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428737064] [2020-11-12 03:36:51,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996571610] [2020-11-12 03:36:51,203 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:51,305 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-11-12 03:36:51,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:36:51,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:36:51,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:51,355 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:36:51,381 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:51,408 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:51,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:51,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-12 03:36:51,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232837675] [2020-11-12 03:36:51,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:36:51,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:51,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:36:51,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:36:51,410 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:53,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:53,575 INFO L93 Difference]: Finished difference Result 4514 states and 8255 transitions. [2020-11-12 03:36:53,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-11-12 03:36:53,576 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:36:53,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:53,581 INFO L225 Difference]: With dead ends: 4514 [2020-11-12 03:36:53,581 INFO L226 Difference]: Without dead ends: 4244 [2020-11-12 03:36:53,582 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=882, Invalid=2900, Unknown=0, NotChecked=0, Total=3782 [2020-11-12 03:36:53,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4244 states. [2020-11-12 03:36:53,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4244 to 2892. [2020-11-12 03:36:53,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:53,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:36:53,617 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:36:53,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:53,618 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:36:53,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:53,618 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:36:53,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:36:53,620 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:53,620 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:53,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 240 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable244 [2020-11-12 03:36:53,821 INFO L429 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:53,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:53,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1781223321, now seen corresponding path program 235 times [2020-11-12 03:36:53,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:53,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495863744] [2020-11-12 03:36:53,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:54,537 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:54,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495863744] [2020-11-12 03:36:54,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609996535] [2020-11-12 03:36:54,537 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:54,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:36:54,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:54,664 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:54,685 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:54,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:54,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-11-12 03:36:54,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356983459] [2020-11-12 03:36:54,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:36:54,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:54,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:36:54,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:36:54,687 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:56,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:56,608 INFO L93 Difference]: Finished difference Result 4464 states and 8155 transitions. [2020-11-12 03:36:56,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 03:36:56,610 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:36:56,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:56,616 INFO L225 Difference]: With dead ends: 4464 [2020-11-12 03:36:56,616 INFO L226 Difference]: Without dead ends: 4194 [2020-11-12 03:36:56,616 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=838, Invalid=2702, Unknown=0, NotChecked=0, Total=3540 [2020-11-12 03:36:56,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4194 states. [2020-11-12 03:36:56,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4194 to 2892. [2020-11-12 03:36:56,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:56,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:36:56,653 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:36:56,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:56,653 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:36:56,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:56,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:36:56,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:36:56,655 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:56,656 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:56,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 241 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable245 [2020-11-12 03:36:56,856 INFO L429 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:56,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:56,857 INFO L82 PathProgramCache]: Analyzing trace with hash -373338201, now seen corresponding path program 236 times [2020-11-12 03:36:56,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:56,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138460553] [2020-11-12 03:36:56,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:57,587 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:57,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138460553] [2020-11-12 03:36:57,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337890465] [2020-11-12 03:36:57,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:57,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:36:57,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:36:57,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:36:57,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:57,745 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:36:57,781 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:57,809 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:57,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:57,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-12 03:36:57,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995688865] [2020-11-12 03:36:57,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:36:57,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:57,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:36:57,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:36:57,810 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:00,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:00,165 INFO L93 Difference]: Finished difference Result 4414 states and 8055 transitions. [2020-11-12 03:37:00,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-11-12 03:37:00,167 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:37:00,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:00,172 INFO L225 Difference]: With dead ends: 4414 [2020-11-12 03:37:00,172 INFO L226 Difference]: Without dead ends: 4144 [2020-11-12 03:37:00,172 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=941, Invalid=3091, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 03:37:00,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4144 states. [2020-11-12 03:37:00,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4144 to 2892. [2020-11-12 03:37:00,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:00,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:37:00,208 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:37:00,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:00,208 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:37:00,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:00,208 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:37:00,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:37:00,211 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:00,211 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:00,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 242 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable246 [2020-11-12 03:37:00,411 INFO L429 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:00,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:00,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1294569787, now seen corresponding path program 237 times [2020-11-12 03:37:00,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:00,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912008515] [2020-11-12 03:37:00,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:01,099 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:01,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912008515] [2020-11-12 03:37:01,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677674598] [2020-11-12 03:37:01,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:01,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-11-12 03:37:01,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:37:01,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 39 conjunts are in the unsatisfiable core [2020-11-12 03:37:01,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:01,238 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:01,259 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:01,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:01,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-11-12 03:37:01,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812980236] [2020-11-12 03:37:01,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:37:01,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:01,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:37:01,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:37:01,260 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:03,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:03,311 INFO L93 Difference]: Finished difference Result 4364 states and 7955 transitions. [2020-11-12 03:37:03,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 03:37:03,312 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:37:03,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:03,317 INFO L225 Difference]: With dead ends: 4364 [2020-11-12 03:37:03,317 INFO L226 Difference]: Without dead ends: 4094 [2020-11-12 03:37:03,317 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=905, Invalid=2877, Unknown=0, NotChecked=0, Total=3782 [2020-11-12 03:37:03,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4094 states. [2020-11-12 03:37:03,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4094 to 2892. [2020-11-12 03:37:03,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:03,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:37:03,353 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:37:03,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:03,353 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:37:03,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:03,354 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:37:03,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:37:03,356 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:03,356 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:03,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 243 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable247 [2020-11-12 03:37:03,557 INFO L429 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:03,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:03,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1986207237, now seen corresponding path program 238 times [2020-11-12 03:37:03,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:03,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894507786] [2020-11-12 03:37:03,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:04,263 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:04,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894507786] [2020-11-12 03:37:04,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930416265] [2020-11-12 03:37:04,264 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:04,357 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:37:04,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:37:04,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:37:04,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:04,409 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:37:04,443 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:04,467 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:04,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:04,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-12 03:37:04,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488681310] [2020-11-12 03:37:04,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:37:04,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:04,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:37:04,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:37:04,468 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:07,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:07,047 INFO L93 Difference]: Finished difference Result 4314 states and 7855 transitions. [2020-11-12 03:37:07,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-11-12 03:37:07,049 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:37:07,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:07,054 INFO L225 Difference]: With dead ends: 4314 [2020-11-12 03:37:07,054 INFO L226 Difference]: Without dead ends: 4044 [2020-11-12 03:37:07,055 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1016, Invalid=3274, Unknown=0, NotChecked=0, Total=4290 [2020-11-12 03:37:07,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4044 states. [2020-11-12 03:37:07,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4044 to 2892. [2020-11-12 03:37:07,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:07,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:37:07,089 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:37:07,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:07,090 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:37:07,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:07,090 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:37:07,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:37:07,092 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:07,092 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:07,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248,244 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:07,293 INFO L429 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:07,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:07,293 INFO L82 PathProgramCache]: Analyzing trace with hash 513993379, now seen corresponding path program 239 times [2020-11-12 03:37:07,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:07,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570831002] [2020-11-12 03:37:07,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:07,961 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:07,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570831002] [2020-11-12 03:37:07,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360719046] [2020-11-12 03:37:07,962 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:08,062 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-11-12 03:37:08,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:37:08,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:37:08,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:08,100 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:08,140 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:08,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:08,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-11-12 03:37:08,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572642280] [2020-11-12 03:37:08,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:37:08,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:08,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:37:08,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:37:08,141 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:10,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:10,277 INFO L93 Difference]: Finished difference Result 4264 states and 7755 transitions. [2020-11-12 03:37:10,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 03:37:10,279 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:37:10,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:10,283 INFO L225 Difference]: With dead ends: 4264 [2020-11-12 03:37:10,284 INFO L226 Difference]: Without dead ends: 3994 [2020-11-12 03:37:10,284 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 957 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=988, Invalid=3044, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 03:37:10,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2020-11-12 03:37:10,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 2892. [2020-11-12 03:37:10,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:10,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:37:10,319 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:37:10,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:10,319 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:37:10,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:10,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:37:10,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:37:10,322 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:10,322 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:10,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 245 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable249 [2020-11-12 03:37:10,524 INFO L429 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:10,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:10,524 INFO L82 PathProgramCache]: Analyzing trace with hash 36022755, now seen corresponding path program 240 times [2020-11-12 03:37:10,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:10,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037841679] [2020-11-12 03:37:10,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:11,216 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:11,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037841679] [2020-11-12 03:37:11,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421318171] [2020-11-12 03:37:11,216 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:11,320 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-11-12 03:37:11,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:37:11,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 37 conjunts are in the unsatisfiable core [2020-11-12 03:37:11,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:11,428 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:11,448 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:11,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:11,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-12 03:37:11,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173876074] [2020-11-12 03:37:11,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:37:11,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:11,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:37:11,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=643, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:37:11,449 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:14,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:14,044 INFO L93 Difference]: Finished difference Result 4214 states and 7655 transitions. [2020-11-12 03:37:14,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-11-12 03:37:14,045 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:37:14,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:14,050 INFO L225 Difference]: With dead ends: 4214 [2020-11-12 03:37:14,050 INFO L226 Difference]: Without dead ends: 3944 [2020-11-12 03:37:14,051 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 979 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=967, Invalid=3323, Unknown=0, NotChecked=0, Total=4290 [2020-11-12 03:37:14,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3944 states. [2020-11-12 03:37:14,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3944 to 2892. [2020-11-12 03:37:14,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:14,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:37:14,085 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:37:14,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:14,085 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:37:14,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:14,086 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:37:14,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:37:14,088 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:14,088 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:14,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250,246 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:14,289 INFO L429 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:14,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:14,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1182860289, now seen corresponding path program 241 times [2020-11-12 03:37:14,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:14,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232550298] [2020-11-12 03:37:14,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:14,960 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:14,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232550298] [2020-11-12 03:37:14,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545749562] [2020-11-12 03:37:14,961 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:15,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:37:15,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:15,097 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:15,116 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:15,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:15,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-11-12 03:37:15,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699748237] [2020-11-12 03:37:15,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:37:15,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:15,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:37:15,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:37:15,117 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:17,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:17,472 INFO L93 Difference]: Finished difference Result 4164 states and 7555 transitions. [2020-11-12 03:37:17,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-12 03:37:17,473 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:37:17,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:17,479 INFO L225 Difference]: With dead ends: 4164 [2020-11-12 03:37:17,479 INFO L226 Difference]: Without dead ends: 3894 [2020-11-12 03:37:17,479 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1052 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1087, Invalid=3203, Unknown=0, NotChecked=0, Total=4290 [2020-11-12 03:37:17,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3894 states. [2020-11-12 03:37:17,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3894 to 2892. [2020-11-12 03:37:17,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:17,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:37:17,513 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:37:17,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:17,514 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:37:17,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:17,514 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:37:17,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:37:17,516 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:17,516 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:17,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251,247 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:17,717 INFO L429 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:17,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:17,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1823616191, now seen corresponding path program 242 times [2020-11-12 03:37:17,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:17,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052837207] [2020-11-12 03:37:17,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:18,411 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:18,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052837207] [2020-11-12 03:37:18,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455431105] [2020-11-12 03:37:18,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:18,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:37:18,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:37:18,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:37:18,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:18,563 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:37:18,595 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:18,614 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:18,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:18,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-12 03:37:18,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698649977] [2020-11-12 03:37:18,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:37:18,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:18,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:37:18,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:37:18,615 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:21,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:21,541 INFO L93 Difference]: Finished difference Result 4114 states and 7455 transitions. [2020-11-12 03:37:21,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-11-12 03:37:21,542 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:37:21,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:21,547 INFO L225 Difference]: With dead ends: 4114 [2020-11-12 03:37:21,547 INFO L226 Difference]: Without dead ends: 3844 [2020-11-12 03:37:21,548 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1214, Invalid=3616, Unknown=0, NotChecked=0, Total=4830 [2020-11-12 03:37:21,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3844 states. [2020-11-12 03:37:21,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3844 to 2892. [2020-11-12 03:37:21,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:21,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:37:21,603 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:37:21,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:21,603 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:37:21,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:21,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:37:21,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:37:21,605 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:21,606 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:21,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252,248 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:21,806 INFO L429 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:21,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:21,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1490000607, now seen corresponding path program 243 times [2020-11-12 03:37:21,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:21,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554893898] [2020-11-12 03:37:21,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:21,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:22,470 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:22,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554893898] [2020-11-12 03:37:22,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111795780] [2020-11-12 03:37:22,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:22,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-11-12 03:37:22,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:37:22,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-12 03:37:22,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:22,617 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:22,635 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:22,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:22,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-11-12 03:37:22,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246293877] [2020-11-12 03:37:22,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:37:22,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:22,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:37:22,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:37:22,636 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:25,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:25,130 INFO L93 Difference]: Finished difference Result 4064 states and 7355 transitions. [2020-11-12 03:37:25,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-12 03:37:25,132 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:37:25,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:25,137 INFO L225 Difference]: With dead ends: 4064 [2020-11-12 03:37:25,137 INFO L226 Difference]: Without dead ends: 3794 [2020-11-12 03:37:25,137 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1151 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1202, Invalid=3354, Unknown=0, NotChecked=0, Total=4556 [2020-11-12 03:37:25,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3794 states. [2020-11-12 03:37:25,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3794 to 2892. [2020-11-12 03:37:25,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:25,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:37:25,170 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:37:25,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:25,170 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:37:25,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:25,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:37:25,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:37:25,173 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:25,173 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:25,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253,249 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:25,374 INFO L429 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:25,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:25,375 INFO L82 PathProgramCache]: Analyzing trace with hash 825915935, now seen corresponding path program 244 times [2020-11-12 03:37:25,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:25,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251593971] [2020-11-12 03:37:25,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:26,083 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:26,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251593971] [2020-11-12 03:37:26,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464752950] [2020-11-12 03:37:26,083 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:26,177 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:37:26,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:37:26,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:37:26,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:26,232 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:37:26,267 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:26,286 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:26,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:26,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-12 03:37:26,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551288596] [2020-11-12 03:37:26,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:37:26,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:26,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:37:26,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=625, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:37:26,288 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:29,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:29,391 INFO L93 Difference]: Finished difference Result 4014 states and 7255 transitions. [2020-11-12 03:37:29,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-11-12 03:37:29,392 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:37:29,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:29,397 INFO L225 Difference]: With dead ends: 4014 [2020-11-12 03:37:29,398 INFO L226 Difference]: Without dead ends: 3744 [2020-11-12 03:37:29,398 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1289 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1337, Invalid=3775, Unknown=0, NotChecked=0, Total=5112 [2020-11-12 03:37:29,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3744 states. [2020-11-12 03:37:29,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3744 to 2892. [2020-11-12 03:37:29,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:29,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:37:29,430 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:37:29,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:29,431 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:37:29,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:29,431 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:37:29,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:37:29,434 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:29,434 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:29,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 250 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable254 [2020-11-12 03:37:29,640 INFO L429 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:29,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:29,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1124437821, now seen corresponding path program 245 times [2020-11-12 03:37:29,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:29,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675789802] [2020-11-12 03:37:29,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:30,302 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:30,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675789802] [2020-11-12 03:37:30,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482397327] [2020-11-12 03:37:30,303 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:30,404 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-11-12 03:37:30,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:37:30,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:37:30,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:30,450 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:30,466 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:30,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:30,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-11-12 03:37:30,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210041950] [2020-11-12 03:37:30,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:37:30,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:30,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:37:30,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:37:30,468 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:33,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:33,184 INFO L93 Difference]: Finished difference Result 3964 states and 7155 transitions. [2020-11-12 03:37:33,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-11-12 03:37:33,187 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:37:33,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:33,192 INFO L225 Difference]: With dead ends: 3964 [2020-11-12 03:37:33,192 INFO L226 Difference]: Without dead ends: 3694 [2020-11-12 03:37:33,193 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1254 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1333, Invalid=3497, Unknown=0, NotChecked=0, Total=4830 [2020-11-12 03:37:33,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3694 states. [2020-11-12 03:37:33,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3694 to 2892. [2020-11-12 03:37:33,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:33,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:37:33,233 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:37:33,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:33,233 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:37:33,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:33,234 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:37:33,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:37:33,236 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:33,237 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:33,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 251 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable255 [2020-11-12 03:37:33,446 INFO L429 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:33,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:33,446 INFO L82 PathProgramCache]: Analyzing trace with hash -496861571, now seen corresponding path program 246 times [2020-11-12 03:37:33,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:33,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377939015] [2020-11-12 03:37:33,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:34,124 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:34,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377939015] [2020-11-12 03:37:34,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364510841] [2020-11-12 03:37:34,124 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:34,229 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-11-12 03:37:34,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:37:34,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:37:34,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:34,328 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:34,345 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:34,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:34,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-12 03:37:34,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245213884] [2020-11-12 03:37:34,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:37:34,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:34,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:37:34,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=610, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:37:34,347 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:37,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:37,528 INFO L93 Difference]: Finished difference Result 3979 states and 7172 transitions. [2020-11-12 03:37:37,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-11-12 03:37:37,530 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:37:37,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:37,533 INFO L225 Difference]: With dead ends: 3979 [2020-11-12 03:37:37,533 INFO L226 Difference]: Without dead ends: 3709 [2020-11-12 03:37:37,534 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1267 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1255, Invalid=3857, Unknown=0, NotChecked=0, Total=5112 [2020-11-12 03:37:37,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3709 states. [2020-11-12 03:37:37,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3709 to 2912. [2020-11-12 03:37:37,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2912 states, 2848 states have (on average 1.7995084269662922) internal successors, (5125), 2911 states have internal predecessors, (5125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:37,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2912 states to 2912 states and 5125 transitions. [2020-11-12 03:37:37,568 INFO L78 Accepts]: Start accepts. Automaton has 2912 states and 5125 transitions. Word has length 136 [2020-11-12 03:37:37,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:37,569 INFO L481 AbstractCegarLoop]: Abstraction has 2912 states and 5125 transitions. [2020-11-12 03:37:37,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:37,569 INFO L276 IsEmpty]: Start isEmpty. Operand 2912 states and 5125 transitions. [2020-11-12 03:37:37,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:37:37,571 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:37,571 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:37,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 252 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable256 [2020-11-12 03:37:37,773 INFO L429 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:37,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:37,774 INFO L82 PathProgramCache]: Analyzing trace with hash 637228593, now seen corresponding path program 247 times [2020-11-12 03:37:37,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:37,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337065392] [2020-11-12 03:37:37,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:38,450 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:38,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337065392] [2020-11-12 03:37:38,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594691980] [2020-11-12 03:37:38,450 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:38,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:37:38,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:38,601 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:38,638 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:38,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:38,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-11-12 03:37:38,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576679804] [2020-11-12 03:37:38,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:37:38,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:38,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:37:38,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:37:38,640 INFO L87 Difference]: Start difference. First operand 2912 states and 5125 transitions. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:41,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:41,359 INFO L93 Difference]: Finished difference Result 5041 states and 8609 transitions. [2020-11-12 03:37:41,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-11-12 03:37:41,361 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:37:41,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:41,365 INFO L225 Difference]: With dead ends: 5041 [2020-11-12 03:37:41,366 INFO L226 Difference]: Without dead ends: 4756 [2020-11-12 03:37:41,366 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1360 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1481, Invalid=3631, Unknown=0, NotChecked=0, Total=5112 [2020-11-12 03:37:41,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4756 states. [2020-11-12 03:37:41,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4756 to 2997. [2020-11-12 03:37:41,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2997 states, 2933 states have (on average 1.8148653256051823) internal successors, (5323), 2996 states have internal predecessors, (5323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:41,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2997 states to 2997 states and 5323 transitions. [2020-11-12 03:37:41,406 INFO L78 Accepts]: Start accepts. Automaton has 2997 states and 5323 transitions. Word has length 136 [2020-11-12 03:37:41,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:41,406 INFO L481 AbstractCegarLoop]: Abstraction has 2997 states and 5323 transitions. [2020-11-12 03:37:41,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:41,406 INFO L276 IsEmpty]: Start isEmpty. Operand 2997 states and 5323 transitions. [2020-11-12 03:37:41,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:37:41,409 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:41,409 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:41,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 253 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable257 [2020-11-12 03:37:41,610 INFO L429 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:41,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:41,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1477205785, now seen corresponding path program 248 times [2020-11-12 03:37:41,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:41,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726164466] [2020-11-12 03:37:41,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:42,335 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:42,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726164466] [2020-11-12 03:37:42,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142292115] [2020-11-12 03:37:42,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:42,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:37:42,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:37:42,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:37:42,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:42,528 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:42,543 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:42,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:42,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-12 03:37:42,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946998910] [2020-11-12 03:37:42,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:37:42,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:42,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:37:42,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:37:42,545 INFO L87 Difference]: Start difference. First operand 2997 states and 5323 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:45,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:45,794 INFO L93 Difference]: Finished difference Result 4040 states and 7229 transitions. [2020-11-12 03:37:45,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-11-12 03:37:45,796 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:37:45,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:45,801 INFO L225 Difference]: With dead ends: 4040 [2020-11-12 03:37:45,801 INFO L226 Difference]: Without dead ends: 3644 [2020-11-12 03:37:45,802 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1369 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1380, Invalid=4022, Unknown=0, NotChecked=0, Total=5402 [2020-11-12 03:37:45,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3644 states. [2020-11-12 03:37:45,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3644 to 2412. [2020-11-12 03:37:45,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2348 states have (on average 1.7265758091993186) internal successors, (4054), 2411 states have internal predecessors, (4054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:45,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 4054 transitions. [2020-11-12 03:37:45,830 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 4054 transitions. Word has length 136 [2020-11-12 03:37:45,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:45,830 INFO L481 AbstractCegarLoop]: Abstraction has 2412 states and 4054 transitions. [2020-11-12 03:37:45,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:45,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 4054 transitions. [2020-11-12 03:37:45,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:37:45,832 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:45,833 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:46,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258,254 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:46,034 INFO L429 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:46,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:46,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1829268968, now seen corresponding path program 249 times [2020-11-12 03:37:46,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:46,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434246093] [2020-11-12 03:37:46,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:46,960 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:46,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434246093] [2020-11-12 03:37:46,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394304519] [2020-11-12 03:37:46,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:47,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-11-12 03:37:47,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:37:47,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:37:47,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:47,093 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:47,121 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:47,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:47,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2020-11-12 03:37:47,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101792059] [2020-11-12 03:37:47,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:37:47,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:47,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:37:47,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:37:47,122 INFO L87 Difference]: Start difference. First operand 2412 states and 4054 transitions. Second operand has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:48,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:48,878 INFO L93 Difference]: Finished difference Result 3909 states and 6984 transitions. [2020-11-12 03:37:48,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-12 03:37:48,879 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:37:48,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:48,884 INFO L225 Difference]: With dead ends: 3909 [2020-11-12 03:37:48,885 INFO L226 Difference]: Without dead ends: 3639 [2020-11-12 03:37:48,885 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=806, Invalid=2274, Unknown=0, NotChecked=0, Total=3080 [2020-11-12 03:37:48,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3639 states. [2020-11-12 03:37:48,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3639 to 2452. [2020-11-12 03:37:48,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 2388 states have (on average 1.726968174204355) internal successors, (4124), 2451 states have internal predecessors, (4124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:48,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 4124 transitions. [2020-11-12 03:37:48,915 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 4124 transitions. Word has length 141 [2020-11-12 03:37:48,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:48,915 INFO L481 AbstractCegarLoop]: Abstraction has 2452 states and 4124 transitions. [2020-11-12 03:37:48,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:48,915 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 4124 transitions. [2020-11-12 03:37:48,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:37:48,917 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:48,917 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:49,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 255 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable259 [2020-11-12 03:37:49,118 INFO L429 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:49,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:49,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1313682136, now seen corresponding path program 250 times [2020-11-12 03:37:49,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:49,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299611220] [2020-11-12 03:37:49,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:50,075 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:50,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299611220] [2020-11-12 03:37:50,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614904622] [2020-11-12 03:37:50,076 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:50,183 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:37:50,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:37:50,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:37:50,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:50,237 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:37:50,258 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:50,285 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:50,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:50,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-11-12 03:37:50,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359944185] [2020-11-12 03:37:50,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:37:50,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:50,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:37:50,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=654, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:37:50,287 INFO L87 Difference]: Start difference. First operand 2452 states and 4124 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:52,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:52,201 INFO L93 Difference]: Finished difference Result 4444 states and 8034 transitions. [2020-11-12 03:37:52,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-12 03:37:52,202 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:37:52,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:52,206 INFO L225 Difference]: With dead ends: 4444 [2020-11-12 03:37:52,207 INFO L226 Difference]: Without dead ends: 4174 [2020-11-12 03:37:52,207 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=865, Invalid=2557, Unknown=0, NotChecked=0, Total=3422 [2020-11-12 03:37:52,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4174 states. [2020-11-12 03:37:52,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4174 to 2477. [2020-11-12 03:37:52,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2413 states have (on average 1.7318690426854537) internal successors, (4179), 2476 states have internal predecessors, (4179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:52,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 4179 transitions. [2020-11-12 03:37:52,254 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 4179 transitions. Word has length 141 [2020-11-12 03:37:52,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:52,254 INFO L481 AbstractCegarLoop]: Abstraction has 2477 states and 4179 transitions. [2020-11-12 03:37:52,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:52,254 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 4179 transitions. [2020-11-12 03:37:52,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:37:52,256 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:52,256 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:52,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260,256 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:52,459 INFO L429 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:52,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:52,460 INFO L82 PathProgramCache]: Analyzing trace with hash 935589446, now seen corresponding path program 251 times [2020-11-12 03:37:52,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:52,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036082313] [2020-11-12 03:37:52,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:53,338 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:53,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036082313] [2020-11-12 03:37:53,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252702489] [2020-11-12 03:37:53,338 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:53,444 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2020-11-12 03:37:53,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:37:53,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:37:53,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:53,474 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:53,500 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:53,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:53,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2020-11-12 03:37:53,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852254366] [2020-11-12 03:37:53,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:37:53,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:53,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:37:53,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:37:53,502 INFO L87 Difference]: Start difference. First operand 2477 states and 4179 transitions. Second operand has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:55,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:55,381 INFO L93 Difference]: Finished difference Result 4459 states and 8044 transitions. [2020-11-12 03:37:55,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 03:37:55,383 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:37:55,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:55,388 INFO L225 Difference]: With dead ends: 4459 [2020-11-12 03:37:55,388 INFO L226 Difference]: Without dead ends: 4189 [2020-11-12 03:37:55,388 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=861, Invalid=2561, Unknown=0, NotChecked=0, Total=3422 [2020-11-12 03:37:55,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4189 states. [2020-11-12 03:37:55,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4189 to 2502. [2020-11-12 03:37:55,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 2438 states have (on average 1.7366694011484825) internal successors, (4234), 2501 states have internal predecessors, (4234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:55,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 4234 transitions. [2020-11-12 03:37:55,435 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 4234 transitions. Word has length 141 [2020-11-12 03:37:55,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:55,436 INFO L481 AbstractCegarLoop]: Abstraction has 2502 states and 4234 transitions. [2020-11-12 03:37:55,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:55,436 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 4234 transitions. [2020-11-12 03:37:55,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:37:55,438 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:55,438 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:55,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261,257 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:55,639 INFO L429 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:55,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:55,640 INFO L82 PathProgramCache]: Analyzing trace with hash 616588678, now seen corresponding path program 252 times [2020-11-12 03:37:55,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:55,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873354767] [2020-11-12 03:37:55,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:56,527 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:56,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873354767] [2020-11-12 03:37:56,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684443415] [2020-11-12 03:37:56,528 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:56,635 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-12 03:37:56,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:37:56,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:37:56,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:56,690 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:37:56,714 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:56,739 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:56,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:56,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-11-12 03:37:56,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673070642] [2020-11-12 03:37:56,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:37:56,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:56,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:37:56,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=670, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:37:56,741 INFO L87 Difference]: Start difference. First operand 2502 states and 4234 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:58,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:58,876 INFO L93 Difference]: Finished difference Result 4459 states and 8024 transitions. [2020-11-12 03:37:58,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-12 03:37:58,877 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:37:58,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:58,882 INFO L225 Difference]: With dead ends: 4459 [2020-11-12 03:37:58,882 INFO L226 Difference]: Without dead ends: 4189 [2020-11-12 03:37:58,882 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=883, Invalid=2777, Unknown=0, NotChecked=0, Total=3660 [2020-11-12 03:37:58,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4189 states. [2020-11-12 03:37:58,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4189 to 2527. [2020-11-12 03:37:58,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2527 states, 2463 states have (on average 1.7413723101908243) internal successors, (4289), 2526 states have internal predecessors, (4289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:58,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2527 states to 2527 states and 4289 transitions. [2020-11-12 03:37:58,913 INFO L78 Accepts]: Start accepts. Automaton has 2527 states and 4289 transitions. Word has length 141 [2020-11-12 03:37:58,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:58,914 INFO L481 AbstractCegarLoop]: Abstraction has 2527 states and 4289 transitions. [2020-11-12 03:37:58,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:58,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2527 states and 4289 transitions. [2020-11-12 03:37:58,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:37:58,916 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:58,916 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:59,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262,258 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:59,118 INFO L429 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:59,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:59,118 INFO L82 PathProgramCache]: Analyzing trace with hash -820069340, now seen corresponding path program 253 times [2020-11-12 03:37:59,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:59,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504339109] [2020-11-12 03:37:59,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:59,958 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:59,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504339109] [2020-11-12 03:37:59,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986215007] [2020-11-12 03:37:59,959 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 259 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 259 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:00,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:38:00,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:38:00,080 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:38:00,106 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:00,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:38:00,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2020-11-12 03:38:00,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797153378] [2020-11-12 03:38:00,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:38:00,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:38:00,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:38:00,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:38:00,107 INFO L87 Difference]: Start difference. First operand 2527 states and 4289 transitions. Second operand has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:02,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:38:02,145 INFO L93 Difference]: Finished difference Result 4459 states and 8004 transitions. [2020-11-12 03:38:02,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 03:38:02,147 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:38:02,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:38:02,151 INFO L225 Difference]: With dead ends: 4459 [2020-11-12 03:38:02,151 INFO L226 Difference]: Without dead ends: 4189 [2020-11-12 03:38:02,152 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=893, Invalid=2767, Unknown=0, NotChecked=0, Total=3660 [2020-11-12 03:38:02,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4189 states. [2020-11-12 03:38:02,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4189 to 2552. [2020-11-12 03:38:02,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2552 states, 2488 states have (on average 1.7459807073954985) internal successors, (4344), 2551 states have internal predecessors, (4344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:02,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2552 states to 2552 states and 4344 transitions. [2020-11-12 03:38:02,183 INFO L78 Accepts]: Start accepts. Automaton has 2552 states and 4344 transitions. Word has length 141 [2020-11-12 03:38:02,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:38:02,183 INFO L481 AbstractCegarLoop]: Abstraction has 2552 states and 4344 transitions. [2020-11-12 03:38:02,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:02,184 INFO L276 IsEmpty]: Start isEmpty. Operand 2552 states and 4344 transitions. [2020-11-12 03:38:02,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:38:02,186 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:38:02,186 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:38:02,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263,259 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:02,386 INFO L429 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:38:02,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:38:02,387 INFO L82 PathProgramCache]: Analyzing trace with hash 817970020, now seen corresponding path program 254 times [2020-11-12 03:38:02,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:38:02,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625542272] [2020-11-12 03:38:02,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:38:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:03,250 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:03,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625542272] [2020-11-12 03:38:03,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599395305] [2020-11-12 03:38:03,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 260 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 260 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:03,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:38:03,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:38:03,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:38:03,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:38:03,399 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:38:03,426 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:38:03,452 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:03,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:38:03,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-11-12 03:38:03,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525663130] [2020-11-12 03:38:03,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:38:03,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:38:03,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:38:03,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:38:03,454 INFO L87 Difference]: Start difference. First operand 2552 states and 4344 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:05,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:38:05,831 INFO L93 Difference]: Finished difference Result 4459 states and 7984 transitions. [2020-11-12 03:38:05,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-11-12 03:38:05,832 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:38:05,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:38:05,837 INFO L225 Difference]: With dead ends: 4459 [2020-11-12 03:38:05,837 INFO L226 Difference]: Without dead ends: 4189 [2020-11-12 03:38:05,837 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=917, Invalid=2989, Unknown=0, NotChecked=0, Total=3906 [2020-11-12 03:38:05,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4189 states. [2020-11-12 03:38:05,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4189 to 2577. [2020-11-12 03:38:05,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2577 states, 2513 states have (on average 1.7504974134500597) internal successors, (4399), 2576 states have internal predecessors, (4399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:05,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2577 states to 2577 states and 4399 transitions. [2020-11-12 03:38:05,869 INFO L78 Accepts]: Start accepts. Automaton has 2577 states and 4399 transitions. Word has length 141 [2020-11-12 03:38:05,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:38:05,870 INFO L481 AbstractCegarLoop]: Abstraction has 2577 states and 4399 transitions. [2020-11-12 03:38:05,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:05,870 INFO L276 IsEmpty]: Start isEmpty. Operand 2577 states and 4399 transitions. [2020-11-12 03:38:05,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:38:05,872 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:38:05,872 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:38:06,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264,260 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:06,072 INFO L429 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:38:06,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:38:06,073 INFO L82 PathProgramCache]: Analyzing trace with hash -2013290622, now seen corresponding path program 255 times [2020-11-12 03:38:06,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:38:06,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375515928] [2020-11-12 03:38:06,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:38:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:06,882 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:06,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375515928] [2020-11-12 03:38:06,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72778250] [2020-11-12 03:38:06,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 261 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 261 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:06,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-11-12 03:38:06,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:38:06,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 44 conjunts are in the unsatisfiable core [2020-11-12 03:38:06,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:38:07,022 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:38:07,046 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:07,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:38:07,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2020-11-12 03:38:07,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884209379] [2020-11-12 03:38:07,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:38:07,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:38:07,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:38:07,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:38:07,047 INFO L87 Difference]: Start difference. First operand 2577 states and 4399 transitions. Second operand has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:09,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:38:09,203 INFO L93 Difference]: Finished difference Result 4459 states and 7964 transitions. [2020-11-12 03:38:09,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 03:38:09,204 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:38:09,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:38:09,208 INFO L225 Difference]: With dead ends: 4459 [2020-11-12 03:38:09,209 INFO L226 Difference]: Without dead ends: 4189 [2020-11-12 03:38:09,209 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=941, Invalid=2965, Unknown=0, NotChecked=0, Total=3906 [2020-11-12 03:38:09,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4189 states. [2020-11-12 03:38:09,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4189 to 2602. [2020-11-12 03:38:09,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2602 states, 2538 states have (on average 1.7549251379038613) internal successors, (4454), 2601 states have internal predecessors, (4454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:09,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 4454 transitions. [2020-11-12 03:38:09,246 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 4454 transitions. Word has length 141 [2020-11-12 03:38:09,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:38:09,246 INFO L481 AbstractCegarLoop]: Abstraction has 2602 states and 4454 transitions. [2020-11-12 03:38:09,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:09,246 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 4454 transitions. [2020-11-12 03:38:09,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:38:09,248 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:38:09,248 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:38:09,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 261 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable265 [2020-11-12 03:38:09,449 INFO L429 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:38:09,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:38:09,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1013174590, now seen corresponding path program 256 times [2020-11-12 03:38:09,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:38:09,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151249649] [2020-11-12 03:38:09,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:38:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:10,284 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:10,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151249649] [2020-11-12 03:38:10,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496190881] [2020-11-12 03:38:10,285 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 262 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 262 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:10,379 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:38:10,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:38:10,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:38:10,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:38:10,436 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:38:10,465 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:38:10,490 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:10,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:38:10,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-11-12 03:38:10,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69350739] [2020-11-12 03:38:10,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:38:10,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:38:10,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:38:10,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:38:10,491 INFO L87 Difference]: Start difference. First operand 2602 states and 4454 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:12,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:38:12,884 INFO L93 Difference]: Finished difference Result 4459 states and 7944 transitions. [2020-11-12 03:38:12,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-11-12 03:38:12,885 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:38:12,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:38:12,890 INFO L225 Difference]: With dead ends: 4459 [2020-11-12 03:38:12,890 INFO L226 Difference]: Without dead ends: 4189 [2020-11-12 03:38:12,891 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=967, Invalid=3193, Unknown=0, NotChecked=0, Total=4160 [2020-11-12 03:38:12,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4189 states. [2020-11-12 03:38:12,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4189 to 2627. [2020-11-12 03:38:12,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2627 states, 2563 states have (on average 1.759266484588373) internal successors, (4509), 2626 states have internal predecessors, (4509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:12,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 4509 transitions. [2020-11-12 03:38:12,925 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 4509 transitions. Word has length 141 [2020-11-12 03:38:12,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:38:12,925 INFO L481 AbstractCegarLoop]: Abstraction has 2627 states and 4509 transitions. [2020-11-12 03:38:12,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:12,925 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 4509 transitions. [2020-11-12 03:38:12,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:38:12,927 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:38:12,927 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:38:13,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266,262 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:13,128 INFO L429 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:38:13,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:38:13,128 INFO L82 PathProgramCache]: Analyzing trace with hash -2140831648, now seen corresponding path program 257 times [2020-11-12 03:38:13,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:38:13,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185340735] [2020-11-12 03:38:13,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:38:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:13,924 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:13,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185340735] [2020-11-12 03:38:13,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978174681] [2020-11-12 03:38:13,924 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 263 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 263 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:14,026 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2020-11-12 03:38:14,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:38:14,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:38:14,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:38:14,061 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:38:14,085 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:14,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:38:14,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2020-11-12 03:38:14,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116248637] [2020-11-12 03:38:14,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:38:14,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:38:14,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:38:14,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:38:14,087 INFO L87 Difference]: Start difference. First operand 2627 states and 4509 transitions. Second operand has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:16,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:38:16,393 INFO L93 Difference]: Finished difference Result 4459 states and 7924 transitions. [2020-11-12 03:38:16,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 03:38:16,395 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:38:16,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:38:16,400 INFO L225 Difference]: With dead ends: 4459 [2020-11-12 03:38:16,400 INFO L226 Difference]: Without dead ends: 4189 [2020-11-12 03:38:16,400 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1005, Invalid=3155, Unknown=0, NotChecked=0, Total=4160 [2020-11-12 03:38:16,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4189 states. [2020-11-12 03:38:16,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4189 to 2652. [2020-11-12 03:38:16,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2652 states, 2588 states have (on average 1.7635239567233385) internal successors, (4564), 2651 states have internal predecessors, (4564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:16,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 4564 transitions. [2020-11-12 03:38:16,435 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 4564 transitions. Word has length 141 [2020-11-12 03:38:16,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:38:16,435 INFO L481 AbstractCegarLoop]: Abstraction has 2652 states and 4564 transitions. [2020-11-12 03:38:16,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:16,435 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 4564 transitions. [2020-11-12 03:38:16,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:38:16,437 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:38:16,437 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:38:16,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 