/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -i ../../../trunk/examples/svcomp/pthread/triangular-longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 03:29:12,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 03:29:12,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 03:29:12,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 03:29:12,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 03:29:12,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 03:29:12,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 03:29:12,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 03:29:12,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 03:29:12,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 03:29:12,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 03:29:12,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 03:29:12,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 03:29:12,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 03:29:12,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 03:29:12,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 03:29:12,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 03:29:12,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 03:29:12,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 03:29:12,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 03:29:12,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 03:29:12,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 03:29:12,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 03:29:12,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 03:29:12,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-12 03:29:12,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-12 03:29:12,605 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-12 03:29:12,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-12 03:29:12,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-12 03:29:12,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-12 03:29:12,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 03:29:12,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 03:29:12,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 03:29:12,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 03:29:12,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 03:29:12,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 03:29:12,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 03:29:12,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 03:29:12,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 03:29:12,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 03:29:12,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 03:29:12,624 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf [2020-11-12 03:29:12,664 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 03:29:12,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 03:29:12,668 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 03:29:12,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 03:29:12,671 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 03:29:12,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 03:29:12,672 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 03:29:12,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 03:29:12,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 03:29:12,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 03:29:12,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 03:29:12,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 03:29:12,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 03:29:12,676 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 03:29:12,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 03:29:12,676 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 03:29:12,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 03:29:12,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 03:29:12,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 03:29:12,677 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 03:29:12,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 03:29:12,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 03:29:12,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 03:29:12,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 03:29:12,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 03:29:12,680 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 03:29:12,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 03:29:12,681 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-12 03:29:12,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 03:29:12,681 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-12 03:29:12,682 INFO L138 SettingsManager]: * Sleep set reduction in concurrent analysis=DELAY_SET WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 03:29:13,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 03:29:13,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 03:29:13,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 03:29:13,265 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 03:29:13,266 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 03:29:13,267 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-1.i [2020-11-12 03:29:13,392 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1807fe4ec/aac24a1a73e54453be9312f1270582dd/FLAGccb075917 [2020-11-12 03:29:14,251 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 03:29:14,252 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i [2020-11-12 03:29:14,270 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1807fe4ec/aac24a1a73e54453be9312f1270582dd/FLAGccb075917 [2020-11-12 03:29:14,482 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1807fe4ec/aac24a1a73e54453be9312f1270582dd [2020-11-12 03:29:14,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 03:29:14,496 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 03:29:14,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 03:29:14,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 03:29:14,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 03:29:14,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 03:29:14" (1/1) ... [2020-11-12 03:29:14,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@740c7702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:14, skipping insertion in model container [2020-11-12 03:29:14,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 03:29:14" (1/1) ... [2020-11-12 03:29:14,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 03:29:14,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 03:29:15,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 03:29:15,045 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 03:29:15,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 03:29:15,233 INFO L208 MainTranslator]: Completed translation [2020-11-12 03:29:15,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:15 WrapperNode [2020-11-12 03:29:15,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 03:29:15,235 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 03:29:15,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 03:29:15,236 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 03:29:15,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:15" (1/1) ... [2020-11-12 03:29:15,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:15" (1/1) ... [2020-11-12 03:29:15,286 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 03:29:15,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 03:29:15,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 03:29:15,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 03:29:15,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:15" (1/1) ... [2020-11-12 03:29:15,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:15" (1/1) ... [2020-11-12 03:29:15,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:15" (1/1) ... [2020-11-12 03:29:15,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:15" (1/1) ... [2020-11-12 03:29:15,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:15" (1/1) ... [2020-11-12 03:29:15,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:15" (1/1) ... [2020-11-12 03:29:15,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:15" (1/1) ... [2020-11-12 03:29:15,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 03:29:15,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 03:29:15,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 03:29:15,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 03:29:15,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 03:29:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-11-12 03:29:15,444 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-11-12 03:29:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-11-12 03:29:15,444 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-11-12 03:29:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 03:29:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 03:29:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 03:29:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 03:29:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 03:29:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 03:29:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 03:29:15,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 03:29:15,447 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-12 03:29:15,946 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 03:29:15,947 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-12 03:29:15,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 03:29:15 BoogieIcfgContainer [2020-11-12 03:29:15,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 03:29:15,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 03:29:15,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 03:29:15,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 03:29:15,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 03:29:14" (1/3) ... [2020-11-12 03:29:15,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab097db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 03:29:15, skipping insertion in model container [2020-11-12 03:29:15,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:15" (2/3) ... [2020-11-12 03:29:15,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab097db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 03:29:15, skipping insertion in model container [2020-11-12 03:29:15,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 03:29:15" (3/3) ... [2020-11-12 03:29:15,962 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2020-11-12 03:29:15,982 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 03:29:15,982 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 03:29:15,987 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 03:29:15,989 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 03:29:16,024 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,024 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,025 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,025 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,025 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,025 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,025 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,026 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,026 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,026 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,026 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,027 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,027 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,027 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,028 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,028 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,028 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,028 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,029 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,029 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,029 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,029 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,030 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,030 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,030 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,030 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,030 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,031 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,031 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,031 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,032 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,032 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,032 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,032 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,032 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,032 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,033 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,033 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,033 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,034 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,034 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,034 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,034 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,035 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,035 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,035 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,036 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,036 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,036 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,036 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,036 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,037 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,037 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,037 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,037 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,037 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,040 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,040 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,041 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,041 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,041 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,041 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,049 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,050 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,050 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,050 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,050 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,050 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:16,054 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 03:29:16,072 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-12 03:29:16,101 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 03:29:16,101 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 03:29:16,101 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 03:29:16,101 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 03:29:16,101 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 03:29:16,102 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 03:29:16,102 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 03:29:16,102 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 03:29:16,116 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 65 places, 64 transitions, 138 flow [2020-11-12 03:29:16,256 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1848 states, 1846 states have (on average 3.2183098591549295) internal successors, (5941), 1847 states have internal predecessors, (5941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:16,469 WARN L455 BasicCegarLoop]: Sleep Set Reduction Time: 208ms [2020-11-12 03:29:16,478 WARN L456 BasicCegarLoop]: Sleep set: input automaton has 1848 states, 1846 states have (on average 3.2183098591549295) internal successors, (5941), 1847 states have internal predecessors, (5941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:16,483 WARN L457 BasicCegarLoop]: Sleep set: output automaton has 1848 states, 1648 states have (on average 1.5078883495145632) internal successors, (2485), 1847 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:16,491 INFO L276 IsEmpty]: Start isEmpty. Operand has 1848 states, 1648 states have (on average 1.5078883495145632) internal successors, (2485), 1847 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:16,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-12 03:29:16,500 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:16,502 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:16,503 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:16,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:16,512 INFO L82 PathProgramCache]: Analyzing trace with hash 27863943, now seen corresponding path program 1 times [2020-11-12 03:29:16,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:16,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648571944] [2020-11-12 03:29:16,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:17,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:17,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648571944] [2020-11-12 03:29:17,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 03:29:17,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 03:29:17,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305008735] [2020-11-12 03:29:17,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 03:29:17,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:17,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 03:29:17,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-12 03:29:17,096 INFO L87 Difference]: Start difference. First operand has 1848 states, 1648 states have (on average 1.5078883495145632) internal successors, (2485), 1847 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:17,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:17,288 INFO L93 Difference]: Finished difference Result 3336 states and 4454 transitions. [2020-11-12 03:29:17,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-12 03:29:17,291 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2020-11-12 03:29:17,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:17,320 INFO L225 Difference]: With dead ends: 3336 [2020-11-12 03:29:17,320 INFO L226 Difference]: Without dead ends: 1272 [2020-11-12 03:29:17,322 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-12 03:29:17,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2020-11-12 03:29:17,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 760. [2020-11-12 03:29:17,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 680 states have (on average 1.638235294117647) internal successors, (1114), 759 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:17,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1114 transitions. [2020-11-12 03:29:17,494 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1114 transitions. Word has length 28 [2020-11-12 03:29:17,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:17,495 INFO L481 AbstractCegarLoop]: Abstraction has 760 states and 1114 transitions. [2020-11-12 03:29:17,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:17,496 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1114 transitions. [2020-11-12 03:29:17,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-12 03:29:17,504 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:17,504 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:17,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 03:29:17,505 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:17,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:17,509 INFO L82 PathProgramCache]: Analyzing trace with hash 168146404, now seen corresponding path program 1 times [2020-11-12 03:29:17,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:17,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070596086] [2020-11-12 03:29:17,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:17,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:17,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070596086] [2020-11-12 03:29:17,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 03:29:17,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 03:29:17,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385086908] [2020-11-12 03:29:17,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 03:29:17,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:17,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 03:29:17,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 03:29:17,738 INFO L87 Difference]: Start difference. First operand 760 states and 1114 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:17,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:17,909 INFO L93 Difference]: Finished difference Result 1119 states and 1772 transitions. [2020-11-12 03:29:17,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 03:29:17,910 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2020-11-12 03:29:17,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:17,915 INFO L225 Difference]: With dead ends: 1119 [2020-11-12 03:29:17,915 INFO L226 Difference]: Without dead ends: 728 [2020-11-12 03:29:17,916 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-11-12 03:29:17,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-11-12 03:29:17,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 684. [2020-11-12 03:29:17,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 620 states have (on average 1.696774193548387) internal successors, (1052), 683 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:17,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1052 transitions. [2020-11-12 03:29:17,949 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1052 transitions. Word has length 32 [2020-11-12 03:29:17,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:17,949 INFO L481 AbstractCegarLoop]: Abstraction has 684 states and 1052 transitions. [2020-11-12 03:29:17,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:17,950 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1052 transitions. [2020-11-12 03:29:17,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-12 03:29:17,951 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:17,952 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:17,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 03:29:17,952 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:17,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:17,953 INFO L82 PathProgramCache]: Analyzing trace with hash 961549801, now seen corresponding path program 1 times [2020-11-12 03:29:17,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:17,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576770120] [2020-11-12 03:29:17,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:18,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:18,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576770120] [2020-11-12 03:29:18,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 03:29:18,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-12 03:29:18,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006527470] [2020-11-12 03:29:18,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-12 03:29:18,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:18,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-12 03:29:18,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-12 03:29:18,208 INFO L87 Difference]: Start difference. First operand 684 states and 1052 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:18,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:18,432 INFO L93 Difference]: Finished difference Result 1560 states and 2528 transitions. [2020-11-12 03:29:18,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-12 03:29:18,434 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2020-11-12 03:29:18,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:18,442 INFO L225 Difference]: With dead ends: 1560 [2020-11-12 03:29:18,443 INFO L226 Difference]: Without dead ends: 1299 [2020-11-12 03:29:18,443 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-11-12 03:29:18,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2020-11-12 03:29:18,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 727. [2020-11-12 03:29:18,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 663 states have (on average 1.7134238310708898) internal successors, (1136), 726 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:18,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1136 transitions. [2020-11-12 03:29:18,480 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1136 transitions. Word has length 36 [2020-11-12 03:29:18,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:18,480 INFO L481 AbstractCegarLoop]: Abstraction has 727 states and 1136 transitions. [2020-11-12 03:29:18,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:18,481 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1136 transitions. [2020-11-12 03:29:18,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-12 03:29:18,483 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:18,484 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:18,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 03:29:18,484 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:18,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:18,485 INFO L82 PathProgramCache]: Analyzing trace with hash 661466183, now seen corresponding path program 2 times [2020-11-12 03:29:18,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:18,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011554581] [2020-11-12 03:29:18,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:18,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:18,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011554581] [2020-11-12 03:29:18,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 03:29:18,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 03:29:18,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698073673] [2020-11-12 03:29:18,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 03:29:18,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:18,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 03:29:18,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 03:29:18,681 INFO L87 Difference]: Start difference. First operand 727 states and 1136 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:18,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:18,972 INFO L93 Difference]: Finished difference Result 1111 states and 1800 transitions. [2020-11-12 03:29:18,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-12 03:29:18,974 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2020-11-12 03:29:18,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:18,980 INFO L225 Difference]: With dead ends: 1111 [2020-11-12 03:29:18,981 INFO L226 Difference]: Without dead ends: 911 [2020-11-12 03:29:18,981 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-11-12 03:29:18,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2020-11-12 03:29:19,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 795. [2020-11-12 03:29:19,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 731 states have (on average 1.7045143638850888) internal successors, (1246), 794 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:19,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1246 transitions. [2020-11-12 03:29:19,016 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1246 transitions. Word has length 36 [2020-11-12 03:29:19,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:19,018 INFO L481 AbstractCegarLoop]: Abstraction has 795 states and 1246 transitions. [2020-11-12 03:29:19,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:19,021 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1246 transitions. [2020-11-12 03:29:19,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-12 03:29:19,024 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:19,024 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:19,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 03:29:19,024 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:19,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:19,025 INFO L82 PathProgramCache]: Analyzing trace with hash -17785689, now seen corresponding path program 3 times [2020-11-12 03:29:19,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:19,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504958537] [2020-11-12 03:29:19,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:19,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:19,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504958537] [2020-11-12 03:29:19,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 03:29:19,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 03:29:19,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77543214] [2020-11-12 03:29:19,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 03:29:19,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:19,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 03:29:19,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-12 03:29:19,194 INFO L87 Difference]: Start difference. First operand 795 states and 1246 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:19,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:19,348 INFO L93 Difference]: Finished difference Result 2335 states and 3566 transitions. [2020-11-12 03:29:19,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-12 03:29:19,349 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2020-11-12 03:29:19,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:19,361 INFO L225 Difference]: With dead ends: 2335 [2020-11-12 03:29:19,362 INFO L226 Difference]: Without dead ends: 2068 [2020-11-12 03:29:19,362 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-11-12 03:29:19,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2068 states. [2020-11-12 03:29:19,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2068 to 907. [2020-11-12 03:29:19,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 843 states have (on average 1.763938315539739) internal successors, (1487), 906 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:19,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1487 transitions. [2020-11-12 03:29:19,408 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1487 transitions. Word has length 36 [2020-11-12 03:29:19,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:19,409 INFO L481 AbstractCegarLoop]: Abstraction has 907 states and 1487 transitions. [2020-11-12 03:29:19,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:19,409 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1487 transitions. [2020-11-12 03:29:19,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-12 03:29:19,411 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:19,411 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:19,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 03:29:19,411 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:19,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:19,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1267275225, now seen corresponding path program 4 times [2020-11-12 03:29:19,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:19,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565519915] [2020-11-12 03:29:19,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:19,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:19,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565519915] [2020-11-12 03:29:19,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 03:29:19,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 03:29:19,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118524797] [2020-11-12 03:29:19,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 03:29:19,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:19,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 03:29:19,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 03:29:19,571 INFO L87 Difference]: Start difference. First operand 907 states and 1487 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:19,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:19,795 INFO L93 Difference]: Finished difference Result 1275 states and 2103 transitions. [2020-11-12 03:29:19,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-12 03:29:19,796 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2020-11-12 03:29:19,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:19,802 INFO L225 Difference]: With dead ends: 1275 [2020-11-12 03:29:19,802 INFO L226 Difference]: Without dead ends: 921 [2020-11-12 03:29:19,803 INFO L749 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 [2020-11-12 03:29:19,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2020-11-12 03:29:19,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 806. [2020-11-12 03:29:19,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 742 states have (on average 1.7142857142857142) internal successors, (1272), 805 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:19,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1272 transitions. [2020-11-12 03:29:19,834 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1272 transitions. Word has length 36 [2020-11-12 03:29:19,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:19,835 INFO L481 AbstractCegarLoop]: Abstraction has 806 states and 1272 transitions. [2020-11-12 03:29:19,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:19,835 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1272 transitions. [2020-11-12 03:29:19,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-12 03:29:19,837 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:19,838 INFO L494 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:19,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 03:29:19,838 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:19,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:19,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1759874342, now seen corresponding path program 1 times [2020-11-12 03:29:19,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:19,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052038362] [2020-11-12 03:29:19,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:19,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:19,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:19,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052038362] [2020-11-12 03:29:19,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375877900] [2020-11-12 03:29:19,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:20,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-12 03:29:20,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:20,267 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:20,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:20,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:20,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-11-12 03:29:20,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917160117] [2020-11-12 03:29:20,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-12 03:29:20,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:20,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-12 03:29:20,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-12 03:29:20,295 INFO L87 Difference]: Start difference. First operand 806 states and 1272 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:20,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:20,465 INFO L93 Difference]: Finished difference Result 1204 states and 2014 transitions. [2020-11-12 03:29:20,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-12 03:29:20,466 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2020-11-12 03:29:20,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:20,476 INFO L225 Difference]: With dead ends: 1204 [2020-11-12 03:29:20,476 INFO L226 Difference]: Without dead ends: 934 [2020-11-12 03:29:20,476 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-11-12 03:29:20,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2020-11-12 03:29:20,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 855. [2020-11-12 03:29:20,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 791 states have (on average 1.7142857142857142) internal successors, (1356), 854 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:20,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1356 transitions. [2020-11-12 03:29:20,516 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1356 transitions. Word has length 41 [2020-11-12 03:29:20,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:20,516 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1356 transitions. [2020-11-12 03:29:20,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:20,521 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1356 transitions. [2020-11-12 03:29:20,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-12 03:29:20,524 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:20,524 INFO L494 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:20,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-12 03:29:20,738 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:20,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:20,740 INFO L82 PathProgramCache]: Analyzing trace with hash 349944486, now seen corresponding path program 2 times [2020-11-12 03:29:20,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:20,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088772595] [2020-11-12 03:29:20,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:20,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:20,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088772595] [2020-11-12 03:29:20,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610752501] [2020-11-12 03:29:20,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:21,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:29:21,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:21,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-12 03:29:21,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:21,073 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:29:21,093 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:21,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:21,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:21,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-11-12 03:29:21,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938188077] [2020-11-12 03:29:21,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-12 03:29:21,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:21,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-12 03:29:21,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-12 03:29:21,104 INFO L87 Difference]: Start difference. First operand 855 states and 1356 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:21,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:21,346 INFO L93 Difference]: Finished difference Result 1334 states and 2274 transitions. [2020-11-12 03:29:21,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-12 03:29:21,347 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2020-11-12 03:29:21,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:21,354 INFO L225 Difference]: With dead ends: 1334 [2020-11-12 03:29:21,355 INFO L226 Difference]: Without dead ends: 1064 [2020-11-12 03:29:21,356 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-11-12 03:29:21,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2020-11-12 03:29:21,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 862. [2020-11-12 03:29:21,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 798 states have (on average 1.7280701754385965) internal successors, (1379), 861 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:21,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1379 transitions. [2020-11-12 03:29:21,390 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1379 transitions. Word has length 41 [2020-11-12 03:29:21,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:21,390 INFO L481 AbstractCegarLoop]: Abstraction has 862 states and 1379 transitions. [2020-11-12 03:29:21,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:21,391 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1379 transitions. [2020-11-12 03:29:21,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-12 03:29:21,392 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:21,392 INFO L494 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:21,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:21,606 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:21,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:21,607 INFO L82 PathProgramCache]: Analyzing trace with hash 877888340, now seen corresponding path program 3 times [2020-11-12 03:29:21,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:21,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82769547] [2020-11-12 03:29:21,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:21,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:21,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82769547] [2020-11-12 03:29:21,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393427212] [2020-11-12 03:29:21,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:21,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-12 03:29:21,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:21,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-12 03:29:21,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:21,837 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:21,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:21,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:21,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-11-12 03:29:21,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876802140] [2020-11-12 03:29:21,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-12 03:29:21,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:21,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-12 03:29:21,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-11-12 03:29:21,849 INFO L87 Difference]: Start difference. First operand 862 states and 1379 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:22,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:22,122 INFO L93 Difference]: Finished difference Result 2436 states and 3766 transitions. [2020-11-12 03:29:22,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-12 03:29:22,123 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2020-11-12 03:29:22,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:22,137 INFO L225 Difference]: With dead ends: 2436 [2020-11-12 03:29:22,137 INFO L226 Difference]: Without dead ends: 2151 [2020-11-12 03:29:22,140 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-11-12 03:29:22,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2020-11-12 03:29:22,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 932. [2020-11-12 03:29:22,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 868 states have (on average 1.7799539170506913) internal successors, (1545), 931 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:22,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1545 transitions. [2020-11-12 03:29:22,197 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1545 transitions. Word has length 41 [2020-11-12 03:29:22,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:22,199 INFO L481 AbstractCegarLoop]: Abstraction has 932 states and 1545 transitions. [2020-11-12 03:29:22,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:22,199 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1545 transitions. [2020-11-12 03:29:22,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-12 03:29:22,202 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:22,202 INFO L494 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:22,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:22,415 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:22,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:22,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1717865532, now seen corresponding path program 4 times [2020-11-12 03:29:22,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:22,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739931042] [2020-11-12 03:29:22,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:22,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:22,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739931042] [2020-11-12 03:29:22,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422856721] [2020-11-12 03:29:22,633 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:22,707 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:29:22,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:22,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-12 03:29:22,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:22,739 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:29:22,763 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:22,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:22,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:22,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2020-11-12 03:29:22,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575023029] [2020-11-12 03:29:22,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-12 03:29:22,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:22,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-12 03:29:22,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-12 03:29:22,775 INFO L87 Difference]: Start difference. First operand 932 states and 1545 transitions. 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) [2020-11-12 03:29:23,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:23,158 INFO L93 Difference]: Finished difference Result 1751 states and 3009 transitions. [2020-11-12 03:29:23,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-12 03:29:23,159 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 [2020-11-12 03:29:23,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:23,166 INFO L225 Difference]: With dead ends: 1751 [2020-11-12 03:29:23,167 INFO L226 Difference]: Without dead ends: 1179 [2020-11-12 03:29:23,168 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:29:23,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2020-11-12 03:29:23,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 902. [2020-11-12 03:29:23,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 838 states have (on average 1.7291169451073987) internal successors, (1449), 901 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:23,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1449 transitions. [2020-11-12 03:29:23,198 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1449 transitions. Word has length 41 [2020-11-12 03:29:23,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:23,198 INFO L481 AbstractCegarLoop]: Abstraction has 902 states and 1449 transitions. [2020-11-12 03:29:23,198 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) [2020-11-12 03:29:23,198 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1449 transitions. [2020-11-12 03:29:23,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-12 03:29:23,199 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:23,200 INFO L494 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:23,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:23,414 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:23,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:23,415 INFO L82 PathProgramCache]: Analyzing trace with hash 376014513, now seen corresponding path program 1 times [2020-11-12 03:29:23,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:23,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121814453] [2020-11-12 03:29:23,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:23,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:23,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121814453] [2020-11-12 03:29:23,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067969618] [2020-11-12 03:29:23,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:23,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:23,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-12 03:29:23,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:23,627 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:23,641 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:23,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:23,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:23,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-11-12 03:29:23,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247671722] [2020-11-12 03:29:23,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-12 03:29:23,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:23,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-12 03:29:23,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-11-12 03:29:23,650 INFO L87 Difference]: Start difference. First operand 902 states and 1449 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:23,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:23,806 INFO L93 Difference]: Finished difference Result 1344 states and 2190 transitions. [2020-11-12 03:29:23,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-12 03:29:23,807 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2020-11-12 03:29:23,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:23,813 INFO L225 Difference]: With dead ends: 1344 [2020-11-12 03:29:23,813 INFO L226 Difference]: Without dead ends: 1144 [2020-11-12 03:29:23,813 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-11-12 03:29:23,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2020-11-12 03:29:23,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 907. [2020-11-12 03:29:23,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 843 states have (on average 1.737841043890866) internal successors, (1465), 906 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:23,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1465 transitions. [2020-11-12 03:29:23,842 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1465 transitions. Word has length 41 [2020-11-12 03:29:23,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:23,842 INFO L481 AbstractCegarLoop]: Abstraction has 907 states and 1465 transitions. [2020-11-12 03:29:23,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:23,843 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1465 transitions. [2020-11-12 03:29:23,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-12 03:29:23,845 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:23,845 INFO L494 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:24,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-11-12 03:29:24,059 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:24,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:24,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1435844774, now seen corresponding path program 1 times [2020-11-12 03:29:24,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:24,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073659792] [2020-11-12 03:29:24,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:24,249 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:24,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073659792] [2020-11-12 03:29:24,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124399127] [2020-11-12 03:29:24,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:24,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-12 03:29:24,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:24,384 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:24,456 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:24,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:24,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:24,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2020-11-12 03:29:24,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936061557] [2020-11-12 03:29:24,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-12 03:29:24,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:24,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-12 03:29:24,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-11-12 03:29:24,470 INFO L87 Difference]: Start difference. First operand 907 states and 1465 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:24,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:24,861 INFO L93 Difference]: Finished difference Result 1765 states and 2909 transitions. [2020-11-12 03:29:24,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-12 03:29:24,862 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2020-11-12 03:29:24,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:24,872 INFO L225 Difference]: With dead ends: 1765 [2020-11-12 03:29:24,872 INFO L226 Difference]: Without dead ends: 1431 [2020-11-12 03:29:24,873 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:29:24,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2020-11-12 03:29:24,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 982. [2020-11-12 03:29:24,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 918 states have (on average 1.7592592592592593) internal successors, (1615), 981 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:24,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1615 transitions. [2020-11-12 03:29:24,920 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1615 transitions. Word has length 46 [2020-11-12 03:29:24,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:24,920 INFO L481 AbstractCegarLoop]: Abstraction has 982 states and 1615 transitions. [2020-11-12 03:29:24,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:24,921 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1615 transitions. [2020-11-12 03:29:24,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-12 03:29:24,924 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:24,924 INFO L494 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:25,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:25,139 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:25,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:25,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1066195716, now seen corresponding path program 2 times [2020-11-12 03:29:25,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:25,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492107286] [2020-11-12 03:29:25,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:25,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:25,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492107286] [2020-11-12 03:29:25,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493625149] [2020-11-12 03:29:25,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:25,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:29:25,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:25,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-12 03:29:25,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:25,431 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:25,440 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:25,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:25,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-11-12 03:29:25,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147481576] [2020-11-12 03:29:25,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-12 03:29:25,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:25,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-12 03:29:25,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-12 03:29:25,443 INFO L87 Difference]: Start difference. First operand 982 states and 1615 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:25,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:25,905 INFO L93 Difference]: Finished difference Result 1659 states and 2890 transitions. [2020-11-12 03:29:25,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-12 03:29:25,907 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2020-11-12 03:29:25,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:25,916 INFO L225 Difference]: With dead ends: 1659 [2020-11-12 03:29:25,917 INFO L226 Difference]: Without dead ends: 1389 [2020-11-12 03:29:25,917 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-11-12 03:29:25,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2020-11-12 03:29:25,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1042. [2020-11-12 03:29:25,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1042 states, 978 states have (on average 1.738241308793456) internal successors, (1700), 1041 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:25,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1700 transitions. [2020-11-12 03:29:25,957 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1700 transitions. Word has length 46 [2020-11-12 03:29:25,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:25,957 INFO L481 AbstractCegarLoop]: Abstraction has 1042 states and 1700 transitions. [2020-11-12 03:29:25,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:25,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1700 transitions. [2020-11-12 03:29:25,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-12 03:29:25,960 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:25,961 INFO L494 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:26,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:26,176 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:26,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:26,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1818841724, now seen corresponding path program 3 times [2020-11-12 03:29:26,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:26,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705777973] [2020-11-12 03:29:26,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:26,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:26,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705777973] [2020-11-12 03:29:26,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808544451] [2020-11-12 03:29:26,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:26,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-12 03:29:26,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:26,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-12 03:29:26,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:26,458 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:29:26,497 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:26,506 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:26,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:26,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-11-12 03:29:26,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184808826] [2020-11-12 03:29:26,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-12 03:29:26,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:26,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-12 03:29:26,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-11-12 03:29:26,509 INFO L87 Difference]: Start difference. First operand 1042 states and 1700 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:26,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:26,935 INFO L93 Difference]: Finished difference Result 1654 states and 2842 transitions. [2020-11-12 03:29:26,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-12 03:29:26,937 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2020-11-12 03:29:26,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:26,948 INFO L225 Difference]: With dead ends: 1654 [2020-11-12 03:29:26,948 INFO L226 Difference]: Without dead ends: 1384 [2020-11-12 03:29:26,950 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-11-12 03:29:26,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2020-11-12 03:29:26,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1087. [2020-11-12 03:29:27,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1023 states have (on average 1.7302052785923754) internal successors, (1770), 1086 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:27,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1770 transitions. [2020-11-12 03:29:27,027 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1770 transitions. Word has length 46 [2020-11-12 03:29:27,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:27,030 INFO L481 AbstractCegarLoop]: Abstraction has 1087 states and 1770 transitions. [2020-11-12 03:29:27,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:27,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1770 transitions. [2020-11-12 03:29:27,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-12 03:29:27,035 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:27,036 INFO L494 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:27,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-12 03:29:27,250 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:27,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:27,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1948181718, now seen corresponding path program 4 times [2020-11-12 03:29:27,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:27,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321480320] [2020-11-12 03:29:27,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:27,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:27,415 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:27,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321480320] [2020-11-12 03:29:27,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675378240] [2020-11-12 03:29:27,416 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:27,494 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:29:27,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:27,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-12 03:29:27,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:27,540 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:27,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:27,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:27,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-11-12 03:29:27,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695334293] [2020-11-12 03:29:27,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-12 03:29:27,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:27,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-12 03:29:27,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-12 03:29:27,556 INFO L87 Difference]: Start difference. First operand 1087 states and 1770 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:27,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:27,883 INFO L93 Difference]: Finished difference Result 2766 states and 4354 transitions. [2020-11-12 03:29:27,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-12 03:29:27,884 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2020-11-12 03:29:27,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:27,900 INFO L225 Difference]: With dead ends: 2766 [2020-11-12 03:29:27,900 INFO L226 Difference]: Without dead ends: 2481 [2020-11-12 03:29:27,901 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:29:27,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2481 states. [2020-11-12 03:29:27,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2481 to 1197. [2020-11-12 03:29:27,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 1133 states have (on average 1.7590467784642543) internal successors, (1993), 1196 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:27,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1993 transitions. [2020-11-12 03:29:27,958 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1993 transitions. Word has length 46 [2020-11-12 03:29:27,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:27,958 INFO L481 AbstractCegarLoop]: Abstraction has 1197 states and 1993 transitions. [2020-11-12 03:29:27,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:27,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1993 transitions. [2020-11-12 03:29:27,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-12 03:29:27,962 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:27,962 INFO L494 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:28,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-12 03:29:28,177 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:28,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:28,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1108204526, now seen corresponding path program 5 times [2020-11-12 03:29:28,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:28,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798822737] [2020-11-12 03:29:28,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:28,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:28,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798822737] [2020-11-12 03:29:28,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723124449] [2020-11-12 03:29:28,350 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:28,441 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:29:28,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:28,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-12 03:29:28,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:28,498 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:29:28,532 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:28,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:28,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:28,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-11-12 03:29:28,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515462600] [2020-11-12 03:29:28,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-12 03:29:28,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:28,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-12 03:29:28,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-11-12 03:29:28,548 INFO L87 Difference]: Start difference. First operand 1197 states and 1993 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:29,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:29,094 INFO L93 Difference]: Finished difference Result 2126 states and 3687 transitions. [2020-11-12 03:29:29,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-12 03:29:29,095 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2020-11-12 03:29:29,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:29,106 INFO L225 Difference]: With dead ends: 2126 [2020-11-12 03:29:29,107 INFO L226 Difference]: Without dead ends: 1554 [2020-11-12 03:29:29,107 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=169, Invalid=481, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:29:29,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2020-11-12 03:29:29,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1062. [2020-11-12 03:29:29,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 998 states have (on average 1.717434869739479) internal successors, (1714), 1061 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:29,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1714 transitions. [2020-11-12 03:29:29,161 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1714 transitions. Word has length 46 [2020-11-12 03:29:29,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:29,161 INFO L481 AbstractCegarLoop]: Abstraction has 1062 states and 1714 transitions. [2020-11-12 03:29:29,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:29,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1714 transitions. [2020-11-12 03:29:29,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-12 03:29:29,165 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:29,165 INFO L494 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:29,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-12 03:29:29,381 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:29,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:29,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1118171503, now seen corresponding path program 6 times [2020-11-12 03:29:29,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:29,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18767703] [2020-11-12 03:29:29,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:29,571 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:29,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18767703] [2020-11-12 03:29:29,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546629635] [2020-11-12 03:29:29,572 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:29,649 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-11-12 03:29:29,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:29,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-12 03:29:29,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:29,689 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:29,701 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:29,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:29,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-11-12 03:29:29,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575986913] [2020-11-12 03:29:29,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-12 03:29:29,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:29,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-12 03:29:29,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-12 03:29:29,705 INFO L87 Difference]: Start difference. First operand 1062 states and 1714 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:30,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:30,011 INFO L93 Difference]: Finished difference Result 1659 states and 2844 transitions. [2020-11-12 03:29:30,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-12 03:29:30,012 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2020-11-12 03:29:30,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:30,021 INFO L225 Difference]: With dead ends: 1659 [2020-11-12 03:29:30,022 INFO L226 Difference]: Without dead ends: 1389 [2020-11-12 03:29:30,022 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2020-11-12 03:29:30,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2020-11-12 03:29:30,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1102. [2020-11-12 03:29:30,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 1038 states have (on average 1.71868978805395) internal successors, (1784), 1101 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:30,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1784 transitions. [2020-11-12 03:29:30,061 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1784 transitions. Word has length 51 [2020-11-12 03:29:30,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:30,061 INFO L481 AbstractCegarLoop]: Abstraction has 1102 states and 1784 transitions. [2020-11-12 03:29:30,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:30,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1784 transitions. [2020-11-12 03:29:30,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-12 03:29:30,064 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:30,064 INFO L494 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:30,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-12 03:29:30,281 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:30,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:30,282 INFO L82 PathProgramCache]: Analyzing trace with hash -503127889, now seen corresponding path program 7 times [2020-11-12 03:29:30,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:30,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778593512] [2020-11-12 03:29:30,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:30,422 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:30,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778593512] [2020-11-12 03:29:30,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131790875] [2020-11-12 03:29:30,423 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:30,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-12 03:29:30,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:30,538 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:29:30,556 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:30,564 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:30,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:30,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-11-12 03:29:30,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94885101] [2020-11-12 03:29:30,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-12 03:29:30,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:30,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-12 03:29:30,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-11-12 03:29:30,567 INFO L87 Difference]: Start difference. First operand 1102 states and 1784 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:31,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:31,072 INFO L93 Difference]: Finished difference Result 2173 states and 3800 transitions. [2020-11-12 03:29:31,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-12 03:29:31,073 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2020-11-12 03:29:31,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:31,080 INFO L225 Difference]: With dead ends: 2173 [2020-11-12 03:29:31,081 INFO L226 Difference]: Without dead ends: 1664 [2020-11-12 03:29:31,081 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:29:31,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2020-11-12 03:29:31,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1127. [2020-11-12 03:29:31,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1063 states have (on average 1.735653809971778) internal successors, (1845), 1126 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:31,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1845 transitions. [2020-11-12 03:29:31,121 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1845 transitions. Word has length 51 [2020-11-12 03:29:31,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:31,121 INFO L481 AbstractCegarLoop]: Abstraction has 1127 states and 1845 transitions. [2020-11-12 03:29:31,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:31,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1845 transitions. [2020-11-12 03:29:31,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-12 03:29:31,124 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:31,124 INFO L494 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:31,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-12 03:29:31,340 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:31,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:31,342 INFO L82 PathProgramCache]: Analyzing trace with hash 630962275, now seen corresponding path program 8 times [2020-11-12 03:29:31,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:31,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068272790] [2020-11-12 03:29:31,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:31,481 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:31,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068272790] [2020-11-12 03:29:31,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107346619] [2020-11-12 03:29:31,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:31,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:29:31,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:31,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-12 03:29:31,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:31,589 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:31,606 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:31,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:31,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-11-12 03:29:31,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685771747] [2020-11-12 03:29:31,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-12 03:29:31,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:31,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-12 03:29:31,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-12 03:29:31,609 INFO L87 Difference]: Start difference. First operand 1127 states and 1845 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:32,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:32,038 INFO L93 Difference]: Finished difference Result 2866 states and 4514 transitions. [2020-11-12 03:29:32,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-12 03:29:32,039 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2020-11-12 03:29:32,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:32,047 INFO L225 Difference]: With dead ends: 2866 [2020-11-12 03:29:32,047 INFO L226 Difference]: Without dead ends: 2581 [2020-11-12 03:29:32,048 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:29:32,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2581 states. [2020-11-12 03:29:32,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2581 to 1212. [2020-11-12 03:29:32,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 1148 states have (on average 1.779616724738676) internal successors, (2043), 1211 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:32,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 2043 transitions. [2020-11-12 03:29:32,102 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 2043 transitions. Word has length 51 [2020-11-12 03:29:32,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:32,103 INFO L481 AbstractCegarLoop]: Abstraction has 1212 states and 2043 transitions. [2020-11-12 03:29:32,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:32,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 2043 transitions. [2020-11-12 03:29:32,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-12 03:29:32,105 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:32,106 INFO L494 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:32,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:32,320 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:32,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:32,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1470939467, now seen corresponding path program 9 times [2020-11-12 03:29:32,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:32,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894389305] [2020-11-12 03:29:32,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:32,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:32,472 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:32,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894389305] [2020-11-12 03:29:32,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765571342] [2020-11-12 03:29:32,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:32,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-12 03:29:32,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:32,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-12 03:29:32,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:32,589 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:29:32,615 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:32,621 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:32,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:32,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2020-11-12 03:29:32,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890322601] [2020-11-12 03:29:32,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-12 03:29:32,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:32,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-12 03:29:32,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-11-12 03:29:32,624 INFO L87 Difference]: Start difference. First operand 1212 states and 2043 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:33,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:33,236 INFO L93 Difference]: Finished difference Result 2246 states and 3867 transitions. [2020-11-12 03:29:33,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-12 03:29:33,237 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2020-11-12 03:29:33,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:33,242 INFO L225 Difference]: With dead ends: 2246 [2020-11-12 03:29:33,242 INFO L226 Difference]: Without dead ends: 1674 [2020-11-12 03:29:33,243 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:29:33,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2020-11-12 03:29:33,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1017. [2020-11-12 03:29:33,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 953 states have (on average 1.714585519412382) internal successors, (1634), 1016 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:33,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1634 transitions. [2020-11-12 03:29:33,279 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1634 transitions. Word has length 51 [2020-11-12 03:29:33,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:33,280 INFO L481 AbstractCegarLoop]: Abstraction has 1017 states and 1634 transitions. [2020-11-12 03:29:33,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:33,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1634 transitions. [2020-11-12 03:29:33,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-12 03:29:33,283 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:33,283 INFO L494 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:33,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:33,499 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:33,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:33,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1241968757, now seen corresponding path program 10 times [2020-11-12 03:29:33,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:33,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726361034] [2020-11-12 03:29:33,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:33,780 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:33,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726361034] [2020-11-12 03:29:33,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623585682] [2020-11-12 03:29:33,781 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:33,869 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:29:33,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:33,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-12 03:29:33,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:33,911 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:33,949 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:33,971 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:33,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:33,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 15 [2020-11-12 03:29:33,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064148342] [2020-11-12 03:29:33,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-12 03:29:33,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:33,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-12 03:29:33,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-11-12 03:29:33,976 INFO L87 Difference]: Start difference. First operand 1017 states and 1634 transitions. Second operand has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:34,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:34,414 INFO L93 Difference]: Finished difference Result 1925 states and 3178 transitions. [2020-11-12 03:29:34,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-12 03:29:34,415 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2020-11-12 03:29:34,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:34,420 INFO L225 Difference]: With dead ends: 1925 [2020-11-12 03:29:34,421 INFO L226 Difference]: Without dead ends: 1591 [2020-11-12 03:29:34,422 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:29:34,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2020-11-12 03:29:34,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 1092. [2020-11-12 03:29:34,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 1028 states have (on average 1.735408560311284) internal successors, (1784), 1091 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:34,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1784 transitions. [2020-11-12 03:29:34,461 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1784 transitions. Word has length 56 [2020-11-12 03:29:34,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:34,462 INFO L481 AbstractCegarLoop]: Abstraction has 1092 states and 1784 transitions. [2020-11-12 03:29:34,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:34,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1784 transitions. [2020-11-12 03:29:34,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-12 03:29:34,466 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:34,466 INFO L494 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:34,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-11-12 03:29:34,680 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:34,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:34,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1430278829, now seen corresponding path program 11 times [2020-11-12 03:29:34,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:34,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031927147] [2020-11-12 03:29:34,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:34,861 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:34,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031927147] [2020-11-12 03:29:34,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524356620] [2020-11-12 03:29:34,862 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:34,939 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-11-12 03:29:34,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:34,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-12 03:29:34,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:35,005 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:35,017 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:35,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:35,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-11-12 03:29:35,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893783564] [2020-11-12 03:29:35,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-12 03:29:35,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:35,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-12 03:29:35,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-11-12 03:29:35,020 INFO L87 Difference]: Start difference. First operand 1092 states and 1784 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:35,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:35,309 INFO L93 Difference]: Finished difference Result 1954 states and 3434 transitions. [2020-11-12 03:29:35,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-12 03:29:35,309 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2020-11-12 03:29:35,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:35,314 INFO L225 Difference]: With dead ends: 1954 [2020-11-12 03:29:35,314 INFO L226 Difference]: Without dead ends: 1684 [2020-11-12 03:29:35,315 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-11-12 03:29:35,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2020-11-12 03:29:35,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1187. [2020-11-12 03:29:35,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 1123 states have (on average 1.7310774710596617) internal successors, (1944), 1186 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:35,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1944 transitions. [2020-11-12 03:29:35,369 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1944 transitions. Word has length 56 [2020-11-12 03:29:35,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:35,369 INFO L481 AbstractCegarLoop]: Abstraction has 1187 states and 1944 transitions. [2020-11-12 03:29:35,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:35,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1944 transitions. [2020-11-12 03:29:35,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-12 03:29:35,373 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:35,373 INFO L494 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:35,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:35,587 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:35,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:35,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1417961427, now seen corresponding path program 12 times [2020-11-12 03:29:35,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:35,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657835015] [2020-11-12 03:29:35,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:35,769 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:35,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657835015] [2020-11-12 03:29:35,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182611924] [2020-11-12 03:29:35,770 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:35,850 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-11-12 03:29:35,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:35,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-12 03:29:35,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:35,882 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:29:35,934 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:35,954 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:35,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:35,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-11-12 03:29:35,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379532169] [2020-11-12 03:29:35,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-12 03:29:35,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:35,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-12 03:29:35,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-11-12 03:29:35,957 INFO L87 Difference]: Start difference. First operand 1187 states and 1944 transitions. Second operand has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:36,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:36,385 INFO L93 Difference]: Finished difference Result 1909 states and 3324 transitions. [2020-11-12 03:29:36,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-12 03:29:36,385 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2020-11-12 03:29:36,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:36,389 INFO L225 Difference]: With dead ends: 1909 [2020-11-12 03:29:36,389 INFO L226 Difference]: Without dead ends: 1639 [2020-11-12 03:29:36,390 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:29:36,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2020-11-12 03:29:36,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1237. [2020-11-12 03:29:36,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 1173 states have (on average 1.7254901960784315) internal successors, (2024), 1236 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:36,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 2024 transitions. [2020-11-12 03:29:36,456 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 2024 transitions. Word has length 56 [2020-11-12 03:29:36,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:36,457 INFO L481 AbstractCegarLoop]: Abstraction has 1237 states and 2024 transitions. [2020-11-12 03:29:36,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:36,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 2024 transitions. [2020-11-12 03:29:36,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-12 03:29:36,460 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:36,461 INFO L494 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:36,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-11-12 03:29:36,677 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:36,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:36,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1433389627, now seen corresponding path program 13 times [2020-11-12 03:29:36,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:36,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915486449] [2020-11-12 03:29:36,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:36,891 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:36,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915486449] [2020-11-12 03:29:36,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110018053] [2020-11-12 03:29:36,894 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:36,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-12 03:29:36,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:37,067 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:37,085 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:37,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:37,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-11-12 03:29:37,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526381933] [2020-11-12 03:29:37,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-12 03:29:37,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:37,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-12 03:29:37,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-11-12 03:29:37,089 INFO L87 Difference]: Start difference. First operand 1237 states and 2024 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:37,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:37,568 INFO L93 Difference]: Finished difference Result 1934 states and 3354 transitions. [2020-11-12 03:29:37,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-12 03:29:37,569 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2020-11-12 03:29:37,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:37,576 INFO L225 Difference]: With dead ends: 1934 [2020-11-12 03:29:37,576 INFO L226 Difference]: Without dead ends: 1664 [2020-11-12 03:29:37,577 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:29:37,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2020-11-12 03:29:37,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1287. [2020-11-12 03:29:37,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1223 states have (on average 1.7203597710547833) internal successors, (2104), 1286 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:37,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 2104 transitions. [2020-11-12 03:29:37,622 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 2104 transitions. Word has length 56 [2020-11-12 03:29:37,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:37,623 INFO L481 AbstractCegarLoop]: Abstraction has 1287 states and 2104 transitions. [2020-11-12 03:29:37,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:37,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 2104 transitions. [2020-11-12 03:29:37,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-12 03:29:37,626 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:37,627 INFO L494 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:37,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-11-12 03:29:37,841 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:37,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:37,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1240278277, now seen corresponding path program 14 times [2020-11-12 03:29:37,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:37,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546828387] [2020-11-12 03:29:37,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:38,061 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:38,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546828387] [2020-11-12 03:29:38,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79007584] [2020-11-12 03:29:38,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:38,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:29:38,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:38,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-12 03:29:38,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:38,180 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:29:38,225 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:38,233 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:38,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:38,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-11-12 03:29:38,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573360820] [2020-11-12 03:29:38,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-12 03:29:38,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:38,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-12 03:29:38,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-11-12 03:29:38,236 INFO L87 Difference]: Start difference. First operand 1287 states and 2104 transitions. Second operand has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:38,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:38,850 INFO L93 Difference]: Finished difference Result 2363 states and 4140 transitions. [2020-11-12 03:29:38,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-12 03:29:38,851 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2020-11-12 03:29:38,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:38,857 INFO L225 Difference]: With dead ends: 2363 [2020-11-12 03:29:38,857 INFO L226 Difference]: Without dead ends: 1854 [2020-11-12 03:29:38,858 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:29:38,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2020-11-12 03:29:38,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1312. [2020-11-12 03:29:38,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 1248 states have (on average 1.734775641025641) internal successors, (2165), 1311 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:38,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 2165 transitions. [2020-11-12 03:29:38,896 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 2165 transitions. Word has length 56 [2020-11-12 03:29:38,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:38,896 INFO L481 AbstractCegarLoop]: Abstraction has 1312 states and 2165 transitions. [2020-11-12 03:29:38,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:38,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 2165 transitions. [2020-11-12 03:29:38,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-12 03:29:38,899 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:38,899 INFO L494 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:39,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-11-12 03:29:39,115 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:39,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:39,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1920598855, now seen corresponding path program 15 times [2020-11-12 03:29:39,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:39,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990944034] [2020-11-12 03:29:39,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:39,314 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:39,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990944034] [2020-11-12 03:29:39,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270358728] [2020-11-12 03:29:39,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:39,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-12 03:29:39,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:39,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-12 03:29:39,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:39,447 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:39,457 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:39,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:39,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-11-12 03:29:39,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458163285] [2020-11-12 03:29:39,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-12 03:29:39,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:39,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-12 03:29:39,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-12 03:29:39,462 INFO L87 Difference]: Start difference. First operand 1312 states and 2165 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:39,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:39,899 INFO L93 Difference]: Finished difference Result 3041 states and 4849 transitions. [2020-11-12 03:29:39,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-12 03:29:39,900 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2020-11-12 03:29:39,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:39,908 INFO L225 Difference]: With dead ends: 3041 [2020-11-12 03:29:39,908 INFO L226 Difference]: Without dead ends: 2756 [2020-11-12 03:29:39,909 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:29:39,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2020-11-12 03:29:39,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 1397. [2020-11-12 03:29:39,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1333 states have (on average 1.7726931732933233) internal successors, (2363), 1396 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:39,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 2363 transitions. [2020-11-12 03:29:39,963 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 2363 transitions. Word has length 56 [2020-11-12 03:29:39,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:39,964 INFO L481 AbstractCegarLoop]: Abstraction has 1397 states and 2363 transitions. [2020-11-12 03:29:39,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:39,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 2363 transitions. [2020-11-12 03:29:39,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-12 03:29:39,967 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:39,968 INFO L494 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:40,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-11-12 03:29:40,182 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:40,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:40,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1080621663, now seen corresponding path program 16 times [2020-11-12 03:29:40,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:40,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253537278] [2020-11-12 03:29:40,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:40,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:40,353 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:40,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253537278] [2020-11-12 03:29:40,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026581076] [2020-11-12 03:29:40,354 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:40,441 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:29:40,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:40,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-12 03:29:40,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:40,478 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:29:40,495 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:40,506 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:40,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:40,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-11-12 03:29:40,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114853414] [2020-11-12 03:29:40,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-12 03:29:40,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:40,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-12 03:29:40,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-12 03:29:40,509 INFO L87 Difference]: Start difference. First operand 1397 states and 2363 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 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) [2020-11-12 03:29:41,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:41,117 INFO L93 Difference]: Finished difference Result 2040 states and 3469 transitions. [2020-11-12 03:29:41,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-12 03:29:41,118 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 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 [2020-11-12 03:29:41,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:41,123 INFO L225 Difference]: With dead ends: 2040 [2020-11-12 03:29:41,123 INFO L226 Difference]: Without dead ends: 1644 [2020-11-12 03:29:41,124 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:29:41,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2020-11-12 03:29:41,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1212. [2020-11-12 03:29:41,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 1148 states have (on average 1.7195121951219512) internal successors, (1974), 1211 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:41,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1974 transitions. [2020-11-12 03:29:41,161 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1974 transitions. Word has length 56 [2020-11-12 03:29:41,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:41,162 INFO L481 AbstractCegarLoop]: Abstraction has 1212 states and 1974 transitions. [2020-11-12 03:29:41,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 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) [2020-11-12 03:29:41,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1974 transitions. [2020-11-12 03:29:41,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-12 03:29:41,165 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:41,166 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:41,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-11-12 03:29:41,380 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:41,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:41,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1646291808, now seen corresponding path program 17 times [2020-11-12 03:29:41,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:41,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34167458] [2020-11-12 03:29:41,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:41,581 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:41,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34167458] [2020-11-12 03:29:41,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522377819] [2020-11-12 03:29:41,582 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:41,665 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-11-12 03:29:41,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:41,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-12 03:29:41,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:41,696 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:41,708 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:41,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:41,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-11-12 03:29:41,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094800397] [2020-11-12 03:29:41,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-12 03:29:41,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:41,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-12 03:29:41,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-12 03:29:41,720 INFO L87 Difference]: Start difference. First operand 1212 states and 1974 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:42,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:42,123 INFO L93 Difference]: Finished difference Result 1909 states and 3304 transitions. [2020-11-12 03:29:42,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-12 03:29:42,123 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2020-11-12 03:29:42,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:42,129 INFO L225 Difference]: With dead ends: 1909 [2020-11-12 03:29:42,129 INFO L226 Difference]: Without dead ends: 1639 [2020-11-12 03:29:42,130 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2020-11-12 03:29:42,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2020-11-12 03:29:42,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1252. [2020-11-12 03:29:42,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1188 states have (on average 1.7205387205387206) internal successors, (2044), 1251 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:42,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 2044 transitions. [2020-11-12 03:29:42,166 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 2044 transitions. Word has length 61 [2020-11-12 03:29:42,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:42,167 INFO L481 AbstractCegarLoop]: Abstraction has 1252 states and 2044 transitions. [2020-11-12 03:29:42,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:42,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 2044 transitions. [2020-11-12 03:29:42,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-12 03:29:42,170 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:42,171 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:42,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:42,385 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:42,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:42,386 INFO L82 PathProgramCache]: Analyzing trace with hash 982207136, now seen corresponding path program 18 times [2020-11-12 03:29:42,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:42,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849599646] [2020-11-12 03:29:42,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:42,612 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:42,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849599646] [2020-11-12 03:29:42,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482357839] [2020-11-12 03:29:42,613 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:42,694 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-11-12 03:29:42,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:42,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-12 03:29:42,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:42,722 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:29:42,747 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:42,756 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:42,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:42,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-11-12 03:29:42,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217724059] [2020-11-12 03:29:42,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-12 03:29:42,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:42,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-12 03:29:42,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-11-12 03:29:42,759 INFO L87 Difference]: Start difference. First operand 1252 states and 2044 transitions. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:43,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:43,245 INFO L93 Difference]: Finished difference Result 2044 states and 3554 transitions. [2020-11-12 03:29:43,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-12 03:29:43,246 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2020-11-12 03:29:43,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:43,251 INFO L225 Difference]: With dead ends: 2044 [2020-11-12 03:29:43,251 INFO L226 Difference]: Without dead ends: 1774 [2020-11-12 03:29:43,252 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=169, Invalid=533, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:29:43,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2020-11-12 03:29:43,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1277. [2020-11-12 03:29:43,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 1213 states have (on average 1.7304204451772465) internal successors, (2099), 1276 states have internal predecessors, (2099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:43,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 2099 transitions. [2020-11-12 03:29:43,289 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 2099 transitions. Word has length 61 [2020-11-12 03:29:43,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:43,290 INFO L481 AbstractCegarLoop]: Abstraction has 1277 states and 2099 transitions. [2020-11-12 03:29:43,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:43,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 2099 transitions. [2020-11-12 03:29:43,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-12 03:29:43,293 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:43,294 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:43,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-11-12 03:29:43,509 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:43,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:43,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1280729022, now seen corresponding path program 19 times [2020-11-12 03:29:43,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:43,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530028147] [2020-11-12 03:29:43,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:43,692 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:43,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530028147] [2020-11-12 03:29:43,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186566995] [2020-11-12 03:29:43,694 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:43,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:43,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-12 03:29:43,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:43,801 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:43,811 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:43,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:43,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-11-12 03:29:43,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732092072] [2020-11-12 03:29:43,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-12 03:29:43,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:43,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-12 03:29:43,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-11-12 03:29:43,814 INFO L87 Difference]: Start difference. First operand 1277 states and 2099 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:44,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:44,279 INFO L93 Difference]: Finished difference Result 2059 states and 3564 transitions. [2020-11-12 03:29:44,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-12 03:29:44,280 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2020-11-12 03:29:44,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:44,283 INFO L225 Difference]: With dead ends: 2059 [2020-11-12 03:29:44,283 INFO L226 Difference]: Without dead ends: 1789 [2020-11-12 03:29:44,284 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:29:44,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2020-11-12 03:29:44,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1302. [2020-11-12 03:29:44,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1302 states, 1238 states have (on average 1.739903069466882) internal successors, (2154), 1301 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:44,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 2154 transitions. [2020-11-12 03:29:44,319 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 2154 transitions. Word has length 61 [2020-11-12 03:29:44,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:44,319 INFO L481 AbstractCegarLoop]: Abstraction has 1302 states and 2154 transitions. [2020-11-12 03:29:44,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:44,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 2154 transitions. [2020-11-12 03:29:44,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-12 03:29:44,323 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:44,324 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:44,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:44,539 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:44,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:44,539 INFO L82 PathProgramCache]: Analyzing trace with hash -340570370, now seen corresponding path program 20 times [2020-11-12 03:29:44,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:44,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073450082] [2020-11-12 03:29:44,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:44,711 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:44,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073450082] [2020-11-12 03:29:44,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675342136] [2020-11-12 03:29:44,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:44,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:29:44,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:44,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-12 03:29:44,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:44,825 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:29:44,840 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:44,850 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:44,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:44,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-11-12 03:29:44,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141734737] [2020-11-12 03:29:44,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-12 03:29:44,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:44,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-12 03:29:44,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-11-12 03:29:44,853 INFO L87 Difference]: Start difference. First operand 1302 states and 2154 transitions. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:45,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:45,471 INFO L93 Difference]: Finished difference Result 2104 states and 3622 transitions. [2020-11-12 03:29:45,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-12 03:29:45,472 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2020-11-12 03:29:45,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:45,475 INFO L225 Difference]: With dead ends: 2104 [2020-11-12 03:29:45,476 INFO L226 Difference]: Without dead ends: 1834 [2020-11-12 03:29:45,476 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:29:45,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1834 states. [2020-11-12 03:29:45,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1834 to 1327. [2020-11-12 03:29:45,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 1263 states have (on average 1.7537608867775138) internal successors, (2215), 1326 states have internal predecessors, (2215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:45,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 2215 transitions. [2020-11-12 03:29:45,509 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 2215 transitions. Word has length 61 [2020-11-12 03:29:45,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:45,510 INFO L481 AbstractCegarLoop]: Abstraction has 1327 states and 2215 transitions. [2020-11-12 03:29:45,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:45,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 2215 transitions. [2020-11-12 03:29:45,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-12 03:29:45,514 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:45,514 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:45,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-11-12 03:29:45,728 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:45,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:45,729 INFO L82 PathProgramCache]: Analyzing trace with hash 793519794, now seen corresponding path program 21 times [2020-11-12 03:29:45,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:45,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011248308] [2020-11-12 03:29:45,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:45,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:45,881 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:45,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011248308] [2020-11-12 03:29:45,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349418871] [2020-11-12 03:29:45,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:45,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-12 03:29:45,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:45,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-12 03:29:45,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:45,989 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:46,008 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:46,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:46,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-11-12 03:29:46,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280148980] [2020-11-12 03:29:46,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-12 03:29:46,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:46,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-12 03:29:46,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-11-12 03:29:46,011 INFO L87 Difference]: Start difference. First operand 1327 states and 2215 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:46,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:46,514 INFO L93 Difference]: Finished difference Result 3166 states and 5034 transitions. [2020-11-12 03:29:46,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-12 03:29:46,515 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2020-11-12 03:29:46,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:46,520 INFO L225 Difference]: With dead ends: 3166 [2020-11-12 03:29:46,520 INFO L226 Difference]: Without dead ends: 2881 [2020-11-12 03:29:46,521 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=230, Invalid=582, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:29:46,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2020-11-12 03:29:46,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 1412. [2020-11-12 03:29:46,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1348 states have (on average 1.790059347181009) internal successors, (2413), 1411 states have internal predecessors, (2413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:46,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 2413 transitions. [2020-11-12 03:29:46,566 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 2413 transitions. Word has length 61 [2020-11-12 03:29:46,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:46,566 INFO L481 AbstractCegarLoop]: Abstraction has 1412 states and 2413 transitions. [2020-11-12 03:29:46,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:46,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 2413 transitions. [2020-11-12 03:29:46,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-12 03:29:46,570 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:46,571 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:46,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:46,787 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:46,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:46,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1633496986, now seen corresponding path program 22 times [2020-11-12 03:29:46,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:46,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873076969] [2020-11-12 03:29:46,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:46,959 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:46,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873076969] [2020-11-12 03:29:46,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392680115] [2020-11-12 03:29:46,960 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:47,038 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:29:47,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:47,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-12 03:29:47,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:47,078 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:29:47,098 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:47,108 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:47,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:47,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-11-12 03:29:47,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110839138] [2020-11-12 03:29:47,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-12 03:29:47,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:47,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-12 03:29:47,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-11-12 03:29:47,111 INFO L87 Difference]: Start difference. First operand 1412 states and 2413 transitions. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:47,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:47,790 INFO L93 Difference]: Finished difference Result 2165 states and 3629 transitions. [2020-11-12 03:29:47,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-12 03:29:47,790 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2020-11-12 03:29:47,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:47,794 INFO L225 Difference]: With dead ends: 2165 [2020-11-12 03:29:47,794 INFO L226 Difference]: Without dead ends: 1769 [2020-11-12 03:29:47,795 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=256, Invalid=674, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:29:47,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2020-11-12 03:29:47,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1167. [2020-11-12 03:29:47,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 1103 states have (on average 1.7171350861287398) internal successors, (1894), 1166 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:47,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1894 transitions. [2020-11-12 03:29:47,825 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1894 transitions. Word has length 61 [2020-11-12 03:29:47,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:47,826 INFO L481 AbstractCegarLoop]: Abstraction has 1167 states and 1894 transitions. [2020-11-12 03:29:47,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:47,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1894 transitions. [2020-11-12 03:29:47,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-12 03:29:47,829 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:47,830 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:48,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-11-12 03:29:48,046 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:48,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:48,047 INFO L82 PathProgramCache]: Analyzing trace with hash 531207804, now seen corresponding path program 23 times [2020-11-12 03:29:48,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:48,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208960034] [2020-11-12 03:29:48,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:48,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:48,272 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:48,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208960034] [2020-11-12 03:29:48,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067564697] [2020-11-12 03:29:48,273 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:48,360 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-11-12 03:29:48,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:48,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-12 03:29:48,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:48,399 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:48,438 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:48,448 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:48,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:48,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 17 [2020-11-12 03:29:48,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107982078] [2020-11-12 03:29:48,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-12 03:29:48,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:48,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-12 03:29:48,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-11-12 03:29:48,450 INFO L87 Difference]: Start difference. First operand 1167 states and 1894 transitions. Second operand has 17 states, 17 states have (on average 5.235294117647059) internal successors, (89), 17 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:48,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:48,939 INFO L93 Difference]: Finished difference Result 2125 states and 3538 transitions. [2020-11-12 03:29:48,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-12 03:29:48,939 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.235294117647059) internal successors, (89), 17 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2020-11-12 03:29:48,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:48,943 INFO L225 Difference]: With dead ends: 2125 [2020-11-12 03:29:48,943 INFO L226 Difference]: Without dead ends: 1791 [2020-11-12 03:29:48,943 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=240, Invalid=690, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:29:48,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2020-11-12 03:29:48,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1242. [2020-11-12 03:29:48,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 1178 states have (on average 1.7351443123938879) internal successors, (2044), 1241 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:48,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 2044 transitions. [2020-11-12 03:29:48,978 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 2044 transitions. Word has length 66 [2020-11-12 03:29:48,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:48,978 INFO L481 AbstractCegarLoop]: Abstraction has 1242 states and 2044 transitions. [2020-11-12 03:29:48,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.235294117647059) internal successors, (89), 17 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:48,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 2044 transitions. [2020-11-12 03:29:48,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-12 03:29:48,981 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:48,982 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:49,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:49,198 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:49,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:49,198 INFO L82 PathProgramCache]: Analyzing trace with hash 861460254, now seen corresponding path program 24 times [2020-11-12 03:29:49,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:49,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231758541] [2020-11-12 03:29:49,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:49,417 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:49,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231758541] [2020-11-12 03:29:49,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793641258] [2020-11-12 03:29:49,418 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:49,498 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-11-12 03:29:49,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:49,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-12 03:29:49,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:49,543 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:49,557 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:49,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:49,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-11-12 03:29:49,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507728274] [2020-11-12 03:29:49,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-12 03:29:49,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:49,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-12 03:29:49,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-11-12 03:29:49,560 INFO L87 Difference]: Start difference. First operand 1242 states and 2044 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:49,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:49,906 INFO L93 Difference]: Finished difference Result 2254 states and 3994 transitions. [2020-11-12 03:29:49,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-12 03:29:49,907 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2020-11-12 03:29:49,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:49,910 INFO L225 Difference]: With dead ends: 2254 [2020-11-12 03:29:49,910 INFO L226 Difference]: Without dead ends: 1984 [2020-11-12 03:29:49,911 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:29:49,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2020-11-12 03:29:49,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 1337. [2020-11-12 03:29:49,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 1273 states have (on average 1.7313432835820894) internal successors, (2204), 1336 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:49,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 2204 transitions. [2020-11-12 03:29:49,942 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 2204 transitions. Word has length 66 [2020-11-12 03:29:49,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:49,942 INFO L481 AbstractCegarLoop]: Abstraction has 1337 states and 2204 transitions. [2020-11-12 03:29:49,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:49,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 2204 transitions. [2020-11-12 03:29:49,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-12 03:29:49,947 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:49,947 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:50,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-11-12 03:29:50,162 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:50,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:50,162 INFO L82 PathProgramCache]: Analyzing trace with hash 2012300446, now seen corresponding path program 25 times [2020-11-12 03:29:50,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:50,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826008227] [2020-11-12 03:29:50,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:50,423 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:50,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826008227] [2020-11-12 03:29:50,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73646782] [2020-11-12 03:29:50,424 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:50,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-12 03:29:50,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:50,525 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:29:50,569 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:50,578 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:50,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:50,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2020-11-12 03:29:50,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797450363] [2020-11-12 03:29:50,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-12 03:29:50,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:50,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-12 03:29:50,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2020-11-12 03:29:50,580 INFO L87 Difference]: Start difference. First operand 1337 states and 2204 transitions. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:51,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:51,105 INFO L93 Difference]: Finished difference Result 2209 states and 3884 transitions. [2020-11-12 03:29:51,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-12 03:29:51,106 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2020-11-12 03:29:51,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:51,109 INFO L225 Difference]: With dead ends: 2209 [2020-11-12 03:29:51,110 INFO L226 Difference]: Without dead ends: 1939 [2020-11-12 03:29:51,111 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:29:51,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2020-11-12 03:29:51,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1387. [2020-11-12 03:29:51,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1387 states, 1323 states have (on average 1.726379440665155) internal successors, (2284), 1386 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:51,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 2284 transitions. [2020-11-12 03:29:51,132 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 2284 transitions. Word has length 66 [2020-11-12 03:29:51,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:51,133 INFO L481 AbstractCegarLoop]: Abstraction has 1387 states and 2284 transitions. [2020-11-12 03:29:51,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:51,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 2284 transitions. [2020-11-12 03:29:51,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-12 03:29:51,135 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:51,135 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:51,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:51,336 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:51,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:51,337 INFO L82 PathProgramCache]: Analyzing trace with hash 836353078, now seen corresponding path program 26 times [2020-11-12 03:29:51,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:51,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108106923] [2020-11-12 03:29:51,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:51,570 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:51,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108106923] [2020-11-12 03:29:51,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406986800] [2020-11-12 03:29:51,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:51,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:29:51,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:51,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-12 03:29:51,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:51,725 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:51,734 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:51,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:51,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-11-12 03:29:51,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297559488] [2020-11-12 03:29:51,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-12 03:29:51,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:51,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-12 03:29:51,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-11-12 03:29:51,737 INFO L87 Difference]: Start difference. First operand 1387 states and 2284 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:52,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:52,138 INFO L93 Difference]: Finished difference Result 2234 states and 3914 transitions. [2020-11-12 03:29:52,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-12 03:29:52,139 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2020-11-12 03:29:52,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:52,143 INFO L225 Difference]: With dead ends: 2234 [2020-11-12 03:29:52,143 INFO L226 Difference]: Without dead ends: 1964 [2020-11-12 03:29:52,144 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:29:52,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2020-11-12 03:29:52,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 1437. [2020-11-12 03:29:52,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1373 states have (on average 1.7217771303714493) internal successors, (2364), 1436 states have internal predecessors, (2364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:52,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 2364 transitions. [2020-11-12 03:29:52,176 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 2364 transitions. Word has length 66 [2020-11-12 03:29:52,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:52,177 INFO L481 AbstractCegarLoop]: Abstraction has 1437 states and 2364 transitions. [2020-11-12 03:29:52,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:52,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 2364 transitions. [2020-11-12 03:29:52,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-12 03:29:52,180 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:52,180 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:52,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-11-12 03:29:52,396 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:52,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:52,397 INFO L82 PathProgramCache]: Analyzing trace with hash 172268406, now seen corresponding path program 27 times [2020-11-12 03:29:52,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:52,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492906818] [2020-11-12 03:29:52,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:52,609 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:52,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492906818] [2020-11-12 03:29:52,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953309448] [2020-11-12 03:29:52,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:52,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-12 03:29:52,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:52,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-12 03:29:52,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:52,763 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:29:52,818 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:52,829 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:52,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:52,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2020-11-12 03:29:52,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360561231] [2020-11-12 03:29:52,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-12 03:29:52,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:52,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-12 03:29:52,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-11-12 03:29:52,833 INFO L87 Difference]: Start difference. First operand 1437 states and 2364 transitions. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:53,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:53,525 INFO L93 Difference]: Finished difference Result 2234 states and 3894 transitions. [2020-11-12 03:29:53,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-12 03:29:53,526 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2020-11-12 03:29:53,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:53,531 INFO L225 Difference]: With dead ends: 2234 [2020-11-12 03:29:53,532 INFO L226 Difference]: Without dead ends: 1964 [2020-11-12 03:29:53,533 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=227, Invalid=703, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:29:53,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2020-11-12 03:29:53,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 1462. [2020-11-12 03:29:53,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1398 states have (on average 1.7303290414878398) internal successors, (2419), 1461 states have internal predecessors, (2419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:53,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 2419 transitions. [2020-11-12 03:29:53,596 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 2419 transitions. Word has length 66 [2020-11-12 03:29:53,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:53,596 INFO L481 AbstractCegarLoop]: Abstraction has 1462 states and 2419 transitions. [2020-11-12 03:29:53,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:53,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 2419 transitions. [2020-11-12 03:29:53,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-12 03:29:53,601 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:53,601 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:53,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-11-12 03:29:53,815 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:53,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:53,816 INFO L82 PathProgramCache]: Analyzing trace with hash 470790292, now seen corresponding path program 28 times [2020-11-12 03:29:53,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:53,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746779287] [2020-11-12 03:29:53,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:54,015 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:54,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746779287] [2020-11-12 03:29:54,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777011324] [2020-11-12 03:29:54,016 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:54,108 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:29:54,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:54,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-12 03:29:54,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:54,167 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:54,179 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:54,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:54,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-11-12 03:29:54,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551938033] [2020-11-12 03:29:54,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-12 03:29:54,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:54,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-12 03:29:54,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-11-12 03:29:54,183 INFO L87 Difference]: Start difference. First operand 1462 states and 2419 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:54,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:54,687 INFO L93 Difference]: Finished difference Result 2209 states and 3849 transitions. [2020-11-12 03:29:54,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-12 03:29:54,688 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2020-11-12 03:29:54,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:54,692 INFO L225 Difference]: With dead ends: 2209 [2020-11-12 03:29:54,692 INFO L226 Difference]: Without dead ends: 1939 [2020-11-12 03:29:54,693 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:29:54,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2020-11-12 03:29:54,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1487. [2020-11-12 03:29:54,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1487 states, 1423 states have (on average 1.7385804638088544) internal successors, (2474), 1486 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:54,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 2474 transitions. [2020-11-12 03:29:54,731 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 2474 transitions. Word has length 66 [2020-11-12 03:29:54,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:54,732 INFO L481 AbstractCegarLoop]: Abstraction has 1487 states and 2474 transitions. [2020-11-12 03:29:54,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:54,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 2474 transitions. [2020-11-12 03:29:54,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-12 03:29:54,736 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:54,737 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:54,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-11-12 03:29:54,952 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:54,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:54,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1150509100, now seen corresponding path program 29 times [2020-11-12 03:29:54,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:54,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595842306] [2020-11-12 03:29:54,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:55,147 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:55,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595842306] [2020-11-12 03:29:55,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552172562] [2020-11-12 03:29:55,148 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:55,227 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-11-12 03:29:55,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:55,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-12 03:29:55,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:55,257 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:29:55,296 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:55,307 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:55,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:55,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2020-11-12 03:29:55,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735173638] [2020-11-12 03:29:55,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-12 03:29:55,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:55,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-12 03:29:55,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-11-12 03:29:55,309 INFO L87 Difference]: Start difference. First operand 1487 states and 2474 transitions. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:56,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:56,026 INFO L93 Difference]: Finished difference Result 2229 states and 3882 transitions. [2020-11-12 03:29:56,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-12 03:29:56,027 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2020-11-12 03:29:56,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:56,030 INFO L225 Difference]: With dead ends: 2229 [2020-11-12 03:29:56,031 INFO L226 Difference]: Without dead ends: 1959 [2020-11-12 03:29:56,032 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=267, Invalid=789, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 03:29:56,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2020-11-12 03:29:56,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1512. [2020-11-12 03:29:56,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1448 states have (on average 1.7506906077348066) internal successors, (2535), 1511 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:56,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 2535 transitions. [2020-11-12 03:29:56,063 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 2535 transitions. Word has length 66 [2020-11-12 03:29:56,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:56,064 INFO L481 AbstractCegarLoop]: Abstraction has 1512 states and 2535 transitions. [2020-11-12 03:29:56,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:56,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 2535 transitions. [2020-11-12 03:29:56,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-12 03:29:56,068 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:56,068 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:56,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-11-12 03:29:56,282 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:56,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:56,283 INFO L82 PathProgramCache]: Analyzing trace with hash -16418936, now seen corresponding path program 30 times [2020-11-12 03:29:56,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:56,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099183319] [2020-11-12 03:29:56,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:56,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:56,464 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:56,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099183319] [2020-11-12 03:29:56,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764206175] [2020-11-12 03:29:56,465 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:56,547 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-11-12 03:29:56,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:56,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-12 03:29:56,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:56,592 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:56,598 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:56,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:56,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-11-12 03:29:56,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046490721] [2020-11-12 03:29:56,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-12 03:29:56,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:56,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-12 03:29:56,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-11-12 03:29:56,600 INFO L87 Difference]: Start difference. First operand 1512 states and 2535 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:57,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:57,174 INFO L93 Difference]: Finished difference Result 3291 states and 5319 transitions. [2020-11-12 03:29:57,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-12 03:29:57,180 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2020-11-12 03:29:57,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:57,185 INFO L225 Difference]: With dead ends: 3291 [2020-11-12 03:29:57,186 INFO L226 Difference]: Without dead ends: 3006 [2020-11-12 03:29:57,186 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:29:57,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2020-11-12 03:29:57,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 1597. [2020-11-12 03:29:57,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1597 states, 1533 states have (on average 1.7827788649706457) internal successors, (2733), 1596 states have internal predecessors, (2733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:57,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1597 states to 1597 states and 2733 transitions. [2020-11-12 03:29:57,226 INFO L78 Accepts]: Start accepts. Automaton has 1597 states and 2733 transitions. Word has length 66 [2020-11-12 03:29:57,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:57,227 INFO L481 AbstractCegarLoop]: Abstraction has 1597 states and 2733 transitions. [2020-11-12 03:29:57,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:57,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1597 states and 2733 transitions. [2020-11-12 03:29:57,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-12 03:29:57,230 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:57,230 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:57,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:57,444 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:57,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:57,445 INFO L82 PathProgramCache]: Analyzing trace with hash 823558256, now seen corresponding path program 31 times [2020-11-12 03:29:57,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:57,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834063551] [2020-11-12 03:29:57,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:57,620 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:57,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834063551] [2020-11-12 03:29:57,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402674537] [2020-11-12 03:29:57,621 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 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:57,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-12 03:29:57,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:57,743 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:29:57,767 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:57,775 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:57,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:57,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-11-12 03:29:57,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769064855] [2020-11-12 03:29:57,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-12 03:29:57,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:57,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-12 03:29:57,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-11-12 03:29:57,777 INFO L87 Difference]: Start difference. First operand 1597 states and 2733 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:58,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:58,558 INFO L93 Difference]: Finished difference Result 2290 states and 3939 transitions. [2020-11-12 03:29:58,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-12 03:29:58,558 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2020-11-12 03:29:58,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:58,563 INFO L225 Difference]: With dead ends: 2290 [2020-11-12 03:29:58,563 INFO L226 Difference]: Without dead ends: 1894 [2020-11-12 03:29:58,564 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=311, Invalid=811, Unknown=0, NotChecked=0, Total=1122 [2020-11-12 03:29:58,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2020-11-12 03:29:58,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1362. [2020-11-12 03:29:58,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1298 states have (on average 1.7211093990755009) internal successors, (2234), 1361 states have internal predecessors, (2234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:58,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 2234 transitions. [2020-11-12 03:29:58,588 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 2234 transitions. Word has length 66 [2020-11-12 03:29:58,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:58,588 INFO L481 AbstractCegarLoop]: Abstraction has 1362 states and 2234 transitions. [2020-11-12 03:29:58,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:58,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 2234 transitions. [2020-11-12 03:29:58,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-12 03:29:58,592 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:58,592 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:58,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-11-12 03:29:58,807 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:58,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:58,808 INFO L82 PathProgramCache]: Analyzing trace with hash 887352337, now seen corresponding path program 32 times [2020-11-12 03:29:58,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:58,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57099758] [2020-11-12 03:29:58,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:59,044 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:59,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57099758] [2020-11-12 03:29:59,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501906159] [2020-11-12 03:29:59,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:29:59,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:29:59,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:29:59,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-12 03:29:59,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:29:59,178 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:29:59,191 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:59,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:29:59,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-11-12 03:29:59,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008064713] [2020-11-12 03:29:59,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-12 03:29:59,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:59,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-12 03:29:59,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-11-12 03:29:59,193 INFO L87 Difference]: Start difference. First operand 1362 states and 2234 transitions. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:59,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:59,634 INFO L93 Difference]: Finished difference Result 2159 states and 3764 transitions. [2020-11-12 03:29:59,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-12 03:29:59,635 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2020-11-12 03:29:59,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:59,639 INFO L225 Difference]: With dead ends: 2159 [2020-11-12 03:29:59,639 INFO L226 Difference]: Without dead ends: 1889 [2020-11-12 03:29:59,640 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:29:59,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2020-11-12 03:29:59,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1402. [2020-11-12 03:29:59,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 1338 states have (on average 1.7219730941704037) internal successors, (2304), 1401 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:59,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 2304 transitions. [2020-11-12 03:29:59,667 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 2304 transitions. Word has length 71 [2020-11-12 03:29:59,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:59,667 INFO L481 AbstractCegarLoop]: Abstraction has 1402 states and 2304 transitions. [2020-11-12 03:29:59,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:29:59,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 2304 transitions. [2020-11-12 03:29:59,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-12 03:29:59,671 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:59,671 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:59,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2020-11-12 03:29:59,872 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:59,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:59,873 INFO L82 PathProgramCache]: Analyzing trace with hash -2119124143, now seen corresponding path program 33 times [2020-11-12 03:29:59,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:59,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99635711] [2020-11-12 03:29:59,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:00,143 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:00,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99635711] [2020-11-12 03:30:00,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357958936] [2020-11-12 03:30:00,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:00,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-11-12 03:30:00,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:00,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-12 03:30:00,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:00,273 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:00,296 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:00,309 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:00,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:00,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2020-11-12 03:30:00,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831321899] [2020-11-12 03:30:00,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-12 03:30:00,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:00,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-12 03:30:00,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-11-12 03:30:00,312 INFO L87 Difference]: Start difference. First operand 1402 states and 2304 transitions. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:00,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:00,882 INFO L93 Difference]: Finished difference Result 2344 states and 4114 transitions. [2020-11-12 03:30:00,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-12 03:30:00,883 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2020-11-12 03:30:00,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:00,887 INFO L225 Difference]: With dead ends: 2344 [2020-11-12 03:30:00,888 INFO L226 Difference]: Without dead ends: 2074 [2020-11-12 03:30:00,888 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=221, Invalid=709, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:30:00,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2020-11-12 03:30:00,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 1427. [2020-11-12 03:30:00,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1427 states, 1363 states have (on average 1.7307410124724871) internal successors, (2359), 1426 states have internal predecessors, (2359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:00,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 2359 transitions. [2020-11-12 03:30:00,917 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 2359 transitions. Word has length 71 [2020-11-12 03:30:00,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:00,917 INFO L481 AbstractCegarLoop]: Abstraction has 1427 states and 2359 transitions. [2020-11-12 03:30:00,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:00,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 2359 transitions. [2020-11-12 03:30:00,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-12 03:30:00,920 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:00,920 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:01,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:01,121 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:01,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:01,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1194492655, now seen corresponding path program 34 times [2020-11-12 03:30:01,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:01,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260284620] [2020-11-12 03:30:01,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:01,332 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:01,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260284620] [2020-11-12 03:30:01,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184050527] [2020-11-12 03:30:01,333 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:01,413 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:30:01,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:01,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-12 03:30:01,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:01,439 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:01,453 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:01,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:01,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-11-12 03:30:01,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025757985] [2020-11-12 03:30:01,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-12 03:30:01,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:01,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-12 03:30:01,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-11-12 03:30:01,456 INFO L87 Difference]: Start difference. First operand 1427 states and 2359 transitions. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:01,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:01,994 INFO L93 Difference]: Finished difference Result 2359 states and 4124 transitions. [2020-11-12 03:30:01,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-12 03:30:01,995 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2020-11-12 03:30:01,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:01,998 INFO L225 Difference]: With dead ends: 2359 [2020-11-12 03:30:01,999 INFO L226 Difference]: Without dead ends: 2089 [2020-11-12 03:30:01,999 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=231, Invalid=699, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:30:02,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2020-11-12 03:30:02,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 1452. [2020-11-12 03:30:02,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1388 states have (on average 1.739193083573487) internal successors, (2414), 1451 states have internal predecessors, (2414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:02,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 2414 transitions. [2020-11-12 03:30:02,055 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 2414 transitions. Word has length 71 [2020-11-12 03:30:02,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:02,055 INFO L481 AbstractCegarLoop]: Abstraction has 1452 states and 2414 transitions. [2020-11-12 03:30:02,055 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) [2020-11-12 03:30:02,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 2414 transitions. [2020-11-12 03:30:02,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-12 03:30:02,058 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:02,059 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:02,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2020-11-12 03:30:02,274 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:02,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:02,275 INFO L82 PathProgramCache]: Analyzing trace with hash 530407983, now seen corresponding path program 35 times [2020-11-12 03:30:02,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:02,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566064915] [2020-11-12 03:30:02,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:02,494 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:02,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566064915] [2020-11-12 03:30:02,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944188906] [2020-11-12 03:30:02,495 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:02,586 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-11-12 03:30:02,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:02,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-12 03:30:02,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:02,622 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:02,644 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:02,659 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:02,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:02,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2020-11-12 03:30:02,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364699237] [2020-11-12 03:30:02,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-12 03:30:02,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:02,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-12 03:30:02,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-11-12 03:30:02,662 INFO L87 Difference]: Start difference. First operand 1452 states and 2414 transitions. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:03,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:03,351 INFO L93 Difference]: Finished difference Result 2359 states and 4104 transitions. [2020-11-12 03:30:03,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-12 03:30:03,352 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2020-11-12 03:30:03,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:03,356 INFO L225 Difference]: With dead ends: 2359 [2020-11-12 03:30:03,356 INFO L226 Difference]: Without dead ends: 2089 [2020-11-12 03:30:03,357 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=253, Invalid=803, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 03:30:03,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2020-11-12 03:30:03,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 1477. [2020-11-12 03:30:03,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1477 states, 1413 states have (on average 1.7473460721868366) internal successors, (2469), 1476 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:03,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 2469 transitions. [2020-11-12 03:30:03,387 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 2469 transitions. Word has length 71 [2020-11-12 03:30:03,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:03,387 INFO L481 AbstractCegarLoop]: Abstraction has 1477 states and 2469 transitions. [2020-11-12 03:30:03,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:03,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 2469 transitions. [2020-11-12 03:30:03,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-12 03:30:03,390 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:03,390 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:03,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:03,591 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:03,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:03,592 INFO L82 PathProgramCache]: Analyzing trace with hash 828929869, now seen corresponding path program 36 times [2020-11-12 03:30:03,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:03,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242834817] [2020-11-12 03:30:03,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:03,803 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:03,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242834817] [2020-11-12 03:30:03,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657861300] [2020-11-12 03:30:03,804 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:03,888 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-11-12 03:30:03,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:03,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-12 03:30:03,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:03,912 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:03,918 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:03,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:03,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-11-12 03:30:03,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104815402] [2020-11-12 03:30:03,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-12 03:30:03,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:03,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-12 03:30:03,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-11-12 03:30:03,920 INFO L87 Difference]: Start difference. First operand 1477 states and 2469 transitions. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:04,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:04,502 INFO L93 Difference]: Finished difference Result 2359 states and 4084 transitions. [2020-11-12 03:30:04,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-12 03:30:04,503 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2020-11-12 03:30:04,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:04,508 INFO L225 Difference]: With dead ends: 2359 [2020-11-12 03:30:04,508 INFO L226 Difference]: Without dead ends: 2089 [2020-11-12 03:30:04,509 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=277, Invalid=779, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 03:30:04,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2020-11-12 03:30:04,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 1502. [2020-11-12 03:30:04,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1438 states have (on average 1.7552155771905424) internal successors, (2524), 1501 states have internal predecessors, (2524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:04,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 2524 transitions. [2020-11-12 03:30:04,539 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 2524 transitions. Word has length 71 [2020-11-12 03:30:04,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:04,540 INFO L481 AbstractCegarLoop]: Abstraction has 1502 states and 2524 transitions. [2020-11-12 03:30:04,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:04,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 2524 transitions. [2020-11-12 03:30:04,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-12 03:30:04,542 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:04,542 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:04,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-11-12 03:30:04,756 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:04,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:04,757 INFO L82 PathProgramCache]: Analyzing trace with hash -792369523, now seen corresponding path program 37 times [2020-11-12 03:30:04,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:04,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647688006] [2020-11-12 03:30:04,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:04,988 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:04,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647688006] [2020-11-12 03:30:04,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899681953] [2020-11-12 03:30:04,988 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:05,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-12 03:30:05,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:05,127 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:05,159 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:05,172 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:05,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:05,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2020-11-12 03:30:05,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242843723] [2020-11-12 03:30:05,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-12 03:30:05,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:05,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-12 03:30:05,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-11-12 03:30:05,174 INFO L87 Difference]: Start difference. First operand 1502 states and 2524 transitions. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:05,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:05,933 INFO L93 Difference]: Finished difference Result 2404 states and 4142 transitions. [2020-11-12 03:30:05,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-12 03:30:05,934 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2020-11-12 03:30:05,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:05,938 INFO L225 Difference]: With dead ends: 2404 [2020-11-12 03:30:05,939 INFO L226 Difference]: Without dead ends: 2134 [2020-11-12 03:30:05,940 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=301, Invalid=889, Unknown=0, NotChecked=0, Total=1190 [2020-11-12 03:30:05,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2134 states. [2020-11-12 03:30:05,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2134 to 1527. [2020-11-12 03:30:05,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1527 states, 1463 states have (on average 1.7669172932330828) internal successors, (2585), 1526 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:05,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 2585 transitions. [2020-11-12 03:30:05,984 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 2585 transitions. Word has length 71 [2020-11-12 03:30:05,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:05,984 INFO L481 AbstractCegarLoop]: Abstraction has 1527 states and 2585 transitions. [2020-11-12 03:30:05,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:05,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 2585 transitions. [2020-11-12 03:30:05,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-12 03:30:05,987 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:05,987 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:06,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:06,203 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:06,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:06,204 INFO L82 PathProgramCache]: Analyzing trace with hash 341720641, now seen corresponding path program 38 times [2020-11-12 03:30:06,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:06,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860546399] [2020-11-12 03:30:06,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:06,395 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:06,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860546399] [2020-11-12 03:30:06,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339919081] [2020-11-12 03:30:06,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:06,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:30:06,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:06,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-12 03:30:06,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:06,505 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:06,514 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:06,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:06,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-11-12 03:30:06,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106330389] [2020-11-12 03:30:06,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-12 03:30:06,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:06,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-12 03:30:06,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-11-12 03:30:06,517 INFO L87 Difference]: Start difference. First operand 1527 states and 2585 transitions. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:07,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:07,187 INFO L93 Difference]: Finished difference Result 3466 states and 5554 transitions. [2020-11-12 03:30:07,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-12 03:30:07,189 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2020-11-12 03:30:07,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:07,195 INFO L225 Difference]: With dead ends: 3466 [2020-11-12 03:30:07,196 INFO L226 Difference]: Without dead ends: 3181 [2020-11-12 03:30:07,196 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=340, Invalid=850, Unknown=0, NotChecked=0, Total=1190 [2020-11-12 03:30:07,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3181 states. [2020-11-12 03:30:07,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3181 to 1612. [2020-11-12 03:30:07,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1548 states have (on average 1.7978036175710594) internal successors, (2783), 1611 states have internal predecessors, (2783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:07,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2783 transitions. [2020-11-12 03:30:07,239 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2783 transitions. Word has length 71 [2020-11-12 03:30:07,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:07,240 INFO L481 AbstractCegarLoop]: Abstraction has 1612 states and 2783 transitions. [2020-11-12 03:30:07,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:07,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2783 transitions. [2020-11-12 03:30:07,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-12 03:30:07,242 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:07,242 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:07,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-11-12 03:30:07,444 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:07,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:07,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1181697833, now seen corresponding path program 39 times [2020-11-12 03:30:07,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:07,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181952100] [2020-11-12 03:30:07,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:07,654 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:07,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181952100] [2020-11-12 03:30:07,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919767478] [2020-11-12 03:30:07,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:07,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-11-12 03:30:07,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:07,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-12 03:30:07,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:07,825 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:07,846 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:07,860 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:07,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:07,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2020-11-12 03:30:07,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709335572] [2020-11-12 03:30:07,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-12 03:30:07,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:07,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-12 03:30:07,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-11-12 03:30:07,864 INFO L87 Difference]: Start difference. First operand 1612 states and 2783 transitions. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:08,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:08,722 INFO L93 Difference]: Finished difference Result 2465 states and 4149 transitions. [2020-11-12 03:30:08,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-12 03:30:08,723 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2020-11-12 03:30:08,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:08,727 INFO L225 Difference]: With dead ends: 2465 [2020-11-12 03:30:08,727 INFO L226 Difference]: Without dead ends: 2069 [2020-11-12 03:30:08,728 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=368, Invalid=964, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 03:30:08,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2020-11-12 03:30:08,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1317. [2020-11-12 03:30:08,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1317 states, 1253 states have (on average 1.719074221867518) internal successors, (2154), 1316 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:08,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 2154 transitions. [2020-11-12 03:30:08,756 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 2154 transitions. Word has length 71 [2020-11-12 03:30:08,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:08,756 INFO L481 AbstractCegarLoop]: Abstraction has 1317 states and 2154 transitions. [2020-11-12 03:30:08,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:08,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 2154 transitions. [2020-11-12 03:30:08,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-12 03:30:08,758 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:08,758 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:08,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-11-12 03:30:08,960 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:08,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:08,961 INFO L82 PathProgramCache]: Analyzing trace with hash 238478381, now seen corresponding path program 40 times [2020-11-12 03:30:08,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:08,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871031476] [2020-11-12 03:30:08,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:09,250 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:09,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871031476] [2020-11-12 03:30:09,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221053777] [2020-11-12 03:30:09,250 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:09,331 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:30:09,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:09,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-12 03:30:09,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:09,377 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:09,416 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:09,432 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:09,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:09,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 19 [2020-11-12 03:30:09,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390026738] [2020-11-12 03:30:09,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:30:09,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:09,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:30:09,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:30:09,435 INFO L87 Difference]: Start difference. First operand 1317 states and 2154 transitions. Second operand has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:10,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:10,051 INFO L93 Difference]: Finished difference Result 2325 states and 3898 transitions. [2020-11-12 03:30:10,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-12 03:30:10,051 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-11-12 03:30:10,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:10,057 INFO L225 Difference]: With dead ends: 2325 [2020-11-12 03:30:10,058 INFO L226 Difference]: Without dead ends: 1991 [2020-11-12 03:30:10,058 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=308, Invalid=882, Unknown=0, NotChecked=0, Total=1190 [2020-11-12 03:30:10,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2020-11-12 03:30:10,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 1392. [2020-11-12 03:30:10,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1328 states have (on average 1.7349397590361446) internal successors, (2304), 1391 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:10,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 2304 transitions. [2020-11-12 03:30:10,103 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 2304 transitions. Word has length 76 [2020-11-12 03:30:10,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:10,104 INFO L481 AbstractCegarLoop]: Abstraction has 1392 states and 2304 transitions. [2020-11-12 03:30:10,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:10,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 2304 transitions. [2020-11-12 03:30:10,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-12 03:30:10,107 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:10,108 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:10,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:10,323 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:10,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:10,324 INFO L82 PathProgramCache]: Analyzing trace with hash -124829105, now seen corresponding path program 41 times [2020-11-12 03:30:10,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:10,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399776252] [2020-11-12 03:30:10,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:10,596 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:10,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399776252] [2020-11-12 03:30:10,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473035188] [2020-11-12 03:30:10,597 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:10,688 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-12 03:30:10,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:10,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-12 03:30:10,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:10,741 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:10,756 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:10,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:10,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2020-11-12 03:30:10,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574474350] [2020-11-12 03:30:10,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-12 03:30:10,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:10,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-12 03:30:10,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-11-12 03:30:10,759 INFO L87 Difference]: Start difference. First operand 1392 states and 2304 transitions. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:11,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:11,180 INFO L93 Difference]: Finished difference Result 2554 states and 4554 transitions. [2020-11-12 03:30:11,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-12 03:30:11,181 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-11-12 03:30:11,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:11,185 INFO L225 Difference]: With dead ends: 2554 [2020-11-12 03:30:11,186 INFO L226 Difference]: Without dead ends: 2284 [2020-11-12 03:30:11,186 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:30:11,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2284 states. [2020-11-12 03:30:11,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2284 to 1487. [2020-11-12 03:30:11,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1487 states, 1423 states have (on average 1.7315530569219957) internal successors, (2464), 1486 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:11,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 2464 transitions. [2020-11-12 03:30:11,226 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 2464 transitions. Word has length 76 [2020-11-12 03:30:11,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:11,226 INFO L481 AbstractCegarLoop]: Abstraction has 1487 states and 2464 transitions. [2020-11-12 03:30:11,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:11,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 2464 transitions. [2020-11-12 03:30:11,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-12 03:30:11,228 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:11,229 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:11,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-11-12 03:30:11,434 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:11,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:11,435 INFO L82 PathProgramCache]: Analyzing trace with hash 832360399, now seen corresponding path program 42 times [2020-11-12 03:30:11,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:11,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655138984] [2020-11-12 03:30:11,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:11,740 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:11,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655138984] [2020-11-12 03:30:11,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819286599] [2020-11-12 03:30:11,741 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:11,828 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-11-12 03:30:11,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:11,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-12 03:30:11,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:11,859 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:11,903 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:11,917 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:11,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:11,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-11-12 03:30:11,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855791418] [2020-11-12 03:30:11,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-12 03:30:11,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:11,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-12 03:30:11,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-11-12 03:30:11,920 INFO L87 Difference]: Start difference. First operand 1487 states and 2464 transitions. Second operand has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:12,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:12,509 INFO L93 Difference]: Finished difference Result 2509 states and 4444 transitions. [2020-11-12 03:30:12,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-12 03:30:12,516 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-11-12 03:30:12,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:12,521 INFO L225 Difference]: With dead ends: 2509 [2020-11-12 03:30:12,521 INFO L226 Difference]: Without dead ends: 2239 [2020-11-12 03:30:12,522 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=792, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 03:30:12,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2239 states. [2020-11-12 03:30:12,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2239 to 1537. [2020-11-12 03:30:12,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1537 states, 1473 states have (on average 1.7270875763747455) internal successors, (2544), 1536 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:12,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1537 states to 1537 states and 2544 transitions. [2020-11-12 03:30:12,552 INFO L78 Accepts]: Start accepts. Automaton has 1537 states and 2544 transitions. Word has length 76 [2020-11-12 03:30:12,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:12,552 INFO L481 AbstractCegarLoop]: Abstraction has 1537 states and 2544 transitions. [2020-11-12 03:30:12,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:12,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1537 states and 2544 transitions. [2020-11-12 03:30:12,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-12 03:30:12,554 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:12,554 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:12,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:12,760 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:12,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:12,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1617340775, now seen corresponding path program 43 times [2020-11-12 03:30:12,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:12,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447682714] [2020-11-12 03:30:12,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:12,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:13,011 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:13,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447682714] [2020-11-12 03:30:13,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135318321] [2020-11-12 03:30:13,012 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:13,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-12 03:30:13,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:13,169 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:13,184 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:13,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:13,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2020-11-12 03:30:13,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229495630] [2020-11-12 03:30:13,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-12 03:30:13,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:13,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-12 03:30:13,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-11-12 03:30:13,187 INFO L87 Difference]: Start difference. First operand 1537 states and 2544 transitions. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:13,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:13,690 INFO L93 Difference]: Finished difference Result 2534 states and 4474 transitions. [2020-11-12 03:30:13,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-12 03:30:13,690 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-11-12 03:30:13,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:13,694 INFO L225 Difference]: With dead ends: 2534 [2020-11-12 03:30:13,695 INFO L226 Difference]: Without dead ends: 2264 [2020-11-12 03:30:13,695 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=229, Invalid=701, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:30:13,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2264 states. [2020-11-12 03:30:13,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2264 to 1587. [2020-11-12 03:30:13,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1587 states, 1523 states have (on average 1.7229152987524623) internal successors, (2624), 1586 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:13,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 2624 transitions. [2020-11-12 03:30:13,723 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 2624 transitions. Word has length 76 [2020-11-12 03:30:13,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:13,723 INFO L481 AbstractCegarLoop]: Abstraction has 1587 states and 2624 transitions. [2020-11-12 03:30:13,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:13,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 2624 transitions. [2020-11-12 03:30:13,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-12 03:30:13,726 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:13,726 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:13,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:13,928 INFO L429 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:13,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:13,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1389135705, now seen corresponding path program 44 times [2020-11-12 03:30:13,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:13,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212251448] [2020-11-12 03:30:13,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:14,206 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:14,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212251448] [2020-11-12 03:30:14,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42865796] [2020-11-12 03:30:14,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:14,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:30:14,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:14,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-12 03:30:14,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:14,340 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:14,397 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:14,406 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:14,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:14,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-11-12 03:30:14,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982471929] [2020-11-12 03:30:14,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-12 03:30:14,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:14,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-12 03:30:14,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-11-12 03:30:14,408 INFO L87 Difference]: Start difference. First operand 1587 states and 2624 transitions. Second operand has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:15,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:15,090 INFO L93 Difference]: Finished difference Result 2534 states and 4454 transitions. [2020-11-12 03:30:15,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-12 03:30:15,091 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-11-12 03:30:15,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:15,095 INFO L225 Difference]: With dead ends: 2534 [2020-11-12 03:30:15,095 INFO L226 Difference]: Without dead ends: 2264 [2020-11-12 03:30:15,095 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=286, Invalid=904, Unknown=0, NotChecked=0, Total=1190 [2020-11-12 03:30:15,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2264 states. [2020-11-12 03:30:15,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2264 to 1612. [2020-11-12 03:30:15,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1548 states have (on average 1.7306201550387597) internal successors, (2679), 1611 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:15,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2679 transitions. [2020-11-12 03:30:15,128 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2679 transitions. Word has length 76 [2020-11-12 03:30:15,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:15,128 INFO L481 AbstractCegarLoop]: Abstraction has 1612 states and 2679 transitions. [2020-11-12 03:30:15,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:15,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2679 transitions. [2020-11-12 03:30:15,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-12 03:30:15,131 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:15,131 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:15,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2020-11-12 03:30:15,340 INFO L429 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:15,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:15,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1924481093, now seen corresponding path program 45 times [2020-11-12 03:30:15,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:15,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7901712] [2020-11-12 03:30:15,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:15,555 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:15,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7901712] [2020-11-12 03:30:15,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157886075] [2020-11-12 03:30:15,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:15,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-11-12 03:30:15,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:15,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-12 03:30:15,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:15,684 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:15,693 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:15,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:15,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2020-11-12 03:30:15,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669753146] [2020-11-12 03:30:15,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-12 03:30:15,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:15,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-12 03:30:15,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-11-12 03:30:15,695 INFO L87 Difference]: Start difference. First operand 1612 states and 2679 transitions. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:16,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:16,246 INFO L93 Difference]: Finished difference Result 2509 states and 4409 transitions. [2020-11-12 03:30:16,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-12 03:30:16,247 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-11-12 03:30:16,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:16,250 INFO L225 Difference]: With dead ends: 2509 [2020-11-12 03:30:16,251 INFO L226 Difference]: Without dead ends: 2239 [2020-11-12 03:30:16,251 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 03:30:16,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2239 states. [2020-11-12 03:30:16,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2239 to 1637. [2020-11-12 03:30:16,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1637 states, 1573 states have (on average 1.7380801017164653) internal successors, (2734), 1636 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:16,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 2734 transitions. [2020-11-12 03:30:16,274 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 2734 transitions. Word has length 76 [2020-11-12 03:30:16,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:16,275 INFO L481 AbstractCegarLoop]: Abstraction has 1637 states and 2734 transitions. [2020-11-12 03:30:16,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:16,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 2734 transitions. [2020-11-12 03:30:16,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-12 03:30:16,276 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:16,277 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:16,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:16,478 INFO L429 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:16,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:16,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1260396421, now seen corresponding path program 46 times [2020-11-12 03:30:16,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:16,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561501243] [2020-11-12 03:30:16,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:16,744 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:16,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561501243] [2020-11-12 03:30:16,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524065721] [2020-11-12 03:30:16,745 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:16,827 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:30:16,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:16,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-12 03:30:16,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:16,860 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:16,902 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:16,910 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:16,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:16,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-11-12 03:30:16,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871376119] [2020-11-12 03:30:16,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-12 03:30:16,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:16,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-12 03:30:16,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-11-12 03:30:16,912 INFO L87 Difