/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.epf -i ../../../trunk/examples/svcomp/pthread/triangular-longer-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 12:00:17,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 12:00:17,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 12:00:17,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 12:00:17,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 12:00:17,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 12:00:17,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 12:00:17,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 12:00:17,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 12:00:17,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 12:00:17,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 12:00:17,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 12:00:17,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 12:00:17,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 12:00:17,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 12:00:17,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 12:00:17,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 12:00:17,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 12:00:17,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 12:00:17,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 12:00:17,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 12:00:17,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 12:00:17,974 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 12:00:17,975 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 12:00:17,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-20 12:00:17,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-20 12:00:17,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-20 12:00:17,980 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-20 12:00:17,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-20 12:00:17,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-20 12:00:17,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 12:00:17,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 12:00:17,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 12:00:17,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 12:00:17,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 12:00:17,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 12:00:17,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 12:00:17,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 12:00:17,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 12:00:17,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 12:00:17,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 12:00:17,992 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.epf [2021-01-20 12:00:18,026 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 12:00:18,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 12:00:18,030 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 12:00:18,031 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 12:00:18,032 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 12:00:18,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 12:00:18,033 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 12:00:18,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 12:00:18,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 12:00:18,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 12:00:18,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 12:00:18,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 12:00:18,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 12:00:18,035 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 12:00:18,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 12:00:18,036 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 12:00:18,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 12:00:18,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 12:00:18,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 12:00:18,038 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 12:00:18,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 12:00:18,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 12:00:18,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 12:00:18,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 12:00:18,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 12:00:18,039 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 12:00:18,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 12:00:18,040 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 12:00:18,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 12:00:18,040 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 12:00:18,041 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 12:00:18,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 12:00:18,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 12:00:18,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 12:00:18,500 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 12:00:18,501 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 12:00:18,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-2.i [2021-01-20 12:00:18,581 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0656edad/e1c63f71894449eca748ef79f20db6ef/FLAG6b5018be5 [2021-01-20 12:00:19,187 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 12:00:19,188 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-2.i [2021-01-20 12:00:19,203 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0656edad/e1c63f71894449eca748ef79f20db6ef/FLAG6b5018be5 [2021-01-20 12:00:19,495 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0656edad/e1c63f71894449eca748ef79f20db6ef [2021-01-20 12:00:19,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 12:00:19,505 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 12:00:19,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 12:00:19,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 12:00:19,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 12:00:19,513 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 12:00:19" (1/1) ... [2021-01-20 12:00:19,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d926e7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 12:00:19, skipping insertion in model container [2021-01-20 12:00:19,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 12:00:19" (1/1) ... [2021-01-20 12:00:19,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 12:00:19,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 12:00:19,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 12:00:19,981 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 12:00:20,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 12:00:20,166 INFO L208 MainTranslator]: Completed translation [2021-01-20 12:00:20,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 12:00:20 WrapperNode [2021-01-20 12:00:20,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 12:00:20,167 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 12:00:20,168 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 12:00:20,168 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 12:00:20,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 12:00:20" (1/1) ... [2021-01-20 12:00:20,191 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 12:00:20" (1/1) ... [2021-01-20 12:00:20,215 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 12:00:20,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 12:00:20,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 12:00:20,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 12:00:20,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 12:00:20" (1/1) ... [2021-01-20 12:00:20,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 12:00:20" (1/1) ... [2021-01-20 12:00:20,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 12:00:20" (1/1) ... [2021-01-20 12:00:20,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 12:00:20" (1/1) ... [2021-01-20 12:00:20,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 12:00:20" (1/1) ... [2021-01-20 12:00:20,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 12:00:20" (1/1) ... [2021-01-20 12:00:20,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 12:00:20" (1/1) ... [2021-01-20 12:00:20,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 12:00:20,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 12:00:20,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 12:00:20,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 12:00:20,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 12:00:20" (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 [2021-01-20 12:00:20,336 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-01-20 12:00:20,336 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-01-20 12:00:20,337 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-01-20 12:00:20,337 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-01-20 12:00:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 12:00:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-20 12:00:20,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 12:00:20,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 12:00:20,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 12:00:20,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-20 12:00:20,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 12:00:20,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 12:00:20,344 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-20 12:00:20,817 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 12:00:20,818 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2021-01-20 12:00:20,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 12:00:20 BoogieIcfgContainer [2021-01-20 12:00:20,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 12:00:20,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 12:00:20,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 12:00:20,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 12:00:20,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 12:00:19" (1/3) ... [2021-01-20 12:00:20,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14ac75fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 12:00:20, skipping insertion in model container [2021-01-20 12:00:20,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 12:00:20" (2/3) ... [2021-01-20 12:00:20,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14ac75fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 12:00:20, skipping insertion in model container [2021-01-20 12:00:20,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 12:00:20" (3/3) ... [2021-01-20 12:00:20,830 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2021-01-20 12:00:20,845 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 12:00:20,845 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 12:00:20,849 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 12:00:20,850 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 12:00:20,879 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,880 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,880 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,880 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,880 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,881 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,881 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,881 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,881 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,881 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,882 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,882 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,882 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,882 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,883 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,883 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,883 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,883 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,884 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,884 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,884 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,884 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,884 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,885 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,885 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,885 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,885 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,885 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,886 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,886 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,886 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,886 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,887 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,887 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,887 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,887 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,887 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,888 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,888 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,888 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,888 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,889 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,889 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,890 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,890 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,890 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,890 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,890 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,891 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,891 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,891 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,891 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,891 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,892 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,892 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,892 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,894 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,894 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,895 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,895 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,895 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,895 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,901 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,901 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,901 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,902 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,902 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,902 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 12:00:20,904 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-20 12:00:20,917 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-01-20 12:00:20,939 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 12:00:20,940 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 12:00:20,940 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 12:00:20,940 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 12:00:20,940 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 12:00:20,940 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 12:00:20,940 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 12:00:20,941 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 12:00:20,952 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 65 places, 64 transitions, 138 flow [2021-01-20 12:00:21,059 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) [2021-01-20 12:00:21,067 INFO L276 IsEmpty]: Start isEmpty. Operand 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) [2021-01-20 12:00:21,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-20 12:00:21,083 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:21,083 INFO L504 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] [2021-01-20 12:00:21,084 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:21,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:21,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1900887756, now seen corresponding path program 1 times [2021-01-20 12:00:21,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:21,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454190529] [2021-01-20 12:00:21,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:21,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:21,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454190529] [2021-01-20 12:00:21,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 12:00:21,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 12:00:21,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953223970] [2021-01-20 12:00:21,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 12:00:21,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:21,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 12:00:21,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-20 12:00:21,638 INFO L87 Difference]: Start difference. First operand 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) 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) [2021-01-20 12:00:21,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:21,912 INFO L93 Difference]: Finished difference Result 3507 states and 10199 transitions. [2021-01-20 12:00:21,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 12:00:21,914 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 [2021-01-20 12:00:21,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:21,942 INFO L225 Difference]: With dead ends: 3507 [2021-01-20 12:00:21,943 INFO L226 Difference]: Without dead ends: 1291 [2021-01-20 12:00:21,944 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-01-20 12:00:21,945 INFO L78 Accepts]: Start accepts. Automaton has 1291 states. Word has length 28 [2021-01-20 12:00:21,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:21,946 INFO L481 AbstractCegarLoop]: Abstraction has 1291 states. [2021-01-20 12:00:21,946 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) [2021-01-20 12:00:21,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states. [2021-01-20 12:00:21,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-20 12:00:21,954 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:21,954 INFO L504 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] [2021-01-20 12:00:21,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 12:00:21,954 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:21,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:21,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1614586761, now seen corresponding path program 1 times [2021-01-20 12:00:21,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:21,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929160781] [2021-01-20 12:00:21,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:22,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:22,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929160781] [2021-01-20 12:00:22,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 12:00:22,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 12:00:22,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316231904] [2021-01-20 12:00:22,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 12:00:22,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:22,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 12:00:22,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 12:00:22,157 INFO L87 Difference]: Start difference. First operand 1291 states. 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) [2021-01-20 12:00:22,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:22,372 INFO L93 Difference]: Finished difference Result 1451 states and 3960 transitions. [2021-01-20 12:00:22,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 12:00:22,373 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 [2021-01-20 12:00:22,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:22,383 INFO L225 Difference]: With dead ends: 1451 [2021-01-20 12:00:22,383 INFO L226 Difference]: Without dead ends: 1235 [2021-01-20 12:00:22,384 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-20 12:00:22,385 INFO L78 Accepts]: Start accepts. Automaton has 1235 states. Word has length 32 [2021-01-20 12:00:22,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:22,385 INFO L481 AbstractCegarLoop]: Abstraction has 1235 states. [2021-01-20 12:00:22,385 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) [2021-01-20 12:00:22,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states. [2021-01-20 12:00:22,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-20 12:00:22,389 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:22,389 INFO L504 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] [2021-01-20 12:00:22,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 12:00:22,389 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:22,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:22,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1199752031, now seen corresponding path program 1 times [2021-01-20 12:00:22,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:22,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879252845] [2021-01-20 12:00:22,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:22,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:22,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879252845] [2021-01-20 12:00:22,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 12:00:22,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 12:00:22,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051633852] [2021-01-20 12:00:22,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 12:00:22,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:22,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 12:00:22,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-20 12:00:22,561 INFO L87 Difference]: Start difference. First operand 1235 states. 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) [2021-01-20 12:00:22,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:22,757 INFO L93 Difference]: Finished difference Result 2139 states and 5820 transitions. [2021-01-20 12:00:22,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 12:00:22,758 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 [2021-01-20 12:00:22,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:22,773 INFO L225 Difference]: With dead ends: 2139 [2021-01-20 12:00:22,774 INFO L226 Difference]: Without dead ends: 1883 [2021-01-20 12:00:22,774 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-20 12:00:22,774 INFO L78 Accepts]: Start accepts. Automaton has 1883 states. Word has length 32 [2021-01-20 12:00:22,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:22,775 INFO L481 AbstractCegarLoop]: Abstraction has 1883 states. [2021-01-20 12:00:22,775 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) [2021-01-20 12:00:22,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states. [2021-01-20 12:00:22,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-20 12:00:22,777 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:22,778 INFO L504 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] [2021-01-20 12:00:22,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 12:00:22,778 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:22,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:22,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1202725261, now seen corresponding path program 2 times [2021-01-20 12:00:22,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:22,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348681609] [2021-01-20 12:00:22,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:23,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:23,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348681609] [2021-01-20 12:00:23,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 12:00:23,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 12:00:23,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390245352] [2021-01-20 12:00:23,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 12:00:23,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:23,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 12:00:23,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 12:00:23,038 INFO L87 Difference]: Start difference. First operand 1883 states. 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) [2021-01-20 12:00:23,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:23,255 INFO L93 Difference]: Finished difference Result 1371 states and 3509 transitions. [2021-01-20 12:00:23,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 12:00:23,256 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 [2021-01-20 12:00:23,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:23,265 INFO L225 Difference]: With dead ends: 1371 [2021-01-20 12:00:23,265 INFO L226 Difference]: Without dead ends: 926 [2021-01-20 12:00:23,266 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-01-20 12:00:23,266 INFO L78 Accepts]: Start accepts. Automaton has 926 states. Word has length 32 [2021-01-20 12:00:23,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:23,267 INFO L481 AbstractCegarLoop]: Abstraction has 926 states. [2021-01-20 12:00:23,267 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) [2021-01-20 12:00:23,267 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states. [2021-01-20 12:00:23,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-20 12:00:23,271 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:23,272 INFO L504 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] [2021-01-20 12:00:23,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-20 12:00:23,272 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:23,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:23,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1299742308, now seen corresponding path program 1 times [2021-01-20 12:00:23,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:23,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247294019] [2021-01-20 12:00:23,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:23,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:23,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247294019] [2021-01-20 12:00:23,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 12:00:23,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 12:00:23,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447925173] [2021-01-20 12:00:23,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 12:00:23,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:23,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 12:00:23,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-20 12:00:23,484 INFO L87 Difference]: Start difference. First operand 926 states. 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) [2021-01-20 12:00:23,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:23,746 INFO L93 Difference]: Finished difference Result 2398 states and 6462 transitions. [2021-01-20 12:00:23,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-20 12:00:23,747 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 [2021-01-20 12:00:23,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:23,764 INFO L225 Difference]: With dead ends: 2398 [2021-01-20 12:00:23,765 INFO L226 Difference]: Without dead ends: 2119 [2021-01-20 12:00:23,765 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-01-20 12:00:23,765 INFO L78 Accepts]: Start accepts. Automaton has 2119 states. Word has length 36 [2021-01-20 12:00:23,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:23,767 INFO L481 AbstractCegarLoop]: Abstraction has 2119 states. [2021-01-20 12:00:23,767 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) [2021-01-20 12:00:23,767 INFO L276 IsEmpty]: Start isEmpty. Operand 2119 states. [2021-01-20 12:00:23,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-20 12:00:23,769 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:23,770 INFO L504 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] [2021-01-20 12:00:23,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-20 12:00:23,770 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:23,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:23,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1296769078, now seen corresponding path program 2 times [2021-01-20 12:00:23,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:23,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306221712] [2021-01-20 12:00:23,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:23,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:23,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306221712] [2021-01-20 12:00:23,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 12:00:23,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 12:00:23,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829021705] [2021-01-20 12:00:23,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 12:00:23,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:23,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 12:00:23,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 12:00:23,991 INFO L87 Difference]: Start difference. First operand 2119 states. 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) [2021-01-20 12:00:24,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:24,256 INFO L93 Difference]: Finished difference Result 1543 states and 3905 transitions. [2021-01-20 12:00:24,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-20 12:00:24,257 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 [2021-01-20 12:00:24,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:24,265 INFO L225 Difference]: With dead ends: 1543 [2021-01-20 12:00:24,265 INFO L226 Difference]: Without dead ends: 1079 [2021-01-20 12:00:24,266 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-01-20 12:00:24,266 INFO L78 Accepts]: Start accepts. Automaton has 1079 states. Word has length 36 [2021-01-20 12:00:24,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:24,266 INFO L481 AbstractCegarLoop]: Abstraction has 1079 states. [2021-01-20 12:00:24,266 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) [2021-01-20 12:00:24,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states. [2021-01-20 12:00:24,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-20 12:00:24,269 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:24,269 INFO L504 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] [2021-01-20 12:00:24,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-20 12:00:24,269 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:24,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:24,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1841087432, now seen corresponding path program 3 times [2021-01-20 12:00:24,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:24,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686797614] [2021-01-20 12:00:24,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:24,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:24,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686797614] [2021-01-20 12:00:24,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 12:00:24,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 12:00:24,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763048373] [2021-01-20 12:00:24,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 12:00:24,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:24,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 12:00:24,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-20 12:00:24,405 INFO L87 Difference]: Start difference. First operand 1079 states. 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) [2021-01-20 12:00:24,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:24,573 INFO L93 Difference]: Finished difference Result 1459 states and 3729 transitions. [2021-01-20 12:00:24,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 12:00:24,574 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 [2021-01-20 12:00:24,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:24,583 INFO L225 Difference]: With dead ends: 1459 [2021-01-20 12:00:24,583 INFO L226 Difference]: Without dead ends: 1235 [2021-01-20 12:00:24,583 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-01-20 12:00:24,584 INFO L78 Accepts]: Start accepts. Automaton has 1235 states. Word has length 36 [2021-01-20 12:00:24,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:24,584 INFO L481 AbstractCegarLoop]: Abstraction has 1235 states. [2021-01-20 12:00:24,584 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) [2021-01-20 12:00:24,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states. [2021-01-20 12:00:24,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-20 12:00:24,587 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:24,587 INFO L504 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] [2021-01-20 12:00:24,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-20 12:00:24,587 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:24,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:24,588 INFO L82 PathProgramCache]: Analyzing trace with hash -940103400, now seen corresponding path program 1 times [2021-01-20 12:00:24,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:24,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251369551] [2021-01-20 12:00:24,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:24,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:24,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:24,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251369551] [2021-01-20 12:00:24,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964478098] [2021-01-20 12:00:24,732 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 [2021-01-20 12:00:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:24,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-20 12:00:24,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:25,070 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:25,090 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:25,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:25,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:25,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-01-20 12:00:25,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034610554] [2021-01-20 12:00:25,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-20 12:00:25,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:25,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-20 12:00:25,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-01-20 12:00:25,101 INFO L87 Difference]: Start difference. First operand 1235 states. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:25,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:25,260 INFO L93 Difference]: Finished difference Result 1555 states and 3989 transitions. [2021-01-20 12:00:25,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-20 12:00:25,261 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:00:25,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:25,270 INFO L225 Difference]: With dead ends: 1555 [2021-01-20 12:00:25,270 INFO L226 Difference]: Without dead ends: 1325 [2021-01-20 12:00:25,271 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-01-20 12:00:25,271 INFO L78 Accepts]: Start accepts. Automaton has 1325 states. Word has length 41 [2021-01-20 12:00:25,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:25,272 INFO L481 AbstractCegarLoop]: Abstraction has 1325 states. [2021-01-20 12:00:25,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:25,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states. [2021-01-20 12:00:25,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-20 12:00:25,275 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:25,275 INFO L504 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] [2021-01-20 12:00:25,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-01-20 12:00:25,489 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:25,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:25,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1854918631, now seen corresponding path program 1 times [2021-01-20 12:00:25,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:25,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309094043] [2021-01-20 12:00:25,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:25,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:25,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:25,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309094043] [2021-01-20 12:00:25,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595683732] [2021-01-20 12:00:25,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-01-20 12:00:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:25,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-20 12:00:25,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:25,732 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:25,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:25,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:25,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-01-20 12:00:25,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509112495] [2021-01-20 12:00:25,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-20 12:00:25,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:25,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-20 12:00:25,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-01-20 12:00:25,743 INFO L87 Difference]: Start difference. First operand 1325 states. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:25,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:25,890 INFO L93 Difference]: Finished difference Result 1645 states and 4170 transitions. [2021-01-20 12:00:25,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-20 12:00:25,890 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:00:25,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:25,899 INFO L225 Difference]: With dead ends: 1645 [2021-01-20 12:00:25,899 INFO L226 Difference]: Without dead ends: 1360 [2021-01-20 12:00:25,899 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-01-20 12:00:25,900 INFO L78 Accepts]: Start accepts. Automaton has 1360 states. Word has length 41 [2021-01-20 12:00:25,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:25,901 INFO L481 AbstractCegarLoop]: Abstraction has 1360 states. [2021-01-20 12:00:25,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:25,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states. [2021-01-20 12:00:25,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-20 12:00:25,904 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:25,904 INFO L504 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] [2021-01-20 12:00:26,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:00:26,120 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:26,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:26,121 INFO L82 PathProgramCache]: Analyzing trace with hash 467840107, now seen corresponding path program 2 times [2021-01-20 12:00:26,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:26,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733869855] [2021-01-20 12:00:26,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:26,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:26,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733869855] [2021-01-20 12:00:26,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302925239] [2021-01-20 12:00:26,241 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 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 [2021-01-20 12:00:26,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:00:26,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:26,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-20 12:00:26,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:26,336 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:00:26,368 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:26,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:26,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:26,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-01-20 12:00:26,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017321066] [2021-01-20 12:00:26,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-20 12:00:26,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:26,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-20 12:00:26,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-01-20 12:00:26,377 INFO L87 Difference]: Start difference. First operand 1360 states. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:26,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:26,593 INFO L93 Difference]: Finished difference Result 1720 states and 4320 transitions. [2021-01-20 12:00:26,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-20 12:00:26,594 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:00:26,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:26,603 INFO L225 Difference]: With dead ends: 1720 [2021-01-20 12:00:26,603 INFO L226 Difference]: Without dead ends: 1435 [2021-01-20 12:00:26,604 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-01-20 12:00:26,604 INFO L78 Accepts]: Start accepts. Automaton has 1435 states. Word has length 41 [2021-01-20 12:00:26,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:26,604 INFO L481 AbstractCegarLoop]: Abstraction has 1435 states. [2021-01-20 12:00:26,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:26,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states. [2021-01-20 12:00:26,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-20 12:00:26,607 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:26,608 INFO L504 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] [2021-01-20 12:00:26,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-20 12:00:26,822 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:26,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:26,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1873860069, now seen corresponding path program 3 times [2021-01-20 12:00:26,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:26,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117472966] [2021-01-20 12:00:26,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:26,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:26,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117472966] [2021-01-20 12:00:26,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059814862] [2021-01-20 12:00:26,991 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 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 [2021-01-20 12:00:27,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-20 12:00:27,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:27,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-20 12:00:27,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:27,089 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:27,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:27,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:27,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-01-20 12:00:27,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585351295] [2021-01-20 12:00:27,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-20 12:00:27,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:27,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-20 12:00:27,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-01-20 12:00:27,096 INFO L87 Difference]: Start difference. First operand 1435 states. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:27,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:27,322 INFO L93 Difference]: Finished difference Result 2907 states and 7654 transitions. [2021-01-20 12:00:27,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-20 12:00:27,322 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:00:27,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:27,339 INFO L225 Difference]: With dead ends: 2907 [2021-01-20 12:00:27,339 INFO L226 Difference]: Without dead ends: 2637 [2021-01-20 12:00:27,340 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-01-20 12:00:27,340 INFO L78 Accepts]: Start accepts. Automaton has 2637 states. Word has length 41 [2021-01-20 12:00:27,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:27,340 INFO L481 AbstractCegarLoop]: Abstraction has 2637 states. [2021-01-20 12:00:27,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:27,341 INFO L276 IsEmpty]: Start isEmpty. Operand 2637 states. [2021-01-20 12:00:27,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-20 12:00:27,343 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:27,343 INFO L504 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] [2021-01-20 12:00:27,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:00:27,558 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:27,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:27,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1870886839, now seen corresponding path program 4 times [2021-01-20 12:00:27,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:27,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316142918] [2021-01-20 12:00:27,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:27,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:27,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316142918] [2021-01-20 12:00:27,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226977230] [2021-01-20 12:00:27,666 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 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 [2021-01-20 12:00:27,747 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:00:27,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:27,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-20 12:00:27,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:27,817 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:00:27,858 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:27,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:27,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:27,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-01-20 12:00:27,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338462131] [2021-01-20 12:00:27,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-20 12:00:27,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:27,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-20 12:00:27,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-01-20 12:00:27,866 INFO L87 Difference]: Start difference. First operand 2637 states. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 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) [2021-01-20 12:00:28,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:28,277 INFO L93 Difference]: Finished difference Result 2445 states and 6136 transitions. [2021-01-20 12:00:28,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-20 12:00:28,277 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 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 [2021-01-20 12:00:28,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:28,284 INFO L225 Difference]: With dead ends: 2445 [2021-01-20 12:00:28,284 INFO L226 Difference]: Without dead ends: 1790 [2021-01-20 12:00:28,285 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2021-01-20 12:00:28,285 INFO L78 Accepts]: Start accepts. Automaton has 1790 states. Word has length 41 [2021-01-20 12:00:28,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:28,285 INFO L481 AbstractCegarLoop]: Abstraction has 1790 states. [2021-01-20 12:00:28,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 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) [2021-01-20 12:00:28,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1790 states. [2021-01-20 12:00:28,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-20 12:00:28,289 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:28,289 INFO L504 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] [2021-01-20 12:00:28,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-20 12:00:28,503 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:28,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:28,504 INFO L82 PathProgramCache]: Analyzing trace with hash 697126713, now seen corresponding path program 1 times [2021-01-20 12:00:28,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:28,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366813838] [2021-01-20 12:00:28,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:28,617 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:28,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366813838] [2021-01-20 12:00:28,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92652344] [2021-01-20 12:00:28,618 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 [2021-01-20 12:00:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:28,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-20 12:00:28,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:28,705 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:28,711 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:28,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:28,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-01-20 12:00:28,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916836374] [2021-01-20 12:00:28,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-20 12:00:28,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:28,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-20 12:00:28,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-01-20 12:00:28,713 INFO L87 Difference]: Start difference. First operand 1790 states. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:28,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:28,899 INFO L93 Difference]: Finished difference Result 2110 states and 5230 transitions. [2021-01-20 12:00:28,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-20 12:00:28,900 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:00:28,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:28,913 INFO L225 Difference]: With dead ends: 2110 [2021-01-20 12:00:28,913 INFO L226 Difference]: Without dead ends: 1840 [2021-01-20 12:00:28,913 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-01-20 12:00:28,913 INFO L78 Accepts]: Start accepts. Automaton has 1840 states. Word has length 46 [2021-01-20 12:00:28,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:28,914 INFO L481 AbstractCegarLoop]: Abstraction has 1840 states. [2021-01-20 12:00:28,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:28,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states. [2021-01-20 12:00:28,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-20 12:00:28,920 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:28,920 INFO L504 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] [2021-01-20 12:00:29,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:00:29,138 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:29,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:29,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1275081845, now seen corresponding path program 2 times [2021-01-20 12:00:29,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:29,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240826547] [2021-01-20 12:00:29,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:29,289 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:29,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240826547] [2021-01-20 12:00:29,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737000037] [2021-01-20 12:00:29,289 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 [2021-01-20 12:00:29,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:00:29,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:29,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-20 12:00:29,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:29,380 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:00:29,395 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:29,401 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:29,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:29,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-01-20 12:00:29,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622012438] [2021-01-20 12:00:29,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-20 12:00:29,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:29,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-20 12:00:29,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-01-20 12:00:29,403 INFO L87 Difference]: Start difference. First operand 1840 states. 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) [2021-01-20 12:00:29,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:29,690 INFO L93 Difference]: Finished difference Result 2200 states and 5410 transitions. [2021-01-20 12:00:29,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-20 12:00:29,691 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 [2021-01-20 12:00:29,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:29,696 INFO L225 Difference]: With dead ends: 2200 [2021-01-20 12:00:29,696 INFO L226 Difference]: Without dead ends: 1915 [2021-01-20 12:00:29,697 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-01-20 12:00:29,697 INFO L78 Accepts]: Start accepts. Automaton has 1915 states. Word has length 46 [2021-01-20 12:00:29,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:29,697 INFO L481 AbstractCegarLoop]: Abstraction has 1915 states. [2021-01-20 12:00:29,698 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) [2021-01-20 12:00:29,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states. [2021-01-20 12:00:29,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-20 12:00:29,701 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:29,701 INFO L504 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] [2021-01-20 12:00:29,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-20 12:00:29,917 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:29,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:29,918 INFO L82 PathProgramCache]: Analyzing trace with hash 130938117, now seen corresponding path program 3 times [2021-01-20 12:00:29,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:29,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31420418] [2021-01-20 12:00:29,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:30,026 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:30,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31420418] [2021-01-20 12:00:30,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075161575] [2021-01-20 12:00:30,026 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 [2021-01-20 12:00:30,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-20 12:00:30,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:30,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-20 12:00:30,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:30,106 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:30,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:30,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:30,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-01-20 12:00:30,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050265044] [2021-01-20 12:00:30,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-20 12:00:30,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:30,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-20 12:00:30,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-01-20 12:00:30,113 INFO L87 Difference]: Start difference. First operand 1915 states. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:30,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:30,330 INFO L93 Difference]: Finished difference Result 3387 states and 8744 transitions. [2021-01-20 12:00:30,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-20 12:00:30,330 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:00:30,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:30,338 INFO L225 Difference]: With dead ends: 3387 [2021-01-20 12:00:30,338 INFO L226 Difference]: Without dead ends: 3117 [2021-01-20 12:00:30,339 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-01-20 12:00:30,339 INFO L78 Accepts]: Start accepts. Automaton has 3117 states. Word has length 46 [2021-01-20 12:00:30,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:30,339 INFO L481 AbstractCegarLoop]: Abstraction has 3117 states. [2021-01-20 12:00:30,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:30,339 INFO L276 IsEmpty]: Start isEmpty. Operand 3117 states. [2021-01-20 12:00:30,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-20 12:00:30,343 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:30,343 INFO L504 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] [2021-01-20 12:00:30,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-20 12:00:30,557 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:30,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:30,558 INFO L82 PathProgramCache]: Analyzing trace with hash 127964887, now seen corresponding path program 4 times [2021-01-20 12:00:30,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:30,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738695045] [2021-01-20 12:00:30,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:30,698 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:30,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738695045] [2021-01-20 12:00:30,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125881619] [2021-01-20 12:00:30,699 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 [2021-01-20 12:00:30,807 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:00:30,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:30,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-20 12:00:30,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:30,852 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:00:30,867 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:30,874 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:30,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:30,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-01-20 12:00:30,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658782619] [2021-01-20 12:00:30,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-20 12:00:30,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:30,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-20 12:00:30,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-01-20 12:00:30,876 INFO L87 Difference]: Start difference. First operand 3117 states. 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) [2021-01-20 12:00:31,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:31,256 INFO L93 Difference]: Finished difference Result 2669 states and 6586 transitions. [2021-01-20 12:00:31,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-20 12:00:31,257 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 [2021-01-20 12:00:31,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:31,262 INFO L225 Difference]: With dead ends: 2669 [2021-01-20 12:00:31,262 INFO L226 Difference]: Without dead ends: 2070 [2021-01-20 12:00:31,263 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-01-20 12:00:31,263 INFO L78 Accepts]: Start accepts. Automaton has 2070 states. Word has length 46 [2021-01-20 12:00:31,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:31,263 INFO L481 AbstractCegarLoop]: Abstraction has 2070 states. [2021-01-20 12:00:31,264 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) [2021-01-20 12:00:31,264 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states. [2021-01-20 12:00:31,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-20 12:00:31,269 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:31,269 INFO L504 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] [2021-01-20 12:00:31,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-20 12:00:31,483 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:31,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:31,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1328082230, now seen corresponding path program 5 times [2021-01-20 12:00:31,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:31,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679937397] [2021-01-20 12:00:31,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:31,636 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:31,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679937397] [2021-01-20 12:00:31,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533937733] [2021-01-20 12:00:31,637 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 [2021-01-20 12:00:31,715 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-01-20 12:00:31,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:31,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-20 12:00:31,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:31,759 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:31,769 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:31,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:31,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-01-20 12:00:31,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253466117] [2021-01-20 12:00:31,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-20 12:00:31,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:31,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-20 12:00:31,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-01-20 12:00:31,771 INFO L87 Difference]: Start difference. First operand 2070 states. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:31,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:31,934 INFO L93 Difference]: Finished difference Result 2390 states and 5860 transitions. [2021-01-20 12:00:31,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-20 12:00:31,934 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:00:31,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:31,939 INFO L225 Difference]: With dead ends: 2390 [2021-01-20 12:00:31,939 INFO L226 Difference]: Without dead ends: 2120 [2021-01-20 12:00:31,941 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-01-20 12:00:31,941 INFO L78 Accepts]: Start accepts. Automaton has 2120 states. Word has length 51 [2021-01-20 12:00:31,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:31,941 INFO L481 AbstractCegarLoop]: Abstraction has 2120 states. [2021-01-20 12:00:31,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:31,942 INFO L276 IsEmpty]: Start isEmpty. Operand 2120 states. [2021-01-20 12:00:31,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-20 12:00:31,946 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:31,946 INFO L504 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] [2021-01-20 12:00:32,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-20 12:00:32,162 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:32,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:32,163 INFO L82 PathProgramCache]: Analyzing trace with hash -861941604, now seen corresponding path program 6 times [2021-01-20 12:00:32,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:32,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502789019] [2021-01-20 12:00:32,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:32,351 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:32,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502789019] [2021-01-20 12:00:32,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140577950] [2021-01-20 12:00:32,352 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 [2021-01-20 12:00:32,433 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-01-20 12:00:32,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:32,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-20 12:00:32,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:32,461 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:00:32,507 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:32,513 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:32,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:32,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-01-20 12:00:32,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661533754] [2021-01-20 12:00:32,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-20 12:00:32,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:32,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-20 12:00:32,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-01-20 12:00:32,516 INFO L87 Difference]: Start difference. First operand 2120 states. 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) [2021-01-20 12:00:32,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:32,781 INFO L93 Difference]: Finished difference Result 2440 states and 5960 transitions. [2021-01-20 12:00:32,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-20 12:00:32,782 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 [2021-01-20 12:00:32,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:32,787 INFO L225 Difference]: With dead ends: 2440 [2021-01-20 12:00:32,788 INFO L226 Difference]: Without dead ends: 2170 [2021-01-20 12:00:32,788 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2021-01-20 12:00:32,788 INFO L78 Accepts]: Start accepts. Automaton has 2170 states. Word has length 51 [2021-01-20 12:00:32,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:32,789 INFO L481 AbstractCegarLoop]: Abstraction has 2170 states. [2021-01-20 12:00:32,789 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) [2021-01-20 12:00:32,789 INFO L276 IsEmpty]: Start isEmpty. Operand 2170 states. [2021-01-20 12:00:32,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-20 12:00:32,793 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:32,793 INFO L504 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] [2021-01-20 12:00:33,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-20 12:00:33,008 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:33,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:33,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1106515018, now seen corresponding path program 7 times [2021-01-20 12:00:33,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:33,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160819707] [2021-01-20 12:00:33,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:33,203 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:33,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160819707] [2021-01-20 12:00:33,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240684706] [2021-01-20 12:00:33,204 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 [2021-01-20 12:00:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:33,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-20 12:00:33,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:33,320 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:33,327 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:33,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:33,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-01-20 12:00:33,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963252750] [2021-01-20 12:00:33,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-20 12:00:33,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:33,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-20 12:00:33,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-01-20 12:00:33,329 INFO L87 Difference]: Start difference. First operand 2170 states. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:33,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:33,586 INFO L93 Difference]: Finished difference Result 2490 states and 6060 transitions. [2021-01-20 12:00:33,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-20 12:00:33,586 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:00:33,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:33,592 INFO L225 Difference]: With dead ends: 2490 [2021-01-20 12:00:33,592 INFO L226 Difference]: Without dead ends: 2220 [2021-01-20 12:00:33,592 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2021-01-20 12:00:33,592 INFO L78 Accepts]: Start accepts. Automaton has 2220 states. Word has length 51 [2021-01-20 12:00:33,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:33,593 INFO L481 AbstractCegarLoop]: Abstraction has 2220 states. [2021-01-20 12:00:33,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:33,593 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states. [2021-01-20 12:00:33,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-20 12:00:33,597 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:33,597 INFO L504 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] [2021-01-20 12:00:33,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:00:33,811 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:33,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:33,812 INFO L82 PathProgramCache]: Analyzing trace with hash -186912122, now seen corresponding path program 8 times [2021-01-20 12:00:33,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:33,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728257701] [2021-01-20 12:00:33,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:33,950 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:33,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728257701] [2021-01-20 12:00:33,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761322996] [2021-01-20 12:00:33,950 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 [2021-01-20 12:00:34,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:00:34,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:34,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-20 12:00:34,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:34,039 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:00:34,085 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:34,093 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:34,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:34,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-01-20 12:00:34,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837030326] [2021-01-20 12:00:34,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-20 12:00:34,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:34,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-20 12:00:34,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-01-20 12:00:34,097 INFO L87 Difference]: Start difference. First operand 2220 states. 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) [2021-01-20 12:00:34,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:34,452 INFO L93 Difference]: Finished difference Result 2770 states and 6700 transitions. [2021-01-20 12:00:34,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-20 12:00:34,453 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 [2021-01-20 12:00:34,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:34,461 INFO L225 Difference]: With dead ends: 2770 [2021-01-20 12:00:34,461 INFO L226 Difference]: Without dead ends: 2470 [2021-01-20 12:00:34,461 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2021-01-20 12:00:34,461 INFO L78 Accepts]: Start accepts. Automaton has 2470 states. Word has length 51 [2021-01-20 12:00:34,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:34,462 INFO L481 AbstractCegarLoop]: Abstraction has 2470 states. [2021-01-20 12:00:34,462 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) [2021-01-20 12:00:34,463 INFO L276 IsEmpty]: Start isEmpty. Operand 2470 states. [2021-01-20 12:00:34,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-20 12:00:34,467 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:34,467 INFO L504 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] [2021-01-20 12:00:34,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2021-01-20 12:00:34,683 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:34,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:34,683 INFO L82 PathProgramCache]: Analyzing trace with hash 165163796, now seen corresponding path program 9 times [2021-01-20 12:00:34,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:34,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32801782] [2021-01-20 12:00:34,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:34,841 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:34,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32801782] [2021-01-20 12:00:34,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938230089] [2021-01-20 12:00:34,842 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 [2021-01-20 12:00:34,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-20 12:00:34,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:34,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-20 12:00:34,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:34,956 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:34,963 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:34,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:34,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-01-20 12:00:34,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654292407] [2021-01-20 12:00:34,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-20 12:00:34,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:34,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-20 12:00:34,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-01-20 12:00:34,966 INFO L87 Difference]: Start difference. First operand 2470 states. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:35,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:35,289 INFO L93 Difference]: Finished difference Result 3942 states and 10004 transitions. [2021-01-20 12:00:35,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-20 12:00:35,290 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:00:35,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:35,297 INFO L225 Difference]: With dead ends: 3942 [2021-01-20 12:00:35,297 INFO L226 Difference]: Without dead ends: 3657 [2021-01-20 12:00:35,297 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2021-01-20 12:00:35,298 INFO L78 Accepts]: Start accepts. Automaton has 3657 states. Word has length 51 [2021-01-20 12:00:35,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:35,298 INFO L481 AbstractCegarLoop]: Abstraction has 3657 states. [2021-01-20 12:00:35,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:35,298 INFO L276 IsEmpty]: Start isEmpty. Operand 3657 states. [2021-01-20 12:00:35,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-20 12:00:35,302 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:35,302 INFO L504 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] [2021-01-20 12:00:35,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:00:35,516 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:35,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:35,517 INFO L82 PathProgramCache]: Analyzing trace with hash 162190566, now seen corresponding path program 10 times [2021-01-20 12:00:35,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:35,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105314613] [2021-01-20 12:00:35,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:35,675 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:35,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105314613] [2021-01-20 12:00:35,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026737880] [2021-01-20 12:00:35,676 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 [2021-01-20 12:00:35,770 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:00:35,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:35,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-20 12:00:35,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:35,805 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:00:35,817 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:35,823 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:35,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:35,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-01-20 12:00:35,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253977673] [2021-01-20 12:00:35,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-20 12:00:35,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:35,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-20 12:00:35,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-01-20 12:00:35,826 INFO L87 Difference]: Start difference. First operand 3657 states. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:36,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:36,285 INFO L93 Difference]: Finished difference Result 3209 states and 7801 transitions. [2021-01-20 12:00:36,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-20 12:00:36,286 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:00:36,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:36,289 INFO L225 Difference]: With dead ends: 3209 [2021-01-20 12:00:36,290 INFO L226 Difference]: Without dead ends: 2640 [2021-01-20 12:00:36,290 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2021-01-20 12:00:36,290 INFO L78 Accepts]: Start accepts. Automaton has 2640 states. Word has length 51 [2021-01-20 12:00:36,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:36,291 INFO L481 AbstractCegarLoop]: Abstraction has 2640 states. [2021-01-20 12:00:36,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:36,291 INFO L276 IsEmpty]: Start isEmpty. Operand 2640 states. [2021-01-20 12:00:36,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-20 12:00:36,296 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:36,296 INFO L504 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] [2021-01-20 12:00:36,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-01-20 12:00:36,509 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:36,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:36,510 INFO L82 PathProgramCache]: Analyzing trace with hash -688928278, now seen corresponding path program 11 times [2021-01-20 12:00:36,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:36,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219989663] [2021-01-20 12:00:36,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:36,650 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:36,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219989663] [2021-01-20 12:00:36,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659314399] [2021-01-20 12:00:36,650 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 [2021-01-20 12:00:36,718 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-01-20 12:00:36,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:36,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-20 12:00:36,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:36,741 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:36,750 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:36,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:36,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-01-20 12:00:36,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897554477] [2021-01-20 12:00:36,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-20 12:00:36,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:36,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-20 12:00:36,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-01-20 12:00:36,754 INFO L87 Difference]: Start difference. First operand 2640 states. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:36,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:36,975 INFO L93 Difference]: Finished difference Result 2960 states and 7150 transitions. [2021-01-20 12:00:36,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-20 12:00:36,976 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:00:36,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:36,979 INFO L225 Difference]: With dead ends: 2960 [2021-01-20 12:00:36,980 INFO L226 Difference]: Without dead ends: 2690 [2021-01-20 12:00:36,980 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2021-01-20 12:00:36,980 INFO L78 Accepts]: Start accepts. Automaton has 2690 states. Word has length 56 [2021-01-20 12:00:36,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:36,981 INFO L481 AbstractCegarLoop]: Abstraction has 2690 states. [2021-01-20 12:00:36,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:36,981 INFO L276 IsEmpty]: Start isEmpty. Operand 2690 states. [2021-01-20 12:00:36,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-20 12:00:36,986 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:36,986 INFO L504 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] [2021-01-20 12:00:37,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:00:37,198 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:37,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:37,199 INFO L82 PathProgramCache]: Analyzing trace with hash -222787652, now seen corresponding path program 12 times [2021-01-20 12:00:37,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:37,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029249351] [2021-01-20 12:00:37,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:37,335 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:37,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029249351] [2021-01-20 12:00:37,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130925313] [2021-01-20 12:00:37,335 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 [2021-01-20 12:00:37,404 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-01-20 12:00:37,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:37,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-20 12:00:37,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:37,437 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:00:37,452 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:37,459 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:37,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:37,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-01-20 12:00:37,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590997982] [2021-01-20 12:00:37,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-20 12:00:37,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:37,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-20 12:00:37,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-01-20 12:00:37,461 INFO L87 Difference]: Start difference. First operand 2690 states. 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) [2021-01-20 12:00:37,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:37,775 INFO L93 Difference]: Finished difference Result 3010 states and 7250 transitions. [2021-01-20 12:00:37,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-20 12:00:37,776 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 [2021-01-20 12:00:37,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:37,779 INFO L225 Difference]: With dead ends: 3010 [2021-01-20 12:00:37,779 INFO L226 Difference]: Without dead ends: 2740 [2021-01-20 12:00:37,780 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2021-01-20 12:00:37,780 INFO L78 Accepts]: Start accepts. Automaton has 2740 states. Word has length 56 [2021-01-20 12:00:37,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:37,780 INFO L481 AbstractCegarLoop]: Abstraction has 2740 states. [2021-01-20 12:00:37,780 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) [2021-01-20 12:00:37,780 INFO L276 IsEmpty]: Start isEmpty. Operand 2740 states. [2021-01-20 12:00:37,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-20 12:00:37,784 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:37,785 INFO L504 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] [2021-01-20 12:00:37,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-01-20 12:00:37,997 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:37,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:37,998 INFO L82 PathProgramCache]: Analyzing trace with hash -467361066, now seen corresponding path program 13 times [2021-01-20 12:00:37,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:37,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190414913] [2021-01-20 12:00:37,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:38,194 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:38,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190414913] [2021-01-20 12:00:38,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17812121] [2021-01-20 12:00:38,195 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 [2021-01-20 12:00:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:38,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-20 12:00:38,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:38,293 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:38,300 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:38,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:38,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-01-20 12:00:38,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61671757] [2021-01-20 12:00:38,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-20 12:00:38,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:38,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-20 12:00:38,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-01-20 12:00:38,302 INFO L87 Difference]: Start difference. First operand 2740 states. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:38,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:38,561 INFO L93 Difference]: Finished difference Result 3060 states and 7350 transitions. [2021-01-20 12:00:38,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-20 12:00:38,562 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:00:38,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:38,565 INFO L225 Difference]: With dead ends: 3060 [2021-01-20 12:00:38,566 INFO L226 Difference]: Without dead ends: 2790 [2021-01-20 12:00:38,566 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2021-01-20 12:00:38,566 INFO L78 Accepts]: Start accepts. Automaton has 2790 states. Word has length 56 [2021-01-20 12:00:38,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:38,566 INFO L481 AbstractCegarLoop]: Abstraction has 2790 states. [2021-01-20 12:00:38,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:38,567 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states. [2021-01-20 12:00:38,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-20 12:00:38,571 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:38,571 INFO L504 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] [2021-01-20 12:00:38,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-01-20 12:00:38,784 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:38,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:38,785 INFO L82 PathProgramCache]: Analyzing trace with hash 452241830, now seen corresponding path program 14 times [2021-01-20 12:00:38,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:38,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813254805] [2021-01-20 12:00:38,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:38,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:38,912 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:38,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813254805] [2021-01-20 12:00:38,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414669088] [2021-01-20 12:00:38,912 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 [2021-01-20 12:00:38,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:00:38,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:38,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-20 12:00:38,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:39,009 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:00:39,031 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:39,039 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:39,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:39,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-01-20 12:00:39,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38002985] [2021-01-20 12:00:39,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-20 12:00:39,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:39,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-20 12:00:39,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-01-20 12:00:39,041 INFO L87 Difference]: Start difference. First operand 2790 states. 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) [2021-01-20 12:00:39,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:39,434 INFO L93 Difference]: Finished difference Result 3150 states and 7530 transitions. [2021-01-20 12:00:39,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-20 12:00:39,434 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 [2021-01-20 12:00:39,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:39,438 INFO L225 Difference]: With dead ends: 3150 [2021-01-20 12:00:39,438 INFO L226 Difference]: Without dead ends: 2880 [2021-01-20 12:00:39,439 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2021-01-20 12:00:39,439 INFO L78 Accepts]: Start accepts. Automaton has 2880 states. Word has length 56 [2021-01-20 12:00:39,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:39,439 INFO L481 AbstractCegarLoop]: Abstraction has 2880 states. [2021-01-20 12:00:39,439 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) [2021-01-20 12:00:39,439 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states. [2021-01-20 12:00:39,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-20 12:00:39,444 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:39,444 INFO L504 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] [2021-01-20 12:00:39,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-01-20 12:00:39,656 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:39,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:39,658 INFO L82 PathProgramCache]: Analyzing trace with hash 804317748, now seen corresponding path program 15 times [2021-01-20 12:00:39,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:39,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123535809] [2021-01-20 12:00:39,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:39,785 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:39,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123535809] [2021-01-20 12:00:39,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638117105] [2021-01-20 12:00:39,785 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 [2021-01-20 12:00:39,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-20 12:00:39,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:39,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-20 12:00:39,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:39,878 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:39,884 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:39,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:39,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-01-20 12:00:39,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547431971] [2021-01-20 12:00:39,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-20 12:00:39,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:39,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-20 12:00:39,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-01-20 12:00:39,885 INFO L87 Difference]: Start difference. First operand 2880 states. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:40,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:40,218 INFO L93 Difference]: Finished difference Result 4352 states and 10894 transitions. [2021-01-20 12:00:40,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-20 12:00:40,218 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:00:40,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:40,223 INFO L225 Difference]: With dead ends: 4352 [2021-01-20 12:00:40,223 INFO L226 Difference]: Without dead ends: 4082 [2021-01-20 12:00:40,223 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2021-01-20 12:00:40,223 INFO L78 Accepts]: Start accepts. Automaton has 4082 states. Word has length 56 [2021-01-20 12:00:40,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:40,224 INFO L481 AbstractCegarLoop]: Abstraction has 4082 states. [2021-01-20 12:00:40,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:40,224 INFO L276 IsEmpty]: Start isEmpty. Operand 4082 states. [2021-01-20 12:00:40,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-20 12:00:40,228 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:40,228 INFO L504 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] [2021-01-20 12:00:40,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-01-20 12:00:40,429 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:40,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:40,430 INFO L82 PathProgramCache]: Analyzing trace with hash 801344518, now seen corresponding path program 16 times [2021-01-20 12:00:40,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:40,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708305932] [2021-01-20 12:00:40,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:40,555 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:40,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708305932] [2021-01-20 12:00:40,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027926439] [2021-01-20 12:00:40,555 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 [2021-01-20 12:00:40,676 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:00:40,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:40,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-20 12:00:40,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:40,704 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:00:40,728 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:40,736 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:40,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:40,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-01-20 12:00:40,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395883585] [2021-01-20 12:00:40,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-20 12:00:40,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:40,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-20 12:00:40,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-01-20 12:00:40,738 INFO L87 Difference]: Start difference. First operand 4082 states. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:41,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:41,371 INFO L93 Difference]: Finished difference Result 4090 states and 9856 transitions. [2021-01-20 12:00:41,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-20 12:00:41,372 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:00:41,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:41,375 INFO L225 Difference]: With dead ends: 4090 [2021-01-20 12:00:41,376 INFO L226 Difference]: Without dead ends: 3435 [2021-01-20 12:00:41,376 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=252, Invalid=740, Unknown=0, NotChecked=0, Total=992 [2021-01-20 12:00:41,376 INFO L78 Accepts]: Start accepts. Automaton has 3435 states. Word has length 56 [2021-01-20 12:00:41,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:41,377 INFO L481 AbstractCegarLoop]: Abstraction has 3435 states. [2021-01-20 12:00:41,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:41,377 INFO L276 IsEmpty]: Start isEmpty. Operand 3435 states. [2021-01-20 12:00:41,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-20 12:00:41,382 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:41,382 INFO L504 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] [2021-01-20 12:00:41,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-01-20 12:00:41,583 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:41,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:41,585 INFO L82 PathProgramCache]: Analyzing trace with hash 548080699, now seen corresponding path program 17 times [2021-01-20 12:00:41,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:41,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778338887] [2021-01-20 12:00:41,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:41,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:41,745 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:41,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778338887] [2021-01-20 12:00:41,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482875369] [2021-01-20 12:00:41,746 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 [2021-01-20 12:00:41,820 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-01-20 12:00:41,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:41,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-20 12:00:41,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:41,836 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:41,845 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:41,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:41,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-01-20 12:00:41,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291514757] [2021-01-20 12:00:41,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-20 12:00:41,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:41,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-20 12:00:41,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-01-20 12:00:41,847 INFO L87 Difference]: Start difference. First operand 3435 states. 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) [2021-01-20 12:00:42,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:42,071 INFO L93 Difference]: Finished difference Result 3755 states and 8950 transitions. [2021-01-20 12:00:42,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-20 12:00:42,072 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 [2021-01-20 12:00:42,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:42,076 INFO L225 Difference]: With dead ends: 3755 [2021-01-20 12:00:42,076 INFO L226 Difference]: Without dead ends: 3485 [2021-01-20 12:00:42,076 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-01-20 12:00:42,077 INFO L78 Accepts]: Start accepts. Automaton has 3485 states. Word has length 61 [2021-01-20 12:00:42,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:42,077 INFO L481 AbstractCegarLoop]: Abstraction has 3485 states. [2021-01-20 12:00:42,077 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) [2021-01-20 12:00:42,077 INFO L276 IsEmpty]: Start isEmpty. Operand 3485 states. [2021-01-20 12:00:42,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-20 12:00:42,081 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:42,082 INFO L504 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] [2021-01-20 12:00:42,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:00:42,284 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:42,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:42,286 INFO L82 PathProgramCache]: Analyzing trace with hash 503720845, now seen corresponding path program 18 times [2021-01-20 12:00:42,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:42,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296510893] [2021-01-20 12:00:42,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:42,450 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:42,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296510893] [2021-01-20 12:00:42,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842745920] [2021-01-20 12:00:42,450 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 [2021-01-20 12:00:42,519 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-01-20 12:00:42,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:42,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-20 12:00:42,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:42,539 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:00:42,555 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:42,568 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:42,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:42,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-01-20 12:00:42,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080837753] [2021-01-20 12:00:42,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-20 12:00:42,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:42,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-20 12:00:42,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-01-20 12:00:42,572 INFO L87 Difference]: Start difference. First operand 3485 states. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:42,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:42,869 INFO L93 Difference]: Finished difference Result 3805 states and 9050 transitions. [2021-01-20 12:00:42,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-20 12:00:42,869 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:00:42,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:42,873 INFO L225 Difference]: With dead ends: 3805 [2021-01-20 12:00:42,874 INFO L226 Difference]: Without dead ends: 3535 [2021-01-20 12:00:42,874 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2021-01-20 12:00:42,874 INFO L78 Accepts]: Start accepts. Automaton has 3535 states. Word has length 61 [2021-01-20 12:00:42,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:42,875 INFO L481 AbstractCegarLoop]: Abstraction has 3535 states. [2021-01-20 12:00:42,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:42,875 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states. [2021-01-20 12:00:42,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-20 12:00:42,879 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:42,879 INFO L504 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] [2021-01-20 12:00:43,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:00:43,081 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:43,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:43,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1988537895, now seen corresponding path program 19 times [2021-01-20 12:00:43,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:43,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116241977] [2021-01-20 12:00:43,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:43,225 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:43,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116241977] [2021-01-20 12:00:43,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327228221] [2021-01-20 12:00:43,226 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 [2021-01-20 12:00:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:43,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-20 12:00:43,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:43,315 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:43,323 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:43,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:43,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-01-20 12:00:43,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484197501] [2021-01-20 12:00:43,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-20 12:00:43,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:43,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-20 12:00:43,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-01-20 12:00:43,325 INFO L87 Difference]: Start difference. First operand 3535 states. 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) [2021-01-20 12:00:43,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:43,706 INFO L93 Difference]: Finished difference Result 3855 states and 9150 transitions. [2021-01-20 12:00:43,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-20 12:00:43,707 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 [2021-01-20 12:00:43,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:43,711 INFO L225 Difference]: With dead ends: 3855 [2021-01-20 12:00:43,711 INFO L226 Difference]: Without dead ends: 3585 [2021-01-20 12:00:43,712 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2021-01-20 12:00:43,712 INFO L78 Accepts]: Start accepts. Automaton has 3585 states. Word has length 61 [2021-01-20 12:00:43,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:43,713 INFO L481 AbstractCegarLoop]: Abstraction has 3585 states. [2021-01-20 12:00:43,713 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) [2021-01-20 12:00:43,713 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states. [2021-01-20 12:00:43,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-20 12:00:43,719 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:43,719 INFO L504 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] [2021-01-20 12:00:43,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:00:43,919 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:43,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:43,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1084722953, now seen corresponding path program 20 times [2021-01-20 12:00:43,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:43,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271883876] [2021-01-20 12:00:43,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:44,062 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:44,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271883876] [2021-01-20 12:00:44,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228285223] [2021-01-20 12:00:44,063 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 [2021-01-20 12:00:44,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:00:44,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:44,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-20 12:00:44,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:44,159 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:00:44,175 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:44,188 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:44,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:44,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-01-20 12:00:44,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027394394] [2021-01-20 12:00:44,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-20 12:00:44,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:44,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-20 12:00:44,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-01-20 12:00:44,190 INFO L87 Difference]: Start difference. First operand 3585 states. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:44,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:44,610 INFO L93 Difference]: Finished difference Result 3955 states and 9350 transitions. [2021-01-20 12:00:44,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-20 12:00:44,611 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:00:44,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:44,616 INFO L225 Difference]: With dead ends: 3955 [2021-01-20 12:00:44,616 INFO L226 Difference]: Without dead ends: 3685 [2021-01-20 12:00:44,616 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=169, Invalid=533, Unknown=0, NotChecked=0, Total=702 [2021-01-20 12:00:44,617 INFO L78 Accepts]: Start accepts. Automaton has 3685 states. Word has length 61 [2021-01-20 12:00:44,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:44,617 INFO L481 AbstractCegarLoop]: Abstraction has 3685 states. [2021-01-20 12:00:44,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:44,617 INFO L276 IsEmpty]: Start isEmpty. Operand 3685 states. [2021-01-20 12:00:44,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-20 12:00:44,621 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:44,621 INFO L504 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] [2021-01-20 12:00:44,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-01-20 12:00:44,822 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:44,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:44,823 INFO L82 PathProgramCache]: Analyzing trace with hash 2120210981, now seen corresponding path program 21 times [2021-01-20 12:00:44,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:44,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268680059] [2021-01-20 12:00:44,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:44,949 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:44,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268680059] [2021-01-20 12:00:44,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306933273] [2021-01-20 12:00:44,950 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 [2021-01-20 12:00:45,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-20 12:00:45,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:45,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-20 12:00:45,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:45,039 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:45,046 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:45,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:45,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-01-20 12:00:45,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741932267] [2021-01-20 12:00:45,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-20 12:00:45,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:45,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-20 12:00:45,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-01-20 12:00:45,048 INFO L87 Difference]: Start difference. First operand 3685 states. 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) [2021-01-20 12:00:45,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:45,426 INFO L93 Difference]: Finished difference Result 4005 states and 9450 transitions. [2021-01-20 12:00:45,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-20 12:00:45,426 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 [2021-01-20 12:00:45,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:45,430 INFO L225 Difference]: With dead ends: 4005 [2021-01-20 12:00:45,430 INFO L226 Difference]: Without dead ends: 3735 [2021-01-20 12:00:45,430 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2021-01-20 12:00:45,431 INFO L78 Accepts]: Start accepts. Automaton has 3735 states. Word has length 61 [2021-01-20 12:00:45,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:45,431 INFO L481 AbstractCegarLoop]: Abstraction has 3735 states. [2021-01-20 12:00:45,431 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) [2021-01-20 12:00:45,431 INFO L276 IsEmpty]: Start isEmpty. Operand 3735 states. [2021-01-20 12:00:45,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-20 12:00:45,435 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:45,435 INFO L504 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] [2021-01-20 12:00:45,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:00:45,636 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:45,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:45,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1255153419, now seen corresponding path program 22 times [2021-01-20 12:00:45,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:45,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789521017] [2021-01-20 12:00:45,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:45,785 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:45,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789521017] [2021-01-20 12:00:45,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276096759] [2021-01-20 12:00:45,786 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 [2021-01-20 12:00:45,856 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:00:45,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:45,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-20 12:00:45,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:45,880 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:00:45,903 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:45,910 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:45,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:45,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-01-20 12:00:45,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574180743] [2021-01-20 12:00:45,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-20 12:00:45,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:45,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-20 12:00:45,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-01-20 12:00:45,911 INFO L87 Difference]: Start difference. First operand 3735 states. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:46,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:46,401 INFO L93 Difference]: Finished difference Result 4095 states and 9630 transitions. [2021-01-20 12:00:46,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-20 12:00:46,401 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:00:46,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:46,406 INFO L225 Difference]: With dead ends: 4095 [2021-01-20 12:00:46,406 INFO L226 Difference]: Without dead ends: 3795 [2021-01-20 12:00:46,406 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2021-01-20 12:00:46,406 INFO L78 Accepts]: Start accepts. Automaton has 3795 states. Word has length 61 [2021-01-20 12:00:46,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:46,406 INFO L481 AbstractCegarLoop]: Abstraction has 3795 states. [2021-01-20 12:00:46,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:46,407 INFO L276 IsEmpty]: Start isEmpty. Operand 3795 states. [2021-01-20 12:00:46,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-20 12:00:46,412 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:46,413 INFO L504 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] [2021-01-20 12:00:46,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-01-20 12:00:46,627 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:46,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:46,628 INFO L82 PathProgramCache]: Analyzing trace with hash -903077501, now seen corresponding path program 23 times [2021-01-20 12:00:46,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:46,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86448354] [2021-01-20 12:00:46,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:46,810 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:46,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86448354] [2021-01-20 12:00:46,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746942624] [2021-01-20 12:00:46,811 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 [2021-01-20 12:00:46,882 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-01-20 12:00:46,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:46,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-20 12:00:46,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:46,915 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:46,924 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:46,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:46,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-01-20 12:00:46,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085151876] [2021-01-20 12:00:46,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-20 12:00:46,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:46,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-20 12:00:46,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-01-20 12:00:46,926 INFO L87 Difference]: Start difference. First operand 3795 states. 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) [2021-01-20 12:00:47,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:47,353 INFO L93 Difference]: Finished difference Result 5267 states and 12934 transitions. [2021-01-20 12:00:47,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-20 12:00:47,353 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 [2021-01-20 12:00:47,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:47,358 INFO L225 Difference]: With dead ends: 5267 [2021-01-20 12:00:47,358 INFO L226 Difference]: Without dead ends: 4982 [2021-01-20 12:00:47,359 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=230, Invalid=582, Unknown=0, NotChecked=0, Total=812 [2021-01-20 12:00:47,359 INFO L78 Accepts]: Start accepts. Automaton has 4982 states. Word has length 61 [2021-01-20 12:00:47,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:47,359 INFO L481 AbstractCegarLoop]: Abstraction has 4982 states. [2021-01-20 12:00:47,359 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) [2021-01-20 12:00:47,359 INFO L276 IsEmpty]: Start isEmpty. Operand 4982 states. [2021-01-20 12:00:47,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-20 12:00:47,363 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:47,363 INFO L504 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] [2021-01-20 12:00:47,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:00:47,565 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:47,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:47,566 INFO L82 PathProgramCache]: Analyzing trace with hash -906050731, now seen corresponding path program 24 times [2021-01-20 12:00:47,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:47,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076553699] [2021-01-20 12:00:47,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:47,700 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:47,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076553699] [2021-01-20 12:00:47,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036116778] [2021-01-20 12:00:47,701 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 [2021-01-20 12:00:47,772 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-01-20 12:00:47,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:47,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-20 12:00:47,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:47,827 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:47,834 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:47,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:47,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-01-20 12:00:47,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524922460] [2021-01-20 12:00:47,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-20 12:00:47,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:47,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-20 12:00:47,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-01-20 12:00:47,838 INFO L87 Difference]: Start difference. First operand 4982 states. Second operand has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 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) [2021-01-20 12:00:48,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:48,440 INFO L93 Difference]: Finished difference Result 4915 states and 11671 transitions. [2021-01-20 12:00:48,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-20 12:00:48,441 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 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 [2021-01-20 12:00:48,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:48,447 INFO L225 Difference]: With dead ends: 4915 [2021-01-20 12:00:48,447 INFO L226 Difference]: Without dead ends: 4230 [2021-01-20 12:00:48,448 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=288, Invalid=902, Unknown=0, NotChecked=0, Total=1190 [2021-01-20 12:00:48,448 INFO L78 Accepts]: Start accepts. Automaton has 4230 states. Word has length 61 [2021-01-20 12:00:48,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:48,448 INFO L481 AbstractCegarLoop]: Abstraction has 4230 states. [2021-01-20 12:00:48,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 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) [2021-01-20 12:00:48,448 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states. [2021-01-20 12:00:48,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-20 12:00:48,454 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:48,454 INFO L504 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] [2021-01-20 12:00:48,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-01-20 12:00:48,661 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:48,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:48,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1591649445, now seen corresponding path program 25 times [2021-01-20 12:00:48,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:48,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972875080] [2021-01-20 12:00:48,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:48,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:48,827 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:48,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972875080] [2021-01-20 12:00:48,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460255139] [2021-01-20 12:00:48,827 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 [2021-01-20 12:00:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:48,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-20 12:00:48,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:48,932 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:48,942 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:48,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:48,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-01-20 12:00:48,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997642713] [2021-01-20 12:00:48,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-20 12:00:48,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:48,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-20 12:00:48,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-01-20 12:00:48,946 INFO L87 Difference]: Start difference. First operand 4230 states. 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) [2021-01-20 12:00:49,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:49,218 INFO L93 Difference]: Finished difference Result 4550 states and 10690 transitions. [2021-01-20 12:00:49,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-20 12:00:49,219 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 [2021-01-20 12:00:49,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:49,224 INFO L225 Difference]: With dead ends: 4550 [2021-01-20 12:00:49,224 INFO L226 Difference]: Without dead ends: 4280 [2021-01-20 12:00:49,225 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2021-01-20 12:00:49,225 INFO L78 Accepts]: Start accepts. Automaton has 4280 states. Word has length 66 [2021-01-20 12:00:49,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:49,225 INFO L481 AbstractCegarLoop]: Abstraction has 4280 states. [2021-01-20 12:00:49,225 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) [2021-01-20 12:00:49,225 INFO L276 IsEmpty]: Start isEmpty. Operand 4280 states. [2021-01-20 12:00:49,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-20 12:00:49,231 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:49,231 INFO L504 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] [2021-01-20 12:00:49,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:00:49,444 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:49,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:49,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1636009299, now seen corresponding path program 26 times [2021-01-20 12:00:49,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:49,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399303554] [2021-01-20 12:00:49,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:49,693 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:49,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399303554] [2021-01-20 12:00:49,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466463637] [2021-01-20 12:00:49,695 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 [2021-01-20 12:00:49,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:00:49,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:49,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-20 12:00:49,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:49,789 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:00:49,829 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:49,846 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:49,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:49,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-01-20 12:00:49,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520614988] [2021-01-20 12:00:49,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-20 12:00:49,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:49,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-20 12:00:49,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-01-20 12:00:49,848 INFO L87 Difference]: Start difference. First operand 4280 states. 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) [2021-01-20 12:00:50,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:50,255 INFO L93 Difference]: Finished difference Result 4600 states and 10790 transitions. [2021-01-20 12:00:50,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-20 12:00:50,255 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 [2021-01-20 12:00:50,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:50,261 INFO L225 Difference]: With dead ends: 4600 [2021-01-20 12:00:50,261 INFO L226 Difference]: Without dead ends: 4330 [2021-01-20 12:00:50,261 INFO L769 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 [2021-01-20 12:00:50,261 INFO L78 Accepts]: Start accepts. Automaton has 4330 states. Word has length 66 [2021-01-20 12:00:50,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:50,262 INFO L481 AbstractCegarLoop]: Abstraction has 4330 states. [2021-01-20 12:00:50,262 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) [2021-01-20 12:00:50,262 INFO L276 IsEmpty]: Start isEmpty. Operand 4330 states. [2021-01-20 12:00:50,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-20 12:00:50,265 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:50,265 INFO L504 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] [2021-01-20 12:00:50,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-01-20 12:00:50,466 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:50,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:50,467 INFO L82 PathProgramCache]: Analyzing trace with hash -151192249, now seen corresponding path program 27 times [2021-01-20 12:00:50,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:50,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899743145] [2021-01-20 12:00:50,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:50,623 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:50,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899743145] [2021-01-20 12:00:50,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543693837] [2021-01-20 12:00:50,624 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 [2021-01-20 12:00:50,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-01-20 12:00:50,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:50,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-20 12:00:50,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:50,743 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:50,755 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:50,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:50,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-01-20 12:00:50,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664730361] [2021-01-20 12:00:50,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-20 12:00:50,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:50,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-20 12:00:50,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-01-20 12:00:50,757 INFO L87 Difference]: Start difference. First operand 4330 states. 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) [2021-01-20 12:00:51,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:51,100 INFO L93 Difference]: Finished difference Result 4650 states and 10890 transitions. [2021-01-20 12:00:51,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-20 12:00:51,100 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 [2021-01-20 12:00:51,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:51,105 INFO L225 Difference]: With dead ends: 4650 [2021-01-20 12:00:51,106 INFO L226 Difference]: Without dead ends: 4380 [2021-01-20 12:00:51,106 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2021-01-20 12:00:51,106 INFO L78 Accepts]: Start accepts. Automaton has 4380 states. Word has length 66 [2021-01-20 12:00:51,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:51,106 INFO L481 AbstractCegarLoop]: Abstraction has 4380 states. [2021-01-20 12:00:51,106 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) [2021-01-20 12:00:51,106 INFO L276 IsEmpty]: Start isEmpty. Operand 4380 states. [2021-01-20 12:00:51,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-20 12:00:51,110 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:51,110 INFO L504 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] [2021-01-20 12:00:51,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-01-20 12:00:51,312 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:51,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:51,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1070514199, now seen corresponding path program 28 times [2021-01-20 12:00:51,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:51,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436153891] [2021-01-20 12:00:51,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:51,472 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:51,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436153891] [2021-01-20 12:00:51,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332299274] [2021-01-20 12:00:51,473 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 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 [2021-01-20 12:00:51,542 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:00:51,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:51,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-20 12:00:51,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:51,573 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:00:51,609 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:51,620 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:51,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:51,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-01-20 12:00:51,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662316848] [2021-01-20 12:00:51,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-20 12:00:51,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:51,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-20 12:00:51,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-01-20 12:00:51,622 INFO L87 Difference]: Start difference. First operand 4380 states. 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) [2021-01-20 12:00:52,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:52,111 INFO L93 Difference]: Finished difference Result 4700 states and 10990 transitions. [2021-01-20 12:00:52,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-20 12:00:52,111 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 [2021-01-20 12:00:52,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:52,116 INFO L225 Difference]: With dead ends: 4700 [2021-01-20 12:00:52,116 INFO L226 Difference]: Without dead ends: 4430 [2021-01-20 12:00:52,117 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=227, Invalid=703, Unknown=0, NotChecked=0, Total=930 [2021-01-20 12:00:52,117 INFO L78 Accepts]: Start accepts. Automaton has 4430 states. Word has length 66 [2021-01-20 12:00:52,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:52,117 INFO L481 AbstractCegarLoop]: Abstraction has 4430 states. [2021-01-20 12:00:52,117 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) [2021-01-20 12:00:52,117 INFO L276 IsEmpty]: Start isEmpty. Operand 4430 states. [2021-01-20 12:00:52,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-20 12:00:52,122 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:52,122 INFO L504 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] [2021-01-20 12:00:52,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-01-20 12:00:52,333 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:52,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:52,334 INFO L82 PathProgramCache]: Analyzing trace with hash -19519163, now seen corresponding path program 29 times [2021-01-20 12:00:52,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:52,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950781902] [2021-01-20 12:00:52,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:52,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:52,582 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:52,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950781902] [2021-01-20 12:00:52,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523564586] [2021-01-20 12:00:52,583 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 [2021-01-20 12:00:52,654 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-01-20 12:00:52,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:52,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-20 12:00:52,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:52,708 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:52,719 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:52,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:52,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-01-20 12:00:52,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78280797] [2021-01-20 12:00:52,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-20 12:00:52,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:52,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-20 12:00:52,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-01-20 12:00:52,721 INFO L87 Difference]: Start difference. First operand 4430 states. 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) [2021-01-20 12:00:53,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:53,156 INFO L93 Difference]: Finished difference Result 4750 states and 11090 transitions. [2021-01-20 12:00:53,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-20 12:00:53,157 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 [2021-01-20 12:00:53,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:53,162 INFO L225 Difference]: With dead ends: 4750 [2021-01-20 12:00:53,162 INFO L226 Difference]: Without dead ends: 4480 [2021-01-20 12:00:53,163 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2021-01-20 12:00:53,163 INFO L78 Accepts]: Start accepts. Automaton has 4480 states. Word has length 66 [2021-01-20 12:00:53,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:53,163 INFO L481 AbstractCegarLoop]: Abstraction has 4480 states. [2021-01-20 12:00:53,163 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) [2021-01-20 12:00:53,163 INFO L276 IsEmpty]: Start isEmpty. Operand 4480 states. [2021-01-20 12:00:53,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-20 12:00:53,167 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:53,168 INFO L504 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] [2021-01-20 12:00:53,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-01-20 12:00:53,381 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:53,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:53,382 INFO L82 PathProgramCache]: Analyzing trace with hash 900083733, now seen corresponding path program 30 times [2021-01-20 12:00:53,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:53,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695174925] [2021-01-20 12:00:53,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:53,554 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:53,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695174925] [2021-01-20 12:00:53,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566699854] [2021-01-20 12:00:53,555 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 [2021-01-20 12:00:53,634 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-01-20 12:00:53,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:53,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-20 12:00:53,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:53,697 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:53,703 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:53,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:53,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-01-20 12:00:53,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455630754] [2021-01-20 12:00:53,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-20 12:00:53,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:53,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-20 12:00:53,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-01-20 12:00:53,704 INFO L87 Difference]: Start difference. First operand 4480 states. 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) [2021-01-20 12:00:54,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:54,311 INFO L93 Difference]: Finished difference Result 5184 states and 12214 transitions. [2021-01-20 12:00:54,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-20 12:00:54,312 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 [2021-01-20 12:00:54,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:54,318 INFO L225 Difference]: With dead ends: 5184 [2021-01-20 12:00:54,319 INFO L226 Difference]: Without dead ends: 4600 [2021-01-20 12:00:54,319 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=243, Invalid=813, Unknown=0, NotChecked=0, Total=1056 [2021-01-20 12:00:54,319 INFO L78 Accepts]: Start accepts. Automaton has 4600 states. Word has length 66 [2021-01-20 12:00:54,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:54,320 INFO L481 AbstractCegarLoop]: Abstraction has 4600 states. [2021-01-20 12:00:54,320 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) [2021-01-20 12:00:54,320 INFO L276 IsEmpty]: Start isEmpty. Operand 4600 states. [2021-01-20 12:00:54,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-20 12:00:54,324 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:54,324 INFO L504 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] [2021-01-20 12:00:54,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:00:54,525 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:54,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:54,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1252159651, now seen corresponding path program 31 times [2021-01-20 12:00:54,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:54,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343837530] [2021-01-20 12:00:54,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:54,668 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:54,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343837530] [2021-01-20 12:00:54,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342078117] [2021-01-20 12:00:54,669 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 [2021-01-20 12:00:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:54,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-20 12:00:54,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:54,777 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:54,786 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:54,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:54,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-01-20 12:00:54,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462445544] [2021-01-20 12:00:54,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-20 12:00:54,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:54,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-20 12:00:54,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-01-20 12:00:54,787 INFO L87 Difference]: Start difference. First operand 4600 states. 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) [2021-01-20 12:00:55,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:55,247 INFO L93 Difference]: Finished difference Result 6072 states and 14744 transitions. [2021-01-20 12:00:55,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-20 12:00:55,247 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 [2021-01-20 12:00:55,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:55,255 INFO L225 Difference]: With dead ends: 6072 [2021-01-20 12:00:55,255 INFO L226 Difference]: Without dead ends: 5787 [2021-01-20 12:00:55,256 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2021-01-20 12:00:55,256 INFO L78 Accepts]: Start accepts. Automaton has 5787 states. Word has length 66 [2021-01-20 12:00:55,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:55,257 INFO L481 AbstractCegarLoop]: Abstraction has 5787 states. [2021-01-20 12:00:55,257 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) [2021-01-20 12:00:55,257 INFO L276 IsEmpty]: Start isEmpty. Operand 5787 states. [2021-01-20 12:00:55,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-20 12:00:55,262 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:55,263 INFO L504 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] [2021-01-20 12:00:55,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-01-20 12:00:55,477 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:55,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:55,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1249186421, now seen corresponding path program 32 times [2021-01-20 12:00:55,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:55,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816006151] [2021-01-20 12:00:55,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:55,618 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:55,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816006151] [2021-01-20 12:00:55,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268492253] [2021-01-20 12:00:55,618 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 [2021-01-20 12:00:55,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:00:55,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:55,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-20 12:00:55,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:55,746 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:55,754 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:55,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:55,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-01-20 12:00:55,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100970937] [2021-01-20 12:00:55,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-20 12:00:55,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:55,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-20 12:00:55,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-01-20 12:00:55,756 INFO L87 Difference]: Start difference. First operand 5787 states. 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) [2021-01-20 12:00:56,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:56,455 INFO L93 Difference]: Finished difference Result 5339 states and 12541 transitions. [2021-01-20 12:00:56,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-20 12:00:56,456 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 [2021-01-20 12:00:56,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:56,461 INFO L225 Difference]: With dead ends: 5339 [2021-01-20 12:00:56,461 INFO L226 Difference]: Without dead ends: 4710 [2021-01-20 12:00:56,461 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=253, Invalid=739, Unknown=0, NotChecked=0, Total=992 [2021-01-20 12:00:56,461 INFO L78 Accepts]: Start accepts. Automaton has 4710 states. Word has length 66 [2021-01-20 12:00:56,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:56,462 INFO L481 AbstractCegarLoop]: Abstraction has 4710 states. [2021-01-20 12:00:56,462 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) [2021-01-20 12:00:56,462 INFO L276 IsEmpty]: Start isEmpty. Operand 4710 states. [2021-01-20 12:00:56,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-20 12:00:56,466 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:56,466 INFO L504 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] [2021-01-20 12:00:56,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-01-20 12:00:56,667 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:56,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:56,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1334750316, now seen corresponding path program 33 times [2021-01-20 12:00:56,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:56,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131234585] [2021-01-20 12:00:56,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:56,844 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:56,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131234585] [2021-01-20 12:00:56,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35594099] [2021-01-20 12:00:56,844 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 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 [2021-01-20 12:00:56,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-01-20 12:00:56,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:56,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-20 12:00:56,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:56,935 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:56,946 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:56,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:56,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-01-20 12:00:56,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815720238] [2021-01-20 12:00:56,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-20 12:00:56,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:56,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-20 12:00:56,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-01-20 12:00:56,948 INFO L87 Difference]: Start difference. First operand 4710 states. 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) [2021-01-20 12:00:57,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:57,232 INFO L93 Difference]: Finished difference Result 5030 states and 11740 transitions. [2021-01-20 12:00:57,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-20 12:00:57,233 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 [2021-01-20 12:00:57,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:57,238 INFO L225 Difference]: With dead ends: 5030 [2021-01-20 12:00:57,238 INFO L226 Difference]: Without dead ends: 4760 [2021-01-20 12:00:57,238 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2021-01-20 12:00:57,239 INFO L78 Accepts]: Start accepts. Automaton has 4760 states. Word has length 71 [2021-01-20 12:00:57,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:57,239 INFO L481 AbstractCegarLoop]: Abstraction has 4760 states. [2021-01-20 12:00:57,239 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) [2021-01-20 12:00:57,239 INFO L276 IsEmpty]: Start isEmpty. Operand 4760 states. [2021-01-20 12:00:57,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-20 12:00:57,243 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:57,243 INFO L504 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] [2021-01-20 12:00:57,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:00:57,444 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:57,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:57,444 INFO L82 PathProgramCache]: Analyzing trace with hash -99594946, now seen corresponding path program 34 times [2021-01-20 12:00:57,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:57,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141594922] [2021-01-20 12:00:57,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:57,643 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:57,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141594922] [2021-01-20 12:00:57,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069109272] [2021-01-20 12:00:57,644 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 [2021-01-20 12:00:57,715 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:00:57,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:57,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-20 12:00:57,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:57,737 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:00:57,764 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:57,775 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:57,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:57,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-01-20 12:00:57,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998534032] [2021-01-20 12:00:57,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-20 12:00:57,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:57,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-20 12:00:57,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-01-20 12:00:57,777 INFO L87 Difference]: Start difference. First operand 4760 states. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:58,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:58,145 INFO L93 Difference]: Finished difference Result 5080 states and 11840 transitions. [2021-01-20 12:00:58,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-20 12:00:58,145 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:00:58,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:58,150 INFO L225 Difference]: With dead ends: 5080 [2021-01-20 12:00:58,150 INFO L226 Difference]: Without dead ends: 4810 [2021-01-20 12:00:58,151 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2021-01-20 12:00:58,151 INFO L78 Accepts]: Start accepts. Automaton has 4810 states. Word has length 71 [2021-01-20 12:00:58,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:58,151 INFO L481 AbstractCegarLoop]: Abstraction has 4810 states. [2021-01-20 12:00:58,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:00:58,151 INFO L276 IsEmpty]: Start isEmpty. Operand 4810 states. [2021-01-20 12:00:58,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-20 12:00:58,157 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:58,157 INFO L504 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] [2021-01-20 12:00:58,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-01-20 12:00:58,370 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:58,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:58,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1726601048, now seen corresponding path program 35 times [2021-01-20 12:00:58,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:58,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746042094] [2021-01-20 12:00:58,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:58,558 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:58,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746042094] [2021-01-20 12:00:58,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454294887] [2021-01-20 12:00:58,558 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 [2021-01-20 12:00:58,628 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-01-20 12:00:58,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:58,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-20 12:00:58,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:58,649 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:58,660 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:58,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:58,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-01-20 12:00:58,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869034880] [2021-01-20 12:00:58,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-20 12:00:58,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:58,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-20 12:00:58,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-01-20 12:00:58,662 INFO L87 Difference]: Start difference. First operand 4810 states. 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) [2021-01-20 12:00:59,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:00:59,027 INFO L93 Difference]: Finished difference Result 5130 states and 11940 transitions. [2021-01-20 12:00:59,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-20 12:00:59,028 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 [2021-01-20 12:00:59,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:00:59,033 INFO L225 Difference]: With dead ends: 5130 [2021-01-20 12:00:59,033 INFO L226 Difference]: Without dead ends: 4860 [2021-01-20 12:00:59,034 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2021-01-20 12:00:59,034 INFO L78 Accepts]: Start accepts. Automaton has 4860 states. Word has length 71 [2021-01-20 12:00:59,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:00:59,034 INFO L481 AbstractCegarLoop]: Abstraction has 4860 states. [2021-01-20 12:00:59,034 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) [2021-01-20 12:00:59,034 INFO L276 IsEmpty]: Start isEmpty. Operand 4860 states. [2021-01-20 12:00:59,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-20 12:00:59,038 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:00:59,038 INFO L504 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] [2021-01-20 12:00:59,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:00:59,252 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:00:59,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:00:59,252 INFO L82 PathProgramCache]: Analyzing trace with hash -406694360, now seen corresponding path program 36 times [2021-01-20 12:00:59,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:00:59,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671282509] [2021-01-20 12:00:59,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:00:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:00:59,533 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:59,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671282509] [2021-01-20 12:00:59,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793071576] [2021-01-20 12:00:59,534 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 [2021-01-20 12:00:59,607 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-01-20 12:00:59,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:00:59,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-20 12:00:59,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:00:59,637 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:00:59,651 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:00:59,658 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:00:59,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:00:59,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-01-20 12:00:59,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242316569] [2021-01-20 12:00:59,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-20 12:00:59,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:00:59,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-20 12:00:59,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-01-20 12:00:59,660 INFO L87 Difference]: Start difference. First operand 4860 states. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:01:00,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:00,127 INFO L93 Difference]: Finished difference Result 5230 states and 12140 transitions. [2021-01-20 12:01:00,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-20 12:01:00,127 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:01:00,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:00,133 INFO L225 Difference]: With dead ends: 5230 [2021-01-20 12:01:00,133 INFO L226 Difference]: Without dead ends: 4960 [2021-01-20 12:01:00,134 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=221, Invalid=709, Unknown=0, NotChecked=0, Total=930 [2021-01-20 12:01:00,134 INFO L78 Accepts]: Start accepts. Automaton has 4960 states. Word has length 71 [2021-01-20 12:01:00,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:00,134 INFO L481 AbstractCegarLoop]: Abstraction has 4960 states. [2021-01-20 12:01:00,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:01:00,135 INFO L276 IsEmpty]: Start isEmpty. Operand 4960 states. [2021-01-20 12:01:00,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-20 12:01:00,139 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:00,139 INFO L504 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] [2021-01-20 12:01:00,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-01-20 12:01:00,340 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:00,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:00,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1483906518, now seen corresponding path program 37 times [2021-01-20 12:01:00,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:00,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379902020] [2021-01-20 12:01:00,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:00,513 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:00,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379902020] [2021-01-20 12:01:00,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105584728] [2021-01-20 12:01:00,513 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 [2021-01-20 12:01:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:00,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-20 12:01:00,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:00,599 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:00,609 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:00,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:00,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-01-20 12:01:00,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300854777] [2021-01-20 12:01:00,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-20 12:01:00,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:00,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-20 12:01:00,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-01-20 12:01:00,611 INFO L87 Difference]: Start difference. First operand 4960 states. 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) [2021-01-20 12:01:01,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:01,048 INFO L93 Difference]: Finished difference Result 5280 states and 12240 transitions. [2021-01-20 12:01:01,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-20 12:01:01,049 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 [2021-01-20 12:01:01,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:01,054 INFO L225 Difference]: With dead ends: 5280 [2021-01-20 12:01:01,054 INFO L226 Difference]: Without dead ends: 5010 [2021-01-20 12:01:01,054 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=231, Invalid=699, Unknown=0, NotChecked=0, Total=930 [2021-01-20 12:01:01,055 INFO L78 Accepts]: Start accepts. Automaton has 5010 states. Word has length 71 [2021-01-20 12:01:01,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:01,055 INFO L481 AbstractCegarLoop]: Abstraction has 5010 states. [2021-01-20 12:01:01,055 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) [2021-01-20 12:01:01,055 INFO L276 IsEmpty]: Start isEmpty. Operand 5010 states. [2021-01-20 12:01:01,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-20 12:01:01,060 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:01,060 INFO L504 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] [2021-01-20 12:01:01,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-01-20 12:01:01,276 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:01,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:01,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1589354330, now seen corresponding path program 38 times [2021-01-20 12:01:01,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:01,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159067430] [2021-01-20 12:01:01,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:01,468 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:01,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159067430] [2021-01-20 12:01:01,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168850692] [2021-01-20 12:01:01,468 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 [2021-01-20 12:01:01,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:01:01,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:01,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-20 12:01:01,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:01,562 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:01:01,579 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:01,593 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:01,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:01,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-01-20 12:01:01,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671588351] [2021-01-20 12:01:01,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-20 12:01:01,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:01,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-20 12:01:01,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-01-20 12:01:01,594 INFO L87 Difference]: Start difference. First operand 5010 states. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:01:02,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:02,170 INFO L93 Difference]: Finished difference Result 5330 states and 12340 transitions. [2021-01-20 12:01:02,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-20 12:01:02,170 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:01:02,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:02,175 INFO L225 Difference]: With dead ends: 5330 [2021-01-20 12:01:02,176 INFO L226 Difference]: Without dead ends: 5060 [2021-01-20 12:01:02,176 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=253, Invalid=803, Unknown=0, NotChecked=0, Total=1056 [2021-01-20 12:01:02,176 INFO L78 Accepts]: Start accepts. Automaton has 5060 states. Word has length 71 [2021-01-20 12:01:02,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:02,177 INFO L481 AbstractCegarLoop]: Abstraction has 5060 states. [2021-01-20 12:01:02,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:01:02,177 INFO L276 IsEmpty]: Start isEmpty. Operand 5060 states. [2021-01-20 12:01:02,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-20 12:01:02,181 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:02,182 INFO L504 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] [2021-01-20 12:01:02,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-01-20 12:01:02,382 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:02,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:02,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1615579604, now seen corresponding path program 39 times [2021-01-20 12:01:02,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:02,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302733945] [2021-01-20 12:01:02,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:02,538 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:02,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302733945] [2021-01-20 12:01:02,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439214944] [2021-01-20 12:01:02,539 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 [2021-01-20 12:01:02,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-01-20 12:01:02,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:02,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-20 12:01:02,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:02,630 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:02,716 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:02,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:02,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-01-20 12:01:02,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651662155] [2021-01-20 12:01:02,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-20 12:01:02,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:02,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-20 12:01:02,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-01-20 12:01:02,719 INFO L87 Difference]: Start difference. First operand 5060 states. 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) [2021-01-20 12:01:03,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:03,202 INFO L93 Difference]: Finished difference Result 5380 states and 12440 transitions. [2021-01-20 12:01:03,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-20 12:01:03,202 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 [2021-01-20 12:01:03,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:03,208 INFO L225 Difference]: With dead ends: 5380 [2021-01-20 12:01:03,208 INFO L226 Difference]: Without dead ends: 5110 [2021-01-20 12:01:03,208 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=277, Invalid=779, Unknown=0, NotChecked=0, Total=1056 [2021-01-20 12:01:03,208 INFO L78 Accepts]: Start accepts. Automaton has 5110 states. Word has length 71 [2021-01-20 12:01:03,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:03,209 INFO L481 AbstractCegarLoop]: Abstraction has 5110 states. [2021-01-20 12:01:03,209 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) [2021-01-20 12:01:03,209 INFO L276 IsEmpty]: Start isEmpty. Operand 5110 states. [2021-01-20 12:01:03,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-20 12:01:03,213 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:03,213 INFO L504 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] [2021-01-20 12:01:03,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2021-01-20 12:01:03,414 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:03,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:03,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1759784796, now seen corresponding path program 40 times [2021-01-20 12:01:03,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:03,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187732796] [2021-01-20 12:01:03,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:03,563 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:03,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187732796] [2021-01-20 12:01:03,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982721968] [2021-01-20 12:01:03,564 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 [2021-01-20 12:01:03,635 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:01:03,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:03,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-20 12:01:03,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:03,669 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:01:03,690 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:03,697 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:03,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:03,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-01-20 12:01:03,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838215767] [2021-01-20 12:01:03,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-20 12:01:03,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:03,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-20 12:01:03,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-01-20 12:01:03,698 INFO L87 Difference]: Start difference. First operand 5110 states. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:01:04,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:04,333 INFO L93 Difference]: Finished difference Result 5590 states and 12940 transitions. [2021-01-20 12:01:04,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-20 12:01:04,333 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:01:04,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:04,339 INFO L225 Difference]: With dead ends: 5590 [2021-01-20 12:01:04,339 INFO L226 Difference]: Without dead ends: 5290 [2021-01-20 12:01:04,340 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=301, Invalid=889, Unknown=0, NotChecked=0, Total=1190 [2021-01-20 12:01:04,340 INFO L78 Accepts]: Start accepts. Automaton has 5290 states. Word has length 71 [2021-01-20 12:01:04,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:04,340 INFO L481 AbstractCegarLoop]: Abstraction has 5290 states. [2021-01-20 12:01:04,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:01:04,340 INFO L276 IsEmpty]: Start isEmpty. Operand 5290 states. [2021-01-20 12:01:04,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-20 12:01:04,344 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:04,344 INFO L504 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] [2021-01-20 12:01:04,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:01:04,545 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:04,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:04,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1407708878, now seen corresponding path program 41 times [2021-01-20 12:01:04,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:04,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64834008] [2021-01-20 12:01:04,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:04,708 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:04,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64834008] [2021-01-20 12:01:04,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979594918] [2021-01-20 12:01:04,709 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 [2021-01-20 12:01:04,780 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-01-20 12:01:04,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:04,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-20 12:01:04,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:04,804 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:04,812 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:04,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:04,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-01-20 12:01:04,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671347099] [2021-01-20 12:01:04,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-20 12:01:04,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:04,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-20 12:01:04,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-01-20 12:01:04,814 INFO L87 Difference]: Start difference. First operand 5290 states. 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) [2021-01-20 12:01:05,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:05,354 INFO L93 Difference]: Finished difference Result 6762 states and 16244 transitions. [2021-01-20 12:01:05,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-20 12:01:05,354 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 [2021-01-20 12:01:05,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:05,361 INFO L225 Difference]: With dead ends: 6762 [2021-01-20 12:01:05,361 INFO L226 Difference]: Without dead ends: 6477 [2021-01-20 12:01:05,362 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=340, Invalid=850, Unknown=0, NotChecked=0, Total=1190 [2021-01-20 12:01:05,362 INFO L78 Accepts]: Start accepts. Automaton has 6477 states. Word has length 71 [2021-01-20 12:01:05,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:05,362 INFO L481 AbstractCegarLoop]: Abstraction has 6477 states. [2021-01-20 12:01:05,362 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) [2021-01-20 12:01:05,362 INFO L276 IsEmpty]: Start isEmpty. Operand 6477 states. [2021-01-20 12:01:05,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-20 12:01:05,366 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:05,366 INFO L504 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] [2021-01-20 12:01:05,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-01-20 12:01:05,567 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:05,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:05,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1410682108, now seen corresponding path program 42 times [2021-01-20 12:01:05,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:05,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010528625] [2021-01-20 12:01:05,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:05,731 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:05,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010528625] [2021-01-20 12:01:05,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418874208] [2021-01-20 12:01:05,732 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 [2021-01-20 12:01:05,804 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-01-20 12:01:05,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:05,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-20 12:01:05,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:05,855 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:05,861 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:05,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:05,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-01-20 12:01:05,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141940180] [2021-01-20 12:01:05,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-20 12:01:05,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:05,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-20 12:01:05,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-01-20 12:01:05,863 INFO L87 Difference]: Start difference. First operand 6477 states. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:01:06,103 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2021-01-20 12:01:06,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:06,687 INFO L93 Difference]: Finished difference Result 6029 states and 14041 transitions. [2021-01-20 12:01:06,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-20 12:01:06,687 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:01:06,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:06,693 INFO L225 Difference]: With dead ends: 6029 [2021-01-20 12:01:06,693 INFO L226 Difference]: Without dead ends: 5460 [2021-01-20 12:01:06,694 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=347, Invalid=985, Unknown=0, NotChecked=0, Total=1332 [2021-01-20 12:01:06,694 INFO L78 Accepts]: Start accepts. Automaton has 5460 states. Word has length 71 [2021-01-20 12:01:06,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:06,694 INFO L481 AbstractCegarLoop]: Abstraction has 5460 states. [2021-01-20 12:01:06,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:01:06,694 INFO L276 IsEmpty]: Start isEmpty. Operand 5460 states. [2021-01-20 12:01:06,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-20 12:01:06,700 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:06,700 INFO L504 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] [2021-01-20 12:01:06,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:01:06,901 INFO L429 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:06,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:06,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1682215820, now seen corresponding path program 43 times [2021-01-20 12:01:06,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:06,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910063192] [2021-01-20 12:01:06,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:07,146 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:07,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910063192] [2021-01-20 12:01:07,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920404355] [2021-01-20 12:01:07,147 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 [2021-01-20 12:01:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:07,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-20 12:01:07,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:07,318 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:07,350 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:07,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:07,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-01-20 12:01:07,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037306089] [2021-01-20 12:01:07,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-20 12:01:07,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:07,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-20 12:01:07,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-01-20 12:01:07,354 INFO L87 Difference]: Start difference. First operand 5460 states. 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) [2021-01-20 12:01:07,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:07,891 INFO L93 Difference]: Finished difference Result 5780 states and 13390 transitions. [2021-01-20 12:01:07,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-20 12:01:07,892 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 [2021-01-20 12:01:07,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:07,902 INFO L225 Difference]: With dead ends: 5780 [2021-01-20 12:01:07,903 INFO L226 Difference]: Without dead ends: 5510 [2021-01-20 12:01:07,903 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2021-01-20 12:01:07,903 INFO L78 Accepts]: Start accepts. Automaton has 5510 states. Word has length 76 [2021-01-20 12:01:07,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:07,904 INFO L481 AbstractCegarLoop]: Abstraction has 5510 states. [2021-01-20 12:01:07,904 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) [2021-01-20 12:01:07,905 INFO L276 IsEmpty]: Start isEmpty. Operand 5510 states. [2021-01-20 12:01:07,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-20 12:01:07,916 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:07,917 INFO L504 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] [2021-01-20 12:01:08,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-01-20 12:01:08,126 INFO L429 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:08,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:08,127 INFO L82 PathProgramCache]: Analyzing trace with hash 247870558, now seen corresponding path program 44 times [2021-01-20 12:01:08,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:08,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201594986] [2021-01-20 12:01:08,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:08,382 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:08,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201594986] [2021-01-20 12:01:08,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042645652] [2021-01-20 12:01:08,384 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 [2021-01-20 12:01:08,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:01:08,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:08,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-20 12:01:08,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:08,478 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:01:08,523 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:08,535 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:08,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:08,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-01-20 12:01:08,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166210571] [2021-01-20 12:01:08,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-20 12:01:08,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:08,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-20 12:01:08,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-01-20 12:01:08,537 INFO L87 Difference]: Start difference. First operand 5510 states. 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) [2021-01-20 12:01:09,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:09,012 INFO L93 Difference]: Finished difference Result 5830 states and 13490 transitions. [2021-01-20 12:01:09,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-20 12:01:09,012 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 [2021-01-20 12:01:09,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:09,019 INFO L225 Difference]: With dead ends: 5830 [2021-01-20 12:01:09,019 INFO L226 Difference]: Without dead ends: 5560 [2021-01-20 12:01:09,019 INFO L769 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 [2021-01-20 12:01:09,019 INFO L78 Accepts]: Start accepts. Automaton has 5560 states. Word has length 76 [2021-01-20 12:01:09,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:09,020 INFO L481 AbstractCegarLoop]: Abstraction has 5560 states. [2021-01-20 12:01:09,020 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) [2021-01-20 12:01:09,020 INFO L276 IsEmpty]: Start isEmpty. Operand 5560 states. [2021-01-20 12:01:09,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-20 12:01:09,024 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:09,024 INFO L504 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] [2021-01-20 12:01:09,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-01-20 12:01:09,225 INFO L429 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:09,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:09,226 INFO L82 PathProgramCache]: Analyzing trace with hash 2074066552, now seen corresponding path program 45 times [2021-01-20 12:01:09,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:09,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956768156] [2021-01-20 12:01:09,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:09,418 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:09,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956768156] [2021-01-20 12:01:09,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779990500] [2021-01-20 12:01:09,419 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 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 [2021-01-20 12:01:09,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-01-20 12:01:09,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:09,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-20 12:01:09,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:09,534 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:09,546 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:09,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:09,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-01-20 12:01:09,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610492859] [2021-01-20 12:01:09,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-20 12:01:09,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:09,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-20 12:01:09,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-01-20 12:01:09,548 INFO L87 Difference]: Start difference. First operand 5560 states. 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) [2021-01-20 12:01:09,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:09,939 INFO L93 Difference]: Finished difference Result 5880 states and 13590 transitions. [2021-01-20 12:01:09,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-20 12:01:09,939 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 [2021-01-20 12:01:09,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:09,946 INFO L225 Difference]: With dead ends: 5880 [2021-01-20 12:01:09,946 INFO L226 Difference]: Without dead ends: 5610 [2021-01-20 12:01:09,946 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=229, Invalid=701, Unknown=0, NotChecked=0, Total=930 [2021-01-20 12:01:09,946 INFO L78 Accepts]: Start accepts. Automaton has 5610 states. Word has length 76 [2021-01-20 12:01:09,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:09,947 INFO L481 AbstractCegarLoop]: Abstraction has 5610 states. [2021-01-20 12:01:09,947 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) [2021-01-20 12:01:09,947 INFO L276 IsEmpty]: Start isEmpty. Operand 5610 states. [2021-01-20 12:01:09,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-20 12:01:09,951 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:09,951 INFO L504 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] [2021-01-20 12:01:10,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:01:10,152 INFO L429 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:10,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:10,153 INFO L82 PathProgramCache]: Analyzing trace with hash -59228856, now seen corresponding path program 46 times [2021-01-20 12:01:10,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:10,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153939348] [2021-01-20 12:01:10,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:10,453 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:10,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153939348] [2021-01-20 12:01:10,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345897248] [2021-01-20 12:01:10,454 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 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 [2021-01-20 12:01:10,525 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:01:10,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:10,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-20 12:01:10,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:10,551 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:01:10,591 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:10,601 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:10,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:10,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-01-20 12:01:10,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856179056] [2021-01-20 12:01:10,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-20 12:01:10,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:10,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-20 12:01:10,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-01-20 12:01:10,603 INFO L87 Difference]: Start difference. First operand 5610 states. 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) [2021-01-20 12:01:11,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:11,177 INFO L93 Difference]: Finished difference Result 5930 states and 13690 transitions. [2021-01-20 12:01:11,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-20 12:01:11,178 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 [2021-01-20 12:01:11,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:11,184 INFO L225 Difference]: With dead ends: 5930 [2021-01-20 12:01:11,184 INFO L226 Difference]: Without dead ends: 5660 [2021-01-20 12:01:11,185 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=286, Invalid=904, Unknown=0, NotChecked=0, Total=1190 [2021-01-20 12:01:11,185 INFO L78 Accepts]: Start accepts. Automaton has 5660 states. Word has length 76 [2021-01-20 12:01:11,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:11,185 INFO L481 AbstractCegarLoop]: Abstraction has 5660 states. [2021-01-20 12:01:11,185 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) [2021-01-20 12:01:11,185 INFO L276 IsEmpty]: Start isEmpty. Operand 5660 states. [2021-01-20 12:01:11,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-20 12:01:11,189 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:11,189 INFO L504 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] [2021-01-20 12:01:11,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-01-20 12:01:11,390 INFO L429 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:11,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:11,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1831372022, now seen corresponding path program 47 times [2021-01-20 12:01:11,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:11,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781590122] [2021-01-20 12:01:11,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:11,569 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:11,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781590122] [2021-01-20 12:01:11,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045468758] [2021-01-20 12:01:11,569 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 [2021-01-20 12:01:11,638 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-01-20 12:01:11,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:11,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-20 12:01:11,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:11,677 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:11,687 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:11,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:11,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-01-20 12:01:11,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576764862] [2021-01-20 12:01:11,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-20 12:01:11,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:11,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-20 12:01:11,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-01-20 12:01:11,688 INFO L87 Difference]: Start difference. First operand 5660 states. 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) [2021-01-20 12:01:12,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:12,172 INFO L93 Difference]: Finished difference Result 5980 states and 13790 transitions. [2021-01-20 12:01:12,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-20 12:01:12,173 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 [2021-01-20 12:01:12,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:12,179 INFO L225 Difference]: With dead ends: 5980 [2021-01-20 12:01:12,179 INFO L226 Difference]: Without dead ends: 5710 [2021-01-20 12:01:12,179 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2021-01-20 12:01:12,179 INFO L78 Accepts]: Start accepts. Automaton has 5710 states. Word has length 76 [2021-01-20 12:01:12,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:12,180 INFO L481 AbstractCegarLoop]: Abstraction has 5710 states. [2021-01-20 12:01:12,180 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) [2021-01-20 12:01:12,180 INFO L276 IsEmpty]: Start isEmpty. Operand 5710 states. [2021-01-20 12:01:12,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-20 12:01:12,183 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:12,184 INFO L504 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] [2021-01-20 12:01:12,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-01-20 12:01:12,384 INFO L429 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:12,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:12,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1241888826, now seen corresponding path program 48 times [2021-01-20 12:01:12,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:12,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812083431] [2021-01-20 12:01:12,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:12,583 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:12,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812083431] [2021-01-20 12:01:12,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235052385] [2021-01-20 12:01:12,583 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 [2021-01-20 12:01:12,658 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-01-20 12:01:12,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:12,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-20 12:01:12,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:12,721 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:12,728 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:12,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:12,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-01-20 12:01:12,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520213165] [2021-01-20 12:01:12,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-20 12:01:12,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:12,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-20 12:01:12,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-01-20 12:01:12,729 INFO L87 Difference]: Start difference. First operand 5710 states. 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) [2021-01-20 12:01:13,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:13,344 INFO L93 Difference]: Finished difference Result 6030 states and 13890 transitions. [2021-01-20 12:01:13,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-20 12:01:13,344 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 [2021-01-20 12:01:13,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:13,351 INFO L225 Difference]: With dead ends: 6030 [2021-01-20 12:01:13,351 INFO L226 Difference]: Without dead ends: 5760 [2021-01-20 12:01:13,351 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=273, Invalid=917, Unknown=0, NotChecked=0, Total=1190 [2021-01-20 12:01:13,351 INFO L78 Accepts]: Start accepts. Automaton has 5760 states. Word has length 76 [2021-01-20 12:01:13,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:13,352 INFO L481 AbstractCegarLoop]: Abstraction has 5760 states. [2021-01-20 12:01:13,352 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) [2021-01-20 12:01:13,352 INFO L276 IsEmpty]: Start isEmpty. Operand 5760 states. [2021-01-20 12:01:13,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-20 12:01:13,356 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:13,356 INFO L504 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] [2021-01-20 12:01:13,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-01-20 12:01:13,557 INFO L429 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:13,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:13,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1963045108, now seen corresponding path program 49 times [2021-01-20 12:01:13,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:13,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821694653] [2021-01-20 12:01:13,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:13,745 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:13,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821694653] [2021-01-20 12:01:13,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522235087] [2021-01-20 12:01:13,745 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 [2021-01-20 12:01:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:13,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-20 12:01:13,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:13,855 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:13,864 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:13,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:13,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-01-20 12:01:13,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9318429] [2021-01-20 12:01:13,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-20 12:01:13,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:13,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-20 12:01:13,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-01-20 12:01:13,866 INFO L87 Difference]: Start difference. First operand 5760 states. 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) [2021-01-20 12:01:14,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:14,508 INFO L93 Difference]: Finished difference Result 6080 states and 13990 transitions. [2021-01-20 12:01:14,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-20 12:01:14,509 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 [2021-01-20 12:01:14,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:14,515 INFO L225 Difference]: With dead ends: 6080 [2021-01-20 12:01:14,515 INFO L226 Difference]: Without dead ends: 5810 [2021-01-20 12:01:14,515 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=305, Invalid=885, Unknown=0, NotChecked=0, Total=1190 [2021-01-20 12:01:14,515 INFO L78 Accepts]: Start accepts. Automaton has 5810 states. Word has length 76 [2021-01-20 12:01:14,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:14,516 INFO L481 AbstractCegarLoop]: Abstraction has 5810 states. [2021-01-20 12:01:14,516 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) [2021-01-20 12:01:14,516 INFO L276 IsEmpty]: Start isEmpty. Operand 5810 states. [2021-01-20 12:01:14,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-20 12:01:14,519 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:14,519 INFO L504 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] [2021-01-20 12:01:14,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,55 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:01:14,720 INFO L429 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:14,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:14,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1412319292, now seen corresponding path program 50 times [2021-01-20 12:01:14,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:14,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354682479] [2021-01-20 12:01:14,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:14,900 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:14,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354682479] [2021-01-20 12:01:14,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549265298] [2021-01-20 12:01:14,901 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 [2021-01-20 12:01:14,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:01:14,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:14,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-20 12:01:14,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:15,003 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:01:15,037 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:15,044 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:15,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:15,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-01-20 12:01:15,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009129638] [2021-01-20 12:01:15,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-20 12:01:15,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:15,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-20 12:01:15,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-01-20 12:01:15,045 INFO L87 Difference]: Start difference. First operand 5810 states. 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) [2021-01-20 12:01:15,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:15,804 INFO L93 Difference]: Finished difference Result 6170 states and 14170 transitions. [2021-01-20 12:01:15,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-01-20 12:01:15,805 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 [2021-01-20 12:01:15,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:15,811 INFO L225 Difference]: With dead ends: 6170 [2021-01-20 12:01:15,811 INFO L226 Difference]: Without dead ends: 5900 [2021-01-20 12:01:15,812 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=378, Invalid=1104, Unknown=0, NotChecked=0, Total=1482 [2021-01-20 12:01:15,812 INFO L78 Accepts]: Start accepts. Automaton has 5900 states. Word has length 76 [2021-01-20 12:01:15,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:15,812 INFO L481 AbstractCegarLoop]: Abstraction has 5900 states. [2021-01-20 12:01:15,812 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) [2021-01-20 12:01:15,812 INFO L276 IsEmpty]: Start isEmpty. Operand 5900 states. [2021-01-20 12:01:15,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-20 12:01:15,816 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:15,817 INFO L504 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] [2021-01-20 12:01:16,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:01:16,017 INFO L429 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:16,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:16,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1060243374, now seen corresponding path program 51 times [2021-01-20 12:01:16,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:16,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128136267] [2021-01-20 12:01:16,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:16,185 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:16,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128136267] [2021-01-20 12:01:16,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7246607] [2021-01-20 12:01:16,186 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 [2021-01-20 12:01:16,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-01-20 12:01:16,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:16,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-20 12:01:16,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:16,309 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:16,315 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:16,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:16,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-01-20 12:01:16,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272652678] [2021-01-20 12:01:16,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-20 12:01:16,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:16,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-20 12:01:16,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-01-20 12:01:16,317 INFO L87 Difference]: Start difference. First operand 5900 states. 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) [2021-01-20 12:01:16,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:16,918 INFO L93 Difference]: Finished difference Result 7372 states and 17534 transitions. [2021-01-20 12:01:16,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-20 12:01:16,918 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 [2021-01-20 12:01:16,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:16,926 INFO L225 Difference]: With dead ends: 7372 [2021-01-20 12:01:16,926 INFO L226 Difference]: Without dead ends: 7102 [2021-01-20 12:01:16,926 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=368, Invalid=964, Unknown=0, NotChecked=0, Total=1332 [2021-01-20 12:01:16,927 INFO L78 Accepts]: Start accepts. Automaton has 7102 states. Word has length 76 [2021-01-20 12:01:16,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:16,927 INFO L481 AbstractCegarLoop]: Abstraction has 7102 states. [2021-01-20 12:01:16,927 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) [2021-01-20 12:01:16,927 INFO L276 IsEmpty]: Start isEmpty. Operand 7102 states. [2021-01-20 12:01:16,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-20 12:01:16,931 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:16,932 INFO L504 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] [2021-01-20 12:01:17,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:01:17,132 INFO L429 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:17,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:17,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1063216604, now seen corresponding path program 52 times [2021-01-20 12:01:17,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:17,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484210727] [2021-01-20 12:01:17,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:17,314 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:17,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484210727] [2021-01-20 12:01:17,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719117520] [2021-01-20 12:01:17,314 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 [2021-01-20 12:01:17,384 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:01:17,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:17,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-20 12:01:17,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:17,409 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:01:17,436 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:17,443 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:17,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:17,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-01-20 12:01:17,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518283926] [2021-01-20 12:01:17,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-20 12:01:17,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:17,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-20 12:01:17,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-01-20 12:01:17,444 INFO L87 Difference]: Start difference. First operand 7102 states. Second operand has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 17 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) [2021-01-20 12:01:18,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:18,376 INFO L93 Difference]: Finished difference Result 7110 states and 16496 transitions. [2021-01-20 12:01:18,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-20 12:01:18,376 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 17 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 76 [2021-01-20 12:01:18,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:18,383 INFO L225 Difference]: With dead ends: 7110 [2021-01-20 12:01:18,383 INFO L226 Difference]: Without dead ends: 6455 [2021-01-20 12:01:18,383 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=484, Invalid=1408, Unknown=0, NotChecked=0, Total=1892 [2021-01-20 12:01:18,384 INFO L78 Accepts]: Start accepts. Automaton has 6455 states. Word has length 76 [2021-01-20 12:01:18,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:18,384 INFO L481 AbstractCegarLoop]: Abstraction has 6455 states. [2021-01-20 12:01:18,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 17 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) [2021-01-20 12:01:18,384 INFO L276 IsEmpty]: Start isEmpty. Operand 6455 states. [2021-01-20 12:01:18,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-01-20 12:01:18,389 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:18,389 INFO L504 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] [2021-01-20 12:01:18,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:01:18,596 INFO L429 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:18,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:18,596 INFO L82 PathProgramCache]: Analyzing trace with hash -298810531, now seen corresponding path program 53 times [2021-01-20 12:01:18,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:18,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832676722] [2021-01-20 12:01:18,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:18,820 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:18,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832676722] [2021-01-20 12:01:18,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430233442] [2021-01-20 12:01:18,821 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 [2021-01-20 12:01:19,032 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-01-20 12:01:19,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:19,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-20 12:01:19,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:19,069 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:19,082 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:19,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:19,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-01-20 12:01:19,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327412782] [2021-01-20 12:01:19,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-20 12:01:19,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:19,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-20 12:01:19,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-01-20 12:01:19,085 INFO L87 Difference]: Start difference. First operand 6455 states. 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) [2021-01-20 12:01:19,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:19,435 INFO L93 Difference]: Finished difference Result 6775 states and 15590 transitions. [2021-01-20 12:01:19,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-20 12:01:19,436 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 [2021-01-20 12:01:19,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:19,443 INFO L225 Difference]: With dead ends: 6775 [2021-01-20 12:01:19,443 INFO L226 Difference]: Without dead ends: 6505 [2021-01-20 12:01:19,444 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=247, Invalid=623, Unknown=0, NotChecked=0, Total=870 [2021-01-20 12:01:19,444 INFO L78 Accepts]: Start accepts. Automaton has 6505 states. Word has length 81 [2021-01-20 12:01:19,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:19,444 INFO L481 AbstractCegarLoop]: Abstraction has 6505 states. [2021-01-20 12:01:19,444 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) [2021-01-20 12:01:19,444 INFO L276 IsEmpty]: Start isEmpty. Operand 6505 states. [2021-01-20 12:01:19,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-01-20 12:01:19,452 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:19,452 INFO L504 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] [2021-01-20 12:01:19,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-01-20 12:01:19,667 INFO L429 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:19,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:19,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1053083055, now seen corresponding path program 54 times [2021-01-20 12:01:19,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:19,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658280905] [2021-01-20 12:01:19,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:19,918 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:19,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658280905] [2021-01-20 12:01:19,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981213595] [2021-01-20 12:01:19,920 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 [2021-01-20 12:01:20,003 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-01-20 12:01:20,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:20,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-20 12:01:20,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:20,027 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:01:20,067 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:20,077 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:20,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:20,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-01-20 12:01:20,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189618170] [2021-01-20 12:01:20,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-20 12:01:20,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:20,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-20 12:01:20,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-01-20 12:01:20,079 INFO L87 Difference]: Start difference. First operand 6505 states. 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) [2021-01-20 12:01:20,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:20,526 INFO L93 Difference]: Finished difference Result 6825 states and 15690 transitions. [2021-01-20 12:01:20,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-20 12:01:20,528 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 [2021-01-20 12:01:20,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:20,536 INFO L225 Difference]: With dead ends: 6825 [2021-01-20 12:01:20,536 INFO L226 Difference]: Without dead ends: 6555 [2021-01-20 12:01:20,536 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=268, Invalid=788, Unknown=0, NotChecked=0, Total=1056 [2021-01-20 12:01:20,536 INFO L78 Accepts]: Start accepts. Automaton has 6555 states. Word has length 81 [2021-01-20 12:01:20,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:20,537 INFO L481 AbstractCegarLoop]: Abstraction has 6555 states. [2021-01-20 12:01:20,537 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) [2021-01-20 12:01:20,537 INFO L276 IsEmpty]: Start isEmpty. Operand 6555 states. [2021-01-20 12:01:20,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-01-20 12:01:20,543 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:20,543 INFO L504 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] [2021-01-20 12:01:20,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:01:20,744 INFO L429 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:20,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:20,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1745619127, now seen corresponding path program 55 times [2021-01-20 12:01:20,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:20,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781900329] [2021-01-20 12:01:20,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:20,958 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:20,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781900329] [2021-01-20 12:01:20,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415943656] [2021-01-20 12:01:20,959 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 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 [2021-01-20 12:01:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:21,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-20 12:01:21,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:21,079 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:21,092 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:21,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:21,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-01-20 12:01:21,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042595615] [2021-01-20 12:01:21,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-20 12:01:21,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:21,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-20 12:01:21,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-01-20 12:01:21,093 INFO L87 Difference]: Start difference. First operand 6555 states. 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) [2021-01-20 12:01:21,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:21,513 INFO L93 Difference]: Finished difference Result 6875 states and 15790 transitions. [2021-01-20 12:01:21,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-20 12:01:21,513 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 [2021-01-20 12:01:21,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:21,520 INFO L225 Difference]: With dead ends: 6875 [2021-01-20 12:01:21,520 INFO L226 Difference]: Without dead ends: 6605 [2021-01-20 12:01:21,521 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=262, Invalid=794, Unknown=0, NotChecked=0, Total=1056 [2021-01-20 12:01:21,521 INFO L78 Accepts]: Start accepts. Automaton has 6605 states. Word has length 81 [2021-01-20 12:01:21,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:21,521 INFO L481 AbstractCegarLoop]: Abstraction has 6605 states. [2021-01-20 12:01:21,521 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) [2021-01-20 12:01:21,521 INFO L276 IsEmpty]: Start isEmpty. Operand 6605 states. [2021-01-20 12:01:21,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-01-20 12:01:21,526 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:21,526 INFO L504 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] [2021-01-20 12:01:21,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-01-20 12:01:21,727 INFO L429 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:21,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:21,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1956131353, now seen corresponding path program 56 times [2021-01-20 12:01:21,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:21,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795835856] [2021-01-20 12:01:21,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:21,978 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:21,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795835856] [2021-01-20 12:01:21,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817792033] [2021-01-20 12:01:21,979 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 [2021-01-20 12:01:22,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:01:22,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:22,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-20 12:01:22,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:22,073 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:01:22,112 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:22,122 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:22,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:22,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-01-20 12:01:22,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957336114] [2021-01-20 12:01:22,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-20 12:01:22,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:22,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-20 12:01:22,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2021-01-20 12:01:22,124 INFO L87 Difference]: Start difference. First operand 6605 states. 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) [2021-01-20 12:01:22,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:22,676 INFO L93 Difference]: Finished difference Result 6975 states and 15990 transitions. [2021-01-20 12:01:22,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-20 12:01:22,677 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 [2021-01-20 12:01:22,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:22,683 INFO L225 Difference]: With dead ends: 6975 [2021-01-20 12:01:22,683 INFO L226 Difference]: Without dead ends: 6705 [2021-01-20 12:01:22,684 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=305, Invalid=955, Unknown=0, NotChecked=0, Total=1260 [2021-01-20 12:01:22,684 INFO L78 Accepts]: Start accepts. Automaton has 6705 states. Word has length 81 [2021-01-20 12:01:22,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:22,684 INFO L481 AbstractCegarLoop]: Abstraction has 6705 states. [2021-01-20 12:01:22,684 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) [2021-01-20 12:01:22,684 INFO L276 IsEmpty]: Start isEmpty. Operand 6705 states. [2021-01-20 12:01:22,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-01-20 12:01:22,689 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:22,690 INFO L504 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] [2021-01-20 12:01:22,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:01:22,892 INFO L429 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:22,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:22,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1783445575, now seen corresponding path program 57 times [2021-01-20 12:01:22,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:22,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810894909] [2021-01-20 12:01:22,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:23,201 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2021-01-20 12:01:23,240 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:23,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810894909] [2021-01-20 12:01:23,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858896160] [2021-01-20 12:01:23,241 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 [2021-01-20 12:01:23,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-01-20 12:01:23,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:23,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-20 12:01:23,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:23,387 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:23,406 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:23,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:23,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-01-20 12:01:23,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555087926] [2021-01-20 12:01:23,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-20 12:01:23,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:23,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-20 12:01:23,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-01-20 12:01:23,408 INFO L87 Difference]: Start difference. First operand 6705 states. 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) [2021-01-20 12:01:23,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:23,961 INFO L93 Difference]: Finished difference Result 7025 states and 16090 transitions. [2021-01-20 12:01:23,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-20 12:01:23,962 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 [2021-01-20 12:01:23,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:23,969 INFO L225 Difference]: With dead ends: 7025 [2021-01-20 12:01:23,970 INFO L226 Difference]: Without dead ends: 6755 [2021-01-20 12:01:23,970 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2021-01-20 12:01:23,970 INFO L78 Accepts]: Start accepts. Automaton has 6755 states. Word has length 81 [2021-01-20 12:01:23,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:23,970 INFO L481 AbstractCegarLoop]: Abstraction has 6755 states. [2021-01-20 12:01:23,970 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) [2021-01-20 12:01:23,970 INFO L276 IsEmpty]: Start isEmpty. Operand 6755 states. [2021-01-20 12:01:23,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-01-20 12:01:23,977 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:23,977 INFO L504 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] [2021-01-20 12:01:24,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-01-20 12:01:24,178 INFO L429 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:24,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:24,179 INFO L82 PathProgramCache]: Analyzing trace with hash -349849833, now seen corresponding path program 58 times [2021-01-20 12:01:24,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:24,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208769896] [2021-01-20 12:01:24,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:24,420 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:24,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208769896] [2021-01-20 12:01:24,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155761020] [2021-01-20 12:01:24,420 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 [2021-01-20 12:01:24,498 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:01:24,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:24,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-20 12:01:24,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:24,526 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:01:24,565 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:24,584 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:24,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:24,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-01-20 12:01:24,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725900330] [2021-01-20 12:01:24,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-20 12:01:24,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:24,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-20 12:01:24,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-01-20 12:01:24,586 INFO L87 Difference]: Start difference. First operand 6755 states. 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) [2021-01-20 12:01:25,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:25,296 INFO L93 Difference]: Finished difference Result 7075 states and 16190 transitions. [2021-01-20 12:01:25,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-20 12:01:25,296 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 [2021-01-20 12:01:25,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:25,304 INFO L225 Difference]: With dead ends: 7075 [2021-01-20 12:01:25,304 INFO L226 Difference]: Without dead ends: 6805 [2021-01-20 12:01:25,304 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=334, Invalid=1072, Unknown=0, NotChecked=0, Total=1406 [2021-01-20 12:01:25,304 INFO L78 Accepts]: Start accepts. Automaton has 6805 states. Word has length 81 [2021-01-20 12:01:25,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:25,305 INFO L481 AbstractCegarLoop]: Abstraction has 6805 states. [2021-01-20 12:01:25,305 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) [2021-01-20 12:01:25,305 INFO L276 IsEmpty]: Start isEmpty. Operand 6805 states. [2021-01-20 12:01:25,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-01-20 12:01:25,309 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:25,310 INFO L504 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] [2021-01-20 12:01:25,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:01:25,510 INFO L429 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:25,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:25,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1540751045, now seen corresponding path program 59 times [2021-01-20 12:01:25,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:25,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904536615] [2021-01-20 12:01:25,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:25,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:25,705 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:25,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904536615] [2021-01-20 12:01:25,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878248947] [2021-01-20 12:01:25,706 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 [2021-01-20 12:01:25,777 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-01-20 12:01:25,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:25,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-20 12:01:25,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:25,819 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:25,830 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:25,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:25,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-01-20 12:01:25,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624393215] [2021-01-20 12:01:25,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-20 12:01:25,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:25,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-20 12:01:25,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-01-20 12:01:25,832 INFO L87 Difference]: Start difference. First operand 6805 states. 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) [2021-01-20 12:01:26,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:26,386 INFO L93 Difference]: Finished difference Result 7125 states and 16290 transitions. [2021-01-20 12:01:26,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-20 12:01:26,387 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 [2021-01-20 12:01:26,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:26,394 INFO L225 Difference]: With dead ends: 7125 [2021-01-20 12:01:26,394 INFO L226 Difference]: Without dead ends: 6855 [2021-01-20 12:01:26,395 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=354, Invalid=1052, Unknown=0, NotChecked=0, Total=1406 [2021-01-20 12:01:26,395 INFO L78 Accepts]: Start accepts. Automaton has 6855 states. Word has length 81 [2021-01-20 12:01:26,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:26,395 INFO L481 AbstractCegarLoop]: Abstraction has 6855 states. [2021-01-20 12:01:26,395 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) [2021-01-20 12:01:26,395 INFO L276 IsEmpty]: Start isEmpty. Operand 6855 states. [2021-01-20 12:01:26,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-01-20 12:01:26,400 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:26,400 INFO L504 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] [2021-01-20 12:01:26,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:01:26,601 INFO L429 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:26,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:26,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1532509803, now seen corresponding path program 60 times [2021-01-20 12:01:26,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:26,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247908170] [2021-01-20 12:01:26,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:26,829 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:26,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247908170] [2021-01-20 12:01:26,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625614750] [2021-01-20 12:01:26,830 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 [2021-01-20 12:01:26,912 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-01-20 12:01:26,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:26,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-20 12:01:26,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:26,975 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:26,986 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:26,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:26,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-01-20 12:01:26,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134712986] [2021-01-20 12:01:26,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-20 12:01:26,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:26,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-20 12:01:26,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-01-20 12:01:26,989 INFO L87 Difference]: Start difference. First operand 6855 states. 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) [2021-01-20 12:01:27,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:27,832 INFO L93 Difference]: Finished difference Result 7175 states and 16390 transitions. [2021-01-20 12:01:27,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-01-20 12:01:27,833 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 [2021-01-20 12:01:27,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:27,839 INFO L225 Difference]: With dead ends: 7175 [2021-01-20 12:01:27,839 INFO L226 Difference]: Without dead ends: 6905 [2021-01-20 12:01:27,839 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=367, Invalid=1193, Unknown=0, NotChecked=0, Total=1560 [2021-01-20 12:01:27,840 INFO L78 Accepts]: Start accepts. Automaton has 6905 states. Word has length 81 [2021-01-20 12:01:27,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:27,840 INFO L481 AbstractCegarLoop]: Abstraction has 6905 states. [2021-01-20 12:01:27,840 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) [2021-01-20 12:01:27,841 INFO L276 IsEmpty]: Start isEmpty. Operand 6905 states. [2021-01-20 12:01:27,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-01-20 12:01:27,847 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:27,847 INFO L504 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] [2021-01-20 12:01:28,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2021-01-20 12:01:28,058 INFO L429 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:28,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:28,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1672424131, now seen corresponding path program 61 times [2021-01-20 12:01:28,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:28,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18764807] [2021-01-20 12:01:28,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:28,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:28,254 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:28,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18764807] [2021-01-20 12:01:28,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589968774] [2021-01-20 12:01:28,254 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 [2021-01-20 12:01:28,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:28,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-20 12:01:28,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:28,369 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:28,377 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:28,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:28,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-01-20 12:01:28,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254802603] [2021-01-20 12:01:28,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-20 12:01:28,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:28,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-20 12:01:28,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-01-20 12:01:28,378 INFO L87 Difference]: Start difference. First operand 6905 states. 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) [2021-01-20 12:01:29,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:29,021 INFO L93 Difference]: Finished difference Result 7225 states and 16490 transitions. [2021-01-20 12:01:29,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-20 12:01:29,022 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 [2021-01-20 12:01:29,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:29,030 INFO L225 Difference]: With dead ends: 7225 [2021-01-20 12:01:29,030 INFO L226 Difference]: Without dead ends: 6955 [2021-01-20 12:01:29,030 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=413, Invalid=1147, Unknown=0, NotChecked=0, Total=1560 [2021-01-20 12:01:29,031 INFO L78 Accepts]: Start accepts. Automaton has 6955 states. Word has length 81 [2021-01-20 12:01:29,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:29,031 INFO L481 AbstractCegarLoop]: Abstraction has 6955 states. [2021-01-20 12:01:29,031 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) [2021-01-20 12:01:29,031 INFO L276 IsEmpty]: Start isEmpty. Operand 6955 states. [2021-01-20 12:01:29,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-01-20 12:01:29,036 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:29,036 INFO L504 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] [2021-01-20 12:01:29,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:01:29,237 INFO L429 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:29,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:29,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1702940269, now seen corresponding path program 62 times [2021-01-20 12:01:29,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:29,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450034642] [2021-01-20 12:01:29,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:29,452 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:29,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450034642] [2021-01-20 12:01:29,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676003729] [2021-01-20 12:01:29,453 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 [2021-01-20 12:01:29,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:01:29,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:29,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-20 12:01:29,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:29,549 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:01:29,582 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:29,593 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:29,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:29,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-01-20 12:01:29,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942977073] [2021-01-20 12:01:29,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-20 12:01:29,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:29,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-20 12:01:29,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-01-20 12:01:29,594 INFO L87 Difference]: Start difference. First operand 6955 states. 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) [2021-01-20 12:01:30,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:30,433 INFO L93 Difference]: Finished difference Result 7315 states and 16670 transitions. [2021-01-20 12:01:30,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-20 12:01:30,433 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 [2021-01-20 12:01:30,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:30,441 INFO L225 Difference]: With dead ends: 7315 [2021-01-20 12:01:30,441 INFO L226 Difference]: Without dead ends: 7015 [2021-01-20 12:01:30,442 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=440, Invalid=1282, Unknown=0, NotChecked=0, Total=1722 [2021-01-20 12:01:30,442 INFO L78 Accepts]: Start accepts. Automaton has 7015 states. Word has length 81 [2021-01-20 12:01:30,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:30,442 INFO L481 AbstractCegarLoop]: Abstraction has 7015 states. [2021-01-20 12:01:30,442 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) [2021-01-20 12:01:30,442 INFO L276 IsEmpty]: Start isEmpty. Operand 7015 states. [2021-01-20 12:01:30,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-01-20 12:01:30,447 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:30,448 INFO L504 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] [2021-01-20 12:01:30,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:01:30,648 INFO L429 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:30,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:30,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1350864351, now seen corresponding path program 63 times [2021-01-20 12:01:30,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:30,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096872719] [2021-01-20 12:01:30,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:30,841 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:30,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096872719] [2021-01-20 12:01:30,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975480052] [2021-01-20 12:01:30,842 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 [2021-01-20 12:01:30,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-01-20 12:01:30,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:30,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-20 12:01:30,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:30,953 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:30,962 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:30,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:30,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-01-20 12:01:30,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063836611] [2021-01-20 12:01:30,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-20 12:01:30,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:30,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-20 12:01:30,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-01-20 12:01:30,964 INFO L87 Difference]: Start difference. First operand 7015 states. 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) [2021-01-20 12:01:31,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:31,652 INFO L93 Difference]: Finished difference Result 8487 states and 19974 transitions. [2021-01-20 12:01:31,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-20 12:01:31,653 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 [2021-01-20 12:01:31,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:31,661 INFO L225 Difference]: With dead ends: 8487 [2021-01-20 12:01:31,662 INFO L226 Difference]: Without dead ends: 8202 [2021-01-20 12:01:31,662 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=489, Invalid=1233, Unknown=0, NotChecked=0, Total=1722 [2021-01-20 12:01:31,662 INFO L78 Accepts]: Start accepts. Automaton has 8202 states. Word has length 81 [2021-01-20 12:01:31,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:31,662 INFO L481 AbstractCegarLoop]: Abstraction has 8202 states. [2021-01-20 12:01:31,662 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) [2021-01-20 12:01:31,662 INFO L276 IsEmpty]: Start isEmpty. Operand 8202 states. [2021-01-20 12:01:31,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-01-20 12:01:31,668 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:31,668 INFO L504 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] [2021-01-20 12:01:31,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2021-01-20 12:01:31,869 INFO L429 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:31,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:31,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1353837581, now seen corresponding path program 64 times [2021-01-20 12:01:31,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:31,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323004966] [2021-01-20 12:01:31,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:32,059 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:32,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323004966] [2021-01-20 12:01:32,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461741820] [2021-01-20 12:01:32,059 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 [2021-01-20 12:01:32,131 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:01:32,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:32,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-20 12:01:32,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:32,160 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:01:32,187 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:32,194 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:32,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:32,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-01-20 12:01:32,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465457075] [2021-01-20 12:01:32,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-20 12:01:32,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:32,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-20 12:01:32,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-01-20 12:01:32,195 INFO L87 Difference]: Start difference. First operand 8202 states. Second operand has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:01:33,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:33,311 INFO L93 Difference]: Finished difference Result 8135 states and 18711 transitions. [2021-01-20 12:01:33,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-20 12:01:33,311 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:01:33,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:33,318 INFO L225 Difference]: With dead ends: 8135 [2021-01-20 12:01:33,318 INFO L226 Difference]: Without dead ends: 7450 [2021-01-20 12:01:33,319 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=554, Invalid=1608, Unknown=0, NotChecked=0, Total=2162 [2021-01-20 12:01:33,319 INFO L78 Accepts]: Start accepts. Automaton has 7450 states. Word has length 81 [2021-01-20 12:01:33,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:33,319 INFO L481 AbstractCegarLoop]: Abstraction has 7450 states. [2021-01-20 12:01:33,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:01:33,319 INFO L276 IsEmpty]: Start isEmpty. Operand 7450 states. [2021-01-20 12:01:33,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-01-20 12:01:33,325 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:33,325 INFO L504 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] [2021-01-20 12:01:33,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:01:33,526 INFO L429 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:33,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:33,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1585971837, now seen corresponding path program 65 times [2021-01-20 12:01:33,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:33,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024602003] [2021-01-20 12:01:33,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:33,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:33,785 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:33,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024602003] [2021-01-20 12:01:33,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320498387] [2021-01-20 12:01:33,786 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 [2021-01-20 12:01:33,860 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-01-20 12:01:33,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:33,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-20 12:01:33,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:33,903 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:33,925 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:33,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:33,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-01-20 12:01:33,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077077385] [2021-01-20 12:01:33,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-20 12:01:33,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:33,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-20 12:01:33,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-01-20 12:01:33,927 INFO L87 Difference]: Start difference. First operand 7450 states. 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) [2021-01-20 12:01:34,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:34,363 INFO L93 Difference]: Finished difference Result 7770 states and 17730 transitions. [2021-01-20 12:01:34,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-20 12:01:34,364 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 [2021-01-20 12:01:34,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:34,374 INFO L225 Difference]: With dead ends: 7770 [2021-01-20 12:01:34,374 INFO L226 Difference]: Without dead ends: 7500 [2021-01-20 12:01:34,374 INFO L769 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 [2021-01-20 12:01:34,375 INFO L78 Accepts]: Start accepts. Automaton has 7500 states. Word has length 86 [2021-01-20 12:01:34,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:34,375 INFO L481 AbstractCegarLoop]: Abstraction has 7500 states. [2021-01-20 12:01:34,375 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) [2021-01-20 12:01:34,375 INFO L276 IsEmpty]: Start isEmpty. Operand 7500 states. [2021-01-20 12:01:34,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-01-20 12:01:34,384 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:34,384 INFO L504 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] [2021-01-20 12:01:34,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-01-20 12:01:34,600 INFO L429 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:34,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:34,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1357101873, now seen corresponding path program 66 times [2021-01-20 12:01:34,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:34,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041616438] [2021-01-20 12:01:34,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:34,862 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:34,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041616438] [2021-01-20 12:01:34,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751329438] [2021-01-20 12:01:34,862 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 [2021-01-20 12:01:34,944 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-01-20 12:01:34,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:34,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-20 12:01:34,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:34,973 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:01:35,018 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:35,030 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:35,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:35,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-01-20 12:01:35,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35521653] [2021-01-20 12:01:35,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-20 12:01:35,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:35,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-20 12:01:35,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-01-20 12:01:35,031 INFO L87 Difference]: Start difference. First operand 7500 states. 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) [2021-01-20 12:01:35,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:35,608 INFO L93 Difference]: Finished difference Result 7820 states and 17830 transitions. [2021-01-20 12:01:35,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-20 12:01:35,608 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 [2021-01-20 12:01:35,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:35,616 INFO L225 Difference]: With dead ends: 7820 [2021-01-20 12:01:35,616 INFO L226 Difference]: Without dead ends: 7550 [2021-01-20 12:01:35,617 INFO L769 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 [2021-01-20 12:01:35,617 INFO L78 Accepts]: Start accepts. Automaton has 7550 states. Word has length 86 [2021-01-20 12:01:35,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:35,617 INFO L481 AbstractCegarLoop]: Abstraction has 7550 states. [2021-01-20 12:01:35,617 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) [2021-01-20 12:01:35,617 INFO L276 IsEmpty]: Start isEmpty. Operand 7550 states. [2021-01-20 12:01:35,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-01-20 12:01:35,624 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:35,624 INFO L504 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] [2021-01-20 12:01:35,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-01-20 12:01:35,825 INFO L429 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:35,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:35,825 INFO L82 PathProgramCache]: Analyzing trace with hash 139163241, now seen corresponding path program 67 times [2021-01-20 12:01:35,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:35,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848579473] [2021-01-20 12:01:35,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:36,070 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:36,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848579473] [2021-01-20 12:01:36,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721522607] [2021-01-20 12:01:36,070 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 [2021-01-20 12:01:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:36,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-20 12:01:36,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:36,183 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:36,201 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:36,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:36,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-01-20 12:01:36,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201676688] [2021-01-20 12:01:36,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-20 12:01:36,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:36,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-20 12:01:36,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-01-20 12:01:36,203 INFO L87 Difference]: Start difference. First operand 7550 states. 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) [2021-01-20 12:01:36,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:36,684 INFO L93 Difference]: Finished difference Result 7870 states and 17930 transitions. [2021-01-20 12:01:36,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-20 12:01:36,684 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 [2021-01-20 12:01:36,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:36,692 INFO L225 Difference]: With dead ends: 7870 [2021-01-20 12:01:36,692 INFO L226 Difference]: Without dead ends: 7600 [2021-01-20 12:01:36,693 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=294, Invalid=896, Unknown=0, NotChecked=0, Total=1190 [2021-01-20 12:01:36,693 INFO L78 Accepts]: Start accepts. Automaton has 7600 states. Word has length 86 [2021-01-20 12:01:36,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:36,693 INFO L481 AbstractCegarLoop]: Abstraction has 7600 states. [2021-01-20 12:01:36,693 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) [2021-01-20 12:01:36,693 INFO L276 IsEmpty]: Start isEmpty. Operand 7600 states. [2021-01-20 12:01:36,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-01-20 12:01:36,699 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:36,699 INFO L504 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] [2021-01-20 12:01:36,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-01-20 12:01:36,900 INFO L429 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:36,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:36,901 INFO L82 PathProgramCache]: Analyzing trace with hash -454053575, now seen corresponding path program 68 times [2021-01-20 12:01:36,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:36,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709476985] [2021-01-20 12:01:36,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:37,134 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:37,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709476985] [2021-01-20 12:01:37,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125683689] [2021-01-20 12:01:37,135 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 [2021-01-20 12:01:37,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:01:37,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:37,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-20 12:01:37,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:37,233 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:01:37,272 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:37,286 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:37,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:37,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-01-20 12:01:37,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450810498] [2021-01-20 12:01:37,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-20 12:01:37,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:37,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-20 12:01:37,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-01-20 12:01:37,288 INFO L87 Difference]: Start difference. First operand 7600 states. 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) [2021-01-20 12:01:37,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:37,952 INFO L93 Difference]: Finished difference Result 7920 states and 18030 transitions. [2021-01-20 12:01:37,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-20 12:01:37,952 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 [2021-01-20 12:01:37,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:37,961 INFO L225 Difference]: With dead ends: 7920 [2021-01-20 12:01:37,961 INFO L226 Difference]: Without dead ends: 7650 [2021-01-20 12:01:37,961 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=355, Invalid=1127, Unknown=0, NotChecked=0, Total=1482 [2021-01-20 12:01:37,961 INFO L78 Accepts]: Start accepts. Automaton has 7650 states. Word has length 86 [2021-01-20 12:01:37,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:37,961 INFO L481 AbstractCegarLoop]: Abstraction has 7650 states. [2021-01-20 12:01:37,961 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) [2021-01-20 12:01:37,962 INFO L276 IsEmpty]: Start isEmpty. Operand 7650 states. [2021-01-20 12:01:37,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-01-20 12:01:37,967 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:37,968 INFO L504 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] [2021-01-20 12:01:38,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:01:38,168 INFO L429 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:38,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:38,169 INFO L82 PathProgramCache]: Analyzing trace with hash -626739353, now seen corresponding path program 69 times [2021-01-20 12:01:38,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:38,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436552847] [2021-01-20 12:01:38,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:38,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:38,376 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 3 [2021-01-20 12:01:38,545 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:38,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436552847] [2021-01-20 12:01:38,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028304211] [2021-01-20 12:01:38,546 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 [2021-01-20 12:01:38,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-01-20 12:01:38,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:38,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-20 12:01:38,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:38,667 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:38,680 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:38,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:38,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-01-20 12:01:38,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569757107] [2021-01-20 12:01:38,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-20 12:01:38,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:38,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-20 12:01:38,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-01-20 12:01:38,682 INFO L87 Difference]: Start difference. First operand 7650 states. 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) [2021-01-20 12:01:39,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:39,232 INFO L93 Difference]: Finished difference Result 7970 states and 18130 transitions. [2021-01-20 12:01:39,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-20 12:01:39,233 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 [2021-01-20 12:01:39,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:39,242 INFO L225 Difference]: With dead ends: 7970 [2021-01-20 12:01:39,242 INFO L226 Difference]: Without dead ends: 7700 [2021-01-20 12:01:39,243 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=322, Invalid=1010, Unknown=0, NotChecked=0, Total=1332 [2021-01-20 12:01:39,243 INFO L78 Accepts]: Start accepts. Automaton has 7700 states. Word has length 86 [2021-01-20 12:01:39,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:39,243 INFO L481 AbstractCegarLoop]: Abstraction has 7700 states. [2021-01-20 12:01:39,243 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) [2021-01-20 12:01:39,243 INFO L276 IsEmpty]: Start isEmpty. Operand 7700 states. [2021-01-20 12:01:39,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-01-20 12:01:39,252 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:39,252 INFO L504 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] [2021-01-20 12:01:39,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,75 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:01:39,468 INFO L429 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:39,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:39,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1534932535, now seen corresponding path program 70 times [2021-01-20 12:01:39,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:39,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227649937] [2021-01-20 12:01:39,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:39,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:39,699 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:39,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227649937] [2021-01-20 12:01:39,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297377130] [2021-01-20 12:01:39,700 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 [2021-01-20 12:01:39,767 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:01:39,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:39,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-20 12:01:39,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:39,795 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:01:39,836 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:39,846 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:39,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:39,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-01-20 12:01:39,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767007747] [2021-01-20 12:01:39,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-20 12:01:39,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:39,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-20 12:01:39,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-01-20 12:01:39,847 INFO L87 Difference]: Start difference. First operand 7700 states. 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) [2021-01-20 12:01:40,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:40,624 INFO L93 Difference]: Finished difference Result 8020 states and 18230 transitions. [2021-01-20 12:01:40,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-01-20 12:01:40,625 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 [2021-01-20 12:01:40,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:40,633 INFO L225 Difference]: With dead ends: 8020 [2021-01-20 12:01:40,633 INFO L226 Difference]: Without dead ends: 7750 [2021-01-20 12:01:40,634 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=391, Invalid=1249, Unknown=0, NotChecked=0, Total=1640 [2021-01-20 12:01:40,634 INFO L78 Accepts]: Start accepts. Automaton has 7750 states. Word has length 86 [2021-01-20 12:01:40,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:40,634 INFO L481 AbstractCegarLoop]: Abstraction has 7750 states. [2021-01-20 12:01:40,634 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) [2021-01-20 12:01:40,634 INFO L276 IsEmpty]: Start isEmpty. Operand 7750 states. [2021-01-20 12:01:40,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-01-20 12:01:40,642 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:40,642 INFO L504 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] [2021-01-20 12:01:40,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:01:40,843 INFO L429 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:40,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:40,844 INFO L82 PathProgramCache]: Analyzing trace with hash -869433883, now seen corresponding path program 71 times [2021-01-20 12:01:40,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:40,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566405705] [2021-01-20 12:01:40,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:41,044 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:41,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566405705] [2021-01-20 12:01:41,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302340097] [2021-01-20 12:01:41,045 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 [2021-01-20 12:01:41,119 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-01-20 12:01:41,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:41,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-20 12:01:41,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:41,158 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:41,167 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:41,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:41,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-01-20 12:01:41,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625819864] [2021-01-20 12:01:41,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-20 12:01:41,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:41,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-20 12:01:41,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2021-01-20 12:01:41,168 INFO L87 Difference]: Start difference. First operand 7750 states. 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) [2021-01-20 12:01:41,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:41,830 INFO L93 Difference]: Finished difference Result 8070 states and 18330 transitions. [2021-01-20 12:01:41,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-20 12:01:41,830 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 [2021-01-20 12:01:41,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:41,838 INFO L225 Difference]: With dead ends: 8070 [2021-01-20 12:01:41,838 INFO L226 Difference]: Without dead ends: 7800 [2021-01-20 12:01:41,839 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=366, Invalid=1116, Unknown=0, NotChecked=0, Total=1482 [2021-01-20 12:01:41,839 INFO L78 Accepts]: Start accepts. Automaton has 7800 states. Word has length 86 [2021-01-20 12:01:41,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:41,839 INFO L481 AbstractCegarLoop]: Abstraction has 7800 states. [2021-01-20 12:01:41,839 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) [2021-01-20 12:01:41,839 INFO L276 IsEmpty]: Start isEmpty. Operand 7800 states. [2021-01-20 12:01:41,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-01-20 12:01:41,845 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:41,845 INFO L504 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] [2021-01-20 12:01:42,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:01:42,047 INFO L429 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:42,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:42,048 INFO L82 PathProgramCache]: Analyzing trace with hash 352272565, now seen corresponding path program 72 times [2021-01-20 12:01:42,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:42,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371343263] [2021-01-20 12:01:42,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:42,279 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:42,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371343263] [2021-01-20 12:01:42,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495594309] [2021-01-20 12:01:42,280 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 [2021-01-20 12:01:42,355 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-01-20 12:01:42,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:42,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-20 12:01:42,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:42,426 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:42,435 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:42,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:42,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-01-20 12:01:42,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821384783] [2021-01-20 12:01:42,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-20 12:01:42,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:42,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-20 12:01:42,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-01-20 12:01:42,436 INFO L87 Difference]: Start difference. First operand 7800 states. 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) [2021-01-20 12:01:43,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:43,255 INFO L93 Difference]: Finished difference Result 8120 states and 18430 transitions. [2021-01-20 12:01:43,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-01-20 12:01:43,255 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 [2021-01-20 12:01:43,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:43,263 INFO L225 Difference]: With dead ends: 8120 [2021-01-20 12:01:43,263 INFO L226 Difference]: Without dead ends: 7850 [2021-01-20 12:01:43,264 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2021-01-20 12:01:43,264 INFO L78 Accepts]: Start accepts. Automaton has 7850 states. Word has length 86 [2021-01-20 12:01:43,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:43,264 INFO L481 AbstractCegarLoop]: Abstraction has 7850 states. [2021-01-20 12:01:43,264 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) [2021-01-20 12:01:43,264 INFO L276 IsEmpty]: Start isEmpty. Operand 7850 states. [2021-01-20 12:01:43,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-01-20 12:01:43,271 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:43,271 INFO L504 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] [2021-01-20 12:01:43,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2021-01-20 12:01:43,472 INFO L429 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:43,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:43,473 INFO L82 PathProgramCache]: Analyzing trace with hash -737760797, now seen corresponding path program 73 times [2021-01-20 12:01:43,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:43,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651012548] [2021-01-20 12:01:43,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:43,852 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:43,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651012548] [2021-01-20 12:01:43,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538787799] [2021-01-20 12:01:43,852 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 [2021-01-20 12:01:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:43,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-20 12:01:43,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:43,983 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:43,999 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:44,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:44,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-01-20 12:01:44,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682081076] [2021-01-20 12:01:44,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-20 12:01:44,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:44,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-20 12:01:44,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-01-20 12:01:44,001 INFO L87 Difference]: Start difference. First operand 7850 states. 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) [2021-01-20 12:01:44,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:44,754 INFO L93 Difference]: Finished difference Result 8170 states and 18530 transitions. [2021-01-20 12:01:44,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-20 12:01:44,755 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 [2021-01-20 12:01:44,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:44,764 INFO L225 Difference]: With dead ends: 8170 [2021-01-20 12:01:44,764 INFO L226 Difference]: Without dead ends: 7900 [2021-01-20 12:01:44,764 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=426, Invalid=1214, Unknown=0, NotChecked=0, Total=1640 [2021-01-20 12:01:44,765 INFO L78 Accepts]: Start accepts. Automaton has 7900 states. Word has length 86 [2021-01-20 12:01:44,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:44,765 INFO L481 AbstractCegarLoop]: Abstraction has 7900 states. [2021-01-20 12:01:44,765 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) [2021-01-20 12:01:44,765 INFO L276 IsEmpty]: Start isEmpty. Operand 7900 states. [2021-01-20 12:01:44,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-01-20 12:01:44,779 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:44,779 INFO L504 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] [2021-01-20 12:01:44,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:01:44,990 INFO L429 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:44,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:44,991 INFO L82 PathProgramCache]: Analyzing trace with hash 181842099, now seen corresponding path program 74 times [2021-01-20 12:01:44,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:44,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674857159] [2021-01-20 12:01:44,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:45,239 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:45,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674857159] [2021-01-20 12:01:45,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168950500] [2021-01-20 12:01:45,239 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 [2021-01-20 12:01:45,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:01:45,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:45,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-20 12:01:45,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:45,351 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:01:45,391 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:45,404 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:45,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:45,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-01-20 12:01:45,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989510408] [2021-01-20 12:01:45,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-20 12:01:45,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:45,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-20 12:01:45,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-01-20 12:01:45,406 INFO L87 Difference]: Start difference. First operand 7900 states. 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) [2021-01-20 12:01:46,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:46,498 INFO L93 Difference]: Finished difference Result 8604 states and 19654 transitions. [2021-01-20 12:01:46,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-01-20 12:01:46,498 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 [2021-01-20 12:01:46,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:46,507 INFO L225 Difference]: With dead ends: 8604 [2021-01-20 12:01:46,507 INFO L226 Difference]: Without dead ends: 8020 [2021-01-20 12:01:46,507 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=534, Invalid=1628, Unknown=0, NotChecked=0, Total=2162 [2021-01-20 12:01:46,507 INFO L78 Accepts]: Start accepts. Automaton has 8020 states. Word has length 86 [2021-01-20 12:01:46,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:46,508 INFO L481 AbstractCegarLoop]: Abstraction has 8020 states. [2021-01-20 12:01:46,508 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) [2021-01-20 12:01:46,508 INFO L276 IsEmpty]: Start isEmpty. Operand 8020 states. [2021-01-20 12:01:46,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-01-20 12:01:46,514 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:46,514 INFO L504 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] [2021-01-20 12:01:46,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:01:46,715 INFO L429 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:46,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:46,716 INFO L82 PathProgramCache]: Analyzing trace with hash 533918017, now seen corresponding path program 75 times [2021-01-20 12:01:46,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:46,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941458400] [2021-01-20 12:01:46,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:46,918 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:46,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941458400] [2021-01-20 12:01:46,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769290463] [2021-01-20 12:01:46,919 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 [2021-01-20 12:01:46,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-01-20 12:01:46,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:46,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-20 12:01:47,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:47,045 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:47,055 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:47,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:47,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-01-20 12:01:47,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125433925] [2021-01-20 12:01:47,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-20 12:01:47,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:47,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-20 12:01:47,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-01-20 12:01:47,057 INFO L87 Difference]: Start difference. First operand 8020 states. 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) [2021-01-20 12:01:47,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:47,834 INFO L93 Difference]: Finished difference Result 9492 states and 22184 transitions. [2021-01-20 12:01:47,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-20 12:01:47,834 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 [2021-01-20 12:01:47,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:47,844 INFO L225 Difference]: With dead ends: 9492 [2021-01-20 12:01:47,844 INFO L226 Difference]: Without dead ends: 9207 [2021-01-20 12:01:47,844 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=503, Invalid=1303, Unknown=0, NotChecked=0, Total=1806 [2021-01-20 12:01:47,844 INFO L78 Accepts]: Start accepts. Automaton has 9207 states. Word has length 86 [2021-01-20 12:01:47,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:47,845 INFO L481 AbstractCegarLoop]: Abstraction has 9207 states. [2021-01-20 12:01:47,845 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) [2021-01-20 12:01:47,845 INFO L276 IsEmpty]: Start isEmpty. Operand 9207 states. [2021-01-20 12:01:47,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-01-20 12:01:47,851 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:47,851 INFO L504 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] [2021-01-20 12:01:48,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:01:48,054 INFO L429 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:48,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:48,055 INFO L82 PathProgramCache]: Analyzing trace with hash 530944787, now seen corresponding path program 76 times [2021-01-20 12:01:48,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:48,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431684115] [2021-01-20 12:01:48,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:48,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:48,286 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:48,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431684115] [2021-01-20 12:01:48,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287927452] [2021-01-20 12:01:48,287 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 [2021-01-20 12:01:48,393 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:01:48,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:48,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-20 12:01:48,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:48,426 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:01:48,454 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:48,464 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:48,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:48,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-01-20 12:01:48,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945261528] [2021-01-20 12:01:48,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-20 12:01:48,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:48,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-20 12:01:48,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-01-20 12:01:48,466 INFO L87 Difference]: Start difference. First operand 9207 states. Second operand has 19 states, 19 states have (on average 4.684210526315789) internal successors, (89), 19 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) [2021-01-20 12:01:49,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:49,762 INFO L93 Difference]: Finished difference Result 9015 states and 20621 transitions. [2021-01-20 12:01:49,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-01-20 12:01:49,762 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.684210526315789) internal successors, (89), 19 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 86 [2021-01-20 12:01:49,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:49,770 INFO L225 Difference]: With dead ends: 9015 [2021-01-20 12:01:49,770 INFO L226 Difference]: Without dead ends: 8330 [2021-01-20 12:01:49,770 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=633, Invalid=1817, Unknown=0, NotChecked=0, Total=2450 [2021-01-20 12:01:49,770 INFO L78 Accepts]: Start accepts. Automaton has 8330 states. Word has length 86 [2021-01-20 12:01:49,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:49,771 INFO L481 AbstractCegarLoop]: Abstraction has 8330 states. [2021-01-20 12:01:49,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.684210526315789) internal successors, (89), 19 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) [2021-01-20 12:01:49,771 INFO L276 IsEmpty]: Start isEmpty. Operand 8330 states. [2021-01-20 12:01:49,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-01-20 12:01:49,777 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:49,777 INFO L504 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] [2021-01-20 12:01:49,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:01:49,979 INFO L429 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:49,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:49,979 INFO L82 PathProgramCache]: Analyzing trace with hash -800382706, now seen corresponding path program 77 times [2021-01-20 12:01:49,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:49,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381272745] [2021-01-20 12:01:49,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:50,262 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:50,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381272745] [2021-01-20 12:01:50,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972901257] [2021-01-20 12:01:50,263 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 [2021-01-20 12:01:50,341 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-01-20 12:01:50,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:50,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-20 12:01:50,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:50,378 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:50,397 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:50,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:50,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-01-20 12:01:50,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335922498] [2021-01-20 12:01:50,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-20 12:01:50,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:50,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-20 12:01:50,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-01-20 12:01:50,398 INFO L87 Difference]: Start difference. First operand 8330 states. 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) [2021-01-20 12:01:50,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:50,840 INFO L93 Difference]: Finished difference Result 8650 states and 19640 transitions. [2021-01-20 12:01:50,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-20 12:01:50,841 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 [2021-01-20 12:01:50,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:50,849 INFO L225 Difference]: With dead ends: 8650 [2021-01-20 12:01:50,850 INFO L226 Difference]: Without dead ends: 8380 [2021-01-20 12:01:50,850 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=320, Invalid=802, Unknown=0, NotChecked=0, Total=1122 [2021-01-20 12:01:50,850 INFO L78 Accepts]: Start accepts. Automaton has 8380 states. Word has length 91 [2021-01-20 12:01:50,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:50,850 INFO L481 AbstractCegarLoop]: Abstraction has 8380 states. [2021-01-20 12:01:50,850 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) [2021-01-20 12:01:50,851 INFO L276 IsEmpty]: Start isEmpty. Operand 8380 states. [2021-01-20 12:01:50,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-01-20 12:01:50,858 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:50,858 INFO L504 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] [2021-01-20 12:01:51,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2021-01-20 12:01:51,066 INFO L429 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:51,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:51,067 INFO L82 PathProgramCache]: Analyzing trace with hash 523642080, now seen corresponding path program 78 times [2021-01-20 12:01:51,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:51,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524151248] [2021-01-20 12:01:51,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:51,374 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:51,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524151248] [2021-01-20 12:01:51,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560443284] [2021-01-20 12:01:51,375 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 [2021-01-20 12:01:51,454 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-01-20 12:01:51,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:51,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-20 12:01:51,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:51,492 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:01:51,530 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:51,544 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:51,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:51,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2021-01-20 12:01:51,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432412647] [2021-01-20 12:01:51,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-20 12:01:51,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:51,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-20 12:01:51,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-01-20 12:01:51,545 INFO L87 Difference]: Start difference. First operand 8380 states. Second operand has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:01:52,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:52,079 INFO L93 Difference]: Finished difference Result 8700 states and 19740 transitions. [2021-01-20 12:01:52,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-20 12:01:52,079 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:01:52,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:52,088 INFO L225 Difference]: With dead ends: 8700 [2021-01-20 12:01:52,088 INFO L226 Difference]: Without dead ends: 8430 [2021-01-20 12:01:52,088 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=342, Invalid=990, Unknown=0, NotChecked=0, Total=1332 [2021-01-20 12:01:52,088 INFO L78 Accepts]: Start accepts. Automaton has 8430 states. Word has length 91 [2021-01-20 12:01:52,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:52,089 INFO L481 AbstractCegarLoop]: Abstraction has 8430 states. [2021-01-20 12:01:52,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:01:52,089 INFO L276 IsEmpty]: Start isEmpty. Operand 8430 states. [2021-01-20 12:01:52,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-01-20 12:01:52,096 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:52,096 INFO L504 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] [2021-01-20 12:01:52,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-01-20 12:01:52,302 INFO L429 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:52,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:52,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1634704890, now seen corresponding path program 79 times [2021-01-20 12:01:52,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:52,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116562048] [2021-01-20 12:01:52,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:52,574 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:52,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116562048] [2021-01-20 12:01:52,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38686235] [2021-01-20 12:01:52,575 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 [2021-01-20 12:01:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:52,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-20 12:01:52,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:52,695 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:52,712 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:52,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:52,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-01-20 12:01:52,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480310167] [2021-01-20 12:01:52,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-20 12:01:52,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:52,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-20 12:01:52,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-01-20 12:01:52,714 INFO L87 Difference]: Start difference. First operand 8430 states. 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) [2021-01-20 12:01:53,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:53,255 INFO L93 Difference]: Finished difference Result 8750 states and 19840 transitions. [2021-01-20 12:01:53,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-20 12:01:53,255 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 [2021-01-20 12:01:53,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:53,264 INFO L225 Difference]: With dead ends: 8750 [2021-01-20 12:01:53,264 INFO L226 Difference]: Without dead ends: 8480 [2021-01-20 12:01:53,264 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=334, Invalid=998, Unknown=0, NotChecked=0, Total=1332 [2021-01-20 12:01:53,264 INFO L78 Accepts]: Start accepts. Automaton has 8480 states. Word has length 91 [2021-01-20 12:01:53,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:53,265 INFO L481 AbstractCegarLoop]: Abstraction has 8480 states. [2021-01-20 12:01:53,265 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) [2021-01-20 12:01:53,265 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states. [2021-01-20 12:01:53,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-01-20 12:01:53,272 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:53,273 INFO L504 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] [2021-01-20 12:01:53,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,85 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:01:53,473 INFO L429 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:53,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:53,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1956342582, now seen corresponding path program 80 times [2021-01-20 12:01:53,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:53,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280734292] [2021-01-20 12:01:53,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:53,776 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:53,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280734292] [2021-01-20 12:01:53,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738279488] [2021-01-20 12:01:53,777 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 [2021-01-20 12:01:53,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:01:53,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:53,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-20 12:01:53,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:53,878 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:01:53,925 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:53,942 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:53,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:53,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2021-01-20 12:01:53,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903280933] [2021-01-20 12:01:53,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-20 12:01:53,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:53,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-20 12:01:53,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-01-20 12:01:53,944 INFO L87 Difference]: Start difference. First operand 8480 states. Second operand has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:01:54,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:54,595 INFO L93 Difference]: Finished difference Result 8850 states and 20040 transitions. [2021-01-20 12:01:54,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-20 12:01:54,595 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:01:54,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:54,603 INFO L225 Difference]: With dead ends: 8850 [2021-01-20 12:01:54,604 INFO L226 Difference]: Without dead ends: 8580 [2021-01-20 12:01:54,604 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=380, Invalid=1180, Unknown=0, NotChecked=0, Total=1560 [2021-01-20 12:01:54,604 INFO L78 Accepts]: Start accepts. Automaton has 8580 states. Word has length 91 [2021-01-20 12:01:54,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:54,604 INFO L481 AbstractCegarLoop]: Abstraction has 8580 states. [2021-01-20 12:01:54,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:01:54,604 INFO L276 IsEmpty]: Start isEmpty. Operand 8580 states. [2021-01-20 12:01:54,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-01-20 12:01:54,611 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:54,611 INFO L504 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] [2021-01-20 12:01:54,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:01:54,812 INFO L429 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:54,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:54,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1071498888, now seen corresponding path program 81 times [2021-01-20 12:01:54,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:54,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089060947] [2021-01-20 12:01:54,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:55,265 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:55,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089060947] [2021-01-20 12:01:55,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749022053] [2021-01-20 12:01:55,265 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 [2021-01-20 12:01:55,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-01-20 12:01:55,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:55,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-20 12:01:55,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:55,394 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:55,410 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:55,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:55,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-01-20 12:01:55,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847797707] [2021-01-20 12:01:55,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-20 12:01:55,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:55,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-20 12:01:55,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-01-20 12:01:55,412 INFO L87 Difference]: Start difference. First operand 8580 states. 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) [2021-01-20 12:01:56,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:56,026 INFO L93 Difference]: Finished difference Result 8900 states and 20140 transitions. [2021-01-20 12:01:56,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-20 12:01:56,027 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 [2021-01-20 12:01:56,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:56,036 INFO L225 Difference]: With dead ends: 8900 [2021-01-20 12:01:56,037 INFO L226 Difference]: Without dead ends: 8630 [2021-01-20 12:01:56,037 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=384, Invalid=1176, Unknown=0, NotChecked=0, Total=1560 [2021-01-20 12:01:56,037 INFO L78 Accepts]: Start accepts. Automaton has 8630 states. Word has length 91 [2021-01-20 12:01:56,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:56,037 INFO L481 AbstractCegarLoop]: Abstraction has 8630 states. [2021-01-20 12:01:56,037 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) [2021-01-20 12:01:56,037 INFO L276 IsEmpty]: Start isEmpty. Operand 8630 states. [2021-01-20 12:01:56,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-01-20 12:01:56,044 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:56,044 INFO L504 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] [2021-01-20 12:01:56,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,87 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:01:56,245 INFO L429 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:56,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:56,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1664715704, now seen corresponding path program 82 times [2021-01-20 12:01:56,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:56,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396729844] [2021-01-20 12:01:56,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:56,526 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:56,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396729844] [2021-01-20 12:01:56,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714180088] [2021-01-20 12:01:56,527 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 [2021-01-20 12:01:56,602 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:01:56,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:56,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-20 12:01:56,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:56,639 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:01:56,684 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:56,699 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:56,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:56,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2021-01-20 12:01:56,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100177423] [2021-01-20 12:01:56,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-20 12:01:56,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:56,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-20 12:01:56,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-01-20 12:01:56,701 INFO L87 Difference]: Start difference. First operand 8630 states. Second operand has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:01:57,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:57,467 INFO L93 Difference]: Finished difference Result 8950 states and 20240 transitions. [2021-01-20 12:01:57,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-01-20 12:01:57,470 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:01:57,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:57,479 INFO L225 Difference]: With dead ends: 8950 [2021-01-20 12:01:57,479 INFO L226 Difference]: Without dead ends: 8680 [2021-01-20 12:01:57,480 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=407, Invalid=1315, Unknown=0, NotChecked=0, Total=1722 [2021-01-20 12:01:57,480 INFO L78 Accepts]: Start accepts. Automaton has 8680 states. Word has length 91 [2021-01-20 12:01:57,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:57,480 INFO L481 AbstractCegarLoop]: Abstraction has 8680 states. [2021-01-20 12:01:57,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:01:57,480 INFO L276 IsEmpty]: Start isEmpty. Operand 8680 states. [2021-01-20 12:01:57,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-01-20 12:01:57,487 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:57,487 INFO L504 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] [2021-01-20 12:01:57,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:01:57,688 INFO L429 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:57,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:57,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1837401482, now seen corresponding path program 83 times [2021-01-20 12:01:57,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:57,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220327845] [2021-01-20 12:01:57,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:57,943 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:57,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220327845] [2021-01-20 12:01:57,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959340907] [2021-01-20 12:01:57,943 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 [2021-01-20 12:01:58,020 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-01-20 12:01:58,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:58,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-20 12:01:58,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:58,069 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:58,081 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:58,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:58,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-01-20 12:01:58,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937835125] [2021-01-20 12:01:58,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-20 12:01:58,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:58,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-20 12:01:58,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-01-20 12:01:58,083 INFO L87 Difference]: Start difference. First operand 8680 states. 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) [2021-01-20 12:01:58,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:01:58,772 INFO L93 Difference]: Finished difference Result 9000 states and 20340 transitions. [2021-01-20 12:01:58,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-20 12:01:58,772 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 [2021-01-20 12:01:58,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:01:58,781 INFO L225 Difference]: With dead ends: 9000 [2021-01-20 12:01:58,782 INFO L226 Difference]: Without dead ends: 8730 [2021-01-20 12:01:58,782 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=425, Invalid=1297, Unknown=0, NotChecked=0, Total=1722 [2021-01-20 12:01:58,782 INFO L78 Accepts]: Start accepts. Automaton has 8730 states. Word has length 91 [2021-01-20 12:01:58,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:01:58,782 INFO L481 AbstractCegarLoop]: Abstraction has 8730 states. [2021-01-20 12:01:58,782 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) [2021-01-20 12:01:58,782 INFO L276 IsEmpty]: Start isEmpty. Operand 8730 states. [2021-01-20 12:01:58,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-01-20 12:01:58,792 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:01:58,793 INFO L504 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] [2021-01-20 12:01:59,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:01:59,006 INFO L429 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:01:59,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:01:59,006 INFO L82 PathProgramCache]: Analyzing trace with hash 324270406, now seen corresponding path program 84 times [2021-01-20 12:01:59,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:01:59,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672033447] [2021-01-20 12:01:59,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:01:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:01:59,275 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:59,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672033447] [2021-01-20 12:01:59,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724334012] [2021-01-20 12:01:59,276 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 [2021-01-20 12:01:59,358 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-01-20 12:01:59,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:01:59,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-20 12:01:59,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:01:59,395 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:01:59,442 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:01:59,456 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:01:59,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:01:59,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2021-01-20 12:01:59,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362794699] [2021-01-20 12:01:59,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-20 12:01:59,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:01:59,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-20 12:01:59,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-01-20 12:01:59,458 INFO L87 Difference]: Start difference. First operand 8730 states. Second operand has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:00,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:00,304 INFO L93 Difference]: Finished difference Result 9050 states and 20440 transitions. [2021-01-20 12:02:00,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-20 12:02:00,305 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:02:00,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:00,313 INFO L225 Difference]: With dead ends: 9050 [2021-01-20 12:02:00,314 INFO L226 Difference]: Without dead ends: 8780 [2021-01-20 12:02:00,314 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=450, Invalid=1442, Unknown=0, NotChecked=0, Total=1892 [2021-01-20 12:02:00,314 INFO L78 Accepts]: Start accepts. Automaton has 8780 states. Word has length 91 [2021-01-20 12:02:00,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:00,314 INFO L481 AbstractCegarLoop]: Abstraction has 8780 states. [2021-01-20 12:02:00,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:00,314 INFO L276 IsEmpty]: Start isEmpty. Operand 8780 states. [2021-01-20 12:02:00,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-01-20 12:02:00,321 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:00,322 INFO L504 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] [2021-01-20 12:02:00,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:02:00,522 INFO L429 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:00,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:00,523 INFO L82 PathProgramCache]: Analyzing trace with hash -2080096012, now seen corresponding path program 85 times [2021-01-20 12:02:00,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:00,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324822120] [2021-01-20 12:02:00,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:00,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:00,932 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:00,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324822120] [2021-01-20 12:02:00,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479037746] [2021-01-20 12:02:00,933 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 [2021-01-20 12:02:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:01,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-20 12:02:01,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:01,054 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:01,071 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:01,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:01,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-01-20 12:02:01,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295288888] [2021-01-20 12:02:01,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-20 12:02:01,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:01,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-20 12:02:01,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-01-20 12:02:01,073 INFO L87 Difference]: Start difference. First operand 8780 states. 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) [2021-01-20 12:02:01,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:01,813 INFO L93 Difference]: Finished difference Result 9100 states and 20540 transitions. [2021-01-20 12:02:01,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-20 12:02:01,813 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 [2021-01-20 12:02:01,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:01,822 INFO L225 Difference]: With dead ends: 9100 [2021-01-20 12:02:01,822 INFO L226 Difference]: Without dead ends: 8830 [2021-01-20 12:02:01,823 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=482, Invalid=1410, Unknown=0, NotChecked=0, Total=1892 [2021-01-20 12:02:01,823 INFO L78 Accepts]: Start accepts. Automaton has 8830 states. Word has length 91 [2021-01-20 12:02:01,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:01,823 INFO L481 AbstractCegarLoop]: Abstraction has 8830 states. [2021-01-20 12:02:01,823 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) [2021-01-20 12:02:01,823 INFO L276 IsEmpty]: Start isEmpty. Operand 8830 states. [2021-01-20 12:02:01,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-01-20 12:02:01,830 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:01,830 INFO L504 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] [2021-01-20 12:02:02,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:02:02,031 INFO L429 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:02,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:02,032 INFO L82 PathProgramCache]: Analyzing trace with hash -858389564, now seen corresponding path program 86 times [2021-01-20 12:02:02,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:02,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334440101] [2021-01-20 12:02:02,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:02,285 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:02,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334440101] [2021-01-20 12:02:02,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391055144] [2021-01-20 12:02:02,285 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 [2021-01-20 12:02:02,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:02:02,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:02:02,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-20 12:02:02,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:02,395 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:02:02,438 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:02,448 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:02,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:02,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2021-01-20 12:02:02,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637475903] [2021-01-20 12:02:02,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-20 12:02:02,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:02,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-20 12:02:02,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2021-01-20 12:02:02,449 INFO L87 Difference]: Start difference. First operand 8830 states. Second operand has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:03,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:03,416 INFO L93 Difference]: Finished difference Result 9150 states and 20640 transitions. [2021-01-20 12:02:03,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-20 12:02:03,416 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:02:03,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:03,425 INFO L225 Difference]: With dead ends: 9150 [2021-01-20 12:02:03,425 INFO L226 Difference]: Without dead ends: 8880 [2021-01-20 12:02:03,426 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-01-20 12:02:03,426 INFO L78 Accepts]: Start accepts. Automaton has 8880 states. Word has length 91 [2021-01-20 12:02:03,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:03,426 INFO L481 AbstractCegarLoop]: Abstraction has 8880 states. [2021-01-20 12:02:03,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:03,426 INFO L276 IsEmpty]: Start isEmpty. Operand 8880 states. [2021-01-20 12:02:03,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-01-20 12:02:03,433 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:03,433 INFO L504 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] [2021-01-20 12:02:03,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2021-01-20 12:02:03,634 INFO L429 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:03,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:03,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1948422926, now seen corresponding path program 87 times [2021-01-20 12:02:03,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:03,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223868993] [2021-01-20 12:02:03,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:03,877 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:03,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223868993] [2021-01-20 12:02:03,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002162385] [2021-01-20 12:02:03,878 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 [2021-01-20 12:02:03,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-01-20 12:02:03,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:02:03,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-20 12:02:03,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:03,999 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:04,008 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:04,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:04,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-01-20 12:02:04,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340847413] [2021-01-20 12:02:04,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-20 12:02:04,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:04,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-20 12:02:04,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-01-20 12:02:04,009 INFO L87 Difference]: Start difference. First operand 8880 states. 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) [2021-01-20 12:02:04,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:04,802 INFO L93 Difference]: Finished difference Result 9200 states and 20740 transitions. [2021-01-20 12:02:04,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-20 12:02:04,803 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 [2021-01-20 12:02:04,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:04,812 INFO L225 Difference]: With dead ends: 9200 [2021-01-20 12:02:04,812 INFO L226 Difference]: Without dead ends: 8930 [2021-01-20 12:02:04,812 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=555, Invalid=1515, Unknown=0, NotChecked=0, Total=2070 [2021-01-20 12:02:04,813 INFO L78 Accepts]: Start accepts. Automaton has 8930 states. Word has length 91 [2021-01-20 12:02:04,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:04,813 INFO L481 AbstractCegarLoop]: Abstraction has 8930 states. [2021-01-20 12:02:04,813 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) [2021-01-20 12:02:04,813 INFO L276 IsEmpty]: Start isEmpty. Operand 8930 states. [2021-01-20 12:02:04,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-01-20 12:02:04,820 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:04,820 INFO L504 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] [2021-01-20 12:02:05,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:02:05,022 INFO L429 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:05,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:05,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1028820030, now seen corresponding path program 88 times [2021-01-20 12:02:05,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:05,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113748872] [2021-01-20 12:02:05,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:05,259 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:05,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113748872] [2021-01-20 12:02:05,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180968588] [2021-01-20 12:02:05,259 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 [2021-01-20 12:02:05,333 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:02:05,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:02:05,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-20 12:02:05,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:05,362 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:02:05,397 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:05,409 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:05,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:05,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2021-01-20 12:02:05,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341813640] [2021-01-20 12:02:05,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-20 12:02:05,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:05,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-20 12:02:05,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-01-20 12:02:05,411 INFO L87 Difference]: Start difference. First operand 8930 states. Second operand has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:06,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:06,538 INFO L93 Difference]: Finished difference Result 9634 states and 21864 transitions. [2021-01-20 12:02:06,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-01-20 12:02:06,539 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:02:06,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:06,548 INFO L225 Difference]: With dead ends: 9634 [2021-01-20 12:02:06,548 INFO L226 Difference]: Without dead ends: 9050 [2021-01-20 12:02:06,549 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=607, Invalid=1843, Unknown=0, NotChecked=0, Total=2450 [2021-01-20 12:02:06,549 INFO L78 Accepts]: Start accepts. Automaton has 9050 states. Word has length 91 [2021-01-20 12:02:06,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:06,549 INFO L481 AbstractCegarLoop]: Abstraction has 9050 states. [2021-01-20 12:02:06,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:06,549 INFO L276 IsEmpty]: Start isEmpty. Operand 9050 states. [2021-01-20 12:02:06,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-01-20 12:02:06,556 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:06,556 INFO L504 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] [2021-01-20 12:02:06,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2021-01-20 12:02:06,763 INFO L429 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:06,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:06,763 INFO L82 PathProgramCache]: Analyzing trace with hash -676744112, now seen corresponding path program 89 times [2021-01-20 12:02:06,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:06,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454767190] [2021-01-20 12:02:06,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:07,000 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:07,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454767190] [2021-01-20 12:02:07,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575404675] [2021-01-20 12:02:07,001 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 [2021-01-20 12:02:07,254 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-01-20 12:02:07,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:02:07,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-20 12:02:07,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:07,305 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:07,319 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:07,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:07,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-01-20 12:02:07,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820965723] [2021-01-20 12:02:07,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-20 12:02:07,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:07,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-20 12:02:07,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-01-20 12:02:07,321 INFO L87 Difference]: Start difference. First operand 9050 states. 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) [2021-01-20 12:02:08,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:08,273 INFO L93 Difference]: Finished difference Result 10522 states and 24394 transitions. [2021-01-20 12:02:08,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-20 12:02:08,273 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 [2021-01-20 12:02:08,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:08,284 INFO L225 Difference]: With dead ends: 10522 [2021-01-20 12:02:08,285 INFO L226 Difference]: Without dead ends: 10237 [2021-01-20 12:02:08,285 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=645, Invalid=1611, Unknown=0, NotChecked=0, Total=2256 [2021-01-20 12:02:08,285 INFO L78 Accepts]: Start accepts. Automaton has 10237 states. Word has length 91 [2021-01-20 12:02:08,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:08,285 INFO L481 AbstractCegarLoop]: Abstraction has 10237 states. [2021-01-20 12:02:08,286 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) [2021-01-20 12:02:08,286 INFO L276 IsEmpty]: Start isEmpty. Operand 10237 states. [2021-01-20 12:02:08,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-01-20 12:02:08,295 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:08,295 INFO L504 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] [2021-01-20 12:02:08,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:02:08,498 INFO L429 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:08,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:08,498 INFO L82 PathProgramCache]: Analyzing trace with hash -679717342, now seen corresponding path program 90 times [2021-01-20 12:02:08,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:08,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595348759] [2021-01-20 12:02:08,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:08,759 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:08,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595348759] [2021-01-20 12:02:08,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997639430] [2021-01-20 12:02:08,760 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 [2021-01-20 12:02:08,841 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-01-20 12:02:08,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:02:08,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-20 12:02:08,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:08,889 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:08,907 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:08,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:08,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-01-20 12:02:08,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630060397] [2021-01-20 12:02:08,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-20 12:02:08,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:08,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-20 12:02:08,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-01-20 12:02:08,909 INFO L87 Difference]: Start difference. First operand 10237 states. 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) [2021-01-20 12:02:10,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:10,043 INFO L93 Difference]: Finished difference Result 9789 states and 22191 transitions. [2021-01-20 12:02:10,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-20 12:02:10,044 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 [2021-01-20 12:02:10,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:10,053 INFO L225 Difference]: With dead ends: 9789 [2021-01-20 12:02:10,054 INFO L226 Difference]: Without dead ends: 9220 [2021-01-20 12:02:10,054 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=610, Invalid=1742, Unknown=0, NotChecked=0, Total=2352 [2021-01-20 12:02:10,054 INFO L78 Accepts]: Start accepts. Automaton has 9220 states. Word has length 91 [2021-01-20 12:02:10,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:10,054 INFO L481 AbstractCegarLoop]: Abstraction has 9220 states. [2021-01-20 12:02:10,054 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) [2021-01-20 12:02:10,055 INFO L276 IsEmpty]: Start isEmpty. Operand 9220 states. [2021-01-20 12:02:10,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-01-20 12:02:10,062 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:10,062 INFO L504 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] [2021-01-20 12:02:10,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2021-01-20 12:02:10,263 INFO L429 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:10,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:10,264 INFO L82 PathProgramCache]: Analyzing trace with hash 287717422, now seen corresponding path program 91 times [2021-01-20 12:02:10,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:10,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433111968] [2021-01-20 12:02:10,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:10,594 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:10,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433111968] [2021-01-20 12:02:10,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572520246] [2021-01-20 12:02:10,595 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 [2021-01-20 12:02:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:10,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-20 12:02:10,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:10,687 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:10,714 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:10,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:10,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-01-20 12:02:10,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670779974] [2021-01-20 12:02:10,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-20 12:02:10,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:10,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-20 12:02:10,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-01-20 12:02:10,716 INFO L87 Difference]: Start difference. First operand 9220 states. 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) [2021-01-20 12:02:11,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:11,228 INFO L93 Difference]: Finished difference Result 9540 states and 21540 transitions. [2021-01-20 12:02:11,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-20 12:02:11,228 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 [2021-01-20 12:02:11,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:11,237 INFO L225 Difference]: With dead ends: 9540 [2021-01-20 12:02:11,237 INFO L226 Difference]: Without dead ends: 9270 [2021-01-20 12:02:11,238 INFO L769 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 [2021-01-20 12:02:11,238 INFO L78 Accepts]: Start accepts. Automaton has 9270 states. Word has length 96 [2021-01-20 12:02:11,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:11,238 INFO L481 AbstractCegarLoop]: Abstraction has 9270 states. [2021-01-20 12:02:11,238 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) [2021-01-20 12:02:11,238 INFO L276 IsEmpty]: Start isEmpty. Operand 9270 states. [2021-01-20 12:02:11,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-01-20 12:02:11,248 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:11,251 INFO L504 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] [2021-01-20 12:02:11,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-01-20 12:02:11,465 INFO L429 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:11,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:11,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1611742208, now seen corresponding path program 92 times [2021-01-20 12:02:11,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:11,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171054307] [2021-01-20 12:02:11,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:11,799 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:11,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171054307] [2021-01-20 12:02:11,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544053569] [2021-01-20 12:02:11,799 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 [2021-01-20 12:02:11,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:02:11,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:02:11,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-20 12:02:11,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:11,916 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:02:11,931 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:11,950 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:11,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:11,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-01-20 12:02:11,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603412265] [2021-01-20 12:02:11,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-20 12:02:11,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:11,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-20 12:02:11,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-01-20 12:02:11,954 INFO L87 Difference]: Start difference. First operand 9270 states. Second operand has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:12,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:12,610 INFO L93 Difference]: Finished difference Result 9590 states and 21640 transitions. [2021-01-20 12:02:12,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-20 12:02:12,610 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:02:12,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:12,621 INFO L225 Difference]: With dead ends: 9590 [2021-01-20 12:02:12,621 INFO L226 Difference]: Without dead ends: 9320 [2021-01-20 12:02:12,621 INFO L769 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 [2021-01-20 12:02:12,621 INFO L78 Accepts]: Start accepts. Automaton has 9320 states. Word has length 96 [2021-01-20 12:02:12,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:12,622 INFO L481 AbstractCegarLoop]: Abstraction has 9320 states. [2021-01-20 12:02:12,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:12,622 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states. [2021-01-20 12:02:12,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-01-20 12:02:12,630 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:12,630 INFO L504 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] [2021-01-20 12:02:12,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-01-20 12:02:12,831 INFO L429 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:12,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:12,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1572162278, now seen corresponding path program 93 times [2021-01-20 12:02:12,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:12,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189311591] [2021-01-20 12:02:12,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:13,127 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:13,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189311591] [2021-01-20 12:02:13,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040357940] [2021-01-20 12:02:13,128 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 [2021-01-20 12:02:13,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-01-20 12:02:13,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:02:13,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 31 conjunts are in the unsatisfiable core [2021-01-20 12:02:13,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:13,228 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:13,240 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:13,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:13,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-01-20 12:02:13,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285085355] [2021-01-20 12:02:13,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-20 12:02:13,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:13,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-20 12:02:13,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-01-20 12:02:13,242 INFO L87 Difference]: Start difference. First operand 9320 states. 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) [2021-01-20 12:02:14,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:14,020 INFO L93 Difference]: Finished difference Result 9640 states and 21740 transitions. [2021-01-20 12:02:14,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-20 12:02:14,020 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 [2021-01-20 12:02:14,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:14,030 INFO L225 Difference]: With dead ends: 9640 [2021-01-20 12:02:14,030 INFO L226 Difference]: Without dead ends: 9370 [2021-01-20 12:02:14,031 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=345, Invalid=1061, Unknown=0, NotChecked=0, Total=1406 [2021-01-20 12:02:14,031 INFO L78 Accepts]: Start accepts. Automaton has 9370 states. Word has length 96 [2021-01-20 12:02:14,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:14,031 INFO L481 AbstractCegarLoop]: Abstraction has 9370 states. [2021-01-20 12:02:14,031 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) [2021-01-20 12:02:14,031 INFO L276 IsEmpty]: Start isEmpty. Operand 9370 states. [2021-01-20 12:02:14,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-01-20 12:02:14,038 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:14,039 INFO L504 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] [2021-01-20 12:02:14,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:02:14,241 INFO L429 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:14,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:14,241 INFO L82 PathProgramCache]: Analyzing trace with hash -868242454, now seen corresponding path program 94 times [2021-01-20 12:02:14,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:14,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573614809] [2021-01-20 12:02:14,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:14,557 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:14,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573614809] [2021-01-20 12:02:14,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283967601] [2021-01-20 12:02:14,557 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 [2021-01-20 12:02:14,632 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:02:14,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:02:14,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-20 12:02:14,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:14,669 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:02:14,687 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:14,701 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:14,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:14,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-01-20 12:02:14,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973872465] [2021-01-20 12:02:14,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-20 12:02:14,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:14,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-20 12:02:14,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2021-01-20 12:02:14,702 INFO L87 Difference]: Start difference. First operand 9370 states. Second operand has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:15,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:15,490 INFO L93 Difference]: Finished difference Result 9690 states and 21840 transitions. [2021-01-20 12:02:15,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-01-20 12:02:15,491 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:02:15,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:15,502 INFO L225 Difference]: With dead ends: 9690 [2021-01-20 12:02:15,502 INFO L226 Difference]: Without dead ends: 9420 [2021-01-20 12:02:15,503 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=408, Invalid=1314, Unknown=0, NotChecked=0, Total=1722 [2021-01-20 12:02:15,503 INFO L78 Accepts]: Start accepts. Automaton has 9420 states. Word has length 96 [2021-01-20 12:02:15,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:15,503 INFO L481 AbstractCegarLoop]: Abstraction has 9420 states. [2021-01-20 12:02:15,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:15,503 INFO L276 IsEmpty]: Start isEmpty. Operand 9420 states. [2021-01-20 12:02:15,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-01-20 12:02:15,514 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:15,515 INFO L504 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] [2021-01-20 12:02:15,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2021-01-20 12:02:15,729 INFO L429 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:15,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:15,729 INFO L82 PathProgramCache]: Analyzing trace with hash 16601240, now seen corresponding path program 95 times [2021-01-20 12:02:15,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:15,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108324424] [2021-01-20 12:02:15,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:16,010 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:16,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108324424] [2021-01-20 12:02:16,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215379717] [2021-01-20 12:02:16,011 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 [2021-01-20 12:02:16,090 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-01-20 12:02:16,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:02:16,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-20 12:02:16,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:16,111 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:16,134 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:16,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:16,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-01-20 12:02:16,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629521606] [2021-01-20 12:02:16,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-20 12:02:16,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:16,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-20 12:02:16,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-01-20 12:02:16,136 INFO L87 Difference]: Start difference. First operand 9420 states. 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) [2021-01-20 12:02:16,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:16,806 INFO L93 Difference]: Finished difference Result 9740 states and 21940 transitions. [2021-01-20 12:02:16,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-20 12:02:16,806 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 [2021-01-20 12:02:16,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:16,816 INFO L225 Difference]: With dead ends: 9740 [2021-01-20 12:02:16,816 INFO L226 Difference]: Without dead ends: 9470 [2021-01-20 12:02:16,816 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=372, Invalid=1188, Unknown=0, NotChecked=0, Total=1560 [2021-01-20 12:02:16,816 INFO L78 Accepts]: Start accepts. Automaton has 9470 states. Word has length 96 [2021-01-20 12:02:16,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:16,817 INFO L481 AbstractCegarLoop]: Abstraction has 9470 states. [2021-01-20 12:02:16,817 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) [2021-01-20 12:02:16,817 INFO L276 IsEmpty]: Start isEmpty. Operand 9470 states. [2021-01-20 12:02:16,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-01-20 12:02:16,825 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:16,825 INFO L504 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] [2021-01-20 12:02:17,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,101 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:02:17,026 INFO L429 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:17,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:17,026 INFO L82 PathProgramCache]: Analyzing trace with hash -576615576, now seen corresponding path program 96 times [2021-01-20 12:02:17,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:17,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404659710] [2021-01-20 12:02:17,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:17,322 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:17,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404659710] [2021-01-20 12:02:17,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53084692] [2021-01-20 12:02:17,322 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 [2021-01-20 12:02:17,402 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-01-20 12:02:17,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:02:17,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-20 12:02:17,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:17,436 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:02:17,452 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:17,467 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:17,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:17,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-01-20 12:02:17,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073124102] [2021-01-20 12:02:17,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-20 12:02:17,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:17,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-20 12:02:17,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-01-20 12:02:17,468 INFO L87 Difference]: Start difference. First operand 9470 states. Second operand has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:18,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:18,382 INFO L93 Difference]: Finished difference Result 9790 states and 22040 transitions. [2021-01-20 12:02:18,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-20 12:02:18,382 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:02:18,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:18,392 INFO L225 Difference]: With dead ends: 9790 [2021-01-20 12:02:18,392 INFO L226 Difference]: Without dead ends: 9520 [2021-01-20 12:02:18,392 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=443, Invalid=1449, Unknown=0, NotChecked=0, Total=1892 [2021-01-20 12:02:18,393 INFO L78 Accepts]: Start accepts. Automaton has 9520 states. Word has length 96 [2021-01-20 12:02:18,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:18,393 INFO L481 AbstractCegarLoop]: Abstraction has 9520 states. [2021-01-20 12:02:18,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:18,393 INFO L276 IsEmpty]: Start isEmpty. Operand 9520 states. [2021-01-20 12:02:18,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-01-20 12:02:18,400 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:18,400 INFO L504 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] [2021-01-20 12:02:18,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2021-01-20 12:02:18,601 INFO L429 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:18,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:18,602 INFO L82 PathProgramCache]: Analyzing trace with hash -749301354, now seen corresponding path program 97 times [2021-01-20 12:02:18,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:18,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118707722] [2021-01-20 12:02:18,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:18,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:18,872 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:18,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118707722] [2021-01-20 12:02:18,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522320850] [2021-01-20 12:02:18,872 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 [2021-01-20 12:02:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:18,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-20 12:02:18,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:19,149 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:19,160 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:19,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:19,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-01-20 12:02:19,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530929608] [2021-01-20 12:02:19,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-20 12:02:19,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:19,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-20 12:02:19,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-01-20 12:02:19,162 INFO L87 Difference]: Start difference. First operand 9520 states. 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) [2021-01-20 12:02:19,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:19,930 INFO L93 Difference]: Finished difference Result 9840 states and 22140 transitions. [2021-01-20 12:02:19,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-20 12:02:19,930 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 [2021-01-20 12:02:19,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:19,940 INFO L225 Difference]: With dead ends: 9840 [2021-01-20 12:02:19,940 INFO L226 Difference]: Without dead ends: 9570 [2021-01-20 12:02:19,941 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=415, Invalid=1307, Unknown=0, NotChecked=0, Total=1722 [2021-01-20 12:02:19,941 INFO L78 Accepts]: Start accepts. Automaton has 9570 states. Word has length 96 [2021-01-20 12:02:19,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:19,941 INFO L481 AbstractCegarLoop]: Abstraction has 9570 states. [2021-01-20 12:02:19,941 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) [2021-01-20 12:02:19,941 INFO L276 IsEmpty]: Start isEmpty. Operand 9570 states. [2021-01-20 12:02:19,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-01-20 12:02:19,949 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:19,949 INFO L504 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] [2021-01-20 12:02:20,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:02:20,150 INFO L429 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:20,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:20,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1412370534, now seen corresponding path program 98 times [2021-01-20 12:02:20,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:20,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685703608] [2021-01-20 12:02:20,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:20,432 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:20,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685703608] [2021-01-20 12:02:20,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416875572] [2021-01-20 12:02:20,432 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 [2021-01-20 12:02:20,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:02:20,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:02:20,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-20 12:02:20,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:20,537 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:02:20,561 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:20,579 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:20,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:20,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-01-20 12:02:20,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848025427] [2021-01-20 12:02:20,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-20 12:02:20,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:20,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-20 12:02:20,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-01-20 12:02:20,580 INFO L87 Difference]: Start difference. First operand 9570 states. Second operand has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:21,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:21,559 INFO L93 Difference]: Finished difference Result 9890 states and 22240 transitions. [2021-01-20 12:02:21,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-20 12:02:21,560 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:02:21,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:21,569 INFO L225 Difference]: With dead ends: 9890 [2021-01-20 12:02:21,570 INFO L226 Difference]: Without dead ends: 9620 [2021-01-20 12:02:21,570 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-01-20 12:02:21,570 INFO L78 Accepts]: Start accepts. Automaton has 9620 states. Word has length 96 [2021-01-20 12:02:21,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:21,570 INFO L481 AbstractCegarLoop]: Abstraction has 9620 states. [2021-01-20 12:02:21,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:21,570 INFO L276 IsEmpty]: Start isEmpty. Operand 9620 states. [2021-01-20 12:02:21,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-01-20 12:02:21,578 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:21,578 INFO L504 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] [2021-01-20 12:02:21,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,104 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:02:21,779 INFO L429 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:21,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:21,779 INFO L82 PathProgramCache]: Analyzing trace with hash -991995884, now seen corresponding path program 99 times [2021-01-20 12:02:21,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:21,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964639739] [2021-01-20 12:02:21,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:22,039 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:22,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964639739] [2021-01-20 12:02:22,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357588307] [2021-01-20 12:02:22,039 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 [2021-01-20 12:02:22,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-01-20 12:02:22,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:02:22,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-20 12:02:22,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:22,147 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:22,158 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:22,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:22,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-01-20 12:02:22,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668552735] [2021-01-20 12:02:22,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-20 12:02:22,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:22,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-20 12:02:22,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-01-20 12:02:22,160 INFO L87 Difference]: Start difference. First operand 9620 states. 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) [2021-01-20 12:02:22,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:22,978 INFO L93 Difference]: Finished difference Result 9940 states and 22340 transitions. [2021-01-20 12:02:22,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-20 12:02:22,979 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 [2021-01-20 12:02:22,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:22,989 INFO L225 Difference]: With dead ends: 9940 [2021-01-20 12:02:22,989 INFO L226 Difference]: Without dead ends: 9670 [2021-01-20 12:02:22,989 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=474, Invalid=1418, Unknown=0, NotChecked=0, Total=1892 [2021-01-20 12:02:22,989 INFO L78 Accepts]: Start accepts. Automaton has 9670 states. Word has length 96 [2021-01-20 12:02:22,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:22,990 INFO L481 AbstractCegarLoop]: Abstraction has 9670 states. [2021-01-20 12:02:22,990 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) [2021-01-20 12:02:22,990 INFO L276 IsEmpty]: Start isEmpty. Operand 9670 states. [2021-01-20 12:02:22,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-01-20 12:02:22,997 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:22,997 INFO L504 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] [2021-01-20 12:02:23,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable110 [2021-01-20 12:02:23,198 INFO L429 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:23,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:23,199 INFO L82 PathProgramCache]: Analyzing trace with hash 229710564, now seen corresponding path program 100 times [2021-01-20 12:02:23,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:23,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700255240] [2021-01-20 12:02:23,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:23,466 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:23,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700255240] [2021-01-20 12:02:23,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267926493] [2021-01-20 12:02:23,467 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 [2021-01-20 12:02:23,542 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:02:23,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:02:23,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-20 12:02:23,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:23,575 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:02:23,592 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:23,602 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:23,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:23,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-01-20 12:02:23,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731682601] [2021-01-20 12:02:23,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-20 12:02:23,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:23,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-20 12:02:23,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-01-20 12:02:23,603 INFO L87 Difference]: Start difference. First operand 9670 states. Second operand has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:24,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:24,709 INFO L93 Difference]: Finished difference Result 9990 states and 22440 transitions. [2021-01-20 12:02:24,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-01-20 12:02:24,709 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:02:24,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:24,719 INFO L225 Difference]: With dead ends: 9990 [2021-01-20 12:02:24,719 INFO L226 Difference]: Without dead ends: 9720 [2021-01-20 12:02:24,720 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=561, Invalid=1695, Unknown=0, NotChecked=0, Total=2256 [2021-01-20 12:02:24,720 INFO L78 Accepts]: Start accepts. Automaton has 9720 states. Word has length 96 [2021-01-20 12:02:24,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:24,720 INFO L481 AbstractCegarLoop]: Abstraction has 9720 states. [2021-01-20 12:02:24,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:24,720 INFO L276 IsEmpty]: Start isEmpty. Operand 9720 states. [2021-01-20 12:02:24,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-01-20 12:02:24,729 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:24,729 INFO L504 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] [2021-01-20 12:02:24,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2021-01-20 12:02:24,930 INFO L429 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:24,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:24,930 INFO L82 PathProgramCache]: Analyzing trace with hash -860322798, now seen corresponding path program 101 times [2021-01-20 12:02:24,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:24,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369775819] [2021-01-20 12:02:24,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:25,171 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:25,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369775819] [2021-01-20 12:02:25,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909816348] [2021-01-20 12:02:25,172 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 [2021-01-20 12:02:25,246 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-01-20 12:02:25,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:02:25,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-20 12:02:25,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:25,276 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:25,433 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:25,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:25,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-01-20 12:02:25,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922004301] [2021-01-20 12:02:25,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-20 12:02:25,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:25,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-20 12:02:25,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-01-20 12:02:25,434 INFO L87 Difference]: Start difference. First operand 9720 states. 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) [2021-01-20 12:02:26,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:26,320 INFO L93 Difference]: Finished difference Result 10040 states and 22540 transitions. [2021-01-20 12:02:26,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-20 12:02:26,320 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 [2021-01-20 12:02:26,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:26,331 INFO L225 Difference]: With dead ends: 10040 [2021-01-20 12:02:26,331 INFO L226 Difference]: Without dead ends: 9770 [2021-01-20 12:02:26,331 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=549, Invalid=1521, Unknown=0, NotChecked=0, Total=2070 [2021-01-20 12:02:26,331 INFO L78 Accepts]: Start accepts. Automaton has 9770 states. Word has length 96 [2021-01-20 12:02:26,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:26,332 INFO L481 AbstractCegarLoop]: Abstraction has 9770 states. [2021-01-20 12:02:26,332 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) [2021-01-20 12:02:26,332 INFO L276 IsEmpty]: Start isEmpty. Operand 9770 states. [2021-01-20 12:02:26,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-01-20 12:02:26,339 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:26,339 INFO L504 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] [2021-01-20 12:02:26,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:02:26,540 INFO L429 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:26,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:26,541 INFO L82 PathProgramCache]: Analyzing trace with hash 59280098, now seen corresponding path program 102 times [2021-01-20 12:02:26,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:26,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805562512] [2021-01-20 12:02:26,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:26,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:26,802 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:26,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805562512] [2021-01-20 12:02:26,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136342417] [2021-01-20 12:02:26,802 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 [2021-01-20 12:02:26,883 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-01-20 12:02:26,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:02:26,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-20 12:02:26,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:26,930 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:26,939 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:26,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:26,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-01-20 12:02:26,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320711921] [2021-01-20 12:02:26,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-20 12:02:26,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:26,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-20 12:02:26,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-01-20 12:02:26,940 INFO L87 Difference]: Start difference. First operand 9770 states. Second operand has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:28,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:28,145 INFO L93 Difference]: Finished difference Result 10474 states and 23664 transitions. [2021-01-20 12:02:28,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-01-20 12:02:28,145 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:02:28,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:28,155 INFO L225 Difference]: With dead ends: 10474 [2021-01-20 12:02:28,155 INFO L226 Difference]: Without dead ends: 9890 [2021-01-20 12:02:28,156 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=562, Invalid=1888, Unknown=0, NotChecked=0, Total=2450 [2021-01-20 12:02:28,156 INFO L78 Accepts]: Start accepts. Automaton has 9890 states. Word has length 96 [2021-01-20 12:02:28,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:28,156 INFO L481 AbstractCegarLoop]: Abstraction has 9890 states. [2021-01-20 12:02:28,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:28,156 INFO L276 IsEmpty]: Start isEmpty. Operand 9890 states. [2021-01-20 12:02:28,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-01-20 12:02:28,164 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:28,164 INFO L504 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] [2021-01-20 12:02:28,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2021-01-20 12:02:28,365 INFO L429 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:28,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:28,365 INFO L82 PathProgramCache]: Analyzing trace with hash 411356016, now seen corresponding path program 103 times [2021-01-20 12:02:28,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:28,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882326693] [2021-01-20 12:02:28,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:28,620 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:28,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882326693] [2021-01-20 12:02:28,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698590308] [2021-01-20 12:02:28,621 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 [2021-01-20 12:02:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:28,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-20 12:02:28,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:28,718 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:28,728 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:28,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:28,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-01-20 12:02:28,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471690792] [2021-01-20 12:02:28,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-20 12:02:28,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:28,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-20 12:02:28,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-01-20 12:02:28,729 INFO L87 Difference]: Start difference. First operand 9890 states. 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) [2021-01-20 12:02:29,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:29,691 INFO L93 Difference]: Finished difference Result 11362 states and 26194 transitions. [2021-01-20 12:02:29,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-20 12:02:29,692 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 [2021-01-20 12:02:29,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:29,703 INFO L225 Difference]: With dead ends: 11362 [2021-01-20 12:02:29,703 INFO L226 Difference]: Without dead ends: 11077 [2021-01-20 12:02:29,703 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=641, Invalid=1615, Unknown=0, NotChecked=0, Total=2256 [2021-01-20 12:02:29,704 INFO L78 Accepts]: Start accepts. Automaton has 11077 states. Word has length 96 [2021-01-20 12:02:29,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:29,704 INFO L481 AbstractCegarLoop]: Abstraction has 11077 states. [2021-01-20 12:02:29,704 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) [2021-01-20 12:02:29,704 INFO L276 IsEmpty]: Start isEmpty. Operand 11077 states. [2021-01-20 12:02:29,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-01-20 12:02:29,712 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:29,712 INFO L504 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] [2021-01-20 12:02:29,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2021-01-20 12:02:29,912 INFO L429 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:29,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:29,913 INFO L82 PathProgramCache]: Analyzing trace with hash 408382786, now seen corresponding path program 104 times [2021-01-20 12:02:29,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:29,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337181274] [2021-01-20 12:02:29,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:30,175 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:30,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337181274] [2021-01-20 12:02:30,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926757552] [2021-01-20 12:02:30,176 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 [2021-01-20 12:02:30,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:02:30,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:02:30,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-20 12:02:30,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:30,301 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:30,311 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:30,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:30,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-01-20 12:02:30,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72976136] [2021-01-20 12:02:30,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-20 12:02:30,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:30,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-20 12:02:30,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-01-20 12:02:30,312 INFO L87 Difference]: Start difference. First operand 11077 states. Second operand has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:31,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:31,487 INFO L93 Difference]: Finished difference Result 10629 states and 23991 transitions. [2021-01-20 12:02:31,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-20 12:02:31,488 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:02:31,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:31,498 INFO L225 Difference]: With dead ends: 10629 [2021-01-20 12:02:31,498 INFO L226 Difference]: Without dead ends: 10060 [2021-01-20 12:02:31,499 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=622, Invalid=1828, Unknown=0, NotChecked=0, Total=2450 [2021-01-20 12:02:31,499 INFO L78 Accepts]: Start accepts. Automaton has 10060 states. Word has length 96 [2021-01-20 12:02:31,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:31,499 INFO L481 AbstractCegarLoop]: Abstraction has 10060 states. [2021-01-20 12:02:31,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:31,499 INFO L276 IsEmpty]: Start isEmpty. Operand 10060 states. [2021-01-20 12:02:31,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-20 12:02:31,507 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:31,507 INFO L504 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] [2021-01-20 12:02:31,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2021-01-20 12:02:31,708 INFO L429 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:31,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:31,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1918560897, now seen corresponding path program 105 times [2021-01-20 12:02:31,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:31,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707488839] [2021-01-20 12:02:31,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:31,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:32,211 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:32,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707488839] [2021-01-20 12:02:32,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643694489] [2021-01-20 12:02:32,211 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 [2021-01-20 12:02:32,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-01-20 12:02:32,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:02:32,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-20 12:02:32,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:32,354 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:32,378 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:32,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:32,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-01-20 12:02:32,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864450713] [2021-01-20 12:02:32,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-20 12:02:32,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:32,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-20 12:02:32,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2021-01-20 12:02:32,379 INFO L87 Difference]: Start difference. First operand 10060 states. 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) [2021-01-20 12:02:32,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:32,968 INFO L93 Difference]: Finished difference Result 10380 states and 23340 transitions. [2021-01-20 12:02:32,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-20 12:02:32,969 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 [2021-01-20 12:02:32,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:32,981 INFO L225 Difference]: With dead ends: 10380 [2021-01-20 12:02:32,981 INFO L226 Difference]: Without dead ends: 10110 [2021-01-20 12:02:32,982 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=403, Invalid=1003, Unknown=0, NotChecked=0, Total=1406 [2021-01-20 12:02:32,982 INFO L78 Accepts]: Start accepts. Automaton has 10110 states. Word has length 101 [2021-01-20 12:02:32,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:32,982 INFO L481 AbstractCegarLoop]: Abstraction has 10110 states. [2021-01-20 12:02:32,982 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) [2021-01-20 12:02:32,982 INFO L276 IsEmpty]: Start isEmpty. Operand 10110 states. [2021-01-20 12:02:32,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-20 12:02:32,993 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:32,993 INFO L504 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] [2021-01-20 12:02:33,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,111 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:02:33,195 INFO L429 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:33,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:33,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1149434577, now seen corresponding path program 106 times [2021-01-20 12:02:33,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:33,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489549177] [2021-01-20 12:02:33,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:33,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:33,598 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:33,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489549177] [2021-01-20 12:02:33,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985283402] [2021-01-20 12:02:33,598 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 [2021-01-20 12:02:33,684 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:02:33,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:02:33,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-20 12:02:33,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:33,717 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:02:33,781 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:33,812 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:33,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:33,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-01-20 12:02:33,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532138312] [2021-01-20 12:02:33,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-20 12:02:33,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:33,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-20 12:02:33,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2021-01-20 12:02:33,814 INFO L87 Difference]: Start difference. First operand 10110 states. Second operand has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:34,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:34,526 INFO L93 Difference]: Finished difference Result 10430 states and 23440 transitions. [2021-01-20 12:02:34,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-20 12:02:34,527 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:02:34,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:34,538 INFO L225 Difference]: With dead ends: 10430 [2021-01-20 12:02:34,539 INFO L226 Difference]: Without dead ends: 10160 [2021-01-20 12:02:34,539 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=426, Invalid=1214, Unknown=0, NotChecked=0, Total=1640 [2021-01-20 12:02:34,539 INFO L78 Accepts]: Start accepts. Automaton has 10160 states. Word has length 101 [2021-01-20 12:02:34,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:34,539 INFO L481 AbstractCegarLoop]: Abstraction has 10160 states. [2021-01-20 12:02:34,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:34,540 INFO L276 IsEmpty]: Start isEmpty. Operand 10160 states. [2021-01-20 12:02:34,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-20 12:02:34,550 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:34,550 INFO L504 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] [2021-01-20 12:02:34,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2021-01-20 12:02:34,751 INFO L429 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:34,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:34,753 INFO L82 PathProgramCache]: Analyzing trace with hash 187915115, now seen corresponding path program 107 times [2021-01-20 12:02:34,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:34,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877346748] [2021-01-20 12:02:34,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:35,126 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:35,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877346748] [2021-01-20 12:02:35,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887101648] [2021-01-20 12:02:35,126 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 [2021-01-20 12:02:35,206 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-01-20 12:02:35,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:02:35,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-20 12:02:35,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:35,253 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:35,271 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:35,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:35,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-01-20 12:02:35,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485024640] [2021-01-20 12:02:35,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-20 12:02:35,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:35,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-20 12:02:35,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-01-20 12:02:35,273 INFO L87 Difference]: Start difference. First operand 10160 states. 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) [2021-01-20 12:02:35,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:35,934 INFO L93 Difference]: Finished difference Result 10480 states and 23540 transitions. [2021-01-20 12:02:35,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-20 12:02:35,935 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 [2021-01-20 12:02:35,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:35,945 INFO L225 Difference]: With dead ends: 10480 [2021-01-20 12:02:35,945 INFO L226 Difference]: Without dead ends: 10210 [2021-01-20 12:02:35,946 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=416, Invalid=1224, Unknown=0, NotChecked=0, Total=1640 [2021-01-20 12:02:35,946 INFO L78 Accepts]: Start accepts. Automaton has 10210 states. Word has length 101 [2021-01-20 12:02:35,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:35,946 INFO L481 AbstractCegarLoop]: Abstraction has 10210 states. [2021-01-20 12:02:35,946 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) [2021-01-20 12:02:35,946 INFO L276 IsEmpty]: Start isEmpty. Operand 10210 states. [2021-01-20 12:02:35,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-20 12:02:35,955 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:35,955 INFO L504 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] [2021-01-20 12:02:36,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2021-01-20 12:02:36,156 INFO L429 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:36,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:36,156 INFO L82 PathProgramCache]: Analyzing trace with hash 297668155, now seen corresponding path program 108 times [2021-01-20 12:02:36,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:36,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111498616] [2021-01-20 12:02:36,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:36,523 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:36,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111498616] [2021-01-20 12:02:36,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987091552] [2021-01-20 12:02:36,524 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 [2021-01-20 12:02:36,607 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-01-20 12:02:36,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:02:36,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-20 12:02:36,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:36,636 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:02:36,679 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:36,703 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:36,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:36,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-01-20 12:02:36,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715604241] [2021-01-20 12:02:36,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-20 12:02:36,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:36,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-20 12:02:36,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2021-01-20 12:02:36,705 INFO L87 Difference]: Start difference. First operand 10210 states. Second operand has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:37,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:37,486 INFO L93 Difference]: Finished difference Result 10580 states and 23740 transitions. [2021-01-20 12:02:37,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-01-20 12:02:37,487 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:02:37,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:37,498 INFO L225 Difference]: With dead ends: 10580 [2021-01-20 12:02:37,498 INFO L226 Difference]: Without dead ends: 10310 [2021-01-20 12:02:37,498 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=465, Invalid=1427, Unknown=0, NotChecked=0, Total=1892 [2021-01-20 12:02:37,499 INFO L78 Accepts]: Start accepts. Automaton has 10310 states. Word has length 101 [2021-01-20 12:02:37,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:37,499 INFO L481 AbstractCegarLoop]: Abstraction has 10310 states. [2021-01-20 12:02:37,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:37,499 INFO L276 IsEmpty]: Start isEmpty. Operand 10310 states. [2021-01-20 12:02:37,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-20 12:02:37,507 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:37,508 INFO L504 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] [2021-01-20 12:02:37,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,114 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:02:37,709 INFO L429 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:37,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:37,710 INFO L82 PathProgramCache]: Analyzing trace with hash -198168215, now seen corresponding path program 109 times [2021-01-20 12:02:37,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:37,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138153138] [2021-01-20 12:02:37,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:38,195 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2021-01-20 12:02:38,233 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:38,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138153138] [2021-01-20 12:02:38,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996899990] [2021-01-20 12:02:38,233 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 [2021-01-20 12:02:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:38,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-20 12:02:38,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:38,359 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:38,374 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:38,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:38,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-01-20 12:02:38,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507613410] [2021-01-20 12:02:38,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-20 12:02:38,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:38,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-20 12:02:38,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-01-20 12:02:38,375 INFO L87 Difference]: Start difference. First operand 10310 states. 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) [2021-01-20 12:02:39,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:39,105 INFO L93 Difference]: Finished difference Result 10630 states and 23840 transitions. [2021-01-20 12:02:39,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-20 12:02:39,106 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 [2021-01-20 12:02:39,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:39,116 INFO L225 Difference]: With dead ends: 10630 [2021-01-20 12:02:39,117 INFO L226 Difference]: Without dead ends: 10360 [2021-01-20 12:02:39,117 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=467, Invalid=1425, Unknown=0, NotChecked=0, Total=1892 [2021-01-20 12:02:39,117 INFO L78 Accepts]: Start accepts. Automaton has 10360 states. Word has length 101 [2021-01-20 12:02:39,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:39,117 INFO L481 AbstractCegarLoop]: Abstraction has 10360 states. [2021-01-20 12:02:39,117 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) [2021-01-20 12:02:39,117 INFO L276 IsEmpty]: Start isEmpty. Operand 10360 states. [2021-01-20 12:02:39,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-20 12:02:39,126 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:39,126 INFO L504 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] [2021-01-20 12:02:39,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:02:39,327 INFO L429 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:39,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:39,327 INFO L82 PathProgramCache]: Analyzing trace with hash 505751609, now seen corresponding path program 110 times [2021-01-20 12:02:39,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:39,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271463684] [2021-01-20 12:02:39,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:39,671 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:39,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271463684] [2021-01-20 12:02:39,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154306713] [2021-01-20 12:02:39,671 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 [2021-01-20 12:02:39,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:02:39,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:02:39,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-20 12:02:39,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:39,779 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:02:39,824 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:39,839 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:39,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:39,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-01-20 12:02:39,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31277168] [2021-01-20 12:02:39,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-20 12:02:39,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:39,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-20 12:02:39,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2021-01-20 12:02:39,840 INFO L87 Difference]: Start difference. First operand 10360 states. Second operand has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:40,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:40,732 INFO L93 Difference]: Finished difference Result 10680 states and 23940 transitions. [2021-01-20 12:02:40,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-20 12:02:40,733 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:02:40,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:40,744 INFO L225 Difference]: With dead ends: 10680 [2021-01-20 12:02:40,744 INFO L226 Difference]: Without dead ends: 10410 [2021-01-20 12:02:40,745 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=490, Invalid=1580, Unknown=0, NotChecked=0, Total=2070 [2021-01-20 12:02:40,745 INFO L78 Accepts]: Start accepts. Automaton has 10410 states. Word has length 101 [2021-01-20 12:02:40,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:40,745 INFO L481 AbstractCegarLoop]: Abstraction has 10410 states. [2021-01-20 12:02:40,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:40,745 INFO L276 IsEmpty]: Start isEmpty. Operand 10410 states. [2021-01-20 12:02:40,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-20 12:02:40,754 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:40,754 INFO L504 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] [2021-01-20 12:02:40,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,116 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:02:40,955 INFO L429 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:40,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:40,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1390595303, now seen corresponding path program 111 times [2021-01-20 12:02:40,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:40,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404080257] [2021-01-20 12:02:40,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:41,264 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:41,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404080257] [2021-01-20 12:02:41,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216079923] [2021-01-20 12:02:41,264 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 [2021-01-20 12:02:41,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-01-20 12:02:41,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:02:41,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 30 conjunts are in the unsatisfiable core [2021-01-20 12:02:41,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:41,394 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:41,407 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:41,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:41,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-01-20 12:02:41,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430513585] [2021-01-20 12:02:41,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-20 12:02:41,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:41,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-20 12:02:41,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-01-20 12:02:41,408 INFO L87 Difference]: Start difference. First operand 10410 states. 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) [2021-01-20 12:02:42,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:42,216 INFO L93 Difference]: Finished difference Result 10730 states and 24040 transitions. [2021-01-20 12:02:42,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-20 12:02:42,216 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 [2021-01-20 12:02:42,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:42,227 INFO L225 Difference]: With dead ends: 10730 [2021-01-20 12:02:42,227 INFO L226 Difference]: Without dead ends: 10460 [2021-01-20 12:02:42,227 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=506, Invalid=1564, Unknown=0, NotChecked=0, Total=2070 [2021-01-20 12:02:42,228 INFO L78 Accepts]: Start accepts. Automaton has 10460 states. Word has length 101 [2021-01-20 12:02:42,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:42,228 INFO L481 AbstractCegarLoop]: Abstraction has 10460 states. [2021-01-20 12:02:42,228 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) [2021-01-20 12:02:42,228 INFO L276 IsEmpty]: Start isEmpty. Operand 10460 states. [2021-01-20 12:02:42,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-20 12:02:42,236 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:42,236 INFO L504 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] [2021-01-20 12:02:42,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:02:42,437 INFO L429 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:42,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:42,438 INFO L82 PathProgramCache]: Analyzing trace with hash 797378487, now seen corresponding path program 112 times [2021-01-20 12:02:42,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:42,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221188401] [2021-01-20 12:02:42,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:42,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:42,773 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:42,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221188401] [2021-01-20 12:02:42,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301549661] [2021-01-20 12:02:42,773 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 [2021-01-20 12:02:42,848 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:02:42,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:02:42,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-20 12:02:42,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:42,879 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:02:42,926 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:42,940 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:42,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:42,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-01-20 12:02:42,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838710594] [2021-01-20 12:02:42,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-20 12:02:42,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:42,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-20 12:02:42,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2021-01-20 12:02:42,941 INFO L87 Difference]: Start difference. First operand 10460 states. Second operand has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:43,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:43,953 INFO L93 Difference]: Finished difference Result 10780 states and 24140 transitions. [2021-01-20 12:02:43,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-20 12:02:43,954 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:02:43,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:43,966 INFO L225 Difference]: With dead ends: 10780 [2021-01-20 12:02:43,966 INFO L226 Difference]: Without dead ends: 10510 [2021-01-20 12:02:43,967 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=531, Invalid=1725, Unknown=0, NotChecked=0, Total=2256 [2021-01-20 12:02:43,967 INFO L78 Accepts]: Start accepts. Automaton has 10510 states. Word has length 101 [2021-01-20 12:02:43,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:43,967 INFO L481 AbstractCegarLoop]: Abstraction has 10510 states. [2021-01-20 12:02:43,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:43,967 INFO L276 IsEmpty]: Start isEmpty. Operand 10510 states. [2021-01-20 12:02:44,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-20 12:02:44,131 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:44,132 INFO L504 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] [2021-01-20 12:02:44,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2021-01-20 12:02:44,332 INFO L429 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:44,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:44,333 INFO L82 PathProgramCache]: Analyzing trace with hash 624692709, now seen corresponding path program 113 times [2021-01-20 12:02:44,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:44,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49952683] [2021-01-20 12:02:44,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:44,635 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:44,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49952683] [2021-01-20 12:02:44,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722776927] [2021-01-20 12:02:44,635 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 [2021-01-20 12:02:44,714 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-01-20 12:02:44,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:02:44,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-20 12:02:44,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:44,760 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:44,772 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:44,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:44,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-01-20 12:02:44,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754601629] [2021-01-20 12:02:44,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-20 12:02:44,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:44,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-20 12:02:44,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2021-01-20 12:02:44,774 INFO L87 Difference]: Start difference. First operand 10510 states. 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) [2021-01-20 12:02:45,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:45,638 INFO L93 Difference]: Finished difference Result 10830 states and 24240 transitions. [2021-01-20 12:02:45,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-20 12:02:45,638 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 [2021-01-20 12:02:45,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:45,649 INFO L225 Difference]: With dead ends: 10830 [2021-01-20 12:02:45,649 INFO L226 Difference]: Without dead ends: 10560 [2021-01-20 12:02:45,649 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=561, Invalid=1695, Unknown=0, NotChecked=0, Total=2256 [2021-01-20 12:02:45,649 INFO L78 Accepts]: Start accepts. Automaton has 10560 states. Word has length 101 [2021-01-20 12:02:45,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:45,649 INFO L481 AbstractCegarLoop]: Abstraction has 10560 states. [2021-01-20 12:02:45,650 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) [2021-01-20 12:02:45,650 INFO L276 IsEmpty]: Start isEmpty. Operand 10560 states. [2021-01-20 12:02:45,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-20 12:02:45,658 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:45,658 INFO L504 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] [2021-01-20 12:02:45,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2021-01-20 12:02:45,860 INFO L429 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:45,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:45,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1508602699, now seen corresponding path program 114 times [2021-01-20 12:02:45,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:45,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043098943] [2021-01-20 12:02:45,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:45,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:46,174 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:46,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043098943] [2021-01-20 12:02:46,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666940844] [2021-01-20 12:02:46,174 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 [2021-01-20 12:02:46,261 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-01-20 12:02:46,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:02:46,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-20 12:02:46,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:46,292 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:02:46,334 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:46,352 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:46,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:46,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-01-20 12:02:46,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868273320] [2021-01-20 12:02:46,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-20 12:02:46,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:46,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-20 12:02:46,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2021-01-20 12:02:46,354 INFO L87 Difference]: Start difference. First operand 10560 states. Second operand has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:47,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:47,437 INFO L93 Difference]: Finished difference Result 10880 states and 24340 transitions. [2021-01-20 12:02:47,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-01-20 12:02:47,438 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:02:47,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:47,451 INFO L225 Difference]: With dead ends: 10880 [2021-01-20 12:02:47,452 INFO L226 Difference]: Without dead ends: 10610 [2021-01-20 12:02:47,452 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=588, Invalid=1862, Unknown=0, NotChecked=0, Total=2450 [2021-01-20 12:02:47,453 INFO L78 Accepts]: Start accepts. Automaton has 10610 states. Word has length 101 [2021-01-20 12:02:47,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:47,453 INFO L481 AbstractCegarLoop]: Abstraction has 10610 states. [2021-01-20 12:02:47,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:47,453 INFO L276 IsEmpty]: Start isEmpty. Operand 10610 states. [2021-01-20 12:02:47,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-20 12:02:47,466 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:47,466 INFO L504 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] [2021-01-20 12:02:47,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2021-01-20 12:02:47,681 INFO L429 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:47,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:47,681 INFO L82 PathProgramCache]: Analyzing trace with hash 381998179, now seen corresponding path program 115 times [2021-01-20 12:02:47,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:47,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016250674] [2021-01-20 12:02:47,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:47,954 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:47,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016250674] [2021-01-20 12:02:47,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249602940] [2021-01-20 12:02:47,955 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 [2021-01-20 12:02:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:48,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-20 12:02:48,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:48,078 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:48,090 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:48,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:48,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-01-20 12:02:48,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426227201] [2021-01-20 12:02:48,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-20 12:02:48,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:48,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-20 12:02:48,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-01-20 12:02:48,091 INFO L87 Difference]: Start difference. First operand 10610 states. 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) [2021-01-20 12:02:49,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:49,056 INFO L93 Difference]: Finished difference Result 10930 states and 24440 transitions. [2021-01-20 12:02:49,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-20 12:02:49,057 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 [2021-01-20 12:02:49,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:49,067 INFO L225 Difference]: With dead ends: 10930 [2021-01-20 12:02:49,067 INFO L226 Difference]: Without dead ends: 10660 [2021-01-20 12:02:49,067 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=632, Invalid=1818, Unknown=0, NotChecked=0, Total=2450 [2021-01-20 12:02:49,068 INFO L78 Accepts]: Start accepts. Automaton has 10660 states. Word has length 101 [2021-01-20 12:02:49,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:49,068 INFO L481 AbstractCegarLoop]: Abstraction has 10660 states. [2021-01-20 12:02:49,068 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) [2021-01-20 12:02:49,068 INFO L276 IsEmpty]: Start isEmpty. Operand 10660 states. [2021-01-20 12:02:49,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-20 12:02:49,077 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:49,077 INFO L504 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] [2021-01-20 12:02:49,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,121 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:02:49,279 INFO L429 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:49,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:49,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1603704627, now seen corresponding path program 116 times [2021-01-20 12:02:49,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:49,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540978294] [2021-01-20 12:02:49,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:49,587 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:49,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540978294] [2021-01-20 12:02:49,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811435460] [2021-01-20 12:02:49,588 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 [2021-01-20 12:02:49,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:02:49,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:02:49,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-20 12:02:49,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:49,696 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:02:49,740 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:49,752 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:49,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:49,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-01-20 12:02:49,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853393178] [2021-01-20 12:02:49,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-20 12:02:49,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:49,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-20 12:02:49,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2021-01-20 12:02:49,753 INFO L87 Difference]: Start difference. First operand 10660 states. Second operand has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:50,349 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2021-01-20 12:02:51,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:51,102 INFO L93 Difference]: Finished difference Result 10980 states and 24540 transitions. [2021-01-20 12:02:51,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-01-20 12:02:51,102 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:02:51,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:51,113 INFO L225 Difference]: With dead ends: 10980 [2021-01-20 12:02:51,113 INFO L226 Difference]: Without dead ends: 10710 [2021-01-20 12:02:51,113 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=661, Invalid=1991, Unknown=0, NotChecked=0, Total=2652 [2021-01-20 12:02:51,114 INFO L78 Accepts]: Start accepts. Automaton has 10710 states. Word has length 101 [2021-01-20 12:02:51,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:51,114 INFO L481 AbstractCegarLoop]: Abstraction has 10710 states. [2021-01-20 12:02:51,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:51,114 INFO L276 IsEmpty]: Start isEmpty. Operand 10710 states. [2021-01-20 12:02:51,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-20 12:02:51,124 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:51,124 INFO L504 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] [2021-01-20 12:02:51,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2021-01-20 12:02:51,326 INFO L429 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:51,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:51,327 INFO L82 PathProgramCache]: Analyzing trace with hash 513671265, now seen corresponding path program 117 times [2021-01-20 12:02:51,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:51,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845974143] [2021-01-20 12:02:51,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:51,617 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:51,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845974143] [2021-01-20 12:02:51,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394489501] [2021-01-20 12:02:51,617 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 [2021-01-20 12:02:51,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-01-20 12:02:51,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:02:51,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-20 12:02:51,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:51,746 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:51,757 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:51,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:51,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-01-20 12:02:51,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972510738] [2021-01-20 12:02:51,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-20 12:02:51,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:51,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-20 12:02:51,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-01-20 12:02:51,759 INFO L87 Difference]: Start difference. First operand 10710 states. 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) [2021-01-20 12:02:52,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:52,793 INFO L93 Difference]: Finished difference Result 11030 states and 24640 transitions. [2021-01-20 12:02:52,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-01-20 12:02:52,793 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 [2021-01-20 12:02:52,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:52,804 INFO L225 Difference]: With dead ends: 11030 [2021-01-20 12:02:52,805 INFO L226 Difference]: Without dead ends: 10760 [2021-01-20 12:02:52,805 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=719, Invalid=1933, Unknown=0, NotChecked=0, Total=2652 [2021-01-20 12:02:52,805 INFO L78 Accepts]: Start accepts. Automaton has 10760 states. Word has length 101 [2021-01-20 12:02:52,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:52,806 INFO L481 AbstractCegarLoop]: Abstraction has 10760 states. [2021-01-20 12:02:52,806 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) [2021-01-20 12:02:52,806 INFO L276 IsEmpty]: Start isEmpty. Operand 10760 states. [2021-01-20 12:02:52,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-20 12:02:52,815 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:52,815 INFO L504 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] [2021-01-20 12:02:53,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:02:53,016 INFO L429 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:53,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:53,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1433274161, now seen corresponding path program 118 times [2021-01-20 12:02:53,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:53,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156678118] [2021-01-20 12:02:53,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:53,311 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:53,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156678118] [2021-01-20 12:02:53,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203624642] [2021-01-20 12:02:53,311 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 [2021-01-20 12:02:53,389 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:02:53,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:02:53,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-20 12:02:53,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:53,423 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:02:53,467 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:53,478 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:53,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:53,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-01-20 12:02:53,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840887371] [2021-01-20 12:02:53,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-20 12:02:53,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:53,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-20 12:02:53,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2021-01-20 12:02:53,479 INFO L87 Difference]: Start difference. First operand 10760 states. Second operand has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:54,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:54,786 INFO L93 Difference]: Finished difference Result 11120 states and 24820 transitions. [2021-01-20 12:02:54,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-01-20 12:02:54,787 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:02:54,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:54,798 INFO L225 Difference]: With dead ends: 11120 [2021-01-20 12:02:54,798 INFO L226 Difference]: Without dead ends: 10850 [2021-01-20 12:02:54,799 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=750, Invalid=2112, Unknown=0, NotChecked=0, Total=2862 [2021-01-20 12:02:54,799 INFO L78 Accepts]: Start accepts. Automaton has 10850 states. Word has length 101 [2021-01-20 12:02:54,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:54,799 INFO L481 AbstractCegarLoop]: Abstraction has 10850 states. [2021-01-20 12:02:54,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:02:54,799 INFO L276 IsEmpty]: Start isEmpty. Operand 10850 states. [2021-01-20 12:02:54,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-20 12:02:54,807 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:54,808 INFO L504 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] [2021-01-20 12:02:55,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2021-01-20 12:02:55,008 INFO L429 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:55,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:55,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1785350079, now seen corresponding path program 119 times [2021-01-20 12:02:55,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:55,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057410624] [2021-01-20 12:02:55,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:55,297 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:55,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057410624] [2021-01-20 12:02:55,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058258829] [2021-01-20 12:02:55,298 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 [2021-01-20 12:02:55,382 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-01-20 12:02:55,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:02:55,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-20 12:02:55,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:55,430 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:55,441 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:55,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:55,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-01-20 12:02:55,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972414758] [2021-01-20 12:02:55,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-20 12:02:55,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:55,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-20 12:02:55,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-01-20 12:02:55,442 INFO L87 Difference]: Start difference. First operand 10850 states. 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) [2021-01-20 12:02:56,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:56,537 INFO L93 Difference]: Finished difference Result 12322 states and 28184 transitions. [2021-01-20 12:02:56,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-01-20 12:02:56,538 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 [2021-01-20 12:02:56,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:56,550 INFO L225 Difference]: With dead ends: 12322 [2021-01-20 12:02:56,550 INFO L226 Difference]: Without dead ends: 12052 [2021-01-20 12:02:56,550 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=823, Invalid=2039, Unknown=0, NotChecked=0, Total=2862 [2021-01-20 12:02:56,550 INFO L78 Accepts]: Start accepts. Automaton has 12052 states. Word has length 101 [2021-01-20 12:02:56,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:56,551 INFO L481 AbstractCegarLoop]: Abstraction has 12052 states. [2021-01-20 12:02:56,551 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) [2021-01-20 12:02:56,551 INFO L276 IsEmpty]: Start isEmpty. Operand 12052 states. [2021-01-20 12:02:56,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-20 12:02:56,559 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:56,560 INFO L504 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] [2021-01-20 12:02:56,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,125 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:02:56,760 INFO L429 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:56,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:56,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1782376849, now seen corresponding path program 120 times [2021-01-20 12:02:56,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:56,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85839628] [2021-01-20 12:02:56,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:56,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:57,187 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:57,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85839628] [2021-01-20 12:02:57,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023588999] [2021-01-20 12:02:57,188 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 [2021-01-20 12:02:57,270 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-01-20 12:02:57,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:02:57,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-20 12:02:57,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:57,321 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:57,331 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:57,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:57,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-01-20 12:02:57,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349086925] [2021-01-20 12:02:57,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-20 12:02:57,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:57,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-20 12:02:57,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-01-20 12:02:57,332 INFO L87 Difference]: Start difference. First operand 12052 states. 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) [2021-01-20 12:02:58,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:02:58,663 INFO L93 Difference]: Finished difference Result 11604 states and 26026 transitions. [2021-01-20 12:02:58,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-01-20 12:02:58,664 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 [2021-01-20 12:02:58,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:02:58,675 INFO L225 Difference]: With dead ends: 11604 [2021-01-20 12:02:58,675 INFO L226 Difference]: Without dead ends: 11065 [2021-01-20 12:02:58,676 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=770, Invalid=2200, Unknown=0, NotChecked=0, Total=2970 [2021-01-20 12:02:58,676 INFO L78 Accepts]: Start accepts. Automaton has 11065 states. Word has length 101 [2021-01-20 12:02:58,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:02:58,676 INFO L481 AbstractCegarLoop]: Abstraction has 11065 states. [2021-01-20 12:02:58,676 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) [2021-01-20 12:02:58,676 INFO L276 IsEmpty]: Start isEmpty. Operand 11065 states. [2021-01-20 12:02:58,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-20 12:02:58,685 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:02:58,685 INFO L504 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] [2021-01-20 12:02:58,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable131 [2021-01-20 12:02:58,887 INFO L429 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:02:58,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:02:58,888 INFO L82 PathProgramCache]: Analyzing trace with hash -513424225, now seen corresponding path program 121 times [2021-01-20 12:02:58,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:02:58,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799805262] [2021-01-20 12:02:58,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:02:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:59,269 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:59,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799805262] [2021-01-20 12:02:59,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033724780] [2021-01-20 12:02:59,270 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 [2021-01-20 12:02:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:02:59,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-20 12:02:59,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:02:59,391 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:02:59,409 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:02:59,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:02:59,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-01-20 12:02:59,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893610984] [2021-01-20 12:02:59,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-20 12:02:59,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:02:59,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-20 12:02:59,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2021-01-20 12:02:59,410 INFO L87 Difference]: Start difference. First operand 11065 states. 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) [2021-01-20 12:03:00,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:03:00,086 INFO L93 Difference]: Finished difference Result 11385 states and 25450 transitions. [2021-01-20 12:03:00,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-20 12:03:00,087 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 [2021-01-20 12:03:00,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:03:00,099 INFO L225 Difference]: With dead ends: 11385 [2021-01-20 12:03:00,099 INFO L226 Difference]: Without dead ends: 11115 [2021-01-20 12:03:00,099 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=446, Invalid=1194, Unknown=0, NotChecked=0, Total=1640 [2021-01-20 12:03:00,099 INFO L78 Accepts]: Start accepts. Automaton has 11115 states. Word has length 106 [2021-01-20 12:03:00,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:03:00,099 INFO L481 AbstractCegarLoop]: Abstraction has 11115 states. [2021-01-20 12:03:00,099 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) [2021-01-20 12:03:00,100 INFO L276 IsEmpty]: Start isEmpty. Operand 11115 states. [2021-01-20 12:03:00,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-20 12:03:00,109 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:03:00,109 INFO L504 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] [2021-01-20 12:03:00,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,127 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:03:00,310 INFO L429 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:03:00,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:03:00,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1740396047, now seen corresponding path program 122 times [2021-01-20 12:03:00,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:03:00,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176646742] [2021-01-20 12:03:00,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:03:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:00,725 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:00,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176646742] [2021-01-20 12:03:00,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338303027] [2021-01-20 12:03:00,726 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 [2021-01-20 12:03:00,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:03:00,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:03:00,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-20 12:03:00,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:03:00,835 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:03:00,881 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:03:00,898 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:00,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:03:00,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-01-20 12:03:00,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004705359] [2021-01-20 12:03:00,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-20 12:03:00,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:03:00,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-20 12:03:00,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-01-20 12:03:00,899 INFO L87 Difference]: Start difference. First operand 11115 states. 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) [2021-01-20 12:03:01,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:03:01,734 INFO L93 Difference]: Finished difference Result 11435 states and 25550 transitions. [2021-01-20 12:03:01,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-01-20 12:03:01,735 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 [2021-01-20 12:03:01,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:03:01,746 INFO L225 Difference]: With dead ends: 11435 [2021-01-20 12:03:01,747 INFO L226 Difference]: Without dead ends: 11165 [2021-01-20 12:03:01,747 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=507, Invalid=1473, Unknown=0, NotChecked=0, Total=1980 [2021-01-20 12:03:01,747 INFO L78 Accepts]: Start accepts. Automaton has 11165 states. Word has length 106 [2021-01-20 12:03:01,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:03:01,747 INFO L481 AbstractCegarLoop]: Abstraction has 11165 states. [2021-01-20 12:03:01,747 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) [2021-01-20 12:03:01,747 INFO L276 IsEmpty]: Start isEmpty. Operand 11165 states. [2021-01-20 12:03:01,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-20 12:03:01,757 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:03:01,757 INFO L504 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] [2021-01-20 12:03:01,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2021-01-20 12:03:01,957 INFO L429 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:03:01,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:03:01,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1593051787, now seen corresponding path program 123 times [2021-01-20 12:03:01,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:03:01,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303034600] [2021-01-20 12:03:01,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:03:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:02,289 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:02,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303034600] [2021-01-20 12:03:02,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377468944] [2021-01-20 12:03:02,290 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 [2021-01-20 12:03:02,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-01-20 12:03:02,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:03:02,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-20 12:03:02,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:03:02,431 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:03:02,454 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:02,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:03:02,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-01-20 12:03:02,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332692831] [2021-01-20 12:03:02,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-20 12:03:02,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:03:02,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-20 12:03:02,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-01-20 12:03:02,455 INFO L87 Difference]: Start difference. First operand 11165 states. 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) [2021-01-20 12:03:03,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:03:03,389 INFO L93 Difference]: Finished difference Result 11485 states and 25650 transitions. [2021-01-20 12:03:03,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-20 12:03:03,390 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 [2021-01-20 12:03:03,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:03:03,401 INFO L225 Difference]: With dead ends: 11485 [2021-01-20 12:03:03,401 INFO L226 Difference]: Without dead ends: 11215 [2021-01-20 12:03:03,401 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=454, Invalid=1352, Unknown=0, NotChecked=0, Total=1806 [2021-01-20 12:03:03,401 INFO L78 Accepts]: Start accepts. Automaton has 11215 states. Word has length 106 [2021-01-20 12:03:03,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:03:03,401 INFO L481 AbstractCegarLoop]: Abstraction has 11215 states. [2021-01-20 12:03:03,402 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) [2021-01-20 12:03:03,402 INFO L276 IsEmpty]: Start isEmpty. Operand 11215 states. [2021-01-20 12:03:03,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-20 12:03:03,410 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:03:03,410 INFO L504 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] [2021-01-20 12:03:03,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2021-01-20 12:03:03,612 INFO L429 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:03:03,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:03:03,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1702804827, now seen corresponding path program 124 times [2021-01-20 12:03:03,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:03:03,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238189676] [2021-01-20 12:03:03,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:03:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:04,005 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:04,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238189676] [2021-01-20 12:03:04,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135036879] [2021-01-20 12:03:04,005 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 [2021-01-20 12:03:04,085 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:03:04,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:03:04,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-20 12:03:04,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:03:04,115 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:03:04,168 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:03:04,184 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:04,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:03:04,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-01-20 12:03:04,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439975949] [2021-01-20 12:03:04,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-20 12:03:04,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:03:04,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-20 12:03:04,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2021-01-20 12:03:04,185 INFO L87 Difference]: Start difference. First operand 11215 states. 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) [2021-01-20 12:03:05,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:03:05,127 INFO L93 Difference]: Finished difference Result 11535 states and 25750 transitions. [2021-01-20 12:03:05,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-20 12:03:05,127 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 [2021-01-20 12:03:05,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:03:05,139 INFO L225 Difference]: With dead ends: 11535 [2021-01-20 12:03:05,139 INFO L226 Difference]: Without dead ends: 11265 [2021-01-20 12:03:05,139 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=523, Invalid=1639, Unknown=0, NotChecked=0, Total=2162 [2021-01-20 12:03:05,140 INFO L78 Accepts]: Start accepts. Automaton has 11265 states. Word has length 106 [2021-01-20 12:03:05,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:03:05,140 INFO L481 AbstractCegarLoop]: Abstraction has 11265 states. [2021-01-20 12:03:05,140 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) [2021-01-20 12:03:05,140 INFO L276 IsEmpty]: Start isEmpty. Operand 11265 states. [2021-01-20 12:03:05,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-20 12:03:05,149 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:03:05,149 INFO L504 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] [2021-01-20 12:03:05,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2021-01-20 12:03:05,363 INFO L429 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:03:05,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:03:05,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1206968457, now seen corresponding path program 125 times [2021-01-20 12:03:05,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:03:05,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114838378] [2021-01-20 12:03:05,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:03:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:05,717 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:05,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114838378] [2021-01-20 12:03:05,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642213689] [2021-01-20 12:03:05,718 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 [2021-01-20 12:03:05,799 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-01-20 12:03:05,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:03:05,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-20 12:03:05,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:03:05,845 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:03:05,861 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:05,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:03:05,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-01-20 12:03:05,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087531068] [2021-01-20 12:03:05,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-20 12:03:05,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:03:05,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-20 12:03:05,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-01-20 12:03:05,863 INFO L87 Difference]: Start difference. First operand 11265 states. 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) [2021-01-20 12:03:06,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:03:06,726 INFO L93 Difference]: Finished difference Result 11585 states and 25850 transitions. [2021-01-20 12:03:06,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-20 12:03:06,727 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 [2021-01-20 12:03:06,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:03:06,738 INFO L225 Difference]: With dead ends: 11585 [2021-01-20 12:03:06,739 INFO L226 Difference]: Without dead ends: 11315 [2021-01-20 12:03:06,739 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=478, Invalid=1502, Unknown=0, NotChecked=0, Total=1980 [2021-01-20 12:03:06,739 INFO L78 Accepts]: Start accepts. Automaton has 11315 states. Word has length 106 [2021-01-20 12:03:06,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:03:06,739 INFO L481 AbstractCegarLoop]: Abstraction has 11315 states. [2021-01-20 12:03:06,739 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) [2021-01-20 12:03:06,739 INFO L276 IsEmpty]: Start isEmpty. Operand 11315 states. [2021-01-20 12:03:06,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-20 12:03:06,749 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:03:06,749 INFO L504 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] [2021-01-20 12:03:06,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:03:06,950 INFO L429 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:03:06,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:03:06,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1910888281, now seen corresponding path program 126 times [2021-01-20 12:03:06,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:03:06,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329511429] [2021-01-20 12:03:06,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:03:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:07,325 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:07,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329511429] [2021-01-20 12:03:07,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579768782] [2021-01-20 12:03:07,325 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 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 [2021-01-20 12:03:07,420 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-01-20 12:03:07,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:03:07,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-20 12:03:07,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:03:07,458 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:03:07,505 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:03:07,520 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:07,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:03:07,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-01-20 12:03:07,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777969576] [2021-01-20 12:03:07,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-20 12:03:07,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:03:07,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-20 12:03:07,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2021-01-20 12:03:07,521 INFO L87 Difference]: Start difference. First operand 11315 states. 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) [2021-01-20 12:03:08,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:03:08,611 INFO L93 Difference]: Finished difference Result 11635 states and 25950 transitions. [2021-01-20 12:03:08,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-20 12:03:08,611 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 [2021-01-20 12:03:08,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:03:08,623 INFO L225 Difference]: With dead ends: 11635 [2021-01-20 12:03:08,623 INFO L226 Difference]: Without dead ends: 11365 [2021-01-20 12:03:08,624 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=555, Invalid=1797, Unknown=0, NotChecked=0, Total=2352 [2021-01-20 12:03:08,624 INFO L78 Accepts]: Start accepts. Automaton has 11365 states. Word has length 106 [2021-01-20 12:03:08,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:03:08,624 INFO L481 AbstractCegarLoop]: Abstraction has 11365 states. [2021-01-20 12:03:08,624 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) [2021-01-20 12:03:08,624 INFO L276 IsEmpty]: Start isEmpty. Operand 11365 states. [2021-01-20 12:03:08,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-20 12:03:08,633 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:03:08,633 INFO L504 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] [2021-01-20 12:03:08,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,132 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:03:08,834 INFO L429 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:03:08,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:03:08,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1499235321, now seen corresponding path program 127 times [2021-01-20 12:03:08,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:03:08,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006323089] [2021-01-20 12:03:08,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:03:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:09,403 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:09,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006323089] [2021-01-20 12:03:09,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939846530] [2021-01-20 12:03:09,404 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 [2021-01-20 12:03:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:09,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-20 12:03:09,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:03:09,535 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:03:09,556 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:09,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:03:09,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-01-20 12:03:09,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150800540] [2021-01-20 12:03:09,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-20 12:03:09,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:03:09,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-20 12:03:09,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2021-01-20 12:03:09,557 INFO L87 Difference]: Start difference. First operand 11365 states. 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) [2021-01-20 12:03:10,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:03:10,501 INFO L93 Difference]: Finished difference Result 11685 states and 26050 transitions. [2021-01-20 12:03:10,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-20 12:03:10,502 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 [2021-01-20 12:03:10,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:03:10,514 INFO L225 Difference]: With dead ends: 11685 [2021-01-20 12:03:10,514 INFO L226 Difference]: Without dead ends: 11415 [2021-01-20 12:03:10,515 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=518, Invalid=1644, Unknown=0, NotChecked=0, Total=2162 [2021-01-20 12:03:10,515 INFO L78 Accepts]: Start accepts. Automaton has 11415 states. Word has length 106 [2021-01-20 12:03:10,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:03:10,515 INFO L481 AbstractCegarLoop]: Abstraction has 11415 states. [2021-01-20 12:03:10,515 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) [2021-01-20 12:03:10,515 INFO L276 IsEmpty]: Start isEmpty. Operand 11415 states. [2021-01-20 12:03:10,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-20 12:03:10,524 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:03:10,524 INFO L504 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] [2021-01-20 12:03:10,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2021-01-20 12:03:10,725 INFO L429 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:03:10,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:03:10,726 INFO L82 PathProgramCache]: Analyzing trace with hash -2092452137, now seen corresponding path program 128 times [2021-01-20 12:03:10,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:03:10,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509187823] [2021-01-20 12:03:10,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:03:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:11,057 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:11,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509187823] [2021-01-20 12:03:11,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867657499] [2021-01-20 12:03:11,057 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 [2021-01-20 12:03:11,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:03:11,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:03:11,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-20 12:03:11,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:03:11,170 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:03:11,218 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:03:11,232 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:11,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:03:11,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-01-20 12:03:11,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613572247] [2021-01-20 12:03:11,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-20 12:03:11,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:03:11,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-20 12:03:11,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2021-01-20 12:03:11,233 INFO L87 Difference]: Start difference. First operand 11415 states. 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) [2021-01-20 12:03:12,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:03:12,446 INFO L93 Difference]: Finished difference Result 11735 states and 26150 transitions. [2021-01-20 12:03:12,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-01-20 12:03:12,447 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 [2021-01-20 12:03:12,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:03:12,458 INFO L225 Difference]: With dead ends: 11735 [2021-01-20 12:03:12,458 INFO L226 Difference]: Without dead ends: 11465 [2021-01-20 12:03:12,459 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=603, Invalid=1947, Unknown=0, NotChecked=0, Total=2550 [2021-01-20 12:03:12,459 INFO L78 Accepts]: Start accepts. Automaton has 11465 states. Word has length 106 [2021-01-20 12:03:12,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:03:12,459 INFO L481 AbstractCegarLoop]: Abstraction has 11465 states. [2021-01-20 12:03:12,459 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) [2021-01-20 12:03:12,459 INFO L276 IsEmpty]: Start isEmpty. Operand 11465 states. [2021-01-20 12:03:12,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-20 12:03:12,468 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:03:12,468 INFO L504 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] [2021-01-20 12:03:12,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2021-01-20 12:03:12,669 INFO L429 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:03:12,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:03:12,670 INFO L82 PathProgramCache]: Analyzing trace with hash 2029829381, now seen corresponding path program 129 times [2021-01-20 12:03:12,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:03:12,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801124371] [2021-01-20 12:03:12,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:03:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:12,997 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:12,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801124371] [2021-01-20 12:03:12,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952542103] [2021-01-20 12:03:12,998 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 [2021-01-20 12:03:13,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-01-20 12:03:13,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:03:13,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-20 12:03:13,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:03:13,132 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:03:13,145 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:13,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:03:13,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-01-20 12:03:13,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457617887] [2021-01-20 12:03:13,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-20 12:03:13,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:03:13,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-20 12:03:13,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2021-01-20 12:03:13,147 INFO L87 Difference]: Start difference. First operand 11465 states. 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) [2021-01-20 12:03:14,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:03:14,179 INFO L93 Difference]: Finished difference Result 11785 states and 26250 transitions. [2021-01-20 12:03:14,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-20 12:03:14,179 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 [2021-01-20 12:03:14,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:03:14,191 INFO L225 Difference]: With dead ends: 11785 [2021-01-20 12:03:14,191 INFO L226 Difference]: Without dead ends: 11515 [2021-01-20 12:03:14,191 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=574, Invalid=1778, Unknown=0, NotChecked=0, Total=2352 [2021-01-20 12:03:14,191 INFO L78 Accepts]: Start accepts. Automaton has 11515 states. Word has length 106 [2021-01-20 12:03:14,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:03:14,192 INFO L481 AbstractCegarLoop]: Abstraction has 11515 states. [2021-01-20 12:03:14,192 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) [2021-01-20 12:03:14,192 INFO L276 IsEmpty]: Start isEmpty. Operand 11515 states. [2021-01-20 12:03:14,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-20 12:03:14,201 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:03:14,202 INFO L504 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] [2021-01-20 12:03:14,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:03:14,402 INFO L429 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:03:14,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:03:14,403 INFO L82 PathProgramCache]: Analyzing trace with hash -103466027, now seen corresponding path program 130 times [2021-01-20 12:03:14,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:03:14,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449994497] [2021-01-20 12:03:14,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:03:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:14,747 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:14,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449994497] [2021-01-20 12:03:14,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628131076] [2021-01-20 12:03:14,747 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 [2021-01-20 12:03:14,824 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:03:14,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:03:14,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-20 12:03:14,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:03:14,856 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:03:14,902 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:03:14,915 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:14,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:03:14,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-01-20 12:03:14,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563795018] [2021-01-20 12:03:14,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-20 12:03:14,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:03:14,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-20 12:03:14,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2021-01-20 12:03:14,917 INFO L87 Difference]: Start difference. First operand 11515 states. 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) [2021-01-20 12:03:16,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:03:16,480 INFO L93 Difference]: Finished difference Result 11835 states and 26350 transitions. [2021-01-20 12:03:16,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-01-20 12:03:16,481 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 [2021-01-20 12:03:16,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:03:16,493 INFO L225 Difference]: With dead ends: 11835 [2021-01-20 12:03:16,493 INFO L226 Difference]: Without dead ends: 11565 [2021-01-20 12:03:16,493 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=667, Invalid=2089, Unknown=0, NotChecked=0, Total=2756 [2021-01-20 12:03:16,493 INFO L78 Accepts]: Start accepts. Automaton has 11565 states. Word has length 106 [2021-01-20 12:03:16,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:03:16,494 INFO L481 AbstractCegarLoop]: Abstraction has 11565 states. [2021-01-20 12:03:16,494 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) [2021-01-20 12:03:16,494 INFO L276 IsEmpty]: Start isEmpty. Operand 11565 states. [2021-01-20 12:03:16,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-20 12:03:16,505 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:03:16,506 INFO L504 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] [2021-01-20 12:03:16,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,136 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:03:16,706 INFO L429 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:03:16,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:03:16,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1787134851, now seen corresponding path program 131 times [2021-01-20 12:03:16,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:03:16,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31159754] [2021-01-20 12:03:16,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:03:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:17,060 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:17,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31159754] [2021-01-20 12:03:17,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505820367] [2021-01-20 12:03:17,060 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 [2021-01-20 12:03:17,152 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-01-20 12:03:17,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:03:17,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-20 12:03:17,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:03:17,207 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:03:17,226 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:17,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:03:17,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-01-20 12:03:17,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555802820] [2021-01-20 12:03:17,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-20 12:03:17,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:03:17,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-20 12:03:17,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-01-20 12:03:17,227 INFO L87 Difference]: Start difference. First operand 11565 states. 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) [2021-01-20 12:03:18,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:03:18,364 INFO L93 Difference]: Finished difference Result 11885 states and 26450 transitions. [2021-01-20 12:03:18,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-20 12:03:18,365 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 [2021-01-20 12:03:18,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:03:18,378 INFO L225 Difference]: With dead ends: 11885 [2021-01-20 12:03:18,378 INFO L226 Difference]: Without dead ends: 11615 [2021-01-20 12:03:18,378 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=646, Invalid=1904, Unknown=0, NotChecked=0, Total=2550 [2021-01-20 12:03:18,379 INFO L78 Accepts]: Start accepts. Automaton has 11615 states. Word has length 106 [2021-01-20 12:03:18,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:03:18,379 INFO L481 AbstractCegarLoop]: Abstraction has 11615 states. [2021-01-20 12:03:18,379 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) [2021-01-20 12:03:18,379 INFO L276 IsEmpty]: Start isEmpty. Operand 11615 states. [2021-01-20 12:03:18,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-20 12:03:18,391 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:03:18,391 INFO L504 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] [2021-01-20 12:03:18,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:03:18,592 INFO L429 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:03:18,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:03:18,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1286125997, now seen corresponding path program 132 times [2021-01-20 12:03:18,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:03:18,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178317381] [2021-01-20 12:03:18,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:03:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:18,967 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:18,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178317381] [2021-01-20 12:03:18,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278538772] [2021-01-20 12:03:18,968 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 [2021-01-20 12:03:19,052 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-01-20 12:03:19,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:03:19,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-20 12:03:19,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:03:19,137 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:03:19,159 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:19,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:03:19,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-01-20 12:03:19,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22777628] [2021-01-20 12:03:19,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-20 12:03:19,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:03:19,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-20 12:03:19,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2021-01-20 12:03:19,161 INFO L87 Difference]: Start difference. First operand 11615 states. 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) [2021-01-20 12:03:20,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:03:20,438 INFO L93 Difference]: Finished difference Result 11935 states and 26550 transitions. [2021-01-20 12:03:20,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-01-20 12:03:20,438 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 [2021-01-20 12:03:20,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:03:20,450 INFO L225 Difference]: With dead ends: 11935 [2021-01-20 12:03:20,450 INFO L226 Difference]: Without dead ends: 11665 [2021-01-20 12:03:20,451 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=639, Invalid=2117, Unknown=0, NotChecked=0, Total=2756 [2021-01-20 12:03:20,451 INFO L78 Accepts]: Start accepts. Automaton has 11665 states. Word has length 106 [2021-01-20 12:03:20,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:03:20,451 INFO L481 AbstractCegarLoop]: Abstraction has 11665 states. [2021-01-20 12:03:20,451 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) [2021-01-20 12:03:20,451 INFO L276 IsEmpty]: Start isEmpty. Operand 11665 states. [2021-01-20 12:03:20,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-20 12:03:20,460 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:03:20,460 INFO L504 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] [2021-01-20 12:03:20,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable143 [2021-01-20 12:03:20,661 INFO L429 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:03:20,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:03:20,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1918807937, now seen corresponding path program 133 times [2021-01-20 12:03:20,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:03:20,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113985263] [2021-01-20 12:03:20,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:03:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:20,980 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:20,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113985263] [2021-01-20 12:03:20,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747735520] [2021-01-20 12:03:20,980 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 [2021-01-20 12:03:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:21,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-20 12:03:21,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:03:21,109 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:03:21,121 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:21,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:03:21,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-01-20 12:03:21,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65482971] [2021-01-20 12:03:21,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-20 12:03:21,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:03:21,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-20 12:03:21,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-01-20 12:03:21,122 INFO L87 Difference]: Start difference. First operand 11665 states. 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) [2021-01-20 12:03:22,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:03:22,402 INFO L93 Difference]: Finished difference Result 11985 states and 26650 transitions. [2021-01-20 12:03:22,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-01-20 12:03:22,403 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 [2021-01-20 12:03:22,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:03:22,414 INFO L225 Difference]: With dead ends: 11985 [2021-01-20 12:03:22,414 INFO L226 Difference]: Without dead ends: 11715 [2021-01-20 12:03:22,414 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=734, Invalid=2022, Unknown=0, NotChecked=0, Total=2756 [2021-01-20 12:03:22,414 INFO L78 Accepts]: Start accepts. Automaton has 11715 states. Word has length 106 [2021-01-20 12:03:22,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:03:22,415 INFO L481 AbstractCegarLoop]: Abstraction has 11715 states. [2021-01-20 12:03:22,415 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) [2021-01-20 12:03:22,415 INFO L276 IsEmpty]: Start isEmpty. Operand 11715 states. [2021-01-20 12:03:22,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-20 12:03:22,423 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:03:22,423 INFO L504 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] [2021-01-20 12:03:22,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2021-01-20 12:03:22,624 INFO L429 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:03:22,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:03:22,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1456556463, now seen corresponding path program 134 times [2021-01-20 12:03:22,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:03:22,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986181378] [2021-01-20 12:03:22,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:03:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:22,922 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:22,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986181378] [2021-01-20 12:03:22,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200779375] [2021-01-20 12:03:22,923 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 [2021-01-20 12:03:23,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:03:23,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:03:23,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-20 12:03:23,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:03:23,049 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:03:23,090 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:03:23,103 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:23,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:03:23,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-01-20 12:03:23,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123603407] [2021-01-20 12:03:23,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-20 12:03:23,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:03:23,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-20 12:03:23,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2021-01-20 12:03:23,105 INFO L87 Difference]: Start difference. First operand 11715 states. 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) [2021-01-20 12:03:24,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:03:24,526 INFO L93 Difference]: Finished difference Result 12075 states and 26830 transitions. [2021-01-20 12:03:24,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-01-20 12:03:24,527 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 [2021-01-20 12:03:24,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:03:24,539 INFO L225 Difference]: With dead ends: 12075 [2021-01-20 12:03:24,540 INFO L226 Difference]: Without dead ends: 11805 [2021-01-20 12:03:24,540 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=843, Invalid=2349, Unknown=0, NotChecked=0, Total=3192 [2021-01-20 12:03:24,541 INFO L78 Accepts]: Start accepts. Automaton has 11805 states. Word has length 106 [2021-01-20 12:03:24,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:03:24,541 INFO L481 AbstractCegarLoop]: Abstraction has 11805 states. [2021-01-20 12:03:24,541 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) [2021-01-20 12:03:24,541 INFO L276 IsEmpty]: Start isEmpty. Operand 11805 states. [2021-01-20 12:03:24,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-20 12:03:24,552 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:03:24,552 INFO L504 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] [2021-01-20 12:03:24,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2021-01-20 12:03:24,752 INFO L429 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:03:24,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:03:24,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1104480545, now seen corresponding path program 135 times [2021-01-20 12:03:24,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:03:24,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041659422] [2021-01-20 12:03:24,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:03:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:25,069 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:25,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041659422] [2021-01-20 12:03:25,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426027781] [2021-01-20 12:03:25,069 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 [2021-01-20 12:03:25,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-01-20 12:03:25,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:03:25,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-20 12:03:25,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:03:25,207 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:03:25,217 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:25,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:03:25,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-01-20 12:03:25,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543466848] [2021-01-20 12:03:25,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-20 12:03:25,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:03:25,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-20 12:03:25,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-01-20 12:03:25,219 INFO L87 Difference]: Start difference. First operand 11805 states. 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) [2021-01-20 12:03:26,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:03:26,438 INFO L93 Difference]: Finished difference Result 13277 states and 30194 transitions. [2021-01-20 12:03:26,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-01-20 12:03:26,439 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 [2021-01-20 12:03:26,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:03:26,451 INFO L225 Difference]: With dead ends: 13277 [2021-01-20 12:03:26,452 INFO L226 Difference]: Without dead ends: 13007 [2021-01-20 12:03:26,452 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=839, Invalid=2131, Unknown=0, NotChecked=0, Total=2970 [2021-01-20 12:03:26,452 INFO L78 Accepts]: Start accepts. Automaton has 13007 states. Word has length 106 [2021-01-20 12:03:26,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:03:26,452 INFO L481 AbstractCegarLoop]: Abstraction has 13007 states. [2021-01-20 12:03:26,452 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) [2021-01-20 12:03:26,452 INFO L276 IsEmpty]: Start isEmpty. Operand 13007 states. [2021-01-20 12:03:26,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-20 12:03:26,461 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:03:26,462 INFO L504 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] [2021-01-20 12:03:26,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2021-01-20 12:03:26,662 INFO L429 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:03:26,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:03:26,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1107453775, now seen corresponding path program 136 times [2021-01-20 12:03:26,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:03:26,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102811933] [2021-01-20 12:03:26,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:03:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:26,976 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:26,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102811933] [2021-01-20 12:03:26,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668645469] [2021-01-20 12:03:26,977 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 [2021-01-20 12:03:27,057 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:03:27,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:03:27,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-20 12:03:27,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:03:27,091 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:03:27,111 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:03:27,122 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:27,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:03:27,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-01-20 12:03:27,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479359479] [2021-01-20 12:03:27,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-20 12:03:27,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:03:27,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-20 12:03:27,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-01-20 12:03:27,123 INFO L87 Difference]: Start difference. First operand 13007 states. 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) [2021-01-20 12:03:28,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:03:28,802 INFO L93 Difference]: Finished difference Result 12559 states and 28036 transitions. [2021-01-20 12:03:28,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-01-20 12:03:28,802 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 [2021-01-20 12:03:28,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:03:28,813 INFO L225 Difference]: With dead ends: 12559 [2021-01-20 12:03:28,813 INFO L226 Difference]: Without dead ends: 12020 [2021-01-20 12:03:28,813 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=935, Invalid=2371, Unknown=0, NotChecked=0, Total=3306 [2021-01-20 12:03:28,813 INFO L78 Accepts]: Start accepts. Automaton has 12020 states. Word has length 106 [2021-01-20 12:03:28,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:03:28,814 INFO L481 AbstractCegarLoop]: Abstraction has 12020 states. [2021-01-20 12:03:28,814 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) [2021-01-20 12:03:28,814 INFO L276 IsEmpty]: Start isEmpty. Operand 12020 states. [2021-01-20 12:03:28,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-20 12:03:28,823 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:03:28,823 INFO L504 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] [2021-01-20 12:03:29,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2021-01-20 12:03:29,024 INFO L429 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:03:29,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:03:29,024 INFO L82 PathProgramCache]: Analyzing trace with hash -485429072, now seen corresponding path program 137 times [2021-01-20 12:03:29,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:03:29,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497701348] [2021-01-20 12:03:29,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:03:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:29,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497701348] [2021-01-20 12:03:29,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918962515] [2021-01-20 12:03:29,444 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 [2021-01-20 12:03:29,526 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-01-20 12:03:29,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:03:29,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-20 12:03:29,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:03:29,540 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:03:29,558 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:29,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:03:29,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-01-20 12:03:29,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239987013] [2021-01-20 12:03:29,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-20 12:03:29,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:03:29,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-20 12:03:29,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2021-01-20 12:03:29,559 INFO L87 Difference]: Start difference. First operand 12020 states. 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) [2021-01-20 12:03:30,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:03:30,268 INFO L93 Difference]: Finished difference Result 12340 states and 27460 transitions. [2021-01-20 12:03:30,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-20 12:03:30,268 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 [2021-01-20 12:03:30,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:03:30,280 INFO L225 Difference]: With dead ends: 12340 [2021-01-20 12:03:30,280 INFO L226 Difference]: Without dead ends: 12070 [2021-01-20 12:03:30,280 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=466, Invalid=1174, Unknown=0, NotChecked=0, Total=1640 [2021-01-20 12:03:30,280 INFO L78 Accepts]: Start accepts. Automaton has 12070 states. Word has length 111 [2021-01-20 12:03:30,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:03:30,281 INFO L481 AbstractCegarLoop]: Abstraction has 12070 states. [2021-01-20 12:03:30,281 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) [2021-01-20 12:03:30,281 INFO L276 IsEmpty]: Start isEmpty. Operand 12070 states. [2021-01-20 12:03:30,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-20 12:03:30,291 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:03:30,291 INFO L504 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] [2021-01-20 12:03:30,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2021-01-20 12:03:30,492 INFO L429 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:03:30,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:03:30,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1361717374, now seen corresponding path program 138 times [2021-01-20 12:03:30,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:03:30,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440818471] [2021-01-20 12:03:30,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:03:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:30,939 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:30,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440818471] [2021-01-20 12:03:30,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319483216] [2021-01-20 12:03:30,939 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 [2021-01-20 12:03:31,024 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-01-20 12:03:31,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:03:31,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-20 12:03:31,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:03:31,055 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:03:31,070 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:03:31,088 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:31,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:03:31,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-01-20 12:03:31,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435505251] [2021-01-20 12:03:31,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-20 12:03:31,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:03:31,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-20 12:03:31,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2021-01-20 12:03:31,089 INFO L87 Difference]: Start difference. First operand 12070 states. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:03:31,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:03:31,904 INFO L93 Difference]: Finished difference Result 12390 states and 27560 transitions. [2021-01-20 12:03:31,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-20 12:03:31,904 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:03:31,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:03:31,916 INFO L225 Difference]: With dead ends: 12390 [2021-01-20 12:03:31,916 INFO L226 Difference]: Without dead ends: 12120 [2021-01-20 12:03:31,916 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=489, Invalid=1403, Unknown=0, NotChecked=0, Total=1892 [2021-01-20 12:03:31,917 INFO L78 Accepts]: Start accepts. Automaton has 12120 states. Word has length 111 [2021-01-20 12:03:31,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:03:31,917 INFO L481 AbstractCegarLoop]: Abstraction has 12120 states. [2021-01-20 12:03:31,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:03:31,917 INFO L276 IsEmpty]: Start isEmpty. Operand 12120 states. [2021-01-20 12:03:31,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-20 12:03:31,927 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:03:31,927 INFO L504 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] [2021-01-20 12:03:32,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,144 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:03:32,128 INFO L429 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:03:32,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:03:32,128 INFO L82 PathProgramCache]: Analyzing trace with hash 773963676, now seen corresponding path program 139 times [2021-01-20 12:03:32,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:03:32,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876403852] [2021-01-20 12:03:32,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:03:32,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:32,540 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:32,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876403852] [2021-01-20 12:03:32,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361547228] [2021-01-20 12:03:32,541 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 [2021-01-20 12:03:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:32,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-20 12:03:32,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:03:32,645 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:03:32,670 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:32,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:03:32,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-01-20 12:03:32,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314349518] [2021-01-20 12:03:32,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-20 12:03:32,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:03:32,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-20 12:03:32,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-01-20 12:03:32,672 INFO L87 Difference]: Start difference. First operand 12120 states. 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) [2021-01-20 12:03:33,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:03:33,512 INFO L93 Difference]: Finished difference Result 12440 states and 27660 transitions. [2021-01-20 12:03:33,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-01-20 12:03:33,513 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 [2021-01-20 12:03:33,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:03:33,524 INFO L225 Difference]: With dead ends: 12440 [2021-01-20 12:03:33,524 INFO L226 Difference]: Without dead ends: 12170 [2021-01-20 12:03:33,524 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=479, Invalid=1413, Unknown=0, NotChecked=0, Total=1892 [2021-01-20 12:03:33,524 INFO L78 Accepts]: Start accepts. Automaton has 12170 states. Word has length 111 [2021-01-20 12:03:33,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:03:33,525 INFO L481 AbstractCegarLoop]: Abstraction has 12170 states. [2021-01-20 12:03:33,525 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) [2021-01-20 12:03:33,525 INFO L276 IsEmpty]: Start isEmpty. Operand 12170 states. [2021-01-20 12:03:33,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-20 12:03:33,535 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:03:33,535 INFO L504 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] [2021-01-20 12:03:33,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable150 [2021-01-20 12:03:33,741 INFO L429 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:03:33,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:03:33,741 INFO L82 PathProgramCache]: Analyzing trace with hash 239545964, now seen corresponding path program 140 times [2021-01-20 12:03:33,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:03:33,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342101431] [2021-01-20 12:03:33,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:03:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:34,177 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:34,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342101431] [2021-01-20 12:03:34,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092356953] [2021-01-20 12:03:34,178 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 [2021-01-20 12:03:34,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:03:34,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:03:34,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-20 12:03:34,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:03:34,506 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:03:34,522 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:03:34,540 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:34,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:03:34,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-01-20 12:03:34,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585912855] [2021-01-20 12:03:34,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-20 12:03:34,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:03:34,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-20 12:03:34,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2021-01-20 12:03:34,541 INFO L87 Difference]: Start difference. First operand 12170 states. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:03:35,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:03:35,499 INFO L93 Difference]: Finished difference Result 12540 states and 27860 transitions. [2021-01-20 12:03:35,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-20 12:03:35,499 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:03:35,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:03:35,512 INFO L225 Difference]: With dead ends: 12540 [2021-01-20 12:03:35,512 INFO L226 Difference]: Without dead ends: 12270 [2021-01-20 12:03:35,512 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=529, Invalid=1633, Unknown=0, NotChecked=0, Total=2162 [2021-01-20 12:03:35,513 INFO L78 Accepts]: Start accepts. Automaton has 12270 states. Word has length 111 [2021-01-20 12:03:35,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:03:35,513 INFO L481 AbstractCegarLoop]: Abstraction has 12270 states. [2021-01-20 12:03:35,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:03:35,513 INFO L276 IsEmpty]: Start isEmpty. Operand 12270 states. [2021-01-20 12:03:35,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-20 12:03:35,523 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:03:35,523 INFO L504 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] [2021-01-20 12:03:35,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,146 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:03:35,724 INFO L429 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:03:35,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:03:35,724 INFO L82 PathProgramCache]: Analyzing trace with hash 264351770, now seen corresponding path program 141 times [2021-01-20 12:03:35,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:03:35,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516680984] [2021-01-20 12:03:35,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:03:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:36,121 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:36,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516680984] [2021-01-20 12:03:36,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673094330] [2021-01-20 12:03:36,122 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 [2021-01-20 12:03:36,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-01-20 12:03:36,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:03:36,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 36 conjunts are in the unsatisfiable core [2021-01-20 12:03:36,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:03:36,229 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:03:36,246 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:36,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:03:36,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-01-20 12:03:36,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989104221] [2021-01-20 12:03:36,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-20 12:03:36,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:03:36,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-20 12:03:36,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-01-20 12:03:36,247 INFO L87 Difference]: Start difference. First operand 12270 states. 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) [2021-01-20 12:03:37,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:03:37,138 INFO L93 Difference]: Finished difference Result 12590 states and 27960 transitions. [2021-01-20 12:03:37,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-20 12:03:37,139 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 [2021-01-20 12:03:37,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:03:37,152 INFO L225 Difference]: With dead ends: 12590 [2021-01-20 12:03:37,152 INFO L226 Difference]: Without dead ends: 12320 [2021-01-20 12:03:37,152 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=531, Invalid=1631, Unknown=0, NotChecked=0, Total=2162 [2021-01-20 12:03:37,152 INFO L78 Accepts]: Start accepts. Automaton has 12320 states. Word has length 111 [2021-01-20 12:03:37,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:03:37,153 INFO L481 AbstractCegarLoop]: Abstraction has 12320 states. [2021-01-20 12:03:37,153 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) [2021-01-20 12:03:37,153 INFO L276 IsEmpty]: Start isEmpty. Operand 12320 states. [2021-01-20 12:03:37,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-20 12:03:37,163 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:03:37,163 INFO L504 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] [2021-01-20 12:03:37,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,147 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:03:37,363 INFO L429 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:03:37,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:03:37,364 INFO L82 PathProgramCache]: Analyzing trace with hash 374104810, now seen corresponding path program 142 times [2021-01-20 12:03:37,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:03:37,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445104620] [2021-01-20 12:03:37,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:03:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:37,786 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:37,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445104620] [2021-01-20 12:03:37,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766424562] [2021-01-20 12:03:37,786 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 [2021-01-20 12:03:37,865 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:03:37,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:03:37,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-20 12:03:37,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:03:37,899 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:03:37,916 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:03:37,932 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:37,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:03:37,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-01-20 12:03:37,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094722441] [2021-01-20 12:03:37,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-20 12:03:37,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:03:37,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-20 12:03:37,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-01-20 12:03:37,934 INFO L87 Difference]: Start difference. First operand 12320 states. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:03:38,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:03:38,974 INFO L93 Difference]: Finished difference Result 12640 states and 28060 transitions. [2021-01-20 12:03:38,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-20 12:03:38,975 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:03:38,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:03:38,987 INFO L225 Difference]: With dead ends: 12640 [2021-01-20 12:03:38,987 INFO L226 Difference]: Without dead ends: 12370 [2021-01-20 12:03:38,988 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=553, Invalid=1799, Unknown=0, NotChecked=0, Total=2352 [2021-01-20 12:03:38,988 INFO L78 Accepts]: Start accepts. Automaton has 12370 states. Word has length 111 [2021-01-20 12:03:38,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:03:38,988 INFO L481 AbstractCegarLoop]: Abstraction has 12370 states. [2021-01-20 12:03:38,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:03:38,988 INFO L276 IsEmpty]: Start isEmpty. Operand 12370 states. [2021-01-20 12:03:38,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-20 12:03:38,998 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:03:38,998 INFO L504 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] [2021-01-20 12:03:39,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:03:39,199 INFO L429 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:03:39,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:03:39,200 INFO L82 PathProgramCache]: Analyzing trace with hash -121731560, now seen corresponding path program 143 times [2021-01-20 12:03:39,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:03:39,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114140109] [2021-01-20 12:03:39,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:03:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:39,575 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:39,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114140109] [2021-01-20 12:03:39,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544673168] [2021-01-20 12:03:39,575 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 [2021-01-20 12:03:39,658 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-01-20 12:03:39,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:03:39,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-20 12:03:39,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:03:39,679 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:03:39,695 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:39,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:03:39,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-01-20 12:03:39,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273722330] [2021-01-20 12:03:39,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-20 12:03:39,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:03:39,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-20 12:03:39,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-01-20 12:03:39,696 INFO L87 Difference]: Start difference. First operand 12370 states. 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) [2021-01-20 12:03:40,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:03:40,787 INFO L93 Difference]: Finished difference Result 12690 states and 28160 transitions. [2021-01-20 12:03:40,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-20 12:03:40,787 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 [2021-01-20 12:03:40,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:03:40,800 INFO L225 Difference]: With dead ends: 12690 [2021-01-20 12:03:40,800 INFO L226 Difference]: Without dead ends: 12420 [2021-01-20 12:03:40,800 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=569, Invalid=1783, Unknown=0, NotChecked=0, Total=2352 [2021-01-20 12:03:40,800 INFO L78 Accepts]: Start accepts. Automaton has 12420 states. Word has length 111 [2021-01-20 12:03:40,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:03:40,800 INFO L481 AbstractCegarLoop]: Abstraction has 12420 states. [2021-01-20 12:03:40,801 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) [2021-01-20 12:03:40,801 INFO L276 IsEmpty]: Start isEmpty. Operand 12420 states. [2021-01-20 12:03:40,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-20 12:03:40,810 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:03:40,810 INFO L504 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] [2021-01-20 12:03:41,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,149 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:03:41,011 INFO L429 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:03:41,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:03:41,012 INFO L82 PathProgramCache]: Analyzing trace with hash 582188264, now seen corresponding path program 144 times [2021-01-20 12:03:41,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:03:41,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336530758] [2021-01-20 12:03:41,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:03:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:41,410 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:41,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336530758] [2021-01-20 12:03:41,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239416147] [2021-01-20 12:03:41,410 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 [2021-01-20 12:03:41,499 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-01-20 12:03:41,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:03:41,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-20 12:03:41,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:03:41,540 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:03:41,558 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:03:41,581 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:41,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:03:41,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-01-20 12:03:41,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799487460] [2021-01-20 12:03:41,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-20 12:03:41,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:03:41,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-20 12:03:41,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2021-01-20 12:03:41,583 INFO L87 Difference]: Start difference. First operand 12420 states. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:03:42,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:03:42,740 INFO L93 Difference]: Finished difference Result 12740 states and 28260 transitions. [2021-01-20 12:03:42,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-01-20 12:03:42,740 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:03:42,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:03:42,753 INFO L225 Difference]: With dead ends: 12740 [2021-01-20 12:03:42,753 INFO L226 Difference]: Without dead ends: 12470 [2021-01-20 12:03:42,754 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=593, Invalid=1957, Unknown=0, NotChecked=0, Total=2550 [2021-01-20 12:03:42,754 INFO L78 Accepts]: Start accepts. Automaton has 12470 states. Word has length 111 [2021-01-20 12:03:42,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:03:42,754 INFO L481 AbstractCegarLoop]: Abstraction has 12470 states. [2021-01-20 12:03:42,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:03:42,754 INFO L276 IsEmpty]: Start isEmpty. Operand 12470 states. [2021-01-20 12:03:42,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-20 12:03:42,764 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:03:42,764 INFO L504 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] [2021-01-20 12:03:42,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2021-01-20 12:03:42,965 INFO L429 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:03:42,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:03:42,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1467031958, now seen corresponding path program 145 times [2021-01-20 12:03:42,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:03:42,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803793789] [2021-01-20 12:03:42,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:03:42,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:43,329 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:43,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803793789] [2021-01-20 12:03:43,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093900721] [2021-01-20 12:03:43,329 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 [2021-01-20 12:03:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:43,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-20 12:03:43,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:03:43,432 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:03:43,447 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:43,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:03:43,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-01-20 12:03:43,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313318953] [2021-01-20 12:03:43,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-20 12:03:43,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:03:43,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-20 12:03:43,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2021-01-20 12:03:43,448 INFO L87 Difference]: Start difference. First operand 12470 states. 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) [2021-01-20 12:03:44,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:03:44,504 INFO L93 Difference]: Finished difference Result 12790 states and 28360 transitions. [2021-01-20 12:03:44,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-20 12:03:44,504 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 [2021-01-20 12:03:44,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:03:44,517 INFO L225 Difference]: With dead ends: 12790 [2021-01-20 12:03:44,517 INFO L226 Difference]: Without dead ends: 12520 [2021-01-20 12:03:44,518 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=623, Invalid=1927, Unknown=0, NotChecked=0, Total=2550 [2021-01-20 12:03:44,518 INFO L78 Accepts]: Start accepts. Automaton has 12520 states. Word has length 111 [2021-01-20 12:03:44,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:03:44,518 INFO L481 AbstractCegarLoop]: Abstraction has 12520 states. [2021-01-20 12:03:44,518 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) [2021-01-20 12:03:44,518 INFO L276 IsEmpty]: Start isEmpty. Operand 12520 states. [2021-01-20 12:03:44,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-20 12:03:44,528 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:03:44,528 INFO L504 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] [2021-01-20 12:03:44,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2021-01-20 12:03:44,729 INFO L429 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:03:44,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:03:44,729 INFO L82 PathProgramCache]: Analyzing trace with hash 873815142, now seen corresponding path program 146 times [2021-01-20 12:03:44,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:03:44,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722671946] [2021-01-20 12:03:44,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:03:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:45,109 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:45,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722671946] [2021-01-20 12:03:45,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958537637] [2021-01-20 12:03:45,110 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 [2021-01-20 12:03:45,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:03:45,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:03:45,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-20 12:03:45,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:03:45,224 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:03:45,243 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:03:45,258 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:45,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:03:45,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-01-20 12:03:45,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184517238] [2021-01-20 12:03:45,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-20 12:03:45,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:03:45,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-20 12:03:45,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2021-01-20 12:03:45,259 INFO L87 Difference]: Start difference. First operand 12520 states. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:03:46,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:03:46,541 INFO L93 Difference]: Finished difference Result 12840 states and 28460 transitions. [2021-01-20 12:03:46,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-01-20 12:03:46,542 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:03:46,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:03:46,555 INFO L225 Difference]: With dead ends: 12840 [2021-01-20 12:03:46,555 INFO L226 Difference]: Without dead ends: 12570 [2021-01-20 12:03:46,556 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=649, Invalid=2107, Unknown=0, NotChecked=0, Total=2756 [2021-01-20 12:03:46,556 INFO L78 Accepts]: Start accepts. Automaton has 12570 states. Word has length 111 [2021-01-20 12:03:46,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:03:46,556 INFO L481 AbstractCegarLoop]: Abstraction has 12570 states. [2021-01-20 12:03:46,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:03:46,556 INFO L276 IsEmpty]: Start isEmpty. Operand 12570 states. [2021-01-20 12:03:46,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-20 12:03:46,567 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:03:46,567 INFO L504 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] [2021-01-20 12:03:46,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2021-01-20 12:03:46,768 INFO L429 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:03:46,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:03:46,769 INFO L82 PathProgramCache]: Analyzing trace with hash 701129364, now seen corresponding path program 147 times [2021-01-20 12:03:46,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:03:46,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616874585] [2021-01-20 12:03:46,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:03:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:47,299 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:47,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616874585] [2021-01-20 12:03:47,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054641425] [2021-01-20 12:03:47,300 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 [2021-01-20 12:03:47,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-01-20 12:03:47,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:03:47,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 30 conjunts are in the unsatisfiable core [2021-01-20 12:03:47,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:03:47,430 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:03:47,452 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:47,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:03:47,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-01-20 12:03:47,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873949407] [2021-01-20 12:03:47,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-20 12:03:47,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:03:47,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-20 12:03:47,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2021-01-20 12:03:47,454 INFO L87 Difference]: Start difference. First operand 12570 states. 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) [2021-01-20 12:03:48,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:03:48,547 INFO L93 Difference]: Finished difference Result 12890 states and 28560 transitions. [2021-01-20 12:03:48,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-01-20 12:03:48,547 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 [2021-01-20 12:03:48,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:03:48,560 INFO L225 Difference]: With dead ends: 12890 [2021-01-20 12:03:48,561 INFO L226 Difference]: Without dead ends: 12620 [2021-01-20 12:03:48,561 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=693, Invalid=2063, Unknown=0, NotChecked=0, Total=2756 [2021-01-20 12:03:48,561 INFO L78 Accepts]: Start accepts. Automaton has 12620 states. Word has length 111 [2021-01-20 12:03:48,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:03:48,561 INFO L481 AbstractCegarLoop]: Abstraction has 12620 states. [2021-01-20 12:03:48,563 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) [2021-01-20 12:03:48,563 INFO L276 IsEmpty]: Start isEmpty. Operand 12620 states. [2021-01-20 12:03:48,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-20 12:03:48,578 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:03:48,578 INFO L504 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] [2021-01-20 12:03:48,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2021-01-20 12:03:48,793 INFO L429 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:03:48,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:03:48,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1432166044, now seen corresponding path program 148 times [2021-01-20 12:03:48,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:03:48,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117879356] [2021-01-20 12:03:48,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:03:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:49,318 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:49,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117879356] [2021-01-20 12:03:49,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617197680] [2021-01-20 12:03:49,319 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 [2021-01-20 12:03:49,447 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:03:49,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:03:49,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-20 12:03:49,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:03:49,513 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:03:49,542 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:03:49,568 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:49,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:03:49,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-01-20 12:03:49,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721556036] [2021-01-20 12:03:49,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-20 12:03:49,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:03:49,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-20 12:03:49,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2021-01-20 12:03:49,570 INFO L87 Difference]: Start difference. First operand 12620 states. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:03:50,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:03:50,963 INFO L93 Difference]: Finished difference Result 12940 states and 28660 transitions. [2021-01-20 12:03:50,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-01-20 12:03:50,964 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:03:50,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:03:50,976 INFO L225 Difference]: With dead ends: 12940 [2021-01-20 12:03:50,977 INFO L226 Difference]: Without dead ends: 12670 [2021-01-20 12:03:50,977 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=721, Invalid=2249, Unknown=0, NotChecked=0, Total=2970 [2021-01-20 12:03:50,977 INFO L78 Accepts]: Start accepts. Automaton has 12670 states. Word has length 111 [2021-01-20 12:03:50,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:03:50,977 INFO L481 AbstractCegarLoop]: Abstraction has 12670 states. [2021-01-20 12:03:50,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:03:50,977 INFO L276 IsEmpty]: Start isEmpty. Operand 12670 states. [2021-01-20 12:03:50,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-20 12:03:50,987 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:03:50,987 INFO L504 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] [2021-01-20 12:03:51,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,154 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:03:51,191 INFO L429 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:03:51,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:03:51,191 INFO L82 PathProgramCache]: Analyzing trace with hash 458434834, now seen corresponding path program 149 times [2021-01-20 12:03:51,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:03:51,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983578242] [2021-01-20 12:03:51,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:03:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:51,538 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:51,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983578242] [2021-01-20 12:03:51,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577229980] [2021-01-20 12:03:51,539 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 [2021-01-20 12:03:51,622 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-01-20 12:03:51,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:03:51,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-20 12:03:51,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:03:51,648 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:03:51,665 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:51,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:03:51,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-01-20 12:03:51,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250313054] [2021-01-20 12:03:51,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-20 12:03:51,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:03:51,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-20 12:03:51,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-01-20 12:03:51,666 INFO L87 Difference]: Start difference. First operand 12670 states. 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) [2021-01-20 12:03:52,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:03:52,849 INFO L93 Difference]: Finished difference Result 12990 states and 28760 transitions. [2021-01-20 12:03:52,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-01-20 12:03:52,849 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 [2021-01-20 12:03:52,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:03:52,862 INFO L225 Difference]: With dead ends: 12990 [2021-01-20 12:03:52,863 INFO L226 Difference]: Without dead ends: 12720 [2021-01-20 12:03:52,863 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=779, Invalid=2191, Unknown=0, NotChecked=0, Total=2970 [2021-01-20 12:03:52,863 INFO L78 Accepts]: Start accepts. Automaton has 12720 states. Word has length 111 [2021-01-20 12:03:52,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:03:52,863 INFO L481 AbstractCegarLoop]: Abstraction has 12720 states. [2021-01-20 12:03:52,863 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) [2021-01-20 12:03:52,863 INFO L276 IsEmpty]: Start isEmpty. Operand 12720 states. [2021-01-20 12:03:52,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-20 12:03:52,873 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:03:52,873 INFO L504 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] [2021-01-20 12:03:53,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable160 [2021-01-20 12:03:53,074 INFO L429 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:03:53,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:03:53,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1680141282, now seen corresponding path program 150 times [2021-01-20 12:03:53,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:03:53,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684915831] [2021-01-20 12:03:53,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:03:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:53,583 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:53,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684915831] [2021-01-20 12:03:53,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035803829] [2021-01-20 12:03:53,584 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 [2021-01-20 12:03:53,672 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-01-20 12:03:53,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:03:53,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-20 12:03:53,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:03:53,730 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:03:53,743 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:53,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:03:53,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-01-20 12:03:53,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599252899] [2021-01-20 12:03:53,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-20 12:03:53,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:03:53,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-20 12:03:53,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-01-20 12:03:53,744 INFO L87 Difference]: Start difference. First operand 12720 states. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:03:55,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:03:55,205 INFO L93 Difference]: Finished difference Result 13040 states and 28860 transitions. [2021-01-20 12:03:55,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-01-20 12:03:55,206 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:03:55,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:03:55,219 INFO L225 Difference]: With dead ends: 13040 [2021-01-20 12:03:55,219 INFO L226 Difference]: Without dead ends: 12770 [2021-01-20 12:03:55,219 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 776 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=761, Invalid=2431, Unknown=0, NotChecked=0, Total=3192 [2021-01-20 12:03:55,219 INFO L78 Accepts]: Start accepts. Automaton has 12770 states. Word has length 111 [2021-01-20 12:03:55,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:03:55,220 INFO L481 AbstractCegarLoop]: Abstraction has 12770 states. [2021-01-20 12:03:55,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:03:55,220 INFO L276 IsEmpty]: Start isEmpty. Operand 12770 states. [2021-01-20 12:03:55,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-20 12:03:55,230 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:03:55,230 INFO L504 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] [2021-01-20 12:03:55,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:03:55,430 INFO L429 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:03:55,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:03:55,431 INFO L82 PathProgramCache]: Analyzing trace with hash 590107920, now seen corresponding path program 151 times [2021-01-20 12:03:55,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:03:55,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842916448] [2021-01-20 12:03:55,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:03:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:55,770 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:55,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842916448] [2021-01-20 12:03:55,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840572979] [2021-01-20 12:03:55,770 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 [2021-01-20 12:03:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:55,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-20 12:03:55,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:03:55,878 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:03:55,893 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:55,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:03:55,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-01-20 12:03:55,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663354908] [2021-01-20 12:03:55,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-20 12:03:55,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:03:55,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-20 12:03:55,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-01-20 12:03:55,894 INFO L87 Difference]: Start difference. First operand 12770 states. 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) [2021-01-20 12:03:57,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:03:57,150 INFO L93 Difference]: Finished difference Result 13090 states and 28960 transitions. [2021-01-20 12:03:57,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-01-20 12:03:57,150 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 [2021-01-20 12:03:57,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:03:57,163 INFO L225 Difference]: With dead ends: 13090 [2021-01-20 12:03:57,164 INFO L226 Difference]: Without dead ends: 12820 [2021-01-20 12:03:57,164 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=881, Invalid=2311, Unknown=0, NotChecked=0, Total=3192 [2021-01-20 12:03:57,164 INFO L78 Accepts]: Start accepts. Automaton has 12820 states. Word has length 111 [2021-01-20 12:03:57,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:03:57,164 INFO L481 AbstractCegarLoop]: Abstraction has 12820 states. [2021-01-20 12:03:57,164 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) [2021-01-20 12:03:57,165 INFO L276 IsEmpty]: Start isEmpty. Operand 12820 states. [2021-01-20 12:03:57,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-20 12:03:57,174 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:03:57,175 INFO L504 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] [2021-01-20 12:03:57,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,157 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:03:57,375 INFO L429 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:03:57,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:03:57,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1509710816, now seen corresponding path program 152 times [2021-01-20 12:03:57,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:03:57,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3284708] [2021-01-20 12:03:57,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:03:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:03:57,732 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:57,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3284708] [2021-01-20 12:03:57,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314680271] [2021-01-20 12:03:57,732 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 [2021-01-20 12:03:57,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:03:57,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:03:57,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-20 12:03:57,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:03:57,848 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:03:57,868 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:03:57,880 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:03:57,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:03:57,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-01-20 12:03:57,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758056761] [2021-01-20 12:03:57,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-20 12:03:57,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:03:57,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-20 12:03:57,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2021-01-20 12:03:57,882 INFO L87 Difference]: Start difference. First operand 12820 states. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:03:59,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:03:59,488 INFO L93 Difference]: Finished difference Result 13180 states and 29140 transitions. [2021-01-20 12:03:59,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-01-20 12:03:59,488 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:03:59,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:03:59,502 INFO L225 Difference]: With dead ends: 13180 [2021-01-20 12:03:59,502 INFO L226 Difference]: Without dead ends: 12910 [2021-01-20 12:03:59,503 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 895 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=913, Invalid=2509, Unknown=0, NotChecked=0, Total=3422 [2021-01-20 12:03:59,503 INFO L78 Accepts]: Start accepts. Automaton has 12910 states. Word has length 111 [2021-01-20 12:03:59,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:03:59,503 INFO L481 AbstractCegarLoop]: Abstraction has 12910 states. [2021-01-20 12:03:59,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:03:59,503 INFO L276 IsEmpty]: Start isEmpty. Operand 12910 states. [2021-01-20 12:03:59,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-20 12:03:59,513 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:03:59,513 INFO L504 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] [2021-01-20 12:03:59,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,158 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:03:59,714 INFO L429 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:03:59,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:03:59,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1861786734, now seen corresponding path program 153 times [2021-01-20 12:03:59,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:03:59,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991020561] [2021-01-20 12:03:59,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:03:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:00,053 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:00,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991020561] [2021-01-20 12:04:00,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831404552] [2021-01-20 12:04:00,054 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 [2021-01-20 12:04:00,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-01-20 12:04:00,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:04:00,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-20 12:04:00,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:04:00,325 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:04:00,337 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:00,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:04:00,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-01-20 12:04:00,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188606931] [2021-01-20 12:04:00,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-20 12:04:00,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:04:00,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-20 12:04:00,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2021-01-20 12:04:00,338 INFO L87 Difference]: Start difference. First operand 12910 states. 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) [2021-01-20 12:04:01,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:04:01,670 INFO L93 Difference]: Finished difference Result 14382 states and 32504 transitions. [2021-01-20 12:04:01,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-01-20 12:04:01,671 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 [2021-01-20 12:04:01,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:04:01,685 INFO L225 Difference]: With dead ends: 14382 [2021-01-20 12:04:01,686 INFO L226 Difference]: Without dead ends: 14112 [2021-01-20 12:04:01,686 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1000, Invalid=2422, Unknown=0, NotChecked=0, Total=3422 [2021-01-20 12:04:01,686 INFO L78 Accepts]: Start accepts. Automaton has 14112 states. Word has length 111 [2021-01-20 12:04:01,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:04:01,686 INFO L481 AbstractCegarLoop]: Abstraction has 14112 states. [2021-01-20 12:04:01,686 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) [2021-01-20 12:04:01,687 INFO L276 IsEmpty]: Start isEmpty. Operand 14112 states. [2021-01-20 12:04:01,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-20 12:04:01,697 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:04:01,697 INFO L504 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] [2021-01-20 12:04:01,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable164 [2021-01-20 12:04:01,898 INFO L429 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:04:01,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:04:01,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1858813504, now seen corresponding path program 154 times [2021-01-20 12:04:01,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:04:01,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533022646] [2021-01-20 12:04:01,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:04:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:02,246 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:02,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533022646] [2021-01-20 12:04:02,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909077333] [2021-01-20 12:04:02,247 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 [2021-01-20 12:04:02,326 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:04:02,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:04:02,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-20 12:04:02,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:04:02,362 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:04:02,382 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:04:02,396 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:02,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:04:02,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-01-20 12:04:02,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072306780] [2021-01-20 12:04:02,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-20 12:04:02,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:04:02,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-20 12:04:02,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2021-01-20 12:04:02,398 INFO L87 Difference]: Start difference. First operand 14112 states. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:04:04,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:04:04,052 INFO L93 Difference]: Finished difference Result 13664 states and 30346 transitions. [2021-01-20 12:04:04,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-01-20 12:04:04,053 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:04:04,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:04:04,066 INFO L225 Difference]: With dead ends: 13664 [2021-01-20 12:04:04,066 INFO L226 Difference]: Without dead ends: 13125 [2021-01-20 12:04:04,067 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1036, Invalid=2624, Unknown=0, NotChecked=0, Total=3660 [2021-01-20 12:04:04,067 INFO L78 Accepts]: Start accepts. Automaton has 13125 states. Word has length 111 [2021-01-20 12:04:04,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:04:04,067 INFO L481 AbstractCegarLoop]: Abstraction has 13125 states. [2021-01-20 12:04:04,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:04:04,067 INFO L276 IsEmpty]: Start isEmpty. Operand 13125 states. [2021-01-20 12:04:04,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-20 12:04:04,078 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:04:04,078 INFO L504 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] [2021-01-20 12:04:04,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,160 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:04:04,279 INFO L429 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:04:04,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:04:04,280 INFO L82 PathProgramCache]: Analyzing trace with hash 2040084432, now seen corresponding path program 155 times [2021-01-20 12:04:04,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:04:04,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122457705] [2021-01-20 12:04:04,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:04:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:04,748 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:04,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122457705] [2021-01-20 12:04:04,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956917304] [2021-01-20 12:04:04,749 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 [2021-01-20 12:04:04,834 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-01-20 12:04:04,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:04:04,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-20 12:04:04,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:04:04,851 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:04:04,871 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:04,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:04:04,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-01-20 12:04:04,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497210052] [2021-01-20 12:04:04,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-20 12:04:04,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:04:04,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-20 12:04:04,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2021-01-20 12:04:04,872 INFO L87 Difference]: Start difference. First operand 13125 states. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:04:05,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:04:05,639 INFO L93 Difference]: Finished difference Result 13445 states and 29770 transitions. [2021-01-20 12:04:05,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-20 12:04:05,640 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:04:05,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:04:05,653 INFO L225 Difference]: With dead ends: 13445 [2021-01-20 12:04:05,653 INFO L226 Difference]: Without dead ends: 13175 [2021-01-20 12:04:05,654 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=512, Invalid=1380, Unknown=0, NotChecked=0, Total=1892 [2021-01-20 12:04:05,654 INFO L78 Accepts]: Start accepts. Automaton has 13175 states. Word has length 116 [2021-01-20 12:04:05,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:04:05,654 INFO L481 AbstractCegarLoop]: Abstraction has 13175 states. [2021-01-20 12:04:05,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:04:05,654 INFO L276 IsEmpty]: Start isEmpty. Operand 13175 states. [2021-01-20 12:04:05,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-20 12:04:05,665 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:04:05,665 INFO L504 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] [2021-01-20 12:04:05,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 161 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2021-01-20 12:04:05,866 INFO L429 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:04:05,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:04:05,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1163796130, now seen corresponding path program 156 times [2021-01-20 12:04:05,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:04:05,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900013620] [2021-01-20 12:04:05,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:04:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:06,363 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:06,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900013620] [2021-01-20 12:04:06,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581862351] [2021-01-20 12:04:06,364 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 [2021-01-20 12:04:06,452 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-01-20 12:04:06,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:04:06,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-20 12:04:06,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:04:06,484 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:04:06,502 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:04:06,669 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:06,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:04:06,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-01-20 12:04:06,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428129562] [2021-01-20 12:04:06,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-20 12:04:06,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:04:06,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-20 12:04:06,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2021-01-20 12:04:06,670 INFO L87 Difference]: Start difference. First operand 13175 states. 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) [2021-01-20 12:04:07,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:04:07,612 INFO L93 Difference]: Finished difference Result 13495 states and 29870 transitions. [2021-01-20 12:04:07,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-20 12:04:07,613 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 [2021-01-20 12:04:07,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:04:07,627 INFO L225 Difference]: With dead ends: 13495 [2021-01-20 12:04:07,627 INFO L226 Difference]: Without dead ends: 13225 [2021-01-20 12:04:07,627 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=575, Invalid=1681, Unknown=0, NotChecked=0, Total=2256 [2021-01-20 12:04:07,627 INFO L78 Accepts]: Start accepts. Automaton has 13225 states. Word has length 116 [2021-01-20 12:04:07,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:04:07,628 INFO L481 AbstractCegarLoop]: Abstraction has 13225 states. [2021-01-20 12:04:07,628 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) [2021-01-20 12:04:07,628 INFO L276 IsEmpty]: Start isEmpty. Operand 13225 states. [2021-01-20 12:04:07,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-20 12:04:07,639 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:04:07,639 INFO L504 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] [2021-01-20 12:04:07,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167,162 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:04:07,840 INFO L429 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:04:07,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:04:07,841 INFO L82 PathProgramCache]: Analyzing trace with hash -995490116, now seen corresponding path program 157 times [2021-01-20 12:04:07,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:04:07,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162769035] [2021-01-20 12:04:07,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:04:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:08,283 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:08,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162769035] [2021-01-20 12:04:08,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550975495] [2021-01-20 12:04:08,284 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 [2021-01-20 12:04:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:08,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-20 12:04:08,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:04:08,385 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:04:08,404 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:08,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:04:08,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-01-20 12:04:08,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845779271] [2021-01-20 12:04:08,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-20 12:04:08,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:04:08,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-20 12:04:08,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-01-20 12:04:08,405 INFO L87 Difference]: Start difference. First operand 13225 states. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:04:09,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:04:09,270 INFO L93 Difference]: Finished difference Result 13545 states and 29970 transitions. [2021-01-20 12:04:09,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-20 12:04:09,271 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:04:09,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:04:09,284 INFO L225 Difference]: With dead ends: 13545 [2021-01-20 12:04:09,284 INFO L226 Difference]: Without dead ends: 13275 [2021-01-20 12:04:09,285 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=519, Invalid=1551, Unknown=0, NotChecked=0, Total=2070 [2021-01-20 12:04:09,285 INFO L78 Accepts]: Start accepts. Automaton has 13275 states. Word has length 116 [2021-01-20 12:04:09,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:04:09,285 INFO L481 AbstractCegarLoop]: Abstraction has 13275 states. [2021-01-20 12:04:09,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:04:09,285 INFO L276 IsEmpty]: Start isEmpty. Operand 13275 states. [2021-01-20 12:04:09,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-20 12:04:09,296 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:04:09,296 INFO L504 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] [2021-01-20 12:04:09,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2021-01-20 12:04:09,497 INFO L429 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:04:09,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:04:09,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1529907828, now seen corresponding path program 158 times [2021-01-20 12:04:09,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:04:09,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207246019] [2021-01-20 12:04:09,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:04:09,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:09,967 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:09,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207246019] [2021-01-20 12:04:09,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656454094] [2021-01-20 12:04:09,968 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 [2021-01-20 12:04:10,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:04:10,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:04:10,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-20 12:04:10,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:04:10,080 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:04:10,097 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:04:10,116 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:10,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:04:10,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-01-20 12:04:10,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648798221] [2021-01-20 12:04:10,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-20 12:04:10,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:04:10,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-20 12:04:10,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2021-01-20 12:04:10,117 INFO L87 Difference]: Start difference. First operand 13275 states. 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) [2021-01-20 12:04:11,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:04:11,194 INFO L93 Difference]: Finished difference Result 13595 states and 30070 transitions. [2021-01-20 12:04:11,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-20 12:04:11,195 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 [2021-01-20 12:04:11,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:04:11,208 INFO L225 Difference]: With dead ends: 13595 [2021-01-20 12:04:11,208 INFO L226 Difference]: Without dead ends: 13325 [2021-01-20 12:04:11,208 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=590, Invalid=1860, Unknown=0, NotChecked=0, Total=2450 [2021-01-20 12:04:11,208 INFO L78 Accepts]: Start accepts. Automaton has 13325 states. Word has length 116 [2021-01-20 12:04:11,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:04:11,209 INFO L481 AbstractCegarLoop]: Abstraction has 13325 states. [2021-01-20 12:04:11,209 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) [2021-01-20 12:04:11,209 INFO L276 IsEmpty]: Start isEmpty. Operand 13325 states. [2021-01-20 12:04:11,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-20 12:04:11,220 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:04:11,220 INFO L504 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] [2021-01-20 12:04:11,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2021-01-20 12:04:11,421 INFO L429 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:04:11,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:04:11,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1505102022, now seen corresponding path program 159 times [2021-01-20 12:04:11,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:04:11,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573112174] [2021-01-20 12:04:11,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:04:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:11,852 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:11,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573112174] [2021-01-20 12:04:11,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137637236] [2021-01-20 12:04:11,853 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 [2021-01-20 12:04:11,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-01-20 12:04:11,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:04:11,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-20 12:04:11,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:04:11,962 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:04:11,981 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:11,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:04:11,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-01-20 12:04:11,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366560960] [2021-01-20 12:04:11,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-20 12:04:11,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:04:11,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-20 12:04:11,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2021-01-20 12:04:11,983 INFO L87 Difference]: Start difference. First operand 13325 states. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:04:13,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:04:13,107 INFO L93 Difference]: Finished difference Result 13645 states and 30170 transitions. [2021-01-20 12:04:13,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-20 12:04:13,107 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:04:13,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:04:13,118 INFO L225 Difference]: With dead ends: 13645 [2021-01-20 12:04:13,118 INFO L226 Difference]: Without dead ends: 13375 [2021-01-20 12:04:13,119 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=542, Invalid=1714, Unknown=0, NotChecked=0, Total=2256 [2021-01-20 12:04:13,119 INFO L78 Accepts]: Start accepts. Automaton has 13375 states. Word has length 116 [2021-01-20 12:04:13,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:04:13,119 INFO L481 AbstractCegarLoop]: Abstraction has 13375 states. [2021-01-20 12:04:13,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:04:13,119 INFO L276 IsEmpty]: Start isEmpty. Operand 13375 states. [2021-01-20 12:04:13,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-20 12:04:13,129 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:04:13,129 INFO L504 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] [2021-01-20 12:04:13,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170,165 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:04:13,330 INFO L429 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:04:13,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:04:13,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1395348982, now seen corresponding path program 160 times [2021-01-20 12:04:13,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:04:13,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2550177] [2021-01-20 12:04:13,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:04:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:13,777 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:13,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2550177] [2021-01-20 12:04:13,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788265905] [2021-01-20 12:04:13,777 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 [2021-01-20 12:04:13,859 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:04:13,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:04:13,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-20 12:04:13,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:04:13,894 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:04:13,913 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:04:13,930 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:13,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:04:13,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-01-20 12:04:13,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394661327] [2021-01-20 12:04:13,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-20 12:04:13,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:04:13,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-20 12:04:13,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2021-01-20 12:04:13,931 INFO L87 Difference]: Start difference. First operand 13375 states. 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) [2021-01-20 12:04:15,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:04:15,149 INFO L93 Difference]: Finished difference Result 13695 states and 30270 transitions. [2021-01-20 12:04:15,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-01-20 12:04:15,150 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 [2021-01-20 12:04:15,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:04:15,163 INFO L225 Difference]: With dead ends: 13695 [2021-01-20 12:04:15,163 INFO L226 Difference]: Without dead ends: 13425 [2021-01-20 12:04:15,164 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=621, Invalid=2031, Unknown=0, NotChecked=0, Total=2652 [2021-01-20 12:04:15,164 INFO L78 Accepts]: Start accepts. Automaton has 13425 states. Word has length 116 [2021-01-20 12:04:15,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:04:15,164 INFO L481 AbstractCegarLoop]: Abstraction has 13425 states. [2021-01-20 12:04:15,164 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) [2021-01-20 12:04:15,164 INFO L276 IsEmpty]: Start isEmpty. Operand 13425 states. [2021-01-20 12:04:15,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-20 12:04:15,176 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:04:15,176 INFO L504 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] [2021-01-20 12:04:15,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171,166 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:04:15,377 INFO L429 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:04:15,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:04:15,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1891185352, now seen corresponding path program 161 times [2021-01-20 12:04:15,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:04:15,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922792135] [2021-01-20 12:04:15,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:04:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:15,788 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:15,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922792135] [2021-01-20 12:04:15,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309820159] [2021-01-20 12:04:15,788 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 [2021-01-20 12:04:15,873 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-01-20 12:04:15,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:04:15,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-20 12:04:15,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:04:15,895 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:04:15,911 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:15,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:04:15,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-01-20 12:04:15,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996772202] [2021-01-20 12:04:15,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-20 12:04:15,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:04:15,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-20 12:04:15,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2021-01-20 12:04:15,912 INFO L87 Difference]: Start difference. First operand 13425 states. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:04:17,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:04:17,004 INFO L93 Difference]: Finished difference Result 13745 states and 30370 transitions. [2021-01-20 12:04:17,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-20 12:04:17,004 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:04:17,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:04:17,017 INFO L225 Difference]: With dead ends: 13745 [2021-01-20 12:04:17,018 INFO L226 Difference]: Without dead ends: 13475 [2021-01-20 12:04:17,018 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=581, Invalid=1869, Unknown=0, NotChecked=0, Total=2450 [2021-01-20 12:04:17,018 INFO L78 Accepts]: Start accepts. Automaton has 13475 states. Word has length 116 [2021-01-20 12:04:17,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:04:17,019 INFO L481 AbstractCegarLoop]: Abstraction has 13475 states. [2021-01-20 12:04:17,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:04:17,019 INFO L276 IsEmpty]: Start isEmpty. Operand 13475 states. [2021-01-20 12:04:17,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-20 12:04:17,031 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:04:17,031 INFO L504 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] [2021-01-20 12:04:17,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 167 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable172 [2021-01-20 12:04:17,232 INFO L429 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:04:17,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:04:17,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1187265528, now seen corresponding path program 162 times [2021-01-20 12:04:17,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:04:17,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195903601] [2021-01-20 12:04:17,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:04:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:17,655 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:17,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195903601] [2021-01-20 12:04:17,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510147093] [2021-01-20 12:04:17,655 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 [2021-01-20 12:04:17,747 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-01-20 12:04:17,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:04:17,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-20 12:04:17,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:04:17,781 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:04:17,802 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:04:17,827 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:17,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:04:17,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-01-20 12:04:17,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737187785] [2021-01-20 12:04:17,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-20 12:04:17,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:04:17,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-20 12:04:17,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2021-01-20 12:04:17,828 INFO L87 Difference]: Start difference. First operand 13475 states. 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) [2021-01-20 12:04:19,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:04:19,215 INFO L93 Difference]: Finished difference Result 13795 states and 30470 transitions. [2021-01-20 12:04:19,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-01-20 12:04:19,216 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 [2021-01-20 12:04:19,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:04:19,229 INFO L225 Difference]: With dead ends: 13795 [2021-01-20 12:04:19,230 INFO L226 Difference]: Without dead ends: 13525 [2021-01-20 12:04:19,230 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=668, Invalid=2194, Unknown=0, NotChecked=0, Total=2862 [2021-01-20 12:04:19,230 INFO L78 Accepts]: Start accepts. Automaton has 13525 states. Word has length 116 [2021-01-20 12:04:19,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:04:19,230 INFO L481 AbstractCegarLoop]: Abstraction has 13525 states. [2021-01-20 12:04:19,230 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) [2021-01-20 12:04:19,230 INFO L276 IsEmpty]: Start isEmpty. Operand 13525 states. [2021-01-20 12:04:19,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-20 12:04:19,242 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:04:19,242 INFO L504 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] [2021-01-20 12:04:19,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,168 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:04:19,443 INFO L429 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:04:19,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:04:19,443 INFO L82 PathProgramCache]: Analyzing trace with hash -302421834, now seen corresponding path program 163 times [2021-01-20 12:04:19,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:04:19,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496621367] [2021-01-20 12:04:19,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:04:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:19,998 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:19,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496621367] [2021-01-20 12:04:19,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681355857] [2021-01-20 12:04:19,999 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 [2021-01-20 12:04:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:20,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-20 12:04:20,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:04:20,104 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:04:20,120 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:20,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:04:20,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-01-20 12:04:20,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087949339] [2021-01-20 12:04:20,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-20 12:04:20,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:04:20,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-20 12:04:20,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2021-01-20 12:04:20,121 INFO L87 Difference]: Start difference. First operand 13525 states. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:04:21,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:04:21,341 INFO L93 Difference]: Finished difference Result 13845 states and 30570 transitions. [2021-01-20 12:04:21,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-20 12:04:21,341 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:04:21,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:04:21,356 INFO L225 Difference]: With dead ends: 13845 [2021-01-20 12:04:21,356 INFO L226 Difference]: Without dead ends: 13575 [2021-01-20 12:04:21,357 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=636, Invalid=2016, Unknown=0, NotChecked=0, Total=2652 [2021-01-20 12:04:21,357 INFO L78 Accepts]: Start accepts. Automaton has 13575 states. Word has length 116 [2021-01-20 12:04:21,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:04:21,357 INFO L481 AbstractCegarLoop]: Abstraction has 13575 states. [2021-01-20 12:04:21,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:04:21,357 INFO L276 IsEmpty]: Start isEmpty. Operand 13575 states. [2021-01-20 12:04:21,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-20 12:04:21,368 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:04:21,368 INFO L504 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] [2021-01-20 12:04:21,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,169 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:04:21,569 INFO L429 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:04:21,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:04:21,570 INFO L82 PathProgramCache]: Analyzing trace with hash -895638650, now seen corresponding path program 164 times [2021-01-20 12:04:21,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:04:21,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175685691] [2021-01-20 12:04:21,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:04:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:21,984 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:21,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175685691] [2021-01-20 12:04:21,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241870251] [2021-01-20 12:04:21,984 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 [2021-01-20 12:04:22,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:04:22,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:04:22,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-20 12:04:22,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:04:22,112 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:04:22,133 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:04:22,149 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:22,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:04:22,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-01-20 12:04:22,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022589820] [2021-01-20 12:04:22,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-20 12:04:22,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:04:22,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-20 12:04:22,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2021-01-20 12:04:22,150 INFO L87 Difference]: Start difference. First operand 13575 states. 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) [2021-01-20 12:04:23,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:04:23,688 INFO L93 Difference]: Finished difference Result 13895 states and 30670 transitions. [2021-01-20 12:04:23,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-01-20 12:04:23,689 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 [2021-01-20 12:04:23,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:04:23,703 INFO L225 Difference]: With dead ends: 13895 [2021-01-20 12:04:23,703 INFO L226 Difference]: Without dead ends: 13625 [2021-01-20 12:04:23,704 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=731, Invalid=2349, Unknown=0, NotChecked=0, Total=3080 [2021-01-20 12:04:23,704 INFO L78 Accepts]: Start accepts. Automaton has 13625 states. Word has length 116 [2021-01-20 12:04:23,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:04:23,704 INFO L481 AbstractCegarLoop]: Abstraction has 13625 states. [2021-01-20 12:04:23,704 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) [2021-01-20 12:04:23,704 INFO L276 IsEmpty]: Start isEmpty. Operand 13625 states. [2021-01-20 12:04:23,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-20 12:04:23,715 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:04:23,715 INFO L504 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] [2021-01-20 12:04:23,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,170 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:04:23,916 INFO L429 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:04:23,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:04:23,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1068324428, now seen corresponding path program 165 times [2021-01-20 12:04:23,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:04:23,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118696833] [2021-01-20 12:04:23,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:04:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:24,308 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:24,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118696833] [2021-01-20 12:04:24,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104957122] [2021-01-20 12:04:24,309 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 [2021-01-20 12:04:24,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-01-20 12:04:24,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:04:24,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 31 conjunts are in the unsatisfiable core [2021-01-20 12:04:24,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:04:24,425 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:04:24,440 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:24,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:04:24,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-01-20 12:04:24,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726226113] [2021-01-20 12:04:24,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-20 12:04:24,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:04:24,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-20 12:04:24,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2021-01-20 12:04:24,441 INFO L87 Difference]: Start difference. First operand 13625 states. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:04:25,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:04:25,716 INFO L93 Difference]: Finished difference Result 13945 states and 30770 transitions. [2021-01-20 12:04:25,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-01-20 12:04:25,717 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:04:25,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:04:25,730 INFO L225 Difference]: With dead ends: 13945 [2021-01-20 12:04:25,730 INFO L226 Difference]: Without dead ends: 13675 [2021-01-20 12:04:25,731 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=707, Invalid=2155, Unknown=0, NotChecked=0, Total=2862 [2021-01-20 12:04:25,731 INFO L78 Accepts]: Start accepts. Automaton has 13675 states. Word has length 116 [2021-01-20 12:04:25,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:04:25,731 INFO L481 AbstractCegarLoop]: Abstraction has 13675 states. [2021-01-20 12:04:25,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:04:25,731 INFO L276 IsEmpty]: Start isEmpty. Operand 13675 states. [2021-01-20 12:04:25,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-20 12:04:25,743 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:04:25,743 INFO L504 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] [2021-01-20 12:04:25,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable176 [2021-01-20 12:04:25,943 INFO L429 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:04:25,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:04:25,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1093347460, now seen corresponding path program 166 times [2021-01-20 12:04:25,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:04:25,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138259265] [2021-01-20 12:04:25,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:04:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:26,258 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 3 [2021-01-20 12:04:26,510 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:26,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138259265] [2021-01-20 12:04:26,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260359930] [2021-01-20 12:04:26,511 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 [2021-01-20 12:04:26,594 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:04:26,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:04:26,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-20 12:04:26,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:04:26,630 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:04:26,652 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:04:26,676 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:26,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:04:26,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-01-20 12:04:26,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19293448] [2021-01-20 12:04:26,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-20 12:04:26,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:04:26,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-20 12:04:26,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2021-01-20 12:04:26,677 INFO L87 Difference]: Start difference. First operand 13675 states. 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) [2021-01-20 12:04:28,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:04:28,314 INFO L93 Difference]: Finished difference Result 13995 states and 30870 transitions. [2021-01-20 12:04:28,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-01-20 12:04:28,314 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 [2021-01-20 12:04:28,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:04:28,327 INFO L225 Difference]: With dead ends: 13995 [2021-01-20 12:04:28,328 INFO L226 Difference]: Without dead ends: 13725 [2021-01-20 12:04:28,328 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=810, Invalid=2496, Unknown=0, NotChecked=0, Total=3306 [2021-01-20 12:04:28,328 INFO L78 Accepts]: Start accepts. Automaton has 13725 states. Word has length 116 [2021-01-20 12:04:28,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:04:28,328 INFO L481 AbstractCegarLoop]: Abstraction has 13725 states. [2021-01-20 12:04:28,328 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) [2021-01-20 12:04:28,328 INFO L276 IsEmpty]: Start isEmpty. Operand 13725 states. [2021-01-20 12:04:28,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-20 12:04:28,340 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:04:28,340 INFO L504 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] [2021-01-20 12:04:28,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177,172 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:04:28,541 INFO L429 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:04:28,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:04:28,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1311018958, now seen corresponding path program 167 times [2021-01-20 12:04:28,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:04:28,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929542370] [2021-01-20 12:04:28,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:04:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:28,920 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:28,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929542370] [2021-01-20 12:04:28,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110997688] [2021-01-20 12:04:28,920 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 [2021-01-20 12:04:29,006 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-01-20 12:04:29,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:04:29,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-20 12:04:29,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:04:29,034 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:04:29,048 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:29,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:04:29,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-01-20 12:04:29,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293382699] [2021-01-20 12:04:29,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-20 12:04:29,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:04:29,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-20 12:04:29,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2021-01-20 12:04:29,049 INFO L87 Difference]: Start difference. First operand 13725 states. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:04:30,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:04:30,422 INFO L93 Difference]: Finished difference Result 14045 states and 30970 transitions. [2021-01-20 12:04:30,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-01-20 12:04:30,423 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:04:30,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:04:30,441 INFO L225 Difference]: With dead ends: 14045 [2021-01-20 12:04:30,441 INFO L226 Difference]: Without dead ends: 13775 [2021-01-20 12:04:30,442 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=794, Invalid=2286, Unknown=0, NotChecked=0, Total=3080 [2021-01-20 12:04:30,442 INFO L78 Accepts]: Start accepts. Automaton has 13775 states. Word has length 116 [2021-01-20 12:04:30,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:04:30,442 INFO L481 AbstractCegarLoop]: Abstraction has 13775 states. [2021-01-20 12:04:30,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:04:30,442 INFO L276 IsEmpty]: Start isEmpty. Operand 13775 states. [2021-01-20 12:04:30,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-20 12:04:30,459 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:04:30,459 INFO L504 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] [2021-01-20 12:04:30,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 173 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable178 [2021-01-20 12:04:30,673 INFO L429 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:04:30,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:04:30,674 INFO L82 PathProgramCache]: Analyzing trace with hash -89312510, now seen corresponding path program 168 times [2021-01-20 12:04:30,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:04:30,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645217811] [2021-01-20 12:04:30,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:04:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:31,060 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:31,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645217811] [2021-01-20 12:04:31,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283501268] [2021-01-20 12:04:31,061 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 [2021-01-20 12:04:31,149 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-01-20 12:04:31,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:04:31,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-20 12:04:31,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:04:31,208 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:04:31,223 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:31,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:04:31,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-01-20 12:04:31,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349285492] [2021-01-20 12:04:31,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-20 12:04:31,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:04:31,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-20 12:04:31,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2021-01-20 12:04:31,224 INFO L87 Difference]: Start difference. First operand 13775 states. 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) [2021-01-20 12:04:32,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:04:32,892 INFO L93 Difference]: Finished difference Result 14095 states and 31070 transitions. [2021-01-20 12:04:32,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-01-20 12:04:32,892 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 [2021-01-20 12:04:32,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:04:32,907 INFO L225 Difference]: With dead ends: 14095 [2021-01-20 12:04:32,907 INFO L226 Difference]: Without dead ends: 13825 [2021-01-20 12:04:32,907 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 766 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=773, Invalid=2533, Unknown=0, NotChecked=0, Total=3306 [2021-01-20 12:04:32,908 INFO L78 Accepts]: Start accepts. Automaton has 13825 states. Word has length 116 [2021-01-20 12:04:32,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:04:32,908 INFO L481 AbstractCegarLoop]: Abstraction has 13825 states. [2021-01-20 12:04:32,908 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) [2021-01-20 12:04:32,908 INFO L276 IsEmpty]: Start isEmpty. Operand 13825 states. [2021-01-20 12:04:32,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-20 12:04:32,919 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:04:32,920 INFO L504 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] [2021-01-20 12:04:33,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 174 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2021-01-20 12:04:33,120 INFO L429 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:04:33,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:04:33,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1179345872, now seen corresponding path program 169 times [2021-01-20 12:04:33,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:04:33,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481092410] [2021-01-20 12:04:33,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:04:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:33,655 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:33,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481092410] [2021-01-20 12:04:33,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805936912] [2021-01-20 12:04:33,655 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 [2021-01-20 12:04:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:33,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-20 12:04:33,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:04:33,766 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:04:33,781 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:33,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:04:33,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-01-20 12:04:33,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733474803] [2021-01-20 12:04:33,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-20 12:04:33,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:04:33,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-20 12:04:33,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-01-20 12:04:33,783 INFO L87 Difference]: Start difference. First operand 13825 states. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:04:35,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:04:35,218 INFO L93 Difference]: Finished difference Result 14145 states and 31170 transitions. [2021-01-20 12:04:35,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-01-20 12:04:35,218 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:04:35,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:04:35,233 INFO L225 Difference]: With dead ends: 14145 [2021-01-20 12:04:35,233 INFO L226 Difference]: Without dead ends: 13875 [2021-01-20 12:04:35,233 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=897, Invalid=2409, Unknown=0, NotChecked=0, Total=3306 [2021-01-20 12:04:35,234 INFO L78 Accepts]: Start accepts. Automaton has 13875 states. Word has length 116 [2021-01-20 12:04:35,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:04:35,234 INFO L481 AbstractCegarLoop]: Abstraction has 13875 states. [2021-01-20 12:04:35,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:04:35,234 INFO L276 IsEmpty]: Start isEmpty. Operand 13875 states. [2021-01-20 12:04:35,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-20 12:04:35,245 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:04:35,245 INFO L504 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] [2021-01-20 12:04:35,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180,175 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:04:35,446 INFO L429 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:04:35,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:04:35,447 INFO L82 PathProgramCache]: Analyzing trace with hash -259742976, now seen corresponding path program 170 times [2021-01-20 12:04:35,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:04:35,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278507115] [2021-01-20 12:04:35,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:04:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:35,834 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:35,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278507115] [2021-01-20 12:04:35,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225811152] [2021-01-20 12:04:35,834 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 [2021-01-20 12:04:35,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:04:35,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:04:35,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-20 12:04:35,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:04:35,951 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:04:35,973 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:04:35,986 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:35,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:04:35,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-01-20 12:04:35,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72668038] [2021-01-20 12:04:35,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-20 12:04:35,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:04:35,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-20 12:04:35,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2021-01-20 12:04:35,987 INFO L87 Difference]: Start difference. First operand 13875 states. 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) [2021-01-20 12:04:37,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:04:37,814 INFO L93 Difference]: Finished difference Result 14235 states and 31350 transitions. [2021-01-20 12:04:37,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-01-20 12:04:37,815 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 [2021-01-20 12:04:37,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:04:37,829 INFO L225 Difference]: With dead ends: 14235 [2021-01-20 12:04:37,829 INFO L226 Difference]: Without dead ends: 13965 [2021-01-20 12:04:37,830 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1016, Invalid=2766, Unknown=0, NotChecked=0, Total=3782 [2021-01-20 12:04:37,830 INFO L78 Accepts]: Start accepts. Automaton has 13965 states. Word has length 116 [2021-01-20 12:04:37,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:04:37,830 INFO L481 AbstractCegarLoop]: Abstraction has 13965 states. [2021-01-20 12:04:37,830 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) [2021-01-20 12:04:37,830 INFO L276 IsEmpty]: Start isEmpty. Operand 13965 states. [2021-01-20 12:04:37,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-20 12:04:37,842 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:04:37,842 INFO L504 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] [2021-01-20 12:04:38,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable181 [2021-01-20 12:04:38,043 INFO L429 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:04:38,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:04:38,044 INFO L82 PathProgramCache]: Analyzing trace with hash 92332942, now seen corresponding path program 171 times [2021-01-20 12:04:38,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:04:38,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518510569] [2021-01-20 12:04:38,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:04:38,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:38,417 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:38,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518510569] [2021-01-20 12:04:38,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223817413] [2021-01-20 12:04:38,418 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 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 [2021-01-20 12:04:38,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-01-20 12:04:38,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:04:38,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-20 12:04:38,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:04:38,537 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:04:38,550 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:38,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:04:38,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-01-20 12:04:38,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917458786] [2021-01-20 12:04:38,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-20 12:04:38,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:04:38,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-20 12:04:38,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2021-01-20 12:04:38,551 INFO L87 Difference]: Start difference. First operand 13965 states. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:04:40,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:04:40,198 INFO L93 Difference]: Finished difference Result 15437 states and 34714 transitions. [2021-01-20 12:04:40,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-01-20 12:04:40,198 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:04:40,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:04:40,212 INFO L225 Difference]: With dead ends: 15437 [2021-01-20 12:04:40,212 INFO L226 Difference]: Without dead ends: 15167 [2021-01-20 12:04:40,212 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1017, Invalid=2523, Unknown=0, NotChecked=0, Total=3540 [2021-01-20 12:04:40,212 INFO L78 Accepts]: Start accepts. Automaton has 15167 states. Word has length 116 [2021-01-20 12:04:40,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:04:40,213 INFO L481 AbstractCegarLoop]: Abstraction has 15167 states. [2021-01-20 12:04:40,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:04:40,213 INFO L276 IsEmpty]: Start isEmpty. Operand 15167 states. [2021-01-20 12:04:40,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-20 12:04:40,223 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:04:40,223 INFO L504 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] [2021-01-20 12:04:40,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,177 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:04:40,423 INFO L429 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:04:40,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:04:40,424 INFO L82 PathProgramCache]: Analyzing trace with hash 89359712, now seen corresponding path program 172 times [2021-01-20 12:04:40,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:04:40,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452569580] [2021-01-20 12:04:40,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:04:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:40,816 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:40,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452569580] [2021-01-20 12:04:40,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455540917] [2021-01-20 12:04:40,817 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 [2021-01-20 12:04:40,899 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:04:40,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:04:40,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-20 12:04:40,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:04:40,936 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:04:40,959 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:04:40,974 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:40,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:04:40,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-01-20 12:04:40,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803014988] [2021-01-20 12:04:40,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-20 12:04:40,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:04:40,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-20 12:04:40,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2021-01-20 12:04:40,975 INFO L87 Difference]: Start difference. First operand 15167 states. 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) [2021-01-20 12:04:42,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:04:42,868 INFO L93 Difference]: Finished difference Result 14719 states and 32556 transitions. [2021-01-20 12:04:42,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-01-20 12:04:42,869 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 [2021-01-20 12:04:42,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:04:42,883 INFO L225 Difference]: With dead ends: 14719 [2021-01-20 12:04:42,884 INFO L226 Difference]: Without dead ends: 14180 [2021-01-20 12:04:42,884 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1146, Invalid=2886, Unknown=0, NotChecked=0, Total=4032 [2021-01-20 12:04:42,884 INFO L78 Accepts]: Start accepts. Automaton has 14180 states. Word has length 116 [2021-01-20 12:04:42,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:04:42,885 INFO L481 AbstractCegarLoop]: Abstraction has 14180 states. [2021-01-20 12:04:42,885 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) [2021-01-20 12:04:42,885 INFO L276 IsEmpty]: Start isEmpty. Operand 14180 states. [2021-01-20 12:04:42,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-20 12:04:42,897 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:04:42,897 INFO L504 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] [2021-01-20 12:04:43,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 178 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable183 [2021-01-20 12:04:43,098 INFO L429 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:04:43,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:04:43,099 INFO L82 PathProgramCache]: Analyzing trace with hash -747814239, now seen corresponding path program 173 times [2021-01-20 12:04:43,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:04:43,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420829638] [2021-01-20 12:04:43,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:04:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:43,625 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:43,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420829638] [2021-01-20 12:04:43,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488278179] [2021-01-20 12:04:43,626 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 [2021-01-20 12:04:43,713 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-01-20 12:04:43,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:04:43,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-20 12:04:43,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:04:43,764 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:04:43,787 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:43,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:04:43,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-01-20 12:04:43,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285682196] [2021-01-20 12:04:43,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-20 12:04:43,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:04:43,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-20 12:04:43,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2021-01-20 12:04:43,788 INFO L87 Difference]: Start difference. First operand 14180 states. 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) [2021-01-20 12:04:44,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:04:44,594 INFO L93 Difference]: Finished difference Result 14500 states and 31980 transitions. [2021-01-20 12:04:44,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-20 12:04:44,595 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 [2021-01-20 12:04:44,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:04:44,609 INFO L225 Difference]: With dead ends: 14500 [2021-01-20 12:04:44,610 INFO L226 Difference]: Without dead ends: 14230 [2021-01-20 12:04:44,610 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=599, Invalid=1471, Unknown=0, NotChecked=0, Total=2070 [2021-01-20 12:04:44,610 INFO L78 Accepts]: Start accepts. Automaton has 14230 states. Word has length 121 [2021-01-20 12:04:44,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:04:44,610 INFO L481 AbstractCegarLoop]: Abstraction has 14230 states. [2021-01-20 12:04:44,610 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) [2021-01-20 12:04:44,610 INFO L276 IsEmpty]: Start isEmpty. Operand 14230 states. [2021-01-20 12:04:44,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-20 12:04:44,623 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:04:44,623 INFO L504 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] [2021-01-20 12:04:44,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,179 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:04:44,824 INFO L429 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:04:44,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:04:44,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1449478899, now seen corresponding path program 174 times [2021-01-20 12:04:44,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:04:44,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333984485] [2021-01-20 12:04:44,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:04:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:45,386 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:45,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333984485] [2021-01-20 12:04:45,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922554558] [2021-01-20 12:04:45,386 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 [2021-01-20 12:04:45,477 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-01-20 12:04:45,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:04:45,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-20 12:04:45,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:04:45,512 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:04:45,565 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:04:45,587 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:45,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:04:45,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2021-01-20 12:04:45,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496689204] [2021-01-20 12:04:45,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-20 12:04:45,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:04:45,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-20 12:04:45,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2021-01-20 12:04:45,588 INFO L87 Difference]: Start difference. First operand 14230 states. Second operand has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:04:46,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:04:46,560 INFO L93 Difference]: Finished difference Result 14550 states and 32080 transitions. [2021-01-20 12:04:46,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-20 12:04:46,561 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:04:46,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:04:46,575 INFO L225 Difference]: With dead ends: 14550 [2021-01-20 12:04:46,576 INFO L226 Difference]: Without dead ends: 14280 [2021-01-20 12:04:46,576 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2021-01-20 12:04:46,576 INFO L78 Accepts]: Start accepts. Automaton has 14280 states. Word has length 121 [2021-01-20 12:04:46,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:04:46,576 INFO L481 AbstractCegarLoop]: Abstraction has 14280 states. [2021-01-20 12:04:46,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:04:46,577 INFO L276 IsEmpty]: Start isEmpty. Operand 14280 states. [2021-01-20 12:04:46,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-20 12:04:46,589 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:04:46,589 INFO L504 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] [2021-01-20 12:04:46,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,180 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:04:46,790 INFO L429 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:04:46,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:04:46,790 INFO L82 PathProgramCache]: Analyzing trace with hash -718710131, now seen corresponding path program 175 times [2021-01-20 12:04:46,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:04:46,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517268144] [2021-01-20 12:04:46,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:04:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:47,456 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:47,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517268144] [2021-01-20 12:04:47,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361916252] [2021-01-20 12:04:47,456 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 [2021-01-20 12:04:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:47,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-20 12:04:47,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:04:47,590 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:04:47,612 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:47,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:04:47,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-01-20 12:04:47,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710451342] [2021-01-20 12:04:47,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-20 12:04:47,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:04:47,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-20 12:04:47,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2021-01-20 12:04:47,613 INFO L87 Difference]: Start difference. First operand 14280 states. 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) [2021-01-20 12:04:48,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:04:48,571 INFO L93 Difference]: Finished difference Result 14600 states and 32180 transitions. [2021-01-20 12:04:48,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-20 12:04:48,572 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 [2021-01-20 12:04:48,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:04:48,587 INFO L225 Difference]: With dead ends: 14600 [2021-01-20 12:04:48,587 INFO L226 Difference]: Without dead ends: 14330 [2021-01-20 12:04:48,587 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=610, Invalid=1742, Unknown=0, NotChecked=0, Total=2352 [2021-01-20 12:04:48,587 INFO L78 Accepts]: Start accepts. Automaton has 14330 states. Word has length 121 [2021-01-20 12:04:48,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:04:48,588 INFO L481 AbstractCegarLoop]: Abstraction has 14330 states. [2021-01-20 12:04:48,588 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) [2021-01-20 12:04:48,588 INFO L276 IsEmpty]: Start isEmpty. Operand 14330 states. [2021-01-20 12:04:48,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-20 12:04:48,600 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:04:48,600 INFO L504 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] [2021-01-20 12:04:48,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,181 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:04:48,801 INFO L429 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:04:48,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:04:48,801 INFO L82 PathProgramCache]: Analyzing trace with hash -911309475, now seen corresponding path program 176 times [2021-01-20 12:04:48,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:04:48,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304919329] [2021-01-20 12:04:48,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:04:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:49,355 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:49,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304919329] [2021-01-20 12:04:49,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120898588] [2021-01-20 12:04:49,355 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 [2021-01-20 12:04:49,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:04:49,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:04:49,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-20 12:04:49,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:04:49,471 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:04:49,526 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:04:49,548 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:49,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:04:49,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2021-01-20 12:04:49,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140474900] [2021-01-20 12:04:49,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-20 12:04:49,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:04:49,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-20 12:04:49,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2021-01-20 12:04:49,549 INFO L87 Difference]: Start difference. First operand 14330 states. Second operand has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:04:50,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:04:50,666 INFO L93 Difference]: Finished difference Result 14700 states and 32380 transitions. [2021-01-20 12:04:50,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-20 12:04:50,666 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:04:50,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:04:50,680 INFO L225 Difference]: With dead ends: 14700 [2021-01-20 12:04:50,680 INFO L226 Difference]: Without dead ends: 14430 [2021-01-20 12:04:50,681 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=665, Invalid=1987, Unknown=0, NotChecked=0, Total=2652 [2021-01-20 12:04:50,681 INFO L78 Accepts]: Start accepts. Automaton has 14430 states. Word has length 121 [2021-01-20 12:04:50,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:04:50,681 INFO L481 AbstractCegarLoop]: Abstraction has 14430 states. [2021-01-20 12:04:50,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:04:50,681 INFO L276 IsEmpty]: Start isEmpty. Operand 14430 states. [2021-01-20 12:04:50,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-20 12:04:50,694 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:04:50,694 INFO L504 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] [2021-01-20 12:04:50,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,182 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:04:50,895 INFO L429 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:04:50,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:04:50,895 INFO L82 PathProgramCache]: Analyzing trace with hash 741164427, now seen corresponding path program 177 times [2021-01-20 12:04:50,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:04:50,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102228976] [2021-01-20 12:04:50,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:04:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:51,393 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:51,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102228976] [2021-01-20 12:04:51,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271257437] [2021-01-20 12:04:51,393 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 [2021-01-20 12:04:51,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-01-20 12:04:51,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:04:51,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 40 conjunts are in the unsatisfiable core [2021-01-20 12:04:51,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:04:51,535 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:04:51,557 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:51,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:04:51,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-01-20 12:04:51,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363454653] [2021-01-20 12:04:51,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-20 12:04:51,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:04:51,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-20 12:04:51,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2021-01-20 12:04:51,558 INFO L87 Difference]: Start difference. First operand 14430 states. 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) [2021-01-20 12:04:52,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:04:52,600 INFO L93 Difference]: Finished difference Result 14750 states and 32480 transitions. [2021-01-20 12:04:52,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-20 12:04:52,601 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 [2021-01-20 12:04:52,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:04:52,615 INFO L225 Difference]: With dead ends: 14750 [2021-01-20 12:04:52,616 INFO L226 Difference]: Without dead ends: 14480 [2021-01-20 12:04:52,616 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=663, Invalid=1989, Unknown=0, NotChecked=0, Total=2652 [2021-01-20 12:04:52,616 INFO L78 Accepts]: Start accepts. Automaton has 14480 states. Word has length 121 [2021-01-20 12:04:52,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:04:52,616 INFO L481 AbstractCegarLoop]: Abstraction has 14480 states. [2021-01-20 12:04:52,616 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) [2021-01-20 12:04:52,616 INFO L276 IsEmpty]: Start isEmpty. Operand 14480 states. [2021-01-20 12:04:52,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-20 12:04:52,629 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:04:52,629 INFO L504 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] [2021-01-20 12:04:52,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 183 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable188 [2021-01-20 12:04:52,830 INFO L429 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:04:52,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:04:52,830 INFO L82 PathProgramCache]: Analyzing trace with hash 206746715, now seen corresponding path program 178 times [2021-01-20 12:04:52,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:04:52,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763075444] [2021-01-20 12:04:52,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:04:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:53,510 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:53,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763075444] [2021-01-20 12:04:53,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861815544] [2021-01-20 12:04:53,511 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 [2021-01-20 12:04:53,594 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:04:53,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:04:53,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-20 12:04:53,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:04:53,630 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:04:53,685 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:04:53,713 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:53,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:04:53,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2021-01-20 12:04:53,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050061730] [2021-01-20 12:04:53,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-20 12:04:53,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:04:53,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-20 12:04:53,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2021-01-20 12:04:53,715 INFO L87 Difference]: Start difference. First operand 14480 states. Second operand has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:04:54,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:04:54,953 INFO L93 Difference]: Finished difference Result 14800 states and 32580 transitions. [2021-01-20 12:04:54,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-01-20 12:04:54,953 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:04:54,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:04:54,968 INFO L225 Difference]: With dead ends: 14800 [2021-01-20 12:04:54,969 INFO L226 Difference]: Without dead ends: 14530 [2021-01-20 12:04:54,969 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=686, Invalid=2176, Unknown=0, NotChecked=0, Total=2862 [2021-01-20 12:04:54,969 INFO L78 Accepts]: Start accepts. Automaton has 14530 states. Word has length 121 [2021-01-20 12:04:54,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:04:54,969 INFO L481 AbstractCegarLoop]: Abstraction has 14530 states. [2021-01-20 12:04:54,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:04:54,970 INFO L276 IsEmpty]: Start isEmpty. Operand 14530 states. [2021-01-20 12:04:54,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-20 12:04:54,983 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:04:54,983 INFO L504 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] [2021-01-20 12:04:55,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 184 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2021-01-20 12:04:55,184 INFO L429 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:04:55,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:04:55,185 INFO L82 PathProgramCache]: Analyzing trace with hash 231552521, now seen corresponding path program 179 times [2021-01-20 12:04:55,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:04:55,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871757511] [2021-01-20 12:04:55,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:04:55,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:55,656 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:55,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871757511] [2021-01-20 12:04:55,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790673133] [2021-01-20 12:04:55,656 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 [2021-01-20 12:04:55,743 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-01-20 12:04:55,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:04:55,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-20 12:04:55,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:04:55,815 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:04:55,845 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:55,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:04:55,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-01-20 12:04:55,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25768340] [2021-01-20 12:04:55,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-20 12:04:55,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:04:55,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-20 12:04:55,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2021-01-20 12:04:55,847 INFO L87 Difference]: Start difference. First operand 14530 states. 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) [2021-01-20 12:04:56,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:04:56,945 INFO L93 Difference]: Finished difference Result 14850 states and 32680 transitions. [2021-01-20 12:04:56,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-20 12:04:56,946 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 [2021-01-20 12:04:56,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:04:56,961 INFO L225 Difference]: With dead ends: 14850 [2021-01-20 12:04:56,961 INFO L226 Difference]: Without dead ends: 14580 [2021-01-20 12:04:56,961 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=698, Invalid=2164, Unknown=0, NotChecked=0, Total=2862 [2021-01-20 12:04:56,961 INFO L78 Accepts]: Start accepts. Automaton has 14580 states. Word has length 121 [2021-01-20 12:04:56,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:04:56,962 INFO L481 AbstractCegarLoop]: Abstraction has 14580 states. [2021-01-20 12:04:56,962 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) [2021-01-20 12:04:56,962 INFO L276 IsEmpty]: Start isEmpty. Operand 14580 states. [2021-01-20 12:04:56,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-20 12:04:56,974 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:04:56,974 INFO L504 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] [2021-01-20 12:04:57,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable190 [2021-01-20 12:04:57,177 INFO L429 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:04:57,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:04:57,177 INFO L82 PathProgramCache]: Analyzing trace with hash 341305561, now seen corresponding path program 180 times [2021-01-20 12:04:57,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:04:57,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630996488] [2021-01-20 12:04:57,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:04:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:57,677 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:57,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630996488] [2021-01-20 12:04:57,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004432604] [2021-01-20 12:04:57,677 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 [2021-01-20 12:04:57,769 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-01-20 12:04:57,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:04:57,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-20 12:04:57,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:04:57,805 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:04:57,861 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:04:57,884 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:57,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:04:57,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2021-01-20 12:04:57,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942074167] [2021-01-20 12:04:57,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-20 12:04:57,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:04:57,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-20 12:04:57,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2021-01-20 12:04:57,887 INFO L87 Difference]: Start difference. First operand 14580 states. Second operand has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:04:59,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:04:59,231 INFO L93 Difference]: Finished difference Result 14900 states and 32780 transitions. [2021-01-20 12:04:59,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-01-20 12:04:59,232 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:04:59,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:04:59,247 INFO L225 Difference]: With dead ends: 14900 [2021-01-20 12:04:59,247 INFO L226 Difference]: Without dead ends: 14630 [2021-01-20 12:04:59,248 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 655 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=723, Invalid=2357, Unknown=0, NotChecked=0, Total=3080 [2021-01-20 12:04:59,248 INFO L78 Accepts]: Start accepts. Automaton has 14630 states. Word has length 121 [2021-01-20 12:04:59,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:04:59,248 INFO L481 AbstractCegarLoop]: Abstraction has 14630 states. [2021-01-20 12:04:59,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:04:59,248 INFO L276 IsEmpty]: Start isEmpty. Operand 14630 states. [2021-01-20 12:04:59,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-20 12:04:59,262 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:04:59,262 INFO L504 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] [2021-01-20 12:04:59,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191,186 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:04:59,464 INFO L429 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:04:59,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:04:59,465 INFO L82 PathProgramCache]: Analyzing trace with hash -154530809, now seen corresponding path program 181 times [2021-01-20 12:04:59,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:04:59,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000707556] [2021-01-20 12:04:59,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:04:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:04:59,925 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:04:59,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000707556] [2021-01-20 12:04:59,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034283651] [2021-01-20 12:04:59,926 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 [2021-01-20 12:05:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:05:00,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-20 12:05:00,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:05:00,228 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:05:00,247 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:05:00,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:05:00,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-01-20 12:05:00,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115336953] [2021-01-20 12:05:00,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-20 12:05:00,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:05:00,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-20 12:05:00,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2021-01-20 12:05:00,248 INFO L87 Difference]: Start difference. First operand 14630 states. 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) [2021-01-20 12:05:01,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:05:01,482 INFO L93 Difference]: Finished difference Result 14950 states and 32880 transitions. [2021-01-20 12:05:01,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-01-20 12:05:01,483 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 [2021-01-20 12:05:01,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:05:01,497 INFO L225 Difference]: With dead ends: 14950 [2021-01-20 12:05:01,498 INFO L226 Difference]: Without dead ends: 14680 [2021-01-20 12:05:01,498 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=749, Invalid=2331, Unknown=0, NotChecked=0, Total=3080 [2021-01-20 12:05:01,498 INFO L78 Accepts]: Start accepts. Automaton has 14680 states. Word has length 121 [2021-01-20 12:05:01,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:05:01,498 INFO L481 AbstractCegarLoop]: Abstraction has 14680 states. [2021-01-20 12:05:01,498 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) [2021-01-20 12:05:01,499 INFO L276 IsEmpty]: Start isEmpty. Operand 14680 states. [2021-01-20 12:05:01,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-20 12:05:01,511 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:05:01,511 INFO L504 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] [2021-01-20 12:05:01,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,187 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:05:01,712 INFO L429 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:05:01,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:05:01,713 INFO L82 PathProgramCache]: Analyzing trace with hash 549389015, now seen corresponding path program 182 times [2021-01-20 12:05:01,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:05:01,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584109601] [2021-01-20 12:05:01,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:05:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:05:02,213 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:05:02,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584109601] [2021-01-20 12:05:02,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805748428] [2021-01-20 12:05:02,213 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 [2021-01-20 12:05:02,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:05:02,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:05:02,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-20 12:05:02,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:05:02,332 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:05:02,388 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:05:02,410 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:05:02,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:05:02,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2021-01-20 12:05:02,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788342668] [2021-01-20 12:05:02,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-20 12:05:02,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:05:02,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-20 12:05:02,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2021-01-20 12:05:02,411 INFO L87 Difference]: Start difference. First operand 14680 states. Second operand has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:05:03,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:05:03,936 INFO L93 Difference]: Finished difference Result 15000 states and 32980 transitions. [2021-01-20 12:05:03,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-01-20 12:05:03,937 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:05:03,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:05:03,953 INFO L225 Difference]: With dead ends: 15000 [2021-01-20 12:05:03,953 INFO L226 Difference]: Without dead ends: 14730 [2021-01-20 12:05:03,954 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=776, Invalid=2530, Unknown=0, NotChecked=0, Total=3306 [2021-01-20 12:05:03,954 INFO L78 Accepts]: Start accepts. Automaton has 14730 states. Word has length 121 [2021-01-20 12:05:03,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:05:03,954 INFO L481 AbstractCegarLoop]: Abstraction has 14730 states. [2021-01-20 12:05:03,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:05:03,954 INFO L276 IsEmpty]: Start isEmpty. Operand 14730 states. [2021-01-20 12:05:03,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-20 12:05:03,968 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:05:03,968 INFO L504 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] [2021-01-20 12:05:04,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 188 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable193 [2021-01-20 12:05:04,169 INFO L429 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:05:04,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:05:04,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1434232709, now seen corresponding path program 183 times [2021-01-20 12:05:04,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:05:04,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623272209] [2021-01-20 12:05:04,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:05:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:05:04,628 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:05:04,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623272209] [2021-01-20 12:05:04,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851229188] [2021-01-20 12:05:04,628 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 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 [2021-01-20 12:05:04,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-01-20 12:05:04,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:05:04,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 34 conjunts are in the unsatisfiable core [2021-01-20 12:05:04,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:05:04,785 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:05:04,808 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:05:04,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:05:04,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-01-20 12:05:04,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659867563] [2021-01-20 12:05:04,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-20 12:05:04,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:05:04,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-20 12:05:04,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2021-01-20 12:05:04,809 INFO L87 Difference]: Start difference. First operand 14730 states. 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) [2021-01-20 12:05:06,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:05:06,140 INFO L93 Difference]: Finished difference Result 15050 states and 33080 transitions. [2021-01-20 12:05:06,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-01-20 12:05:06,141 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 [2021-01-20 12:05:06,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:05:06,156 INFO L225 Difference]: With dead ends: 15050 [2021-01-20 12:05:06,156 INFO L226 Difference]: Without dead ends: 14780 [2021-01-20 12:05:06,156 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=816, Invalid=2490, Unknown=0, NotChecked=0, Total=3306 [2021-01-20 12:05:06,156 INFO L78 Accepts]: Start accepts. Automaton has 14780 states. Word has length 121 [2021-01-20 12:05:06,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:05:06,157 INFO L481 AbstractCegarLoop]: Abstraction has 14780 states. [2021-01-20 12:05:06,157 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) [2021-01-20 12:05:06,157 INFO L276 IsEmpty]: Start isEmpty. Operand 14780 states. [2021-01-20 12:05:06,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-20 12:05:06,169 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:05:06,169 INFO L504 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] [2021-01-20 12:05:06,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194,189 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:05:06,370 INFO L429 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:05:06,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:05:06,371 INFO L82 PathProgramCache]: Analyzing trace with hash 841015893, now seen corresponding path program 184 times [2021-01-20 12:05:06,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:05:06,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080362295] [2021-01-20 12:05:06,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:05:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:05:06,841 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:05:06,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080362295] [2021-01-20 12:05:06,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898104702] [2021-01-20 12:05:06,850 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 [2021-01-20 12:05:06,928 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:05:06,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:05:06,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-20 12:05:06,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:05:06,966 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:05:07,020 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:05:07,197 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:05:07,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:05:07,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2021-01-20 12:05:07,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171316516] [2021-01-20 12:05:07,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-20 12:05:07,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:05:07,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-20 12:05:07,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2021-01-20 12:05:07,198 INFO L87 Difference]: Start difference. First operand 14780 states. Second operand has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:05:08,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:05:08,798 INFO L93 Difference]: Finished difference Result 15100 states and 33180 transitions. [2021-01-20 12:05:08,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-01-20 12:05:08,799 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:05:08,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:05:08,815 INFO L225 Difference]: With dead ends: 15100 [2021-01-20 12:05:08,815 INFO L226 Difference]: Without dead ends: 14830 [2021-01-20 12:05:08,816 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=845, Invalid=2695, Unknown=0, NotChecked=0, Total=3540 [2021-01-20 12:05:08,816 INFO L78 Accepts]: Start accepts. Automaton has 14830 states. Word has length 121 [2021-01-20 12:05:08,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:05:08,816 INFO L481 AbstractCegarLoop]: Abstraction has 14830 states. [2021-01-20 12:05:08,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:05:08,816 INFO L276 IsEmpty]: Start isEmpty. Operand 14830 states. [2021-01-20 12:05:08,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-20 12:05:08,828 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:05:08,829 INFO L504 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] [2021-01-20 12:05:09,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,190 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:05:09,029 INFO L429 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:05:09,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:05:09,030 INFO L82 PathProgramCache]: Analyzing trace with hash 668330115, now seen corresponding path program 185 times [2021-01-20 12:05:09,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:05:09,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432726926] [2021-01-20 12:05:09,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:05:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:05:09,466 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:05:09,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432726926] [2021-01-20 12:05:09,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617854977] [2021-01-20 12:05:09,467 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 [2021-01-20 12:05:09,556 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-01-20 12:05:09,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:05:09,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-20 12:05:09,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:05:09,612 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:05:09,629 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:05:09,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:05:09,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-01-20 12:05:09,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400985106] [2021-01-20 12:05:09,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-20 12:05:09,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:05:09,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-20 12:05:09,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2021-01-20 12:05:09,630 INFO L87 Difference]: Start difference. First operand 14830 states. 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) [2021-01-20 12:05:11,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:05:11,047 INFO L93 Difference]: Finished difference Result 15150 states and 33280 transitions. [2021-01-20 12:05:11,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-01-20 12:05:11,048 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 [2021-01-20 12:05:11,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:05:11,063 INFO L225 Difference]: With dead ends: 15150 [2021-01-20 12:05:11,063 INFO L226 Difference]: Without dead ends: 14880 [2021-01-20 12:05:11,063 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=899, Invalid=2641, Unknown=0, NotChecked=0, Total=3540 [2021-01-20 12:05:11,063 INFO L78 Accepts]: Start accepts. Automaton has 14880 states. Word has length 121 [2021-01-20 12:05:11,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:05:11,064 INFO L481 AbstractCegarLoop]: Abstraction has 14880 states. [2021-01-20 12:05:11,064 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) [2021-01-20 12:05:11,064 INFO L276 IsEmpty]: Start isEmpty. Operand 14880 states. [2021-01-20 12:05:11,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-20 12:05:11,076 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:05:11,076 INFO L504 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] [2021-01-20 12:05:11,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196,191 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:05:11,277 INFO L429 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:05:11,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:05:11,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1464965293, now seen corresponding path program 186 times [2021-01-20 12:05:11,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:05:11,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974566824] [2021-01-20 12:05:11,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:05:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:05:11,729 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:05:11,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974566824] [2021-01-20 12:05:11,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865346921] [2021-01-20 12:05:11,730 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 [2021-01-20 12:05:11,823 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-01-20 12:05:11,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:05:11,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 32 conjunts are in the unsatisfiable core [2021-01-20 12:05:11,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:05:11,931 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:05:11,947 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:05:11,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:05:11,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2021-01-20 12:05:11,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966196266] [2021-01-20 12:05:11,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-20 12:05:11,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:05:11,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-20 12:05:11,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2021-01-20 12:05:11,948 INFO L87 Difference]: Start difference. First operand 14880 states. Second operand has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:05:13,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:05:13,720 INFO L93 Difference]: Finished difference Result 15200 states and 33380 transitions. [2021-01-20 12:05:13,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-01-20 12:05:13,721 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:05:13,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:05:13,736 INFO L225 Difference]: With dead ends: 15200 [2021-01-20 12:05:13,737 INFO L226 Difference]: Without dead ends: 14930 [2021-01-20 12:05:13,737 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=882, Invalid=2900, Unknown=0, NotChecked=0, Total=3782 [2021-01-20 12:05:13,737 INFO L78 Accepts]: Start accepts. Automaton has 14930 states. Word has length 121 [2021-01-20 12:05:13,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:05:13,737 INFO L481 AbstractCegarLoop]: Abstraction has 14930 states. [2021-01-20 12:05:13,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:05:13,737 INFO L276 IsEmpty]: Start isEmpty. Operand 14930 states. [2021-01-20 12:05:13,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-20 12:05:13,750 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:05:13,750 INFO L504 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] [2021-01-20 12:05:13,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,192 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:05:13,951 INFO L429 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:05:13,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:05:13,951 INFO L82 PathProgramCache]: Analyzing trace with hash 425635585, now seen corresponding path program 187 times [2021-01-20 12:05:13,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:05:13,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233881014] [2021-01-20 12:05:13,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:05:13,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:05:14,390 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:05:14,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233881014] [2021-01-20 12:05:14,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188724278] [2021-01-20 12:05:14,390 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 [2021-01-20 12:05:14,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:05:14,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-20 12:05:14,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:05:14,696 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:05:14,721 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:05:14,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:05:14,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-01-20 12:05:14,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218932454] [2021-01-20 12:05:14,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-20 12:05:14,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:05:14,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-20 12:05:14,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2021-01-20 12:05:14,724 INFO L87 Difference]: Start difference. First operand 14930 states. 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) [2021-01-20 12:05:16,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:05:16,169 INFO L93 Difference]: Finished difference Result 15250 states and 33480 transitions. [2021-01-20 12:05:16,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-01-20 12:05:16,170 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 [2021-01-20 12:05:16,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:05:16,189 INFO L225 Difference]: With dead ends: 15250 [2021-01-20 12:05:16,190 INFO L226 Difference]: Without dead ends: 14980 [2021-01-20 12:05:16,190 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=998, Invalid=2784, Unknown=0, NotChecked=0, Total=3782 [2021-01-20 12:05:16,190 INFO L78 Accepts]: Start accepts. Automaton has 14980 states. Word has length 121 [2021-01-20 12:05:16,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:05:16,191 INFO L481 AbstractCegarLoop]: Abstraction has 14980 states. [2021-01-20 12:05:16,191 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) [2021-01-20 12:05:16,191 INFO L276 IsEmpty]: Start isEmpty. Operand 14980 states. [2021-01-20 12:05:16,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-20 12:05:16,210 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:05:16,210 INFO L504 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] [2021-01-20 12:05:16,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198,193 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 12:05:16,424 INFO L429 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:05:16,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:05:16,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1647342033, now seen corresponding path program 188 times [2021-01-20 12:05:16,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:05:16,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311867196] [2021-01-20 12:05:16,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:05:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:05:17,535 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:05:17,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311867196] [2021-01-20 12:05:17,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530330507] [2021-01-20 12:05:17,536 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 [2021-01-20 12:05:17,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 12:05:17,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:05:17,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-20 12:05:17,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:05:17,657 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:05:17,722 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:05:17,748 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:05:17,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:05:17,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2021-01-20 12:05:17,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852020021] [2021-01-20 12:05:17,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-20 12:05:17,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:05:17,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-20 12:05:17,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2021-01-20 12:05:17,757 INFO L87 Difference]: Start difference. First operand 14980 states. Second operand has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:05:19,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:05:19,437 INFO L93 Difference]: Finished difference Result 15300 states and 33580 transitions. [2021-01-20 12:05:19,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-01-20 12:05:19,438 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:05:19,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:05:19,455 INFO L225 Difference]: With dead ends: 15300 [2021-01-20 12:05:19,455 INFO L226 Difference]: Without dead ends: 15030 [2021-01-20 12:05:19,455 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1031, Invalid=3001, Unknown=0, NotChecked=0, Total=4032 [2021-01-20 12:05:19,456 INFO L78 Accepts]: Start accepts. Automaton has 15030 states. Word has length 121 [2021-01-20 12:05:19,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:05:19,456 INFO L481 AbstractCegarLoop]: Abstraction has 15030 states. [2021-01-20 12:05:19,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:05:19,456 INFO L276 IsEmpty]: Start isEmpty. Operand 15030 states. [2021-01-20 12:05:19,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-20 12:05:19,472 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:05:19,473 INFO L504 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] [2021-01-20 12:05:19,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 194 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2021-01-20 12:05:19,685 INFO L429 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:05:19,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:05:19,686 INFO L82 PathProgramCache]: Analyzing trace with hash 557308671, now seen corresponding path program 189 times [2021-01-20 12:05:19,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:05:19,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402630389] [2021-01-20 12:05:19,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:05:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:05:20,092 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:05:20,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402630389] [2021-01-20 12:05:20,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402331882] [2021-01-20 12:05:20,093 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 [2021-01-20 12:05:20,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-01-20 12:05:20,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:05:20,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-20 12:05:20,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:05:20,234 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:05:20,253 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:05:20,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:05:20,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-01-20 12:05:20,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092414577] [2021-01-20 12:05:20,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-20 12:05:20,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:05:20,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-20 12:05:20,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2021-01-20 12:05:20,254 INFO L87 Difference]: Start difference. First operand 15030 states. 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) [2021-01-20 12:05:21,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:05:21,888 INFO L93 Difference]: Finished difference Result 15350 states and 33680 transitions. [2021-01-20 12:05:21,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-01-20 12:05:21,889 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 [2021-01-20 12:05:21,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:05:21,904 INFO L225 Difference]: With dead ends: 15350 [2021-01-20 12:05:21,905 INFO L226 Difference]: Without dead ends: 15080 [2021-01-20 12:05:21,905 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1110 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1113, Invalid=2919, Unknown=0, NotChecked=0, Total=4032 [2021-01-20 12:05:21,905 INFO L78 Accepts]: Start accepts. Automaton has 15080 states. Word has length 121 [2021-01-20 12:05:21,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:05:21,905 INFO L481 AbstractCegarLoop]: Abstraction has 15080 states. [2021-01-20 12:05:21,905 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) [2021-01-20 12:05:21,906 INFO L276 IsEmpty]: Start isEmpty. Operand 15080 states. [2021-01-20 12:05:21,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-20 12:05:21,918 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:05:21,918 INFO L504 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] [2021-01-20 12:05:22,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable200 [2021-01-20 12:05:22,119 INFO L429 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:05:22,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:05:22,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1476911567, now seen corresponding path program 190 times [2021-01-20 12:05:22,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:05:22,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534919753] [2021-01-20 12:05:22,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:05:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:05:22,565 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:05:22,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534919753] [2021-01-20 12:05:22,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317514080] [2021-01-20 12:05:22,565 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 [2021-01-20 12:05:22,649 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 12:05:22,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:05:22,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-20 12:05:22,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:05:22,689 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-20 12:05:22,745 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:05:22,760 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:05:22,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:05:22,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2021-01-20 12:05:22,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785396149] [2021-01-20 12:05:22,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-20 12:05:22,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:05:22,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-20 12:05:22,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2021-01-20 12:05:22,761 INFO L87 Difference]: Start difference. First operand 15080 states. Second operand has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:05:24,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:05:24,751 INFO L93 Difference]: Finished difference Result 15440 states and 33860 transitions. [2021-01-20 12:05:24,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-01-20 12:05:24,752 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have 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 [2021-01-20 12:05:24,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:05:24,767 INFO L225 Difference]: With dead ends: 15440 [2021-01-20 12:05:24,767 INFO L226 Difference]: Without dead ends: 15170 [2021-01-20 12:05:24,768 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1145 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1148, Invalid=3142, Unknown=0, NotChecked=0, Total=4290 [2021-01-20 12:05:24,768 INFO L78 Accepts]: Start accepts. Automaton has 15170 states. Word has length 121 [2021-01-20 12:05:24,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:05:24,768 INFO L481 AbstractCegarLoop]: Abstraction has 15170 states. [2021-01-20 12:05:24,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 12:05:24,768 INFO L276 IsEmpty]: Start isEmpty. Operand 15170 states. [2021-01-20 12:05:24,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-20 12:05:24,781 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:05:24,781 INFO L504 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] [2021-01-20 12:05:24,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 196 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2021-01-20 12:05:24,982 INFO L429 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:05:24,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:05:24,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1828987485, now seen corresponding path program 191 times [2021-01-20 12:05:24,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:05:24,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173587809] [2021-01-20 12:05:24,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:05:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:05:25,416 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:05:25,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173587809] [2021-01-20 12:05:25,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412850636] [2021-01-20 12:05:25,417 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 [2021-01-20 12:05:25,504 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-01-20 12:05:25,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:05:25,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-20 12:05:25,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:05:25,564 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:05:25,578 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:05:25,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:05:25,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-01-20 12:05:25,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810417478] [2021-01-20 12:05:25,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-20 12:05:25,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:05:25,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-20 12:05:25,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2021-01-20 12:05:25,579 INFO L87 Difference]: Start difference. First operand 15170 states. 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) [2021-01-20 12:05:27,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:05:27,260 INFO L93 Difference]: Finished difference Result 16642 states and 37224 transitions. [2021-01-20 12:05:27,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-01-20 12:05:27,261 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 [2021-01-20 12:05:27,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:05:27,277 INFO L225 Difference]: With dead ends: 16642 [2021-01-20 12:05:27,278 INFO L226 Difference]: Without dead ends: 16372 [2021-01-20 12:05:27,278 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1216 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1245, Invalid=3045, Unknown=0, NotChecked=0, Total=4290 [2021-01-20 12:05:27,278 INFO L78 Accepts]: Start accepts. Automaton has 16372 states. Word has length 121 [2021-01-20 12:05:27,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:05:27,278 INFO L481 AbstractCegarLoop]: Abstraction has 16372 states. [2021-01-20 12:05:27,278 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) [2021-01-20 12:05:27,279 INFO L276 IsEmpty]: Start isEmpty. Operand 16372 states. [2021-01-20 12:05:27,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-20 12:05:27,291 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:05:27,291 INFO L504 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] [2021-01-20 12:05:27,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 197 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2021-01-20 12:05:27,492 INFO L429 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:05:27,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:05:27,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1826014255, now seen corresponding path program 192 times [2021-01-20 12:05:27,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:05:27,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002817375] [2021-01-20 12:05:27,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:05:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 12:05:28,072 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:05:28,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002817375] [2021-01-20 12:05:28,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932484166] [2021-01-20 12:05:28,072 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 [2021-01-20 12:05:28,161 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-01-20 12:05:28,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 12:05:28,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-20 12:05:28,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 12:05:28,231 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-20 12:05:28,245 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 12:05:28,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 12:05:28,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-01-20 12:05:28,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703560195] [2021-01-20 12:05:28,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-20 12:05:28,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 12:05:28,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-20 12:05:28,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2021-01-20 12:05:28,246 INFO L87 Difference]: Start difference. First operand 16372 states. 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) [2021-01-20 12:05:30,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 12:05:30,217 INFO L93 Difference]: Finished difference Result 15924 states and 35066 transitions. [2021-01-20 12:05:30,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-01-20 12:05:30,218 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 [2021-01-20 12:05:30,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 12:05:30,233 INFO L225 Difference]: With dead ends: 15924 [2021-01-20 12:05:30,233 INFO L226 Difference]: Without dead ends: 15385 [2021-01-20 12:05:30,233 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1163 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1147, Invalid=3275, Unknown=0, NotChecked=0, Total=4422 [2021-01-20 12:05:30,233 INFO L78 Accepts]: Start accepts. Automaton has 15385 states. Word has length 121 [2021-01-20 12:05:30,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 12:05:30,234 INFO L481 AbstractCegarLoop]: Abstraction has 15385 states. [2021-01-20 12:05:30,234 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) [2021-01-20 12:05:30,234 INFO L276 IsEmpty]: Start isEmpty. Operand 15385 states. [2021-01-20 12:05:30,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-01-20 12:05:30,247 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 12:05:30,247 INFO L504 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] [2021-01-20 12:05:30,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable203 [2021-01-20 12:05:30,448 INFO L429 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 12:05:30,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 12:05:30,448 INFO L82 PathProgramCache]: Analyzing trace with hash -367058495, now seen corresponding path program 193 times [2021-01-20 12:05:30,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 12:05:30,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649429326] [2021-01-20 12:05:30,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 12:05:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-20 12:05:30,459 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-20 12:05:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-20 12:05:30,471 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-20 12:05:30,559 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-20 12:05:30,559 INFO L605 BasicCegarLoop]: Counterexample might be feasible [2021-01-20 12:05:30,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-01-20 12:05:30,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 12:05:30 BasicIcfg [2021-01-20 12:05:30,734 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 12:05:30,737 INFO L168 Benchmark]: Toolchain (without parser) took 311230.71 ms. Allocated memory was 302.0 MB in the beginning and 3.1 GB in the end (delta: 2.8 GB). Free memory was 275.0 MB in the beginning and 1.1 GB in the end (delta: -835.5 MB). Peak memory consumption was 2.0 GB. Max. memory is 16.0 GB. [2021-01-20 12:05:30,737 INFO L168 Benchmark]: CDTParser took 0.68 ms. Allocated memory is still 302.0 MB. Free memory is still 270.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 12:05:30,738 INFO L168 Benchmark]: CACSL2BoogieTranslator took 659.19 ms. Allocated memory is still 302.0 MB. Free memory was 274.9 MB in the beginning and 276.7 MB in the end (delta: -1.8 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.0 GB. [2021-01-20 12:05:30,738 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.00 ms. Allocated memory is still 302.0 MB. Free memory was 276.7 MB in the beginning and 275.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 12:05:30,738 INFO L168 Benchmark]: Boogie Preprocessor took 33.05 ms. Allocated memory is still 302.0 MB. Free memory was 275.6 MB in the beginning and 273.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 12:05:30,739 INFO L168 Benchmark]: RCFGBuilder took 570.17 ms. Allocated memory is still 302.0 MB. Free memory was 273.5 MB in the beginning and 252.6 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-01-20 12:05:30,739 INFO L168 Benchmark]: TraceAbstraction took 309911.90 ms. Allocated memory was 302.0 MB in the beginning and 3.1 GB in the end (delta: 2.8 GB). Free memory was 252.6 MB in the beginning and 1.1 GB in the end (delta: -857.9 MB). Peak memory consumption was 1.9 GB. Max. memory is 16.0 GB. [2021-01-20 12:05:30,741 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68 ms. Allocated memory is still 302.0 MB. Free memory is still 270.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 659.19 ms. Allocated memory is still 302.0 MB. Free memory was 274.9 MB in the beginning and 276.7 MB in the end (delta: -1.8 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 48.00 ms. Allocated memory is still 302.0 MB. Free memory was 276.7 MB in the beginning and 275.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 33.05 ms. Allocated memory is still 302.0 MB. Free memory was 275.6 MB in the beginning and 273.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 570.17 ms. Allocated memory is still 302.0 MB. Free memory was 273.5 MB in the beginning and 252.6 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 309911.90 ms. Allocated memory was 302.0 MB in the beginning and 3.1 GB in the end (delta: 2.8 GB). Free memory was 252.6 MB in the beginning and 1.1 GB in the end (delta: -857.9 MB). Peak memory consumption was 1.9 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 693]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L694] 0 int i = 3, j = 6; VAL [i=3, j=6] [L712] 0 pthread_t id1, id2; VAL [i=3, j=6] [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arg={0:0}, i=3, j=6] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, i=7, j=6, k=0] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, i=7, j=6, k=1] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, i=7, j=6, k=1] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=1] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=1, k=0] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L716] 0 int condI = i >= (2*10 +6); VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=1, k=0] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=1] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=2, k=1] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=2] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2, k++=1] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2, k++=1] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=2] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3, k++=2] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3, k++=2] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=4, k=3] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=3] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4, k++=3] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4, k++=3] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=5, k=4] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=4] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5, k++=4] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5, k++=4] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=5] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=5, k=6] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6, k++=5] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6, k++=5] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=6] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=7, k=6] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=6, k=7] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7, k++=6] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7, k++=6] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=7] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=8, k=7] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=7] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8, k++=7] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8, k++=7] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=8] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=9, k=8] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=8, k=9] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9, k++=8] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9, k++=8] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=9, k=9] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] [L719] 0 int condJ = j >= (2*10 +6); VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] [L721] COND TRUE 0 condI || condJ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] [L693] COND FALSE 0 !(0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] [L693] 0 __assert_fail ("0", "triangular-longer-2.c", 8, __extension__ __PRETTY_FUNCTION__) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 309.6s, OverallIterations: 205, TraceHistogramMax: 10, AutomataDifference: 173.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 18443 SDtfs, 132263 SDslu, 157426 SDs, 0 SdLazy, 30130 SolverSat, 20644 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 30.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25952 GetRequests, 17764 SyntacticMatches, 191 SemanticMatches, 7997 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82783 ImplicationChecksByTransitivity, 175.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16372occurred in iteration=203, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.4s SsaConstructionTime, 7.8s SatisfiabilityAnalysisTime, 70.9s InterpolantComputationTime, 36272 NumberOfCodeBlocks, 36272 NumberOfCodeBlocksAsserted, 1083 NumberOfCheckSat, 35745 ConstructedInterpolants, 0 QuantifiedInterpolants, 14155799 SizeOfPredicates, 3189 NumberOfNonLiveVariables, 37872 ConjunctsInSsa, 4017 ConjunctsInUnsatCore, 401 InterpolantComputations, 7 PerfectInterpolantSequences, 0/67972 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 proved your program to be incorrect! Received shutdown request...