263 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable267 [2020-11-12 03:38:16,638 INFO L429 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:38:16,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:38:16,638 INFO L82 PathProgramCache]: Analyzing trace with hash -732946528, now seen corresponding path program 258 times [2020-11-12 03:38:16,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:38:16,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637928219] [2020-11-12 03:38:16,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:38:16,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:17,465 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:17,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637928219] [2020-11-12 03:38:17,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986513496] [2020-11-12 03:38:17,466 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 264 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 264 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:17,573 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-12 03:38:17,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:38:17,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:38:17,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:38:17,651 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:38:17,690 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:38:17,727 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:17,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:38:17,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-11-12 03:38:17,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031321800] [2020-11-12 03:38:17,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:38:17,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:38:17,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:38:17,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:38:17,729 INFO L87 Difference]: Start difference. First operand 2652 states and 4564 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:20,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:38:20,425 INFO L93 Difference]: Finished difference Result 4459 states and 7904 transitions. [2020-11-12 03:38:20,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-11-12 03:38:20,427 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:38:20,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:38:20,432 INFO L225 Difference]: With dead ends: 4459 [2020-11-12 03:38:20,432 INFO L226 Difference]: Without dead ends: 4189 [2020-11-12 03:38:20,433 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1033, Invalid=3389, Unknown=0, NotChecked=0, Total=4422 [2020-11-12 03:38:20,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4189 states. [2020-11-12 03:38:20,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4189 to 2677. [2020-11-12 03:38:20,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2677 states, 2613 states have (on average 1.7676999617298126) internal successors, (4619), 2676 states have internal predecessors, (4619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:20,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2677 states to 2677 states and 4619 transitions. [2020-11-12 03:38:20,467 INFO L78 Accepts]: Start accepts. Automaton has 2677 states and 4619 transitions. Word has length 141 [2020-11-12 03:38:20,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:38:20,468 INFO L481 AbstractCegarLoop]: Abstraction has 2677 states and 4619 transitions. [2020-11-12 03:38:20,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:20,468 INFO L276 IsEmpty]: Start isEmpty. Operand 2677 states and 4619 transitions. [2020-11-12 03:38:20,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:38:20,470 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:38:20,470 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:38:20,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 264 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable268 [2020-11-12 03:38:20,671 INFO L429 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:38:20,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:38:20,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1654178114, now seen corresponding path program 259 times [2020-11-12 03:38:20,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:38:20,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30851804] [2020-11-12 03:38:20,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:38:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:21,449 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:21,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30851804] [2020-11-12 03:38:21,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215117315] [2020-11-12 03:38:21,450 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 265 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 265 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:21,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:38:21,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:38:21,581 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:38:21,621 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:21,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:38:21,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2020-11-12 03:38:21,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861571466] [2020-11-12 03:38:21,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:38:21,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:38:21,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:38:21,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:38:21,622 INFO L87 Difference]: Start difference. First operand 2677 states and 4619 transitions. Second operand has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:23,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:38:23,919 INFO L93 Difference]: Finished difference Result 4459 states and 7884 transitions. [2020-11-12 03:38:23,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-12 03:38:23,920 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:38:23,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:38:23,925 INFO L225 Difference]: With dead ends: 4459 [2020-11-12 03:38:23,925 INFO L226 Difference]: Without dead ends: 4189 [2020-11-12 03:38:23,926 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1114 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1085, Invalid=3337, Unknown=0, NotChecked=0, Total=4422 [2020-11-12 03:38:23,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4189 states. [2020-11-12 03:38:23,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4189 to 2702. [2020-11-12 03:38:23,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2702 states, 2638 states have (on average 1.7717968157695223) internal successors, (4674), 2701 states have internal predecessors, (4674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:23,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2702 states to 2702 states and 4674 transitions. [2020-11-12 03:38:23,961 INFO L78 Accepts]: Start accepts. Automaton has 2702 states and 4674 transitions. Word has length 141 [2020-11-12 03:38:23,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:38:23,961 INFO L481 AbstractCegarLoop]: Abstraction has 2702 states and 4674 transitions. [2020-11-12 03:38:23,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:23,962 INFO L276 IsEmpty]: Start isEmpty. Operand 2702 states and 4674 transitions. [2020-11-12 03:38:23,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:38:23,964 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:38:23,964 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:38:24,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269,265 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:24,165 INFO L429 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:38:24,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:38:24,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1626598910, now seen corresponding path program 260 times [2020-11-12 03:38:24,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:38:24,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301794943] [2020-11-12 03:38:24,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:38:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:25,035 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:25,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301794943] [2020-11-12 03:38:25,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835034402] [2020-11-12 03:38:25,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 266 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 266 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:25,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:38:25,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:38:25,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:38:25,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:38:25,198 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:38:25,229 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:38:25,252 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:25,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:38:25,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-11-12 03:38:25,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502134005] [2020-11-12 03:38:25,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:38:25,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:38:25,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:38:25,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:38:25,253 INFO L87 Difference]: Start difference. First operand 2702 states and 4674 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:28,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:38:28,055 INFO L93 Difference]: Finished difference Result 4459 states and 7864 transitions. [2020-11-12 03:38:28,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-11-12 03:38:28,057 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:38:28,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:38:28,061 INFO L225 Difference]: With dead ends: 4459 [2020-11-12 03:38:28,062 INFO L226 Difference]: Without dead ends: 4189 [2020-11-12 03:38:28,062 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1146 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1115, Invalid=3577, Unknown=0, NotChecked=0, Total=4692 [2020-11-12 03:38:28,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4189 states. [2020-11-12 03:38:28,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4189 to 2727. [2020-11-12 03:38:28,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2727 states, 2663 states have (on average 1.7758167480285392) internal successors, (4729), 2726 states have internal predecessors, (4729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:28,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 4729 transitions. [2020-11-12 03:38:28,097 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 4729 transitions. Word has length 141 [2020-11-12 03:38:28,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:38:28,097 INFO L481 AbstractCegarLoop]: Abstraction has 2727 states and 4729 transitions. [2020-11-12 03:38:28,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:28,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 4729 transitions. [2020-11-12 03:38:28,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:38:28,099 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:38:28,100 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:38:28,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 266 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable270 [2020-11-12 03:38:28,300 INFO L429 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:38:28,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:38:28,301 INFO L82 PathProgramCache]: Analyzing trace with hash 154385052, now seen corresponding path program 261 times [2020-11-12 03:38:28,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:38:28,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728347860] [2020-11-12 03:38:28,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:38:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:29,086 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:29,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728347860] [2020-11-12 03:38:29,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151084775] [2020-11-12 03:38:29,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 267 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 267 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:29,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-11-12 03:38:29,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:38:29,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:38:29,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:38:29,231 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:38:29,252 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:29,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:38:29,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2020-11-12 03:38:29,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483710859] [2020-11-12 03:38:29,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:38:29,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:38:29,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:38:29,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=633, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:38:29,253 INFO L87 Difference]: Start difference. First operand 2727 states and 4729 transitions. Second operand has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:31,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:38:31,703 INFO L93 Difference]: Finished difference Result 4459 states and 7844 transitions. [2020-11-12 03:38:31,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-12 03:38:31,704 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:38:31,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:38:31,710 INFO L225 Difference]: With dead ends: 4459 [2020-11-12 03:38:31,710 INFO L226 Difference]: Without dead ends: 4189 [2020-11-12 03:38:31,710 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1222 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1181, Invalid=3511, Unknown=0, NotChecked=0, Total=4692 [2020-11-12 03:38:31,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4189 states. [2020-11-12 03:38:31,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4189 to 2752. [2020-11-12 03:38:31,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2752 states, 2688 states have (on average 1.7797619047619047) internal successors, (4784), 2751 states have internal predecessors, (4784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:31,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2752 states to 2752 states and 4784 transitions. [2020-11-12 03:38:31,746 INFO L78 Accepts]: Start accepts. Automaton has 2752 states and 4784 transitions. Word has length 141 [2020-11-12 03:38:31,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:38:31,746 INFO L481 AbstractCegarLoop]: Abstraction has 2752 states and 4784 transitions. [2020-11-12 03:38:31,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:31,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2752 states and 4784 transitions. [2020-11-12 03:38:31,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:38:31,748 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:38:31,748 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:38:31,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271,267 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:31,949 INFO L429 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:38:31,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:38:31,950 INFO L82 PathProgramCache]: Analyzing trace with hash -323585572, now seen corresponding path program 262 times [2020-11-12 03:38:31,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:38:31,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526845824] [2020-11-12 03:38:31,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:38:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:32,778 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:32,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526845824] [2020-11-12 03:38:32,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836732396] [2020-11-12 03:38:32,778 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 268 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 268 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:32,874 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:38:32,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:38:32,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:38:32,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:38:32,932 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:38:32,970 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:38:32,996 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:32,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:38:32,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-11-12 03:38:32,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836240903] [2020-11-12 03:38:32,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:38:32,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:38:32,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:38:32,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:38:32,998 INFO L87 Difference]: Start difference. First operand 2752 states and 4784 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:35,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:38:35,986 INFO L93 Difference]: Finished difference Result 4459 states and 7824 transitions. [2020-11-12 03:38:35,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-11-12 03:38:35,988 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:38:35,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:38:35,993 INFO L225 Difference]: With dead ends: 4459 [2020-11-12 03:38:35,993 INFO L226 Difference]: Without dead ends: 4189 [2020-11-12 03:38:35,993 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1257 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1213, Invalid=3757, Unknown=0, NotChecked=0, Total=4970 [2020-11-12 03:38:35,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4189 states. [2020-11-12 03:38:36,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4189 to 2777. [2020-11-12 03:38:36,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2777 states, 2713 states have (on average 1.7836343531146333) internal successors, (4839), 2776 states have internal predecessors, (4839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:36,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2777 states to 2777 states and 4839 transitions. [2020-11-12 03:38:36,027 INFO L78 Accepts]: Start accepts. Automaton has 2777 states and 4839 transitions. Word has length 141 [2020-11-12 03:38:36,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:38:36,027 INFO L481 AbstractCegarLoop]: Abstraction has 2777 states and 4839 transitions. [2020-11-12 03:38:36,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:36,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2777 states and 4839 transitions. [2020-11-12 03:38:36,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:38:36,030 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:38:36,030 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:38:36,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272,268 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:36,230 INFO L429 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:38:36,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:38:36,231 INFO L82 PathProgramCache]: Analyzing trace with hash 823251962, now seen corresponding path program 263 times [2020-11-12 03:38:36,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:38:36,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501486552] [2020-11-12 03:38:36,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:38:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:36,988 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:36,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501486552] [2020-11-12 03:38:36,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152223809] [2020-11-12 03:38:36,988 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 269 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 269 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:37,089 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-11-12 03:38:37,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:38:37,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:38:37,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:38:37,133 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:38:37,153 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:37,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:38:37,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2020-11-12 03:38:37,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216313979] [2020-11-12 03:38:37,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:38:37,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:38:37,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:38:37,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:38:37,154 INFO L87 Difference]: Start difference. First operand 2777 states and 4839 transitions. Second operand has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:39,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:38:39,773 INFO L93 Difference]: Finished difference Result 4459 states and 7804 transitions. [2020-11-12 03:38:39,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-11-12 03:38:39,774 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:38:39,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:38:39,779 INFO L225 Difference]: With dead ends: 4459 [2020-11-12 03:38:39,779 INFO L226 Difference]: Without dead ends: 4189 [2020-11-12 03:38:39,779 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1334 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1293, Invalid=3677, Unknown=0, NotChecked=0, Total=4970 [2020-11-12 03:38:39,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4189 states. [2020-11-12 03:38:39,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4189 to 2802. [2020-11-12 03:38:39,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2802 states, 2738 states have (on average 1.7874360847333821) internal successors, (4894), 2801 states have internal predecessors, (4894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:39,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2802 states to 2802 states and 4894 transitions. [2020-11-12 03:38:39,815 INFO L78 Accepts]: Start accepts. Automaton has 2802 states and 4894 transitions. Word has length 141 [2020-11-12 03:38:39,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:38:39,815 INFO L481 AbstractCegarLoop]: Abstraction has 2802 states and 4894 transitions. [2020-11-12 03:38:39,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:39,815 INFO L276 IsEmpty]: Start isEmpty. Operand 2802 states and 4894 transitions. [2020-11-12 03:38:39,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:38:39,817 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:38:39,817 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:38:40,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273,269 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:40,018 INFO L429 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:38:40,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:38:40,019 INFO L82 PathProgramCache]: Analyzing trace with hash 2111742778, now seen corresponding path program 264 times [2020-11-12 03:38:40,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:38:40,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678868559] [2020-11-12 03:38:40,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:38:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:40,810 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:40,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678868559] [2020-11-12 03:38:40,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220400543] [2020-11-12 03:38:40,810 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 270 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 270 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:40,919 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-11-12 03:38:40,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:38:40,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-12 03:38:40,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:38:41,016 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:38:41,044 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:41,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:38:41,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-11-12 03:38:41,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969367312] [2020-11-12 03:38:41,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:38:41,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:38:41,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:38:41,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:38:41,045 INFO L87 Difference]: Start difference. First operand 2802 states and 4894 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:44,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:38:44,237 INFO L93 Difference]: Finished difference Result 4459 states and 7784 transitions. [2020-11-12 03:38:44,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-11-12 03:38:44,239 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:38:44,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:38:44,244 INFO L225 Difference]: With dead ends: 4459 [2020-11-12 03:38:44,244 INFO L226 Difference]: Without dead ends: 4189 [2020-11-12 03:38:44,244 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1325 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1240, Invalid=4016, Unknown=0, NotChecked=0, Total=5256 [2020-11-12 03:38:44,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4189 states. [2020-11-12 03:38:44,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4189 to 2827. [2020-11-12 03:38:44,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2827 states, 2763 states have (on average 1.7911690191820484) internal successors, (4949), 2826 states have internal predecessors, (4949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:44,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2827 states to 2827 states and 4949 transitions. [2020-11-12 03:38:44,281 INFO L78 Accepts]: Start accepts. Automaton has 2827 states and 4949 transitions. Word has length 141 [2020-11-12 03:38:44,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:38:44,281 INFO L481 AbstractCegarLoop]: Abstraction has 2827 states and 4949 transitions. [2020-11-12 03:38:44,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:44,281 INFO L276 IsEmpty]: Start isEmpty. Operand 2827 states and 4949 transitions. [2020-11-12 03:38:44,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:38:44,285 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:38:44,285 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:38:44,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274,270 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:44,498 INFO L429 AbstractCegarLoop]: === Iteration 276 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:38:44,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:38:44,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1130392280, now seen corresponding path program 265 times [2020-11-12 03:38:44,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:38:44,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145946612] [2020-11-12 03:38:44,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:38:44,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:45,271 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:45,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145946612] [2020-11-12 03:38:45,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446349656] [2020-11-12 03:38:45,272 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 271 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 271 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:45,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:38:45,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:38:45,415 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:38:45,433 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:45,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:38:45,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2020-11-12 03:38:45,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960491121] [2020-11-12 03:38:45,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:38:45,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:38:45,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:38:45,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:38:45,434 INFO L87 Difference]: Start difference. First operand 2827 states and 4949 transitions. Second operand has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:48,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:38:48,167 INFO L93 Difference]: Finished difference Result 4459 states and 7764 transitions. [2020-11-12 03:38:48,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-11-12 03:38:48,168 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:38:48,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:38:48,173 INFO L225 Difference]: With dead ends: 4459 [2020-11-12 03:38:48,173 INFO L226 Difference]: Without dead ends: 4189 [2020-11-12 03:38:48,174 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1450 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1421, Invalid=3835, Unknown=0, NotChecked=0, Total=5256 [2020-11-12 03:38:48,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4189 states. [2020-11-12 03:38:48,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4189 to 2852. [2020-11-12 03:38:48,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2852 states, 2788 states have (on average 1.7948350071736012) internal successors, (5004), 2851 states have internal predecessors, (5004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:48,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2852 states to 2852 states and 5004 transitions. [2020-11-12 03:38:48,211 INFO L78 Accepts]: Start accepts. Automaton has 2852 states and 5004 transitions. Word has length 141 [2020-11-12 03:38:48,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:38:48,211 INFO L481 AbstractCegarLoop]: Abstraction has 2852 states and 5004 transitions. [2020-11-12 03:38:48,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:48,211 INFO L276 IsEmpty]: Start isEmpty. Operand 2852 states and 5004 transitions. [2020-11-12 03:38:48,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:38:48,214 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:38:48,214 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:38:48,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275,271 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:48,414 INFO L429 AbstractCegarLoop]: === Iteration 277 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:38:48,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:38:48,415 INFO L82 PathProgramCache]: Analyzing trace with hash 466307608, now seen corresponding path program 266 times [2020-11-12 03:38:48,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:38:48,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231774392] [2020-11-12 03:38:48,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:38:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:49,271 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:49,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231774392] [2020-11-12 03:38:49,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763533730] [2020-11-12 03:38:49,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 272 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 272 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:49,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:38:49,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:38:49,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:38:49,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:38:49,425 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:38:49,463 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:38:49,499 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:49,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:38:49,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-11-12 03:38:49,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897072339] [2020-11-12 03:38:49,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:38:49,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:38:49,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:38:49,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=670, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:38:49,501 INFO L87 Difference]: Start difference. First operand 2852 states and 5004 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:52,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:38:52,864 INFO L93 Difference]: Finished difference Result 4459 states and 7744 transitions. [2020-11-12 03:38:52,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-11-12 03:38:52,866 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:38:52,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:38:52,871 INFO L225 Difference]: With dead ends: 4459 [2020-11-12 03:38:52,871 INFO L226 Difference]: Without dead ends: 4189 [2020-11-12 03:38:52,872 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1491 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1457, Invalid=4093, Unknown=0, NotChecked=0, Total=5550 [2020-11-12 03:38:52,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4189 states. [2020-11-12 03:38:52,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4189 to 2877. [2020-11-12 03:38:52,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2877 states, 2813 states have (on average 1.798435833629577) internal successors, (5059), 2876 states have internal predecessors, (5059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:52,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2877 states to 2877 states and 5059 transitions. [2020-11-12 03:38:52,908 INFO L78 Accepts]: Start accepts. Automaton has 2877 states and 5059 transitions. Word has length 141 [2020-11-12 03:38:52,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:38:52,908 INFO L481 AbstractCegarLoop]: Abstraction has 2877 states and 5059 transitions. [2020-11-12 03:38:52,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:52,908 INFO L276 IsEmpty]: Start isEmpty. Operand 2877 states and 5059 transitions. [2020-11-12 03:38:52,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:38:52,911 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:38:52,911 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:38:53,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276,272 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:53,111 INFO L429 AbstractCegarLoop]: === Iteration 278 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:38:53,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:38:53,112 INFO L82 PathProgramCache]: Analyzing trace with hash 764829494, now seen corresponding path program 267 times [2020-11-12 03:38:53,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:38:53,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891878135] [2020-11-12 03:38:53,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:38:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:53,897 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:53,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891878135] [2020-11-12 03:38:53,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768275345] [2020-11-12 03:38:53,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 273 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 273 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:54,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-11-12 03:38:54,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:38:54,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-12 03:38:54,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:38:54,052 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:38:54,071 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:54,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:38:54,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2020-11-12 03:38:54,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263539296] [2020-11-12 03:38:54,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:38:54,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:38:54,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:38:54,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:38:54,072 INFO L87 Difference]: Start difference. First operand 2877 states and 5059 transitions. Second operand has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:56,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:38:56,964 INFO L93 Difference]: Finished difference Result 4459 states and 7724 transitions. [2020-11-12 03:38:56,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-11-12 03:38:56,966 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:38:56,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:38:56,971 INFO L225 Difference]: With dead ends: 4459 [2020-11-12 03:38:56,971 INFO L226 Difference]: Without dead ends: 4189 [2020-11-12 03:38:56,972 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1570 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1565, Invalid=3985, Unknown=0, NotChecked=0, Total=5550 [2020-11-12 03:38:56,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4189 states. [2020-11-12 03:38:57,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4189 to 2902. [2020-11-12 03:38:57,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2902 states, 2838 states have (on average 1.8019732205778718) internal successors, (5114), 2901 states have internal predecessors, (5114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:57,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2902 states to 2902 states and 5114 transitions. [2020-11-12 03:38:57,026 INFO L78 Accepts]: Start accepts. Automaton has 2902 states and 5114 transitions. Word has length 141 [2020-11-12 03:38:57,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:38:57,026 INFO L481 AbstractCegarLoop]: Abstraction has 2902 states and 5114 transitions. [2020-11-12 03:38:57,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:57,026 INFO L276 IsEmpty]: Start isEmpty. Operand 2902 states and 5114 transitions. [2020-11-12 03:38:57,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:38:57,028 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:38:57,028 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:38:57,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 273 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable277 [2020-11-12 03:38:57,229 INFO L429 AbstractCegarLoop]: === Iteration 279 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:38:57,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:38:57,230 INFO L82 PathProgramCache]: Analyzing trace with hash -856469898, now seen corresponding path program 268 times [2020-11-12 03:38:57,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:38:57,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313597181] [2020-11-12 03:38:57,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:38:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:58,008 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:58,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313597181] [2020-11-12 03:38:58,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596890848] [2020-11-12 03:38:58,009 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 274 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 274 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:58,104 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:38:58,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:38:58,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:38:58,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:38:58,164 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:38:58,203 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:38:58,221 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:58,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:38:58,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-11-12 03:38:58,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846086738] [2020-11-12 03:38:58,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:38:58,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:38:58,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:38:58,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=654, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:38:58,222 INFO L87 Difference]: Start difference. First operand 2902 states and 5114 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:01,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:39:01,875 INFO L93 Difference]: Finished difference Result 4504 states and 7782 transitions. [2020-11-12 03:39:01,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-11-12 03:39:01,877 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:39:01,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:39:01,881 INFO L225 Difference]: With dead ends: 4504 [2020-11-12 03:39:01,882 INFO L226 Difference]: Without dead ends: 4234 [2020-11-12 03:39:01,882 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1614 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1603, Invalid=4249, Unknown=0, NotChecked=0, Total=5852 [2020-11-12 03:39:01,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4234 states. [2020-11-12 03:39:01,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4234 to 2927. [2020-11-12 03:39:01,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2927 states, 2863 states have (on average 1.8075445337059028) internal successors, (5175), 2926 states have internal predecessors, (5175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:01,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2927 states to 2927 states and 5175 transitions. [2020-11-12 03:39:01,918 INFO L78 Accepts]: Start accepts. Automaton has 2927 states and 5175 transitions. Word has length 141 [2020-11-12 03:39:01,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:39:01,918 INFO L481 AbstractCegarLoop]: Abstraction has 2927 states and 5175 transitions. [2020-11-12 03:39:01,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:01,918 INFO L276 IsEmpty]: Start isEmpty. Operand 2927 states and 5175 transitions. [2020-11-12 03:39:01,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:39:01,920 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:39:01,920 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:39:02,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 274 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable278 [2020-11-12 03:39:02,121 INFO L429 AbstractCegarLoop]: === Iteration 280 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:39:02,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:39:02,122 INFO L82 PathProgramCache]: Analyzing trace with hash 277620266, now seen corresponding path program 269 times [2020-11-12 03:39:02,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:39:02,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054464010] [2020-11-12 03:39:02,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:39:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:02,872 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:02,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054464010] [2020-11-12 03:39:02,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046460611] [2020-11-12 03:39:02,872 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 275 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 275 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:02,974 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-11-12 03:39:02,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:39:02,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:39:02,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:39:03,025 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:39:03,047 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:03,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:39:03,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2020-11-12 03:39:03,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805755150] [2020-11-12 03:39:03,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:39:03,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:39:03,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:39:03,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=581, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:39:03,049 INFO L87 Difference]: Start difference. First operand 2927 states and 5175 transitions. Second operand has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:06,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:39:06,097 INFO L93 Difference]: Finished difference Result 5566 states and 9194 transitions. [2020-11-12 03:39:06,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-11-12 03:39:06,098 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:39:06,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:39:06,104 INFO L225 Difference]: With dead ends: 5566 [2020-11-12 03:39:06,104 INFO L226 Difference]: Without dead ends: 5281 [2020-11-12 03:39:06,105 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1693 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1726, Invalid=4126, Unknown=0, NotChecked=0, Total=5852 [2020-11-12 03:39:06,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5281 states. [2020-11-12 03:39:06,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5281 to 3012. [2020-11-12 03:39:06,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3012 states, 2948 states have (on average 1.8225915875169607) internal successors, (5373), 3011 states have internal predecessors, (5373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:06,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3012 states to 3012 states and 5373 transitions. [2020-11-12 03:39:06,146 INFO L78 Accepts]: Start accepts. Automaton has 3012 states and 5373 transitions. Word has length 141 [2020-11-12 03:39:06,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:39:06,146 INFO L481 AbstractCegarLoop]: Abstraction has 3012 states and 5373 transitions. [2020-11-12 03:39:06,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:06,146 INFO L276 IsEmpty]: Start isEmpty. Operand 3012 states and 5373 transitions. [2020-11-12 03:39:06,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:39:06,148 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:39:06,148 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:39:06,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 275 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable279 [2020-11-12 03:39:06,349 INFO L429 AbstractCegarLoop]: === Iteration 281 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:39:06,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:39:06,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1117597458, now seen corresponding path program 270 times [2020-11-12 03:39:06,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:39:06,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84734149] [2020-11-12 03:39:06,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:39:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:07,161 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:07,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84734149] [2020-11-12 03:39:07,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075383659] [2020-11-12 03:39:07,162 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 276 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 276 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:07,268 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-11-12 03:39:07,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:39:07,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:39:07,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:39:07,422 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:39:07,439 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:07,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:39:07,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-11-12 03:39:07,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077058928] [2020-11-12 03:39:07,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:39:07,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:39:07,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:39:07,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:39:07,440 INFO L87 Difference]: Start difference. First operand 3012 states and 5373 transitions. Second operand has 30 states, 30 states have (on average 4.833333333333333) internal successors, (145), 30 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:11,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:39:11,359 INFO L93 Difference]: Finished difference Result 4946 states and 8547 transitions. [2020-11-12 03:39:11,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-11-12 03:39:11,361 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.833333333333333) internal successors, (145), 30 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:39:11,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:39:11,365 INFO L225 Difference]: With dead ends: 4946 [2020-11-12 03:39:11,365 INFO L226 Difference]: Without dead ends: 4374 [2020-11-12 03:39:11,366 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1839 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1676, Invalid=5130, Unknown=0, NotChecked=0, Total=6806 [2020-11-12 03:39:11,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4374 states. [2020-11-12 03:39:11,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4374 to 2907. [2020-11-12 03:39:11,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2907 states, 2843 states have (on average 1.8167428772423497) internal successors, (5165), 2906 states have internal predecessors, (5165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:11,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2907 states to 2907 states and 5165 transitions. [2020-11-12 03:39:11,403 INFO L78 Accepts]: Start accepts. Automaton has 2907 states and 5165 transitions. Word has length 141 [2020-11-12 03:39:11,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:39:11,404 INFO L481 AbstractCegarLoop]: Abstraction has 2907 states and 5165 transitions. [2020-11-12 03:39:11,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.833333333333333) internal successors, (145), 30 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:11,404 INFO L276 IsEmpty]: Start isEmpty. Operand 2907 states and 5165 transitions. [2020-11-12 03:39:11,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:39:11,406 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:39:11,406 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:39:11,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 276 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable280 [2020-11-12 03:39:11,607 INFO L429 AbstractCegarLoop]: === Iteration 282 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:39:11,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:39:11,608 INFO L82 PathProgramCache]: Analyzing trace with hash 524878084, now seen corresponding path program 271 times [2020-11-12 03:39:11,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:39:11,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123446541] [2020-11-12 03:39:11,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:39:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:12,639 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:12,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123446541] [2020-11-12 03:39:12,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566051916] [2020-11-12 03:39:12,639 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 277 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 277 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:12,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:12,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:39:12,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:39:12,834 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:39:12,847 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:39:12,878 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:12,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:39:12,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 32 [2020-11-12 03:39:12,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242258707] [2020-11-12 03:39:12,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-11-12 03:39:12,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:39:12,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-12 03:39:12,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=770, Unknown=0, NotChecked=0, Total=992 [2020-11-12 03:39:12,879 INFO L87 Difference]: Start difference. First operand 2907 states and 5165 transitions. Second operand has 32 states, 32 states have (on average 5.21875) internal successors, (167), 32 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:14,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:39:14,929 INFO L93 Difference]: Finished difference Result 4265 states and 7609 transitions. [2020-11-12 03:39:14,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-12 03:39:14,931 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.21875) internal successors, (167), 32 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:39:14,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:39:14,936 INFO L225 Difference]: With dead ends: 4265 [2020-11-12 03:39:14,936 INFO L226 Difference]: Without dead ends: 3931 [2020-11-12 03:39:14,936 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1020, Invalid=2762, Unknown=0, NotChecked=0, Total=3782 [2020-11-12 03:39:14,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2020-11-12 03:39:14,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 2982. [2020-11-12 03:39:14,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2982 states, 2918 states have (on average 1.82145305003427) internal successors, (5315), 2981 states have internal predecessors, (5315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:14,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 5315 transitions. [2020-11-12 03:39:14,971 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 5315 transitions. Word has length 146 [2020-11-12 03:39:14,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:39:14,971 INFO L481 AbstractCegarLoop]: Abstraction has 2982 states and 5315 transitions. [2020-11-12 03:39:14,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.21875) internal successors, (167), 32 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:14,971 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 5315 transitions. [2020-11-12 03:39:14,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:39:14,974 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:39:14,974 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:39:15,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281,277 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:15,174 INFO L429 AbstractCegarLoop]: === Iteration 283 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:39:15,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:39:15,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1598074278, now seen corresponding path program 272 times [2020-11-12 03:39:15,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:39:15,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829869301] [2020-11-12 03:39:15,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:39:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:16,251 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:16,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829869301] [2020-11-12 03:39:16,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017099121] [2020-11-12 03:39:16,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 278 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 278 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:16,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:39:16,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:39:16,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:39:16,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:39:16,377 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:39:16,407 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:16,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:39:16,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2020-11-12 03:39:16,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076165645] [2020-11-12 03:39:16,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:39:16,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:39:16,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:39:16,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:39:16,408 INFO L87 Difference]: Start difference. First operand 2982 states and 5315 transitions. Second operand has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:18,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:39:18,116 INFO L93 Difference]: Finished difference Result 5159 states and 9590 transitions. [2020-11-12 03:39:18,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-12 03:39:18,118 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:39:18,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:39:18,123 INFO L225 Difference]: With dead ends: 5159 [2020-11-12 03:39:18,123 INFO L226 Difference]: Without dead ends: 4889 [2020-11-12 03:39:18,124 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=854, Invalid=2226, Unknown=0, NotChecked=0, Total=3080 [2020-11-12 03:39:18,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4889 states. [2020-11-12 03:39:18,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4889 to 3042. [2020-11-12 03:39:18,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3042 states, 2978 states have (on average 1.8132975151108126) internal successors, (5400), 3041 states have internal predecessors, (5400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:18,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3042 states to 3042 states and 5400 transitions. [2020-11-12 03:39:18,163 INFO L78 Accepts]: Start accepts. Automaton has 3042 states and 5400 transitions. Word has length 146 [2020-11-12 03:39:18,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:39:18,163 INFO L481 AbstractCegarLoop]: Abstraction has 3042 states and 5400 transitions. [2020-11-12 03:39:18,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:18,163 INFO L276 IsEmpty]: Start isEmpty. Operand 3042 states and 5400 transitions. [2020-11-12 03:39:18,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:39:18,166 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:39:18,166 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:39:18,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 278 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable282 [2020-11-12 03:39:18,366 INFO L429 AbstractCegarLoop]: === Iteration 284 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:39:18,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:39:18,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1709040858, now seen corresponding path program 273 times [2020-11-12 03:39:18,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:39:18,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125740130] [2020-11-12 03:39:18,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:39:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:19,511 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:19,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125740130] [2020-11-12 03:39:19,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236606324] [2020-11-12 03:39:19,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 279 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 279 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:19,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-11-12 03:39:19,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:39:19,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:39:19,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:39:19,680 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:39:19,704 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:39:19,735 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:19,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:39:19,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2020-11-12 03:39:19,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964148174] [2020-11-12 03:39:19,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:39:19,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:39:19,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:39:19,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=690, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:39:19,736 INFO L87 Difference]: Start difference. First operand 3042 states and 5400 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:21,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:39:21,755 INFO L93 Difference]: Finished difference Result 5089 states and 9425 transitions. [2020-11-12 03:39:21,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-12 03:39:21,757 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:39:21,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:39:21,761 INFO L225 Difference]: With dead ends: 5089 [2020-11-12 03:39:21,761 INFO L226 Difference]: Without dead ends: 4819 [2020-11-12 03:39:21,761 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2020-11-12 03:39:21,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4819 states. [2020-11-12 03:39:21,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4819 to 3067. [2020-11-12 03:39:21,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3067 states, 3003 states have (on average 1.8065268065268065) internal successors, (5425), 3066 states have internal predecessors, (5425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:21,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3067 states to 3067 states and 5425 transitions. [2020-11-12 03:39:21,799 INFO L78 Accepts]: Start accepts. Automaton has 3067 states and 5425 transitions. Word has length 146 [2020-11-12 03:39:21,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:39:21,799 INFO L481 AbstractCegarLoop]: Abstraction has 3067 states and 5425 transitions. [2020-11-12 03:39:21,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:21,799 INFO L276 IsEmpty]: Start isEmpty. Operand 3067 states and 5425 transitions. [2020-11-12 03:39:21,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:39:21,802 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:39:21,802 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:39:22,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283,279 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:22,003 INFO L429 AbstractCegarLoop]: === Iteration 285 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:39:22,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:39:22,003 INFO L82 PathProgramCache]: Analyzing trace with hash -217079106, now seen corresponding path program 274 times [2020-11-12 03:39:22,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:39:22,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175772017] [2020-11-12 03:39:22,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:39:22,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:23,021 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:23,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175772017] [2020-11-12 03:39:23,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550376165] [2020-11-12 03:39:23,022 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 280 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 280 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:23,119 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:39:23,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:39:23,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-12 03:39:23,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:39:23,146 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:39:23,174 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:23,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:39:23,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2020-11-12 03:39:23,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180729463] [2020-11-12 03:39:23,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:39:23,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:39:23,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:39:23,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:39:23,176 INFO L87 Difference]: Start difference. First operand 3067 states and 5425 transitions. Second operand has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:25,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:39:25,012 INFO L93 Difference]: Finished difference Result 5089 states and 9400 transitions. [2020-11-12 03:39:25,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 03:39:25,016 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:39:25,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:39:25,020 INFO L225 Difference]: With dead ends: 5089 [2020-11-12 03:39:25,021 INFO L226 Difference]: Without dead ends: 4819 [2020-11-12 03:39:25,021 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=855, Invalid=2451, Unknown=0, NotChecked=0, Total=3306 [2020-11-12 03:39:25,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4819 states. [2020-11-12 03:39:25,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4819 to 3092. [2020-11-12 03:39:25,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:25,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:39:25,060 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:39:25,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:39:25,060 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:39:25,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:25,060 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:39:25,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:39:25,062 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:39:25,062 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:39:25,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284,280 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:25,263 INFO L429 AbstractCegarLoop]: === Iteration 286 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:39:25,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:39:25,264 INFO L82 PathProgramCache]: Analyzing trace with hash 934937086, now seen corresponding path program 275 times [2020-11-12 03:39:25,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:39:25,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331012187] [2020-11-12 03:39:25,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:39:25,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:26,325 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:26,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331012187] [2020-11-12 03:39:26,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52058847] [2020-11-12 03:39:26,325 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 281 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 281 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:26,431 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2020-11-12 03:39:26,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:39:26,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:39:26,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:39:26,492 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:39:26,519 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:39:26,553 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:26,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:39:26,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2020-11-12 03:39:26,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839194999] [2020-11-12 03:39:26,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:39:26,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:39:26,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:39:26,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=709, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:39:26,554 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:28,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:39:28,725 INFO L93 Difference]: Finished difference Result 5064 states and 9325 transitions. [2020-11-12 03:39:28,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-12 03:39:28,727 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:39:28,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:39:28,732 INFO L225 Difference]: With dead ends: 5064 [2020-11-12 03:39:28,732 INFO L226 Difference]: Without dead ends: 4794 [2020-11-12 03:39:28,733 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=938, Invalid=2844, Unknown=0, NotChecked=0, Total=3782 [2020-11-12 03:39:28,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4794 states. [2020-11-12 03:39:28,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4794 to 3092. [2020-11-12 03:39:28,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:28,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:39:28,771 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:39:28,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:39:28,772 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:39:28,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:28,772 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:39:28,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:39:28,774 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:39:28,774 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:39:28,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285,281 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:28,975 INFO L429 AbstractCegarLoop]: === Iteration 287 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:39:28,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:39:28,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1110758628, now seen corresponding path program 276 times [2020-11-12 03:39:28,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:39:28,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613077001] [2020-11-12 03:39:28,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:39:28,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:29,959 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:29,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613077001] [2020-11-12 03:39:29,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593137984] [2020-11-12 03:39:29,959 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 282 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 282 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:30,069 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-12 03:39:30,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:39:30,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:39:30,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:39:30,099 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:39:30,126 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:30,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:39:30,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2020-11-12 03:39:30,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000284927] [2020-11-12 03:39:30,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:39:30,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:39:30,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:39:30,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:39:30,127 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:32,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:39:32,135 INFO L93 Difference]: Finished difference Result 5014 states and 9225 transitions. [2020-11-12 03:39:32,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 03:39:32,137 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:39:32,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:39:32,143 INFO L225 Difference]: With dead ends: 5014 [2020-11-12 03:39:32,143 INFO L226 Difference]: Without dead ends: 4744 [2020-11-12 03:39:32,143 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=872, Invalid=2668, Unknown=0, NotChecked=0, Total=3540 [2020-11-12 03:39:32,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4744 states. [2020-11-12 03:39:32,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4744 to 3092. [2020-11-12 03:39:32,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:32,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:39:32,181 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:39:32,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:39:32,182 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:39:32,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:32,182 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:39:32,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:39:32,184 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:39:32,184 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:39:32,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286,282 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:32,385 INFO L429 AbstractCegarLoop]: === Iteration 288 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:39:32,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:39:32,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1429759396, now seen corresponding path program 277 times [2020-11-12 03:39:32,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:39:32,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402492674] [2020-11-12 03:39:32,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:39:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:33,426 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:33,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402492674] [2020-11-12 03:39:33,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592779872] [2020-11-12 03:39:33,426 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 283 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 283 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:33,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:33,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:39:33,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:39:33,583 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:39:33,610 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:39:33,637 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:33,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:39:33,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2020-11-12 03:39:33,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885179517] [2020-11-12 03:39:33,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:39:33,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:39:33,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:39:33,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=724, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:39:33,638 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:36,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:39:36,114 INFO L93 Difference]: Finished difference Result 4964 states and 9125 transitions. [2020-11-12 03:39:36,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-11-12 03:39:36,116 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:39:36,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:39:36,122 INFO L225 Difference]: With dead ends: 4964 [2020-11-12 03:39:36,122 INFO L226 Difference]: Without dead ends: 4694 [2020-11-12 03:39:36,122 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 811 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=963, Invalid=3069, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 03:39:36,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4694 states. [2020-11-12 03:39:36,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4694 to 3092. [2020-11-12 03:39:36,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:36,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:39:36,161 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:39:36,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:39:36,161 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:39:36,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:36,161 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:39:36,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:39:36,164 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:39:36,164 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:39:36,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 283 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable287 [2020-11-12 03:39:36,365 INFO L429 AbstractCegarLoop]: === Iteration 289 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:39:36,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:39:36,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1428549882, now seen corresponding path program 278 times [2020-11-12 03:39:36,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:39:36,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629819270] [2020-11-12 03:39:36,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:39:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:37,291 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:37,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629819270] [2020-11-12 03:39:37,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031324386] [2020-11-12 03:39:37,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 284 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 284 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:37,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:39:37,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:39:37,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:39:37,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:39:37,421 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:39:37,457 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:37,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:39:37,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2020-11-12 03:39:37,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828415087] [2020-11-12 03:39:37,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:39:37,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:39:37,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:39:37,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:39:37,458 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:39,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:39:39,606 INFO L93 Difference]: Finished difference Result 4914 states and 9025 transitions. [2020-11-12 03:39:39,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 03:39:39,608 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:39:39,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:39:39,613 INFO L225 Difference]: With dead ends: 4914 [2020-11-12 03:39:39,613 INFO L226 Difference]: Without dead ends: 4644 [2020-11-12 03:39:39,614 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=905, Invalid=2877, Unknown=0, NotChecked=0, Total=3782 [2020-11-12 03:39:39,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4644 states. [2020-11-12 03:39:39,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4644 to 3092. [2020-11-12 03:39:39,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:39,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:39:39,653 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:39:39,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:39:39,653 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:39:39,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:39,653 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:39:39,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:39:39,656 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:39:39,656 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:39:39,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 284 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable288 [2020-11-12 03:39:39,856 INFO L429 AbstractCegarLoop]: === Iteration 290 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:39:39,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:39:39,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1228378054, now seen corresponding path program 279 times [2020-11-12 03:39:39,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:39:39,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151309743] [2020-11-12 03:39:39,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:39:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:40,844 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:40,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151309743] [2020-11-12 03:39:40,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658925103] [2020-11-12 03:39:40,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 285 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 285 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:40,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-11-12 03:39:40,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:39:40,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 47 conjunts are in the unsatisfiable core [2020-11-12 03:39:40,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:39:41,044 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:39:41,091 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:41,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:39:41,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2020-11-12 03:39:41,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326251107] [2020-11-12 03:39:41,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:39:41,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:39:41,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:39:41,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=735, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:39:41,092 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:43,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:39:43,636 INFO L93 Difference]: Finished difference Result 4864 states and 8925 transitions. [2020-11-12 03:39:43,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-11-12 03:39:43,638 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:39:43,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:39:43,644 INFO L225 Difference]: With dead ends: 4864 [2020-11-12 03:39:43,644 INFO L226 Difference]: Without dead ends: 4594 [2020-11-12 03:39:43,644 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=914, Invalid=3118, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 03:39:43,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4594 states. [2020-11-12 03:39:43,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4594 to 3092. [2020-11-12 03:39:43,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:43,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:39:43,684 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:39:43,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:39:43,684 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:39:43,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:43,684 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:39:43,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:39:43,686 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:39:43,686 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:39:43,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 285 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable289 [2020-11-12 03:39:43,887 INFO L429 AbstractCegarLoop]: === Iteration 291 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:39:43,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:39:43,888 INFO L82 PathProgramCache]: Analyzing trace with hash 235328600, now seen corresponding path program 280 times [2020-11-12 03:39:43,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:39:43,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338942467] [2020-11-12 03:39:43,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:39:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:44,814 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:44,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338942467] [2020-11-12 03:39:44,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732988627] [2020-11-12 03:39:44,814 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 286 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 286 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:44,912 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:39:44,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:39:44,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-12 03:39:44,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:39:44,965 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:39:45,002 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:45,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:39:45,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2020-11-12 03:39:45,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520444894] [2020-11-12 03:39:45,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:39:45,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:39:45,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:39:45,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:39:45,004 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:47,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:39:47,403 INFO L93 Difference]: Finished difference Result 4814 states and 8825 transitions. [2020-11-12 03:39:47,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 03:39:47,405 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:39:47,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:39:47,410 INFO L225 Difference]: With dead ends: 4814 [2020-11-12 03:39:47,411 INFO L226 Difference]: Without dead ends: 4544 [2020-11-12 03:39:47,411 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 882 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=954, Invalid=3078, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 03:39:47,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4544 states. [2020-11-12 03:39:47,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4544 to 3092. [2020-11-12 03:39:47,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:47,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:39:47,449 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:39:47,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:39:47,450 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:39:47,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:47,450 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:39:47,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:39:47,452 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:39:47,452 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:39:47,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290,286 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:47,653 INFO L429 AbstractCegarLoop]: === Iteration 292 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:39:47,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:39:47,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1235444632, now seen corresponding path program 281 times [2020-11-12 03:39:47,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:39:47,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521003533] [2020-11-12 03:39:47,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:39:47,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:48,638 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:48,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521003533] [2020-11-12 03:39:48,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538074187] [2020-11-12 03:39:48,638 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 287 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 287 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:48,740 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2020-11-12 03:39:48,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:39:48,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:39:48,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:39:48,802 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:39:48,832 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:39:48,858 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:48,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:39:48,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2020-11-12 03:39:48,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992642856] [2020-11-12 03:39:48,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:39:48,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:39:48,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:39:48,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:39:48,859 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:51,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:39:51,762 INFO L93 Difference]: Finished difference Result 4764 states and 8725 transitions. [2020-11-12 03:39:51,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-11-12 03:39:51,764 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:39:51,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:39:51,769 INFO L225 Difference]: With dead ends: 4764 [2020-11-12 03:39:51,769 INFO L226 Difference]: Without dead ends: 4494 [2020-11-12 03:39:51,770 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 999 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1061, Invalid=3495, Unknown=0, NotChecked=0, Total=4556 [2020-11-12 03:39:51,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4494 states. [2020-11-12 03:39:51,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4494 to 3092. [2020-11-12 03:39:51,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:51,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:39:51,811 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:39:51,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:39:51,811 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:39:51,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:51,811 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:39:51,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:39:51,814 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:39:51,814 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:39:52,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291,287 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:52,014 INFO L429 AbstractCegarLoop]: === Iteration 293 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:39:52,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:39:52,015 INFO L82 PathProgramCache]: Analyzing trace with hash 107787574, now seen corresponding path program 282 times [2020-11-12 03:39:52,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:39:52,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854642049] [2020-11-12 03:39:52,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:39:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:52,927 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:52,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854642049] [2020-11-12 03:39:52,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325005229] [2020-11-12 03:39:52,927 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 288 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 288 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:53,036 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-12 03:39:53,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:39:53,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:39:53,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:39:53,075 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:39:53,099 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:53,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:39:53,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2020-11-12 03:39:53,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733327026] [2020-11-12 03:39:53,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:39:53,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:39:53,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:39:53,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:39:53,101 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:55,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:39:55,741 INFO L93 Difference]: Finished difference Result 4714 states and 8625 transitions. [2020-11-12 03:39:55,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 03:39:55,743 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:39:55,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:39:55,748 INFO L225 Difference]: With dead ends: 4714 [2020-11-12 03:39:55,748 INFO L226 Difference]: Without dead ends: 4444 [2020-11-12 03:39:55,749 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 975 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1019, Invalid=3271, Unknown=0, NotChecked=0, Total=4290 [2020-11-12 03:39:55,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4444 states. [2020-11-12 03:39:55,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4444 to 3092. [2020-11-12 03:39:55,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:55,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:39:55,785 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:39:55,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:39:55,786 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:39:55,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:55,786 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:39:55,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:39:55,788 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:39:55,788 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:39:55,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292,288 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:55,989 INFO L429 AbstractCegarLoop]: === Iteration 294 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:39:55,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:39:55,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1515672694, now seen corresponding path program 283 times [2020-11-12 03:39:55,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:39:55,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23495197] [2020-11-12 03:39:55,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:39:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:56,947 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:56,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23495197] [2020-11-12 03:39:56,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087395642] [2020-11-12 03:39:56,948 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 289 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 289 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:57,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:39:57,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:39:57,107 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:39:57,142 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:39:57,166 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:57,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:39:57,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2020-11-12 03:39:57,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485562644] [2020-11-12 03:39:57,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:39:57,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:39:57,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:39:57,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=745, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:39:57,168 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:00,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:40:00,312 INFO L93 Difference]: Finished difference Result 4664 states and 8525 transitions. [2020-11-12 03:40:00,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-11-12 03:40:00,314 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:40:00,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:40:00,318 INFO L225 Difference]: With dead ends: 4664 [2020-11-12 03:40:00,319 INFO L226 Difference]: Without dead ends: 4394 [2020-11-12 03:40:00,319 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1134, Invalid=3696, Unknown=0, NotChecked=0, Total=4830 [2020-11-12 03:40:00,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4394 states. [2020-11-12 03:40:00,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4394 to 3092. [2020-11-12 03:40:00,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:00,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:40:00,358 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:40:00,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:40:00,358 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:40:00,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:00,358 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:40:00,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:40:00,360 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:40:00,360 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:40:00,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293,289 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:00,561 INFO L429 AbstractCegarLoop]: === Iteration 295 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:40:00,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:40:00,562 INFO L82 PathProgramCache]: Analyzing trace with hash 594441108, now seen corresponding path program 284 times [2020-11-12 03:40:00,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:40:00,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817939463] [2020-11-12 03:40:00,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:40:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:40:01,442 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:01,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817939463] [2020-11-12 03:40:01,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409596819] [2020-11-12 03:40:01,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 290 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 290 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:01,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:40:01,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:40:01,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:40:01,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:40:01,581 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:40:01,605 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:01,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:40:01,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2020-11-12 03:40:01,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157911173] [2020-11-12 03:40:01,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:40:01,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:40:01,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:40:01,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:40:01,606 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:04,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:40:04,293 INFO L93 Difference]: Finished difference Result 4614 states and 8425 transitions. [2020-11-12 03:40:04,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-12 03:40:04,294 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:40:04,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:40:04,299 INFO L225 Difference]: With dead ends: 4614 [2020-11-12 03:40:04,300 INFO L226 Difference]: Without dead ends: 4344 [2020-11-12 03:40:04,300 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1072 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1100, Invalid=3456, Unknown=0, NotChecked=0, Total=4556 [2020-11-12 03:40:04,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4344 states. [2020-11-12 03:40:04,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4344 to 3092. [2020-11-12 03:40:04,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:04,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:40:04,337 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:40:04,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:40:04,337 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:40:04,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:04,337 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:40:04,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:40:04,340 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:40:04,340 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:40:04,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294,290 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:04,540 INFO L429 AbstractCegarLoop]: === Iteration 296 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:40:04,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:40:04,541 INFO L82 PathProgramCache]: Analyzing trace with hash -419749164, now seen corresponding path program 285 times [2020-11-12 03:40:04,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:40:04,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877242123] [2020-11-12 03:40:04,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:40:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:40:05,473 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:05,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877242123] [2020-11-12 03:40:05,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210975517] [2020-11-12 03:40:05,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 291 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 291 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:05,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-11-12 03:40:05,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:40:05,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 41 conjunts are in the unsatisfiable core [2020-11-12 03:40:05,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:40:05,682 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:40:05,706 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:05,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:40:05,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2020-11-12 03:40:05,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338049016] [2020-11-12 03:40:05,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:40:05,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:40:05,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:40:05,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:40:05,707 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:08,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:40:08,871 INFO L93 Difference]: Finished difference Result 4564 states and 8325 transitions. [2020-11-12 03:40:08,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-11-12 03:40:08,873 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:40:08,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:40:08,879 INFO L225 Difference]: With dead ends: 4564 [2020-11-12 03:40:08,879 INFO L226 Difference]: Without dead ends: 4294 [2020-11-12 03:40:08,880 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1095 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1079, Invalid=3751, Unknown=0, NotChecked=0, Total=4830 [2020-11-12 03:40:08,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4294 states. [2020-11-12 03:40:08,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4294 to 3092. [2020-11-12 03:40:08,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:08,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:40:08,918 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:40:08,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:40:08,918 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:40:08,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:08,918 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:40:08,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:40:08,920 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:40:08,921 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:40:09,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295,291 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:09,121 INFO L429 AbstractCegarLoop]: === Iteration 297 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:40:09,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:40:09,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1891963022, now seen corresponding path program 286 times [2020-11-12 03:40:09,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:40:09,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360791404] [2020-11-12 03:40:09,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:40:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:40:10,012 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:10,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360791404] [2020-11-12 03:40:10,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71913804] [2020-11-12 03:40:10,012 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 292 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 292 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:10,108 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:40:10,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:40:10,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-12 03:40:10,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:40:10,152 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:40:10,173 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:10,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:40:10,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2020-11-12 03:40:10,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486147908] [2020-11-12 03:40:10,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:40:10,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:40:10,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:40:10,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:40:10,175 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:13,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:40:13,033 INFO L93 Difference]: Finished difference Result 4514 states and 8225 transitions. [2020-11-12 03:40:13,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-12 03:40:13,035 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:40:13,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:40:13,040 INFO L225 Difference]: With dead ends: 4514 [2020-11-12 03:40:13,040 INFO L226 Difference]: Without dead ends: 4244 [2020-11-12 03:40:13,041 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1197, Invalid=3633, Unknown=0, NotChecked=0, Total=4830 [2020-11-12 03:40:13,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4244 states. [2020-11-12 03:40:13,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4244 to 3092. [2020-11-12 03:40:13,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:13,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:40:13,078 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:40:13,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:40:13,078 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:40:13,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:13,079 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:40:13,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:40:13,081 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:40:13,081 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:40:13,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296,292 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:13,282 INFO L429 AbstractCegarLoop]: === Iteration 298 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:40:13,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:40:13,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1925033650, now seen corresponding path program 287 times [2020-11-12 03:40:13,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:40:13,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309914442] [2020-11-12 03:40:13,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:40:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:40:14,190 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:14,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309914442] [2020-11-12 03:40:14,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331227655] [2020-11-12 03:40:14,190 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 293 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 293 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:14,292 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2020-11-12 03:40:14,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:40:14,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:40:14,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:40:14,356 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:40:14,394 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:40:14,416 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:14,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:40:14,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2020-11-12 03:40:14,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714463583] [2020-11-12 03:40:14,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:40:14,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:40:14,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:40:14,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=739, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:40:14,417 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:18,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:40:18,070 INFO L93 Difference]: Finished difference Result 4464 states and 8125 transitions. [2020-11-12 03:40:18,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-11-12 03:40:18,073 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:40:18,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:40:18,077 INFO L225 Difference]: With dead ends: 4464 [2020-11-12 03:40:18,077 INFO L226 Difference]: Without dead ends: 4194 [2020-11-12 03:40:18,077 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1311 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1328, Invalid=4074, Unknown=0, NotChecked=0, Total=5402 [2020-11-12 03:40:18,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4194 states. [2020-11-12 03:40:18,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4194 to 3092. [2020-11-12 03:40:18,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:18,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:40:18,114 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:40:18,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:40:18,114 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:40:18,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:18,114 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:40:18,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:40:18,117 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:40:18,117 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:40:18,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297,293 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:18,317 INFO L429 AbstractCegarLoop]: === Iteration 299 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:40:18,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:40:18,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1223096112, now seen corresponding path program 288 times [2020-11-12 03:40:18,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:40:18,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9345913] [2020-11-12 03:40:18,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:40:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:40:19,203 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:19,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9345913] [2020-11-12 03:40:19,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058817794] [2020-11-12 03:40:19,204 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 294 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 294 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:19,310 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-12 03:40:19,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:40:19,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:40:19,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:40:19,362 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:40:19,383 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:19,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:40:19,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2020-11-12 03:40:19,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471527714] [2020-11-12 03:40:19,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:40:19,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:40:19,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:40:19,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:40:19,385 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:22,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:40:22,445 INFO L93 Difference]: Finished difference Result 4414 states and 8025 transitions. [2020-11-12 03:40:22,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-11-12 03:40:22,447 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:40:22,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:40:22,451 INFO L225 Difference]: With dead ends: 4414 [2020-11-12 03:40:22,451 INFO L226 Difference]: Without dead ends: 4144 [2020-11-12 03:40:22,452 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1278 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1310, Invalid=3802, Unknown=0, NotChecked=0, Total=5112 [2020-11-12 03:40:22,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4144 states. [2020-11-12 03:40:22,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4144 to 3092. [2020-11-12 03:40:22,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:22,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:40:22,489 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:40:22,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:40:22,489 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:40:22,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:22,489 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:40:22,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:40:22,492 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:40:22,492 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:40:22,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 294 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable298 [2020-11-12 03:40:22,693 INFO L429 AbstractCegarLoop]: === Iteration 300 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:40:22,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:40:22,693 INFO L82 PathProgramCache]: Analyzing trace with hash 65394704, now seen corresponding path program 289 times [2020-11-12 03:40:22,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:40:22,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676112302] [2020-11-12 03:40:22,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:40:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:40:23,589 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:23,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676112302] [2020-11-12 03:40:23,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292315258] [2020-11-12 03:40:23,589 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 295 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 295 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:40:23,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:40:23,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:40:23,756 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:40:23,798 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:40:23,820 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:23,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:40:23,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2020-11-12 03:40:23,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554374336] [2020-11-12 03:40:23,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:40:23,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:40:23,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:40:23,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=730, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:40:23,822 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:27,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:40:27,681 INFO L93 Difference]: Finished difference Result 4364 states and 7925 transitions. [2020-11-12 03:40:27,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-11-12 03:40:27,683 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:40:27,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:40:27,687 INFO L225 Difference]: With dead ends: 4364 [2020-11-12 03:40:27,687 INFO L226 Difference]: Without dead ends: 4094 [2020-11-12 03:40:27,688 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1423 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1449, Invalid=4251, Unknown=0, NotChecked=0, Total=5700 [2020-11-12 03:40:27,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4094 states. [2020-11-12 03:40:27,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4094 to 3092. [2020-11-12 03:40:27,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:27,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:40:27,725 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:40:27,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:40:27,725 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:40:27,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:27,725 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:40:27,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:40:27,727 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:40:27,728 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:40:27,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299,295 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:27,928 INFO L429 AbstractCegarLoop]: === Iteration 301 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:40:27,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:40:27,929 INFO L82 PathProgramCache]: Analyzing trace with hash -915955794, now seen corresponding path program 290 times [2020-11-12 03:40:27,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:40:27,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270099860] [2020-11-12 03:40:27,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:40:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:40:28,802 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:28,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270099860] [2020-11-12 03:40:28,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779663343] [2020-11-12 03:40:28,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 296 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 296 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:28,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:40:28,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:40:28,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:40:28,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:40:28,969 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:40:28,989 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:28,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:40:28,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2020-11-12 03:40:28,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52203693] [2020-11-12 03:40:28,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:40:28,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:40:28,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:40:28,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:40:28,990 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:32,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:40:32,238 INFO L93 Difference]: Finished difference Result 4314 states and 7825 transitions. [2020-11-12 03:40:32,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-11-12 03:40:32,240 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:40:32,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:40:32,244 INFO L225 Difference]: With dead ends: 4314 [2020-11-12 03:40:32,245 INFO L226 Difference]: Without dead ends: 4044 [2020-11-12 03:40:32,245 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1387 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1439, Invalid=3963, Unknown=0, NotChecked=0, Total=5402 [2020-11-12 03:40:32,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4044 states. [2020-11-12 03:40:32,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4044 to 3092. [2020-11-12 03:40:32,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:32,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:40:32,282 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:40:32,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:40:32,283 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:40:32,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:32,283 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:40:32,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:40:32,285 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:40:32,285 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:40:32,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 296 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable300 [2020-11-12 03:40:32,486 INFO L429 AbstractCegarLoop]: === Iteration 302 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:40:32,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:40:32,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1580040466, now seen corresponding path program 291 times [2020-11-12 03:40:32,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:40:32,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973839309] [2020-11-12 03:40:32,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:40:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:40:33,412 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:33,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973839309] [2020-11-12 03:40:33,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176786979] [2020-11-12 03:40:33,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 297 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 297 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:33,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-11-12 03:40:33,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:40:33,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 35 conjunts are in the unsatisfiable core [2020-11-12 03:40:33,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:40:33,642 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:40:33,662 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:33,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:40:33,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2020-11-12 03:40:33,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982699044] [2020-11-12 03:40:33,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:40:33,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:40:33,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:40:33,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=717, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:40:33,663 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:37,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:40:37,428 INFO L93 Difference]: Finished difference Result 4264 states and 7725 transitions. [2020-11-12 03:40:37,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-11-12 03:40:37,430 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:40:37,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:40:37,434 INFO L225 Difference]: With dead ends: 4264 [2020-11-12 03:40:37,434 INFO L226 Difference]: Without dead ends: 3994 [2020-11-12 03:40:37,435 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1401 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1361, Invalid=4339, Unknown=0, NotChecked=0, Total=5700 [2020-11-12 03:40:37,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2020-11-12 03:40:37,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 3092. [2020-11-12 03:40:37,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:37,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:40:37,470 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:40:37,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:40:37,470 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:40:37,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:37,471 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:40:37,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:40:37,473 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:40:37,473 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:40:37,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 297 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable301 [2020-11-12 03:40:37,674 INFO L429 AbstractCegarLoop]: === Iteration 303 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:40:37,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:40:37,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1281518580, now seen corresponding path program 292 times [2020-11-12 03:40:37,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:40:37,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263973139] [2020-11-12 03:40:37,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:40:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:40:38,532 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:38,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263973139] [2020-11-12 03:40:38,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985915497] [2020-11-12 03:40:38,533 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 298 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 298 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:38,630 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:40:38,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:40:38,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-12 03:40:38,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:40:38,688 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:40:38,707 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:38,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:40:38,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2020-11-12 03:40:38,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491894317] [2020-11-12 03:40:38,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:40:38,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:40:38,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:40:38,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:40:38,708 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:42,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:40:42,074 INFO L93 Difference]: Finished difference Result 4214 states and 7625 transitions. [2020-11-12 03:40:42,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-11-12 03:40:42,076 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:40:42,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:40:42,081 INFO L225 Difference]: With dead ends: 4214 [2020-11-12 03:40:42,081 INFO L226 Difference]: Without dead ends: 3944 [2020-11-12 03:40:42,082 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1500 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1584, Invalid=4116, Unknown=0, NotChecked=0, Total=5700 [2020-11-12 03:40:42,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3944 states. [2020-11-12 03:40:42,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3944 to 3092. [2020-11-12 03:40:42,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:42,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:40:42,118 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:40:42,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:40:42,118 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:40:42,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:42,118 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:40:42,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:40:42,120 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:40:42,121 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:40:42,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 298 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable302 [2020-11-12 03:40:42,321 INFO L429 AbstractCegarLoop]: === Iteration 304 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:40:42,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:40:42,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1392149324, now seen corresponding path program 293 times [2020-11-12 03:40:42,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:40:42,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318393649] [2020-11-12 03:40:42,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:40:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:40:43,211 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:43,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318393649] [2020-11-12 03:40:43,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817183770] [2020-11-12 03:40:43,212 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 299 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 299 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:43,316 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2020-11-12 03:40:43,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:40:43,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:40:43,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:40:43,380 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:40:43,425 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:40:43,444 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:43,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:40:43,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2020-11-12 03:40:43,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596730302] [2020-11-12 03:40:43,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:40:43,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:40:43,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:40:43,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=700, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:40:43,446 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:47,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:40:47,736 INFO L93 Difference]: Finished difference Result 4229 states and 7642 transitions. [2020-11-12 03:40:47,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-11-12 03:40:47,739 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:40:47,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:40:47,743 INFO L225 Difference]: With dead ends: 4229 [2020-11-12 03:40:47,743 INFO L226 Difference]: Without dead ends: 3959 [2020-11-12 03:40:47,744 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1659 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1739, Invalid=4581, Unknown=0, NotChecked=0, Total=6320 [2020-11-12 03:40:47,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3959 states. [2020-11-12 03:40:47,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3959 to 3112. [2020-11-12 03:40:47,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3112 states, 3048 states have (on average 1.8028215223097113) internal successors, (5495), 3111 states have internal predecessors, (5495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:47,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3112 states to 3112 states and 5495 transitions. [2020-11-12 03:40:47,781 INFO L78 Accepts]: Start accepts. Automaton has 3112 states and 5495 transitions. Word has length 146 [2020-11-12 03:40:47,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:40:47,781 INFO L481 AbstractCegarLoop]: Abstraction has 3112 states and 5495 transitions. [2020-11-12 03:40:47,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:47,782 INFO L276 IsEmpty]: Start isEmpty. Operand 3112 states and 5495 transitions. [2020-11-12 03:40:47,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:40:47,784 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:40:47,784 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:40:47,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303,299 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:47,985 INFO L429 AbstractCegarLoop]: === Iteration 305 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:40:47,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:40:47,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1768727808, now seen corresponding path program 294 times [2020-11-12 03:40:47,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:40:47,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095457403] [2020-11-12 03:40:47,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:40:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:40:48,873 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:48,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095457403] [2020-11-12 03:40:48,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292007357] [2020-11-12 03:40:48,874 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 300 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 300 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:48,981 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-12 03:40:48,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:40:48,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:40:48,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:40:49,040 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:40:49,060 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:49,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:40:49,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2020-11-12 03:40:49,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856451336] [2020-11-12 03:40:49,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:40:49,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:40:49,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:40:49,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:40:49,061 INFO L87 Difference]: Start difference. First operand 3112 states and 5495 transitions. Second operand has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:52,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:40:52,589 INFO L93 Difference]: Finished difference Result 5291 states and 9079 transitions. [2020-11-12 03:40:52,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-11-12 03:40:52,591 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:40:52,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:40:52,596 INFO L225 Difference]: With dead ends: 5291 [2020-11-12 03:40:52,596 INFO L226 Difference]: Without dead ends: 5006 [2020-11-12 03:40:52,597 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1616 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1746, Invalid=4260, Unknown=0, NotChecked=0, Total=6006 [2020-11-12 03:40:52,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5006 states. [2020-11-12 03:40:52,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5006 to 3197. [2020-11-12 03:40:52,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3197 states, 3133 states have (on average 1.8171082030003192) internal successors, (5693), 3196 states have internal predecessors, (5693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:52,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 5693 transitions. [2020-11-12 03:40:52,655 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 5693 transitions. Word has length 146 [2020-11-12 03:40:52,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:40:52,655 INFO L481 AbstractCegarLoop]: Abstraction has 3197 states and 5693 transitions. [2020-11-12 03:40:52,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:52,655 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 5693 transitions. [2020-11-12 03:40:52,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:40:52,658 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:40:52,658 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:40:52,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 300 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable304 [2020-11-12 03:40:52,859 INFO L429 AbstractCegarLoop]: === Iteration 306 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:40:52,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:40:52,859 INFO L82 PathProgramCache]: Analyzing trace with hash -928750616, now seen corresponding path program 295 times [2020-11-12 03:40:52,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:40:52,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094975544] [2020-11-12 03:40:52,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:40:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:40:53,788 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:53,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094975544] [2020-11-12 03:40:53,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536708092] [2020-11-12 03:40:53,788 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 301 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 301 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:40:53,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:40:53,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:40:53,950 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:40:54,020 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:40:54,039 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:54,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:40:54,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-11-12 03:40:54,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152627763] [2020-11-12 03:40:54,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 03:40:54,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:40:54,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 03:40:54,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=736, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:40:54,040 INFO L87 Difference]: Start difference. First operand 3197 states and 5693 transitions. Second operand has 31 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:58,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:40:58,869 INFO L93 Difference]: Finished difference Result 4626 states and 8387 transitions. [2020-11-12 03:40:58,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-11-12 03:40:58,871 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:40:58,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:40:58,875 INFO L225 Difference]: With dead ends: 4626 [2020-11-12 03:40:58,875 INFO L226 Difference]: Without dead ends: 4054 [2020-11-12 03:40:58,876 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1969 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1989, Invalid=5321, Unknown=0, NotChecked=0, Total=7310 [2020-11-12 03:40:58,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4054 states. [2020-11-12 03:40:58,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4054 to 2562. [2020-11-12 03:40:58,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2562 states, 2498 states have (on average 1.7269815852682147) internal successors, (4314), 2561 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:58,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2562 states to 2562 states and 4314 transitions. [2020-11-12 03:40:58,908 INFO L78 Accepts]: Start accepts. Automaton has 2562 states and 4314 transitions. Word has length 146 [2020-11-12 03:40:58,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:40:58,908 INFO L481 AbstractCegarLoop]: Abstraction has 2562 states and 4314 transitions. [2020-11-12 03:40:58,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:58,908 INFO L276 IsEmpty]: Start isEmpty. Operand 2562 states and 4314 transitions. [2020-11-12 03:40:58,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 03:40:58,910 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:40:58,910 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:40:59,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305,301 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:59,111 INFO L429 AbstractCegarLoop]: === Iteration 307 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:40:59,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:40:59,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1599052647, now seen corresponding path program 296 times [2020-11-12 03:40:59,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:40:59,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664265781] [2020-11-12 03:40:59,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:40:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:41:00,276 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:00,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664265781] [2020-11-12 03:41:00,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450387426] [2020-11-12 03:41:00,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 302 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 302 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:00,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:41:00,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:41:00,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:41:00,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:41:00,419 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:41:00,451 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:00,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:41:00,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2020-11-12 03:41:00,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716205592] [2020-11-12 03:41:00,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:41:00,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:41:00,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:41:00,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=679, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:41:00,453 INFO L87 Difference]: Start difference. First operand 2562 states and 4314 transitions. Second operand has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:02,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:41:02,544 INFO L93 Difference]: Finished difference Result 4159 states and 7444 transitions. [2020-11-12 03:41:02,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-12 03:41:02,546 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 03:41:02,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:41:02,550 INFO L225 Difference]: With dead ends: 4159 [2020-11-12 03:41:02,551 INFO L226 Difference]: Without dead ends: 3889 [2020-11-12 03:41:02,551 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=935, Invalid=2605, Unknown=0, NotChecked=0, Total=3540 [2020-11-12 03:41:02,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-11-12 03:41:02,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2602. [2020-11-12 03:41:02,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2602 states, 2538 states have (on average 1.727344365642238) internal successors, (4384), 2601 states have internal predecessors, (4384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:02,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 4384 transitions. [2020-11-12 03:41:02,584 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 4384 transitions. Word has length 151 [2020-11-12 03:41:02,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:41:02,584 INFO L481 AbstractCegarLoop]: Abstraction has 2602 states and 4384 transitions. [2020-11-12 03:41:02,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:02,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 4384 transitions. [2020-11-12 03:41:02,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 03:41:02,586 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:41:02,587 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:41:02,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306,302 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:02,787 INFO L429 AbstractCegarLoop]: === Iteration 308 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:41:02,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:41:02,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1336101927, now seen corresponding path program 297 times [2020-11-12 03:41:02,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:41:02,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726142623] [2020-11-12 03:41:02,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:41:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:41:04,060 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:04,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726142623] [2020-11-12 03:41:04,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560765594] [2020-11-12 03:41:04,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 303 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 303 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:04,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2020-11-12 03:41:04,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:41:04,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:41:04,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:41:04,234 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:41:04,259 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:41:04,292 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:04,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:41:04,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2020-11-12 03:41:04,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458622881] [2020-11-12 03:41:04,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 03:41:04,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:41:04,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 03:41:04,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:41:04,293 INFO L87 Difference]: Start difference. First operand 2602 states and 4384 transitions. Second operand has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:06,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:41:06,625 INFO L93 Difference]: Finished difference Result 4744 states and 8594 transitions. [2020-11-12 03:41:06,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-12 03:41:06,627 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 03:41:06,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:41:06,632 INFO L225 Difference]: With dead ends: 4744 [2020-11-12 03:41:06,632 INFO L226 Difference]: Without dead ends: 4474 [2020-11-12 03:41:06,633 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=997, Invalid=2909, Unknown=0, NotChecked=0, Total=3906 [2020-11-12 03:41:06,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4474 states. [2020-11-12 03:41:06,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4474 to 2627. [2020-11-12 03:41:06,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2627 states, 2563 states have (on average 1.7319547405384315) internal successors, (4439), 2626 states have internal predecessors, (4439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:06,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 4439 transitions. [2020-11-12 03:41:06,668 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 4439 transitions. Word has length 151 [2020-11-12 03:41:06,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:41:06,668 INFO L481 AbstractCegarLoop]: Abstraction has 2627 states and 4439 transitions. [2020-11-12 03:41:06,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:06,669 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 4439 transitions. [2020-11-12 03:41:06,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 03:41:06,671 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:41:06,671 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:41:06,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307,303 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:06,871 INFO L429 AbstractCegarLoop]: === Iteration 309 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:41:06,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:41:06,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1466200201, now seen corresponding path program 298 times [2020-11-12 03:41:06,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:41:06,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005086909] [2020-11-12 03:41:06,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:41:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:41:08,031 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:08,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005086909] [2020-11-12 03:41:08,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91185966] [2020-11-12 03:41:08,032 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 304 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 304 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:08,131 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:41:08,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:41:08,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-12 03:41:08,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:41:08,163 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:41:08,195 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:08,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:41:08,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2020-11-12 03:41:08,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815996918] [2020-11-12 03:41:08,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:41:08,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:41:08,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:41:08,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=698, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:41:08,197 INFO L87 Difference]: Start difference. First operand 2627 states and 4439 transitions. Second operand has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:10,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:41:10,422 INFO L93 Difference]: Finished difference Result 4759 states and 8604 transitions. [2020-11-12 03:41:10,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 03:41:10,424 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 03:41:10,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:41:10,429 INFO L225 Difference]: With dead ends: 4759 [2020-11-12 03:41:10,429 INFO L226 Difference]: Without dead ends: 4489 [2020-11-12 03:41:10,429 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 828 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=991, Invalid=2915, Unknown=0, NotChecked=0, Total=3906 [2020-11-12 03:41:10,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2020-11-12 03:41:10,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 2652. [2020-11-12 03:41:10,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2652 states, 2588 states have (on average 1.7364760432766615) internal successors, (4494), 2651 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:10,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 4494 transitions. [2020-11-12 03:41:10,464 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 4494 transitions. Word has length 151 [2020-11-12 03:41:10,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:41:10,465 INFO L481 AbstractCegarLoop]: Abstraction has 2652 states and 4494 transitions. [2020-11-12 03:41:10,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:10,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 4494 transitions. [2020-11-12 03:41:10,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 03:41:10,467 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:41:10,467 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:41:10,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 304 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable308 [2020-11-12 03:41:10,668 INFO L429 AbstractCegarLoop]: === Iteration 310 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:41:10,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:41:10,668 INFO L82 PathProgramCache]: Analyzing trace with hash -314184009, now seen corresponding path program 299 times [2020-11-12 03:41:10,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:41:10,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901133459] [2020-11-12 03:41:10,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:41:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:41:11,885 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:11,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901133459] [2020-11-12 03:41:11,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472377325] [2020-11-12 03:41:11,886 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 305 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 305 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:11,994 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2020-11-12 03:41:11,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:41:11,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:41:11,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:41:12,061 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:41:12,091 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:41:12,122 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:12,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:41:12,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2020-11-12 03:41:12,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137875635] [2020-11-12 03:41:12,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 03:41:12,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:41:12,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 03:41:12,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:41:12,123 INFO L87 Difference]: Start difference. First operand 2652 states and 4494 transitions. Second operand has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:14,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:41:14,684 INFO L93 Difference]: Finished difference Result 4759 states and 8584 transitions. [2020-11-12 03:41:14,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-11-12 03:41:14,686 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 03:41:14,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:41:14,691 INFO L225 Difference]: With dead ends: 4759 [2020-11-12 03:41:14,691 INFO L226 Difference]: Without dead ends: 4489 [2020-11-12 03:41:14,692 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1013, Invalid=3147, Unknown=0, NotChecked=0, Total=4160 [2020-11-12 03:41:14,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2020-11-12 03:41:14,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 2677. [2020-11-12 03:41:14,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2677 states, 2613 states have (on average 1.7409108304630692) internal successors, (4549), 2676 states have internal predecessors, (4549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:14,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2677 states to 2677 states and 4549 transitions. [2020-11-12 03:41:14,740 INFO L78 Accepts]: Start accepts. Automaton has 2677 states and 4549 transitions. Word has length 151 [2020-11-12 03:41:14,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:41:14,740 INFO L481 AbstractCegarLoop]: Abstraction has 2677 states and 4549 transitions. [2020-11-12 03:41:14,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:14,740 INFO L276 IsEmpty]: Start isEmpty. Operand 2677 states and 4549 transitions. [2020-11-12 03:41:14,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 03:41:14,742 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:41:14,742 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:41:14,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 305 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable309 [2020-11-12 03:41:14,943 INFO L429 AbstractCegarLoop]: === Iteration 311 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:41:14,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:41:14,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1935087573, now seen corresponding path program 300 times [2020-11-12 03:41:14,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:41:14,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010610870] [2020-11-12 03:41:14,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:41:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:41:16,050 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:16,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010610870] [2020-11-12 03:41:16,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826027769] [2020-11-12 03:41:16,051 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 306 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 306 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:16,165 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2020-11-12 03:41:16,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:41:16,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:41:16,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:41:16,200 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:41:16,230 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:16,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:41:16,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2020-11-12 03:41:16,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925530257] [2020-11-12 03:41:16,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:41:16,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:41:16,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:41:16,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=713, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:41:16,231 INFO L87 Difference]: Start difference. First operand 2677 states and 4549 transitions. Second operand has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:18,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:41:18,617 INFO L93 Difference]: Finished difference Result 4759 states and 8564 transitions. [2020-11-12 03:41:18,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 03:41:18,619 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 03:41:18,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:41:18,624 INFO L225 Difference]: With dead ends: 4759 [2020-11-12 03:41:18,624 INFO L226 Difference]: Without dead ends: 4489 [2020-11-12 03:41:18,624 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 921 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1021, Invalid=3139, Unknown=0, NotChecked=0, Total=4160 [2020-11-12 03:41:18,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2020-11-12 03:41:18,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 2702. [2020-11-12 03:41:18,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2702 states, 2638 states have (on average 1.7452615617892342) internal successors, (4604), 2701 states have internal predecessors, (4604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:18,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2702 states to 2702 states and 4604 transitions. [2020-11-12 03:41:18,659 INFO L78 Accepts]: Start accepts. Automaton has 2702 states and 4604 transitions. Word has length 151 [2020-11-12 03:41:18,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:41:18,659 INFO L481 AbstractCegarLoop]: Abstraction has 2702 states and 4604 transitions. [2020-11-12 03:41:18,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:18,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2702 states and 4604 transitions. [2020-11-12 03:41:18,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 03:41:18,663 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:41:18,663 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:41:18,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 306 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable310 [2020-11-12 03:41:18,863 INFO L429 AbstractCegarLoop]: === Iteration 312 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:41:18,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:41:18,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1616086805, now seen corresponding path program 301 times [2020-11-12 03:41:18,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:41:18,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190997566] [2020-11-12 03:41:18,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:41:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:41:20,029 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:20,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190997566] [2020-11-12 03:41:20,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183905247] [2020-11-12 03:41:20,030 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 307 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 307 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:41:20,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:41:20,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:41:20,191 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:41:20,222 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:41:20,251 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:20,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:41:20,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2020-11-12 03:41:20,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243254605] [2020-11-12 03:41:20,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 03:41:20,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:41:20,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 03:41:20,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=779, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:41:20,252 INFO L87 Difference]: Start difference. First operand 2702 states and 4604 transitions. Second operand has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:23,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:41:23,036 INFO L93 Difference]: Finished difference Result 4759 states and 8544 transitions. [2020-11-12 03:41:23,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-11-12 03:41:23,038 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 03:41:23,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:41:23,043 INFO L225 Difference]: With dead ends: 4759 [2020-11-12 03:41:23,043 INFO L226 Difference]: Without dead ends: 4489 [2020-11-12 03:41:23,044 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1045, Invalid=3377, Unknown=0, NotChecked=0, Total=4422 [2020-11-12 03:41:23,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2020-11-12 03:41:23,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 2727. [2020-11-12 03:41:23,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2727 states, 2663 states have (on average 1.7495306045812993) internal successors, (4659), 2726 states have internal predecessors, (4659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:23,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 4659 transitions. [2020-11-12 03:41:23,079 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 4659 transitions. Word has length 151 [2020-11-12 03:41:23,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:41:23,079 INFO L481 AbstractCegarLoop]: Abstraction has 2727 states and 4659 transitions. [2020-11-12 03:41:23,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:23,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 4659 transitions. [2020-11-12 03:41:23,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 03:41:23,082 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:41:23,082 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:41:23,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 307 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable311 [2020-11-12 03:41:23,283 INFO L429 AbstractCegarLoop]: === Iteration 313 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:41:23,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:41:23,283 INFO L82 PathProgramCache]: Analyzing trace with hash 179428787, now seen corresponding path program 302 times [2020-11-12 03:41:23,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:41:23,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80441723] [2020-11-12 03:41:23,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:41:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:41:24,357 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:24,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80441723] [2020-11-12 03:41:24,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688219742] [2020-11-12 03:41:24,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 308 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 308 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:24,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:41:24,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:41:24,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:41:24,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:41:24,493 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:41:24,540 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:24,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:41:24,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2020-11-12 03:41:24,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68289855] [2020-11-12 03:41:24,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:41:24,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:41:24,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:41:24,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=724, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:41:24,541 INFO L87 Difference]: Start difference. First operand 2727 states and 4659 transitions. Second operand has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:27,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:41:27,090 INFO L93 Difference]: Finished difference Result 4759 states and 8524 transitions. [2020-11-12 03:41:27,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 03:41:27,093 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 03:41:27,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:41:27,098 INFO L225 Difference]: With dead ends: 4759 [2020-11-12 03:41:27,098 INFO L226 Difference]: Without dead ends: 4489 [2020-11-12 03:41:27,098 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1067, Invalid=3355, Unknown=0, NotChecked=0, Total=4422 [2020-11-12 03:41:27,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2020-11-12 03:41:27,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 2752. [2020-11-12 03:41:27,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2752 states, 2688 states have (on average 1.7537202380952381) internal successors, (4714), 2751 states have internal predecessors, (4714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:27,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2752 states to 2752 states and 4714 transitions. [2020-11-12 03:41:27,134 INFO L78 Accepts]: Start accepts. Automaton has 2752 states and 4714 transitions. Word has length 151 [2020-11-12 03:41:27,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:41:27,135 INFO L481 AbstractCegarLoop]: Abstraction has 2752 states and 4714 transitions. [2020-11-12 03:41:27,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:27,135 INFO L276 IsEmpty]: Start isEmpty. Operand 2752 states and 4714 transitions. [2020-11-12 03:41:27,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 03:41:27,137 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:41:27,137 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:41:27,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 308 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable312 [2020-11-12 03:41:27,338 INFO L429 AbstractCegarLoop]: === Iteration 314 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:41:27,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:41:27,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1817468147, now seen corresponding path program 303 times [2020-11-12 03:41:27,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:41:27,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853437343] [2020-11-12 03:41:27,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:41:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:41:28,462 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:28,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853437343] [2020-11-12 03:41:28,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209451633] [2020-11-12 03:41:28,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 309 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 309 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:28,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2020-11-12 03:41:28,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:41:28,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 48 conjunts are in the unsatisfiable core [2020-11-12 03:41:28,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:41:28,678 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:41:28,726 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:28,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:41:28,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2020-11-12 03:41:28,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635490075] [2020-11-12 03:41:28,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 03:41:28,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:41:28,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 03:41:28,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=789, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:41:28,727 INFO L87 Difference]: Start difference. First operand 2752 states and 4714 transitions. Second operand has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:31,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:41:31,744 INFO L93 Difference]: Finished difference Result 4759 states and 8504 transitions. [2020-11-12 03:41:31,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-11-12 03:41:31,746 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 03:41:31,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:41:31,752 INFO L225 Difference]: With dead ends: 4759 [2020-11-12 03:41:31,752 INFO L226 Difference]: Without dead ends: 4489 [2020-11-12 03:41:31,753 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1072, Invalid=3620, Unknown=0, NotChecked=0, Total=4692 [2020-11-12 03:41:31,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2020-11-12 03:41:31,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 2777. [2020-11-12 03:41:31,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2777 states, 2713 states have (on average 1.7578326575746406) internal successors, (4769), 2776 states have internal predecessors, (4769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:31,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2777 states to 2777 states and 4769 transitions. [2020-11-12 03:41:31,789 INFO L78 Accepts]: Start accepts. Automaton has 2777 states and 4769 transitions. Word has length 151 [2020-11-12 03:41:31,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:41:31,789 INFO L481 AbstractCegarLoop]: Abstraction has 2777 states and 4769 transitions. [2020-11-12 03:41:31,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:31,789 INFO L276 IsEmpty]: Start isEmpty. Operand 2777 states and 4769 transitions. [2020-11-12 03:41:31,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 03:41:31,791 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:41:31,791 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:41:31,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 309 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable313 [2020-11-12 03:41:31,992 INFO L429 AbstractCegarLoop]: === Iteration 315 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:41:31,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:41:31,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1013792495, now seen corresponding path program 304 times [2020-11-12 03:41:31,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:41:31,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180441757] [2020-11-12 03:41:31,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:41:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:41:33,061 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:33,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180441757] [2020-11-12 03:41:33,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251686835] [2020-11-12 03:41:33,061 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 310 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 310 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:33,159 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:41:33,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:41:33,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-12 03:41:33,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:41:33,201 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:41:33,230 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:33,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:41:33,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2020-11-12 03:41:33,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003021502] [2020-11-12 03:41:33,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:41:33,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:41:33,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:41:33,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:41:33,231 INFO L87 Difference]: Start difference. First operand 2777 states and 4769 transitions. Second operand has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:35,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:41:35,988 INFO L93 Difference]: Finished difference Result 4759 states and 8484 transitions. [2020-11-12 03:41:35,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-12 03:41:35,990 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 03:41:35,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:41:35,996 INFO L225 Difference]: With dead ends: 4759 [2020-11-12 03:41:35,996 INFO L226 Difference]: Without dead ends: 4489 [2020-11-12 03:41:35,996 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1129 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1129, Invalid=3563, Unknown=0, NotChecked=0, Total=4692 [2020-11-12 03:41:36,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2020-11-12 03:41:36,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 2802. [2020-11-12 03:41:36,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2802 states, 2738 states have (on average 1.7618699780861944) internal successors, (4824), 2801 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:36,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2802 states to 2802 states and 4824 transitions. [2020-11-12 03:41:36,036 INFO L78 Accepts]: Start accepts. Automaton has 2802 states and 4824 transitions. Word has length 151 [2020-11-12 03:41:36,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:41:36,036 INFO L481 AbstractCegarLoop]: Abstraction has 2802 states and 4824 transitions. [2020-11-12 03:41:36,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:36,036 INFO L276 IsEmpty]: Start isEmpty. Operand 2802 states and 4824 transitions. [2020-11-12 03:41:36,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 03:41:36,038 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:41:36,038 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:41:36,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 310 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable314 [2020-11-12 03:41:36,239 INFO L429 AbstractCegarLoop]: === Iteration 316 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:41:36,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:41:36,240 INFO L82 PathProgramCache]: Analyzing trace with hash -13676463, now seen corresponding path program 305 times [2020-11-12 03:41:36,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:41:36,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091675209] [2020-11-12 03:41:36,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:41:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:41:37,363 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:37,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091675209] [2020-11-12 03:41:37,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510373228] [2020-11-12 03:41:37,364 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 311 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 311 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:37,471 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2020-11-12 03:41:37,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:41:37,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:41:37,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:41:37,541 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:41:37,575 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:41:37,602 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:37,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:41:37,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2020-11-12 03:41:37,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932996384] [2020-11-12 03:41:37,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 03:41:37,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:41:37,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 03:41:37,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:41:37,603 INFO L87 Difference]: Start difference. First operand 2802 states and 4824 transitions. Second operand has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:40,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:41:40,856 INFO L93 Difference]: Finished difference Result 4759 states and 8464 transitions. [2020-11-12 03:41:40,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-11-12 03:41:40,858 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 03:41:40,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:41:40,864 INFO L225 Difference]: With dead ends: 4759 [2020-11-12 03:41:40,864 INFO L226 Difference]: Without dead ends: 4489 [2020-11-12 03:41:40,864 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1159 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1157, Invalid=3813, Unknown=0, NotChecked=0, Total=4970 [2020-11-12 03:41:40,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2020-11-12 03:41:40,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 2827. [2020-11-12 03:41:40,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2827 states, 2763 states have (on average 1.7658342381469416) internal successors, (4879), 2826 states have internal predecessors, (4879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:40,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2827 states to 2827 states and 4879 transitions. [2020-11-12 03:41:40,900 INFO L78 Accepts]: Start accepts. Automaton has 2827 states and 4879 transitions. Word has length 151 [2020-11-12 03:41:40,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:41:40,900 INFO L481 AbstractCegarLoop]: Abstraction has 2827 states and 4879 transitions. [2020-11-12 03:41:40,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:40,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2827 states and 4879 transitions. [2020-11-12 03:41:40,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 03:41:40,902 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:41:40,902 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:41:41,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315,311 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:41,103 INFO L429 AbstractCegarLoop]: === Iteration 317 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:41:41,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:41:41,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1141333521, now seen corresponding path program 306 times [2020-11-12 03:41:41,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:41:41,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104099703] [2020-11-12 03:41:41,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:41:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:41:42,135 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:42,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104099703] [2020-11-12 03:41:42,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835441635] [2020-11-12 03:41:42,136 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 312 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 312 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:42,248 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2020-11-12 03:41:42,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:41:42,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:41:42,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:41:42,293 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:41:42,319 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:42,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:41:42,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2020-11-12 03:41:42,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845682566] [2020-11-12 03:41:42,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:41:42,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:41:42,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:41:42,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:41:42,320 INFO L87 Difference]: Start difference. First operand 2827 states and 4879 transitions. Second operand has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:45,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:41:45,242 INFO L93 Difference]: Finished difference Result 4759 states and 8444 transitions. [2020-11-12 03:41:45,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-12 03:41:45,244 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 03:41:45,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:41:45,249 INFO L225 Difference]: With dead ends: 4759 [2020-11-12 03:41:45,249 INFO L226 Difference]: Without dead ends: 4489 [2020-11-12 03:41:45,250 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1239 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1207, Invalid=3763, Unknown=0, NotChecked=0, Total=4970 [2020-11-12 03:41:45,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2020-11-12 03:41:45,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 2852. [2020-11-12 03:41:45,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2852 states, 2788 states have (on average 1.7697274031563845) internal successors, (4934), 2851 states have internal predecessors, (4934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:45,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2852 states to 2852 states and 4934 transitions. [2020-11-12 03:41:45,287 INFO L78 Accepts]: Start accepts. Automaton has 2852 states and 4934 transitions. Word has length 151 [2020-11-12 03:41:45,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:41:45,287 INFO L481 AbstractCegarLoop]: Abstraction has 2852 states and 4934 transitions. [2020-11-12 03:41:45,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:45,287 INFO L276 IsEmpty]: Start isEmpty. Operand 2852 states and 4934 transitions. [2020-11-12 03:41:45,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 03:41:45,289 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:41:45,289 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:41:45,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 312 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable316 [2020-11-12 03:41:45,490 INFO L429 AbstractCegarLoop]: === Iteration 318 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:41:45,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:41:45,491 INFO L82 PathProgramCache]: Analyzing trace with hash 266551599, now seen corresponding path program 307 times [2020-11-12 03:41:45,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:41:45,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425416639] [2020-11-12 03:41:45,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:41:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:41:46,563 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:46,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425416639] [2020-11-12 03:41:46,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980511094] [2020-11-12 03:41:46,563 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 313 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 313 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:41:46,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:41:46,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:41:46,729 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:41:46,766 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:41:46,791 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:46,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:41:46,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2020-11-12 03:41:46,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271283111] [2020-11-12 03:41:46,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 03:41:46,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:41:46,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 03:41:46,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:41:46,793 INFO L87 Difference]: Start difference. First operand 2852 states and 4934 transitions. Second operand has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:50,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:41:50,280 INFO L93 Difference]: Finished difference Result 4759 states and 8424 transitions. [2020-11-12 03:41:50,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-11-12 03:41:50,282 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 03:41:50,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:41:50,287 INFO L225 Difference]: With dead ends: 4759 [2020-11-12 03:41:50,287 INFO L226 Difference]: Without dead ends: 4489 [2020-11-12 03:41:50,288 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1272 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1237, Invalid=4019, Unknown=0, NotChecked=0, Total=5256 [2020-11-12 03:41:50,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2020-11-12 03:41:50,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 2877. [2020-11-12 03:41:50,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2877 states, 2813 states have (on average 1.7735513686455742) internal successors, (4989), 2876 states have internal predecessors, (4989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:50,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2877 states to 2877 states and 4989 transitions. [2020-11-12 03:41:50,325 INFO L78 Accepts]: Start accepts. Automaton has 2877 states and 4989 transitions. Word has length 151 [2020-11-12 03:41:50,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:41:50,326 INFO L481 AbstractCegarLoop]: Abstraction has 2877 states and 4989 transitions. [2020-11-12 03:41:50,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:50,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2877 states and 4989 transitions. [2020-11-12 03:41:50,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 03:41:50,328 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:41:50,328 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:41:50,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317,313 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:50,529 INFO L429 AbstractCegarLoop]: === Iteration 319 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:41:50,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:41:50,529 INFO L82 PathProgramCache]: Analyzing trace with hash -654679987, now seen corresponding path program 308 times [2020-11-12 03:41:50,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:41:50,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181354035] [2020-11-12 03:41:50,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:41:50,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:41:51,528 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:51,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181354035] [2020-11-12 03:41:51,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43914543] [2020-11-12 03:41:51,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 314 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 314 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:51,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:41:51,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:41:51,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:41:51,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:41:51,698 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:41:51,723 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:51,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:41:51,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2020-11-12 03:41:51,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989022486] [2020-11-12 03:41:51,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:41:51,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:41:51,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:41:51,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=733, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:41:51,725 INFO L87 Difference]: Start difference. First operand 2877 states and 4989 transitions. Second operand has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:54,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:41:54,844 INFO L93 Difference]: Finished difference Result 4759 states and 8404 transitions. [2020-11-12 03:41:54,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-11-12 03:41:54,847 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 03:41:54,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:41:54,852 INFO L225 Difference]: With dead ends: 4759 [2020-11-12 03:41:54,852 INFO L226 Difference]: Without dead ends: 4489 [2020-11-12 03:41:54,853 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1353 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1301, Invalid=3955, Unknown=0, NotChecked=0, Total=5256 [2020-11-12 03:41:54,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2020-11-12 03:41:54,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 2902. [2020-11-12 03:41:54,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2902 states, 2838 states have (on average 1.777307963354475) internal successors, (5044), 2901 states have internal predecessors, (5044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:54,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2902 states to 2902 states and 5044 transitions. [2020-11-12 03:41:54,891 INFO L78 Accepts]: Start accepts. Automaton has 2902 states and 5044 transitions. Word has length 151 [2020-11-12 03:41:54,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:41:54,892 INFO L481 AbstractCegarLoop]: Abstraction has 2902 states and 5044 transitions. [2020-11-12 03:41:54,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:54,892 INFO L276 IsEmpty]: Start isEmpty. Operand 2902 states and 5044 transitions. [2020-11-12 03:41:54,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 03:41:54,894 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:41:54,894 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:41:55,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 314 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable318 [2020-11-12 03:41:55,095 INFO L429 AbstractCegarLoop]: === Iteration 320 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:41:55,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:41:55,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1668870259, now seen corresponding path program 309 times [2020-11-12 03:41:55,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:41:55,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846647190] [2020-11-12 03:41:55,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:41:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:41:56,165 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:56,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846647190] [2020-11-12 03:41:56,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092176327] [2020-11-12 03:41:56,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 315 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 315 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:56,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-11-12 03:41:56,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:41:56,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 42 conjunts are in the unsatisfiable core [2020-11-12 03:41:56,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:41:56,393 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:41:56,418 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:56,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:41:56,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2020-11-12 03:41:56,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571177640] [2020-11-12 03:41:56,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 03:41:56,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:41:56,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 03:41:56,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:41:56,419 INFO L87 Difference]: Start difference. First operand 2902 states and 5044 transitions. Second operand has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:00,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:42:00,101 INFO L93 Difference]: Finished difference Result 4759 states and 8384 transitions. [2020-11-12 03:42:00,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-11-12 03:42:00,103 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 03:42:00,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:42:00,109 INFO L225 Difference]: With dead ends: 4759 [2020-11-12 03:42:00,109 INFO L226 Difference]: Without dead ends: 4489 [2020-11-12 03:42:00,109 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1352 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1267, Invalid=4283, Unknown=0, NotChecked=0, Total=5550 [2020-11-12 03:42:00,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2020-11-12 03:42:00,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 2927. [2020-11-12 03:42:00,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2927 states, 2863 states have (on average 1.7809989521480964) internal successors, (5099), 2926 states have internal predecessors, (5099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:00,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2927 states to 2927 states and 5099 transitions. [2020-11-12 03:42:00,144 INFO L78 Accepts]: Start accepts. Automaton has 2927 states and 5099 transitions. Word has length 151 [2020-11-12 03:42:00,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:42:00,144 INFO L481 AbstractCegarLoop]: Abstraction has 2927 states and 5099 transitions. [2020-11-12 03:42:00,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:00,145 INFO L276 IsEmpty]: Start isEmpty. Operand 2927 states and 5099 transitions. [2020-11-12 03:42:00,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 03:42:00,147 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:42:00,147 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:42:00,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319,315 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:42:00,348 INFO L429 AbstractCegarLoop]: === Iteration 321 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:42:00,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:42:00,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1153883179, now seen corresponding path program 310 times [2020-11-12 03:42:00,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:42:00,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746952471] [2020-11-12 03:42:00,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:42:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:42:01,351 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:01,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746952471] [2020-11-12 03:42:01,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385300648] [2020-11-12 03:42:01,351 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 316 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 316 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:42:01,449 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:42:01,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:42:01,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-12 03:42:01,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:42:01,498 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:42:01,522 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:01,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:42:01,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2020-11-12 03:42:01,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994074599] [2020-11-12 03:42:01,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:42:01,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:42:01,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:42:01,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=728, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:42:01,523 INFO L87 Difference]: Start difference. First operand 2927 states and 5099 transitions. Second operand has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:04,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:42:04,825 INFO L93 Difference]: Finished difference Result 4759 states and 8364 transitions. [2020-11-12 03:42:04,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-11-12 03:42:04,827 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 03:42:04,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:42:04,833 INFO L225 Difference]: With dead ends: 4759 [2020-11-12 03:42:04,833 INFO L226 Difference]: Without dead ends: 4489 [2020-11-12 03:42:04,834 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1471 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1411, Invalid=4139, Unknown=0, NotChecked=0, Total=5550 [2020-11-12 03:42:04,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2020-11-12 03:42:04,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 2952. [2020-11-12 03:42:04,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2952 states, 2888 states have (on average 1.7846260387811634) internal successors, (5154), 2951 states have internal predecessors, (5154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:04,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2952 states to 2952 states and 5154 transitions. [2020-11-12 03:42:04,873 INFO L78 Accepts]: Start accepts. Automaton has 2952 states and 5154 transitions. Word has length 151 [2020-11-12 03:42:04,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:42:04,873 INFO L481 AbstractCegarLoop]: Abstraction has 2952 states and 5154 transitions. [2020-11-12 03:42:04,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:04,873 INFO L276 IsEmpty]: Start isEmpty. Operand 2952 states and 5154 transitions. [2020-11-12 03:42:04,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 03:42:04,876 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:42:04,876 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:42:05,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320,316 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:42:05,076 INFO L429 AbstractCegarLoop]: === Iteration 322 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:42:05,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:42:05,077 INFO L82 PathProgramCache]: Analyzing trace with hash 675912555, now seen corresponding path program 311 times [2020-11-12 03:42:05,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:42:05,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641227431] [2020-11-12 03:42:05,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:42:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:42:06,102 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:06,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641227431] [2020-11-12 03:42:06,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801428062] [2020-11-12 03:42:06,102 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 317 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 317 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:42:06,207 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2020-11-12 03:42:06,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:42:06,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:42:06,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:42:06,277 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:42:06,316 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:42:06,339 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:06,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:42:06,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2020-11-12 03:42:06,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100760346] [2020-11-12 03:42:06,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 03:42:06,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:42:06,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 03:42:06,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=789, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:42:06,340 INFO L87 Difference]: Start difference. First operand 2952 states and 5154 transitions. Second operand has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:10,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:42:10,293 INFO L93 Difference]: Finished difference Result 4759 states and 8344 transitions. [2020-11-12 03:42:10,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-11-12 03:42:10,295 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 03:42:10,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:42:10,301 INFO L225 Difference]: With dead ends: 4759 [2020-11-12 03:42:10,301 INFO L226 Difference]: Without dead ends: 4489 [2020-11-12 03:42:10,302 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1510 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1445, Invalid=4407, Unknown=0, NotChecked=0, Total=5852 [2020-11-12 03:42:10,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2020-11-12 03:42:10,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 2977. [2020-11-12 03:42:10,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2977 states, 2913 states have (on average 1.7881908685204257) internal successors, (5209), 2976 states have internal predecessors, (5209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:10,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2977 states to 2977 states and 5209 transitions. [2020-11-12 03:42:10,340 INFO L78 Accepts]: Start accepts. Automaton has 2977 states and 5209 transitions. Word has length 151 [2020-11-12 03:42:10,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:42:10,341 INFO L481 AbstractCegarLoop]: Abstraction has 2977 states and 5209 transitions. [2020-11-12 03:42:10,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:10,341 INFO L276 IsEmpty]: Start isEmpty. Operand 2977 states and 5209 transitions. [2020-11-12 03:42:10,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 03:42:10,343 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:42:10,343 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:42:10,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 317 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable321 [2020-11-12 03:42:10,544 INFO L429 AbstractCegarLoop]: === Iteration 323 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:42:10,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:42:10,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1822750089, now seen corresponding path program 312 times [2020-11-12 03:42:10,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:42:10,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090097776] [2020-11-12 03:42:10,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:42:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:42:11,591 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:11,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090097776] [2020-11-12 03:42:11,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834372068] [2020-11-12 03:42:11,592 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 318 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 318 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:42:11,703 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-12 03:42:11,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:42:11,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:42:11,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:42:11,758 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:42:11,782 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:11,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:42:11,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2020-11-12 03:42:11,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095885109] [2020-11-12 03:42:11,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:42:11,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:42:11,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:42:11,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=719, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:42:11,783 INFO L87 Difference]: Start difference. First operand 2977 states and 5209 transitions. Second operand has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:15,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:42:15,232 INFO L93 Difference]: Finished difference Result 4759 states and 8324 transitions. [2020-11-12 03:42:15,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-11-12 03:42:15,234 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 03:42:15,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:42:15,239 INFO L225 Difference]: With dead ends: 4759 [2020-11-12 03:42:15,239 INFO L226 Difference]: Without dead ends: 4489 [2020-11-12 03:42:15,240 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1593 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1537, Invalid=4315, Unknown=0, NotChecked=0, Total=5852 [2020-11-12 03:42:15,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2020-11-12 03:42:15,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 3002. [2020-11-12 03:42:15,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3002 states, 2938 states have (on average 1.7916950306330837) internal successors, (5264), 3001 states have internal predecessors, (5264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:15,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3002 states to 3002 states and 5264 transitions. [2020-11-12 03:42:15,278 INFO L78 Accepts]: Start accepts. Automaton has 3002 states and 5264 transitions. Word has length 151 [2020-11-12 03:42:15,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:42:15,278 INFO L481 AbstractCegarLoop]: Abstraction has 3002 states and 5264 transitions. [2020-11-12 03:42:15,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:15,278 INFO L276 IsEmpty]: Start isEmpty. Operand 3002 states and 5264 transitions. [2020-11-12 03:42:15,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 03:42:15,281 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:42:15,281 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:42:15,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 318 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable322 [2020-11-12 03:42:15,481 INFO L429 AbstractCegarLoop]: === Iteration 324 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:42:15,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:42:15,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1183726391, now seen corresponding path program 313 times [2020-11-12 03:42:15,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:42:15,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893934652] [2020-11-12 03:42:15,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:42:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:42:16,549 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:16,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893934652] [2020-11-12 03:42:16,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731976810] [2020-11-12 03:42:16,550 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 319 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 319 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:42:16,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:42:16,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:42:16,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:42:16,720 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:42:16,764 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:42:16,796 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:16,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:42:16,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2020-11-12 03:42:16,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70406761] [2020-11-12 03:42:16,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 03:42:16,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:42:16,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 03:42:16,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=779, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:42:16,798 INFO L87 Difference]: Start difference. First operand 3002 states and 5264 transitions. Second operand has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:21,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:42:21,004 INFO L93 Difference]: Finished difference Result 4759 states and 8304 transitions. [2020-11-12 03:42:21,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-11-12 03:42:21,007 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 03:42:21,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:42:21,011 INFO L225 Difference]: With dead ends: 4759 [2020-11-12 03:42:21,012 INFO L226 Difference]: Without dead ends: 4489 [2020-11-12 03:42:21,012 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1635 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1573, Invalid=4589, Unknown=0, NotChecked=0, Total=6162 [2020-11-12 03:42:21,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2020-11-12 03:42:21,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 3027. [2020-11-12 03:42:21,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3027 states, 2963 states have (on average 1.7951400607492407) internal successors, (5319), 3026 states have internal predecessors, (5319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:21,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3027 states to 3027 states and 5319 transitions. [2020-11-12 03:42:21,051 INFO L78 Accepts]: Start accepts. Automaton has 3027 states and 5319 transitions. Word has length 151 [2020-11-12 03:42:21,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:42:21,051 INFO L481 AbstractCegarLoop]: Abstraction has 3027 states and 5319 transitions. [2020-11-12 03:42:21,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:21,051 INFO L276 IsEmpty]: Start isEmpty. Operand 3027 states and 5319 transitions. [2020-11-12 03:42:21,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 03:42:21,054 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:42:21,054 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:42:21,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 319 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable323 [2020-11-12 03:42:21,255 INFO L429 AbstractCegarLoop]: === Iteration 325 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:42:21,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:42:21,255 INFO L82 PathProgramCache]: Analyzing trace with hash 2129890407, now seen corresponding path program 314 times [2020-11-12 03:42:21,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:42:21,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029401650] [2020-11-12 03:42:21,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:42:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:42:22,257 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:22,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029401650] [2020-11-12 03:42:22,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646813040] [2020-11-12 03:42:22,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 320 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 320 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:42:22,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:42:22,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:42:22,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:42:22,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:42:22,416 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:42:22,438 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:22,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:42:22,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2020-11-12 03:42:22,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045272867] [2020-11-12 03:42:22,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:42:22,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:42:22,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:42:22,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:42:22,439 INFO L87 Difference]: Start difference. First operand 3027 states and 5319 transitions. Second operand has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:26,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:42:26,135 INFO L93 Difference]: Finished difference Result 4759 states and 8284 transitions. [2020-11-12 03:42:26,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-11-12 03:42:26,138 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 03:42:26,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:42:26,143 INFO L225 Difference]: With dead ends: 4759 [2020-11-12 03:42:26,143 INFO L226 Difference]: Without dead ends: 4489 [2020-11-12 03:42:26,144 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1719 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1679, Invalid=4483, Unknown=0, NotChecked=0, Total=6162 [2020-11-12 03:42:26,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2020-11-12 03:42:26,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 3052. [2020-11-12 03:42:26,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3052 states, 2988 states have (on average 1.7985274431057563) internal successors, (5374), 3051 states have internal predecessors, (5374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:26,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3052 states to 3052 states and 5374 transitions. [2020-11-12 03:42:26,183 INFO L78 Accepts]: Start accepts. Automaton has 3052 states and 5374 transitions. Word has length 151 [2020-11-12 03:42:26,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:42:26,183 INFO L481 AbstractCegarLoop]: Abstraction has 3052 states and 5374 transitions. [2020-11-12 03:42:26,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:26,183 INFO L276 IsEmpty]: Start isEmpty. Operand 3052 states and 5374 transitions. [2020-11-12 03:42:26,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 03:42:26,186 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:42:26,186 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:42:26,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 320 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable324 [2020-11-12 03:42:26,387 INFO L429 AbstractCegarLoop]: === Iteration 326 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:42:26,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:42:26,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1465805735, now seen corresponding path program 315 times [2020-11-12 03:42:26,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:42:26,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198624843] [2020-11-12 03:42:26,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:42:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:42:27,430 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:27,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198624843] [2020-11-12 03:42:27,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932713113] [2020-11-12 03:42:27,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 321 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 321 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:42:27,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-11-12 03:42:27,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:42:27,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-12 03:42:27,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:42:27,697 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:42:27,718 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:27,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:42:27,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2020-11-12 03:42:27,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328765796] [2020-11-12 03:42:27,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 03:42:27,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:42:27,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 03:42:27,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:42:27,719 INFO L87 Difference]: Start difference. First operand 3052 states and 5374 transitions. Second operand has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:32,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:42:32,117 INFO L93 Difference]: Finished difference Result 4759 states and 8264 transitions. [2020-11-12 03:42:32,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-11-12 03:42:32,120 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 03:42:32,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:42:32,125 INFO L225 Difference]: With dead ends: 4759 [2020-11-12 03:42:32,125 INFO L226 Difference]: Without dead ends: 4489 [2020-11-12 03:42:32,126 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1694 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1579, Invalid=4901, Unknown=0, NotChecked=0, Total=6480 [2020-11-12 03:42:32,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2020-11-12 03:42:32,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 3077. [2020-11-12 03:42:32,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3077 states, 3013 states have (on average 1.8018586126783935) internal successors, (5429), 3076 states have internal predecessors, (5429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:32,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3077 states to 3077 states and 5429 transitions. [2020-11-12 03:42:32,166 INFO L78 Accepts]: Start accepts. Automaton has 3077 states and 5429 transitions. Word has length 151 [2020-11-12 03:42:32,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:42:32,167 INFO L481 AbstractCegarLoop]: Abstraction has 3077 states and 5429 transitions. [2020-11-12 03:42:32,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:32,167 INFO L276 IsEmpty]: Start isEmpty. Operand 3077 states and 5429 transitions. [2020-11-12 03:42:32,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 03:42:32,169 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:42:32,169 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:42:32,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325,321 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:42:32,370 INFO L429 AbstractCegarLoop]: === Iteration 327 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:42:32,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:42:32,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1764327621, now seen corresponding path program 316 times [2020-11-12 03:42:32,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:42:32,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045531177] [2020-11-12 03:42:32,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:42:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:42:33,407 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:33,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045531177] [2020-11-12 03:42:33,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305222320] [2020-11-12 03:42:33,408 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 322 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 322 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:42:33,507 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:42:33,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:42:33,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-12 03:42:33,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:42:33,567 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:42:33,589 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:33,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:42:33,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2020-11-12 03:42:33,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750867030] [2020-11-12 03:42:33,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:42:33,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:42:33,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:42:33,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:42:33,590 INFO L87 Difference]: Start difference. First operand 3077 states and 5429 transitions. Second operand has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:37,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:42:37,415 INFO L93 Difference]: Finished difference Result 4759 states and 8244 transitions. [2020-11-12 03:42:37,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-11-12 03:42:37,417 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 03:42:37,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:42:37,422 INFO L225 Difference]: With dead ends: 4759 [2020-11-12 03:42:37,422 INFO L226 Difference]: Without dead ends: 4489 [2020-11-12 03:42:37,422 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1849 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1837, Invalid=4643, Unknown=0, NotChecked=0, Total=6480 [2020-11-12 03:42:37,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2020-11-12 03:42:37,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 3102. [2020-11-12 03:42:37,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3102 states, 3038 states have (on average 1.8051349572086899) internal successors, (5484), 3101 states have internal predecessors, (5484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:37,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3102 states to 3102 states and 5484 transitions. [2020-11-12 03:42:37,459 INFO L78 Accepts]: Start accepts. Automaton has 3102 states and 5484 transitions. Word has length 151 [2020-11-12 03:42:37,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:42:37,459 INFO L481 AbstractCegarLoop]: Abstraction has 3102 states and 5484 transitions. [2020-11-12 03:42:37,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:37,459 INFO L276 IsEmpty]: Start isEmpty. Operand 3102 states and 5484 transitions. [2020-11-12 03:42:37,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 03:42:37,462 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:42:37,462 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:42:37,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 322 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable326 [2020-11-12 03:42:37,662 INFO L429 AbstractCegarLoop]: === Iteration 328 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:42:37,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:42:37,663 INFO L82 PathProgramCache]: Analyzing trace with hash 143028229, now seen corresponding path program 317 times [2020-11-12 03:42:37,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:42:37,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941491196] [2020-11-12 03:42:37,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:42:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:42:38,725 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:38,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941491196] [2020-11-12 03:42:38,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537081917] [2020-11-12 03:42:38,725 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 323 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 323 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:42:38,831 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2020-11-12 03:42:38,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:42:38,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:42:38,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:42:38,905 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:42:38,951 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:42:38,973 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:38,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:42:38,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2020-11-12 03:42:38,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510592870] [2020-11-12 03:42:38,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 03:42:38,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:42:38,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 03:42:38,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:42:38,974 INFO L87 Difference]: Start difference. First operand 3102 states and 5484 transitions. Second operand has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:43,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:42:43,986 INFO L93 Difference]: Finished difference Result 5188 states and 9030 transitions. [2020-11-12 03:42:43,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-11-12 03:42:43,988 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 03:42:43,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:42:43,993 INFO L225 Difference]: With dead ends: 5188 [2020-11-12 03:42:43,993 INFO L226 Difference]: Without dead ends: 4679 [2020-11-12 03:42:43,993 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2000 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1898, Invalid=5242, Unknown=0, NotChecked=0, Total=7140 [2020-11-12 03:42:43,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4679 states. [2020-11-12 03:42:44,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4679 to 3127. [2020-11-12 03:42:44,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3127 states, 3063 states have (on average 1.8103166829905322) internal successors, (5545), 3126 states have internal predecessors, (5545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:44,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3127 states to 3127 states and 5545 transitions. [2020-11-12 03:42:44,034 INFO L78 Accepts]: Start accepts. Automaton has 3127 states and 5545 transitions. Word has length 151 [2020-11-12 03:42:44,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:42:44,034 INFO L481 AbstractCegarLoop]: Abstraction has 3127 states and 5545 transitions. [2020-11-12 03:42:44,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:44,034 INFO L276 IsEmpty]: Start isEmpty. Operand 3127 states and 5545 transitions. [2020-11-12 03:42:44,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 03:42:44,037 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:42:44,037 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:42:44,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327,323 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:42:44,237 INFO L429 AbstractCegarLoop]: === Iteration 329 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:42:44,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:42:44,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1277118393, now seen corresponding path program 318 times [2020-11-12 03:42:44,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:42:44,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336476397] [2020-11-12 03:42:44,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:42:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:42:45,270 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:45,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336476397] [2020-11-12 03:42:45,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285219272] [2020-11-12 03:42:45,270 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 324 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 324 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:42:45,380 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-12 03:42:45,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:42:45,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-12 03:42:45,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:42:45,448 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:42:45,468 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:45,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:42:45,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2020-11-12 03:42:45,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401001144] [2020-11-12 03:42:45,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:42:45,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:42:45,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:42:45,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:42:45,469 INFO L87 Difference]: Start difference. First operand 3127 states and 5545 transitions. Second operand has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:49,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:42:49,575 INFO L93 Difference]: Finished difference Result 5866 states and 9714 transitions. [2020-11-12 03:42:49,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-11-12 03:42:49,578 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 03:42:49,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:42:49,582 INFO L225 Difference]: With dead ends: 5866 [2020-11-12 03:42:49,582 INFO L226 Difference]: Without dead ends: 5581 [2020-11-12 03:42:49,583 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1982 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2012, Invalid=4794, Unknown=0, NotChecked=0, Total=6806 [2020-11-12 03:42:49,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5581 states. [2020-11-12 03:42:49,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5581 to 3212. [2020-11-12 03:42:49,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3212 states, 3148 states have (on average 1.8243329097839898) internal successors, (5743), 3211 states have internal predecessors, (5743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:49,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3212 states to 3212 states and 5743 transitions. [2020-11-12 03:42:49,624 INFO L78 Accepts]: Start accepts. Automaton has 3212 states and 5743 transitions. Word has length 151 [2020-11-12 03:42:49,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:42:49,625 INFO L481 AbstractCegarLoop]: Abstraction has 3212 states and 5743 transitions. [2020-11-12 03:42:49,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:49,625 INFO L276 IsEmpty]: Start isEmpty. Operand 3212 states and 5743 transitions. [2020-11-12 03:42:49,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 03:42:49,627 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:42:49,627 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:42:49,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 324 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable328 [2020-11-12 03:42:49,828 INFO L429 AbstractCegarLoop]: === Iteration 330 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:42:49,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:42:49,829 INFO L82 PathProgramCache]: Analyzing trace with hash 2117095585, now seen corresponding path program 319 times [2020-11-12 03:42:49,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:42:49,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816743155] [2020-11-12 03:42:49,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:42:49,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:42:50,891 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:50,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816743155] [2020-11-12 03:42:50,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457375172] [2020-11-12 03:42:50,891 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 325 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 325 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:42:50,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:42:50,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:42:50,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:42:51,067 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:42:51,115 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:42:51,134 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:51,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:42:51,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2020-11-12 03:42:51,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347660223] [2020-11-12 03:42:51,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 03:42:51,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:42:51,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 03:42:51,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=725, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:42:51,135 INFO L87 Difference]: Start difference. First operand 3212 states and 5743 transitions. Second operand has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:56,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:42:56,012 INFO L93 Difference]: Finished difference Result 4865 states and 8309 transitions. [2020-11-12 03:42:56,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-11-12 03:42:56,014 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 03:42:56,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:42:56,019 INFO L225 Difference]: With dead ends: 4865 [2020-11-12 03:42:56,019 INFO L226 Difference]: Without dead ends: 4469 [2020-11-12 03:42:56,020 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2034 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2056, Invalid=5084, Unknown=0, NotChecked=0, Total=7140 [2020-11-12 03:42:56,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4469 states. [2020-11-12 03:42:56,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4469 to 3107. [2020-11-12 03:42:56,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3107 states, 3043 states have (on average 1.8189286887939533) internal successors, (5535), 3106 states have internal predecessors, (5535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:56,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 5535 transitions. [2020-11-12 03:42:56,059 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 5535 transitions. Word has length 151 [2020-11-12 03:42:56,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:42:56,059 INFO L481 AbstractCegarLoop]: Abstraction has 3107 states and 5535 transitions. [2020-11-12 03:42:56,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:56,059 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 5535 transitions. [2020-11-12 03:42:56,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-11-12 03:42:56,062 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:42:56,062 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:42:56,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329,325 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:42:56,262 INFO L429 AbstractCegarLoop]: === Iteration 331 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:42:56,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:42:56,263 INFO L82 PathProgramCache]: Analyzing trace with hash 513328309, now seen corresponding path program 320 times [2020-11-12 03:42:56,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:42:56,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310598345] [2020-11-12 03:42:56,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:42:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:42:57,623 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:57,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310598345] [2020-11-12 03:42:57,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983306313] [2020-11-12 03:42:57,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 326 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 326 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:42:57,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:42:57,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:42:57,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-12 03:42:57,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:42:57,872 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:42:57,949 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:42:57,987 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:57,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:42:57,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 35 [2020-11-12 03:42:57,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248730912] [2020-11-12 03:42:57,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-11-12 03:42:57,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:42:57,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-11-12 03:42:57,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=922, Unknown=0, NotChecked=0, Total=1190 [2020-11-12 03:42:57,988 INFO L87 Difference]: Start difference. First operand 3107 states and 5535 transitions. Second operand has 35 states, 35 states have (on average 5.114285714285714) internal successors, (179), 35 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:43:00,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:43:00,699 INFO L93 Difference]: Finished difference Result 4515 states and 8079 transitions. [2020-11-12 03:43:00,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-12 03:43:00,702 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.114285714285714) internal successors, (179), 35 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2020-11-12 03:43:00,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:43:00,707 INFO L225 Difference]: With dead ends: 4515 [2020-11-12 03:43:00,707 INFO L226 Difference]: Without dead ends: 4181 [2020-11-12 03:43:00,707 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1212, Invalid=3210, Unknown=0, NotChecked=0, Total=4422 [2020-11-12 03:43:00,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4181 states. [2020-11-12 03:43:00,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4181 to 3182. [2020-11-12 03:43:00,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3182 states, 3118 states have (on average 1.8232841565105837) internal successors, (5685), 3181 states have internal predecessors, (5685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:43:00,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3182 states to 3182 states and 5685 transitions. [2020-11-12 03:43:00,746 INFO L78 Accepts]: Start accepts. Automaton has 3182 states and 5685 transitions. Word has length 156 [2020-11-12 03:43:00,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:43:00,746 INFO L481 AbstractCegarLoop]: Abstraction has 3182 states and 5685 transitions. [2020-11-12 03:43:00,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.114285714285714) internal successors, (179), 35 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:43:00,746 INFO L276 IsEmpty]: Start isEmpty. Operand 3182 states and 5685 transitions. [2020-11-12 03:43:00,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-11-12 03:43:00,749 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:43:00,749 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] Received shutdown request... [2020-11-12 03:43:00,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 326 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable330 [2020-11-12 03:43:00,950 INFO L429 AbstractCegarLoop]: === Iteration 332 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:43:00,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:43:00,950 INFO L82 PathProgramCache]: Analyzing trace with hash -157118761, now seen corresponding path program 321 times [2020-11-12 03:43:00,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:43:00,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604754338] [2020-11-12 03:43:00,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:43:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2020-11-12 03:43:00,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1425289709] [2020-11-12 03:43:00,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 327 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 327 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:43:01,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2020-11-12 03:43:01,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:43:01,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-12 03:43:01,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:43:01,089 WARN L210 SmtUtils]: Removed 1 from assertion stack [2020-11-12 03:43:01,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 327 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable331 [2020-11-12 03:43:01,290 WARN L546 AbstractCegarLoop]: Verification canceled [2020-11-12 03:43:01,296 WARN L250 ceAbstractionStarter]: Timeout [2020-11-12 03:43:01,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 03:43:01 BasicIcfg [2020-11-12 03:43:01,296 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 03:43:01,298 INFO L168 Benchmark]: Toolchain (without parser) took 821742.54 ms. Allocated memory was 302.0 MB in the beginning and 629.1 MB in the end (delta: 327.2 MB). Free memory was 276.8 MB in the beginning and 269.2 MB in the end (delta: 7.6 MB). Peak memory consumption was 336.7 MB. Max. memory is 16.0 GB. [2020-11-12 03:43:01,298 INFO L168 Benchmark]: CDTParser took 0.77 ms. Allocated memory is still 302.0 MB. Free memory is still 272.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 03:43:01,299 INFO L168 Benchmark]: CACSL2BoogieTranslator took 843.04 ms. Allocated memory is still 302.0 MB. Free memory was 275.9 MB in the beginning and 247.3 MB in the end (delta: 28.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2020-11-12 03:43:01,299 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.33 ms. Allocated memory is still 302.0 MB. Free memory was 247.1 MB in the beginning and 245.3 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 03:43:01,299 INFO L168 Benchmark]: Boogie Preprocessor took 66.23 ms. Allocated memory is still 302.0 MB. Free memory was 245.3 MB in the beginning and 243.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 03:43:01,300 INFO L168 Benchmark]: RCFGBuilder took 550.30 ms. Allocated memory is still 302.0 MB. Free memory was 243.9 MB in the beginning and 267.4 MB in the end (delta: -23.5 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.0 GB. [2020-11-12 03:43:01,300 INFO L168 Benchmark]: TraceAbstraction took 820193.41 ms. Allocated memory was 302.0 MB in the beginning and 629.1 MB in the end (delta: 327.2 MB). Free memory was 267.4 MB in the beginning and 269.2 MB in the end (delta: -1.8 MB). Peak memory consumption was 325.4 MB. Max. memory is 16.0 GB. [2020-11-12 03:43:01,302 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77 ms. Allocated memory is still 302.0 MB. Free memory is still 272.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 843.04 ms. Allocated memory is still 302.0 MB. Free memory was 275.9 MB in the beginning and 247.3 MB in the end (delta: 28.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 75.33 ms. Allocated memory is still 302.0 MB. Free memory was 247.1 MB in the beginning and 245.3 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 66.23 ms. Allocated memory is still 302.0 MB. Free memory was 245.3 MB in the beginning and 243.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 550.30 ms. Allocated memory is still 302.0 MB. Free memory was 243.9 MB in the beginning and 267.4 MB in the end (delta: -23.5 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 820193.41 ms. Allocated memory was 302.0 MB in the beginning and 629.1 MB in the end (delta: 327.2 MB). Free memory was 267.4 MB in the beginning and 269.2 MB in the end (delta: -1.8 MB). Peak memory consumption was 325.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 685]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 685). Cancelled while BasicCegarLoop was analyzing trace of length 157 with TraceHistMax 13,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 820.0s, OverallIterations: 332, TraceHistogramMax: 13, AutomataDifference: 515.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, HoareTripleCheckerStatistics: 27565 SDtfs, 268984 SDslu, 293666 SDs, 0 SdLazy, 57344 SolverSat, 47356 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 70.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52715 GetRequests, 35854 SyntacticMatches, 300 SemanticMatches, 16561 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225825 ImplicationChecksByTransitivity, 546.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3212occurred in iteration=329, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 10.0s AutomataMinimizationTime, 331 MinimizatonAttempts, 361347 StatesRemovedByMinimization, 331 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5.5s SsaConstructionTime, 14.9s SatisfiabilityAnalysisTime, 188.2s InterpolantComputationTime, 72514 NumberOfCodeBlocks, 72514 NumberOfCodeBlocksAsserted, 2105 NumberOfCheckSat, 71858 ConstructedInterpolants, 0 QuantifiedInterpolants, 36961454 SizeOfPredicates, 6578 NumberOfNonLiveVariables, 72928 ConjunctsInSsa, 7921 ConjunctsInUnsatCore, 656 InterpolantComputations, 6 PerfectInterpolantSequences, 0/208324 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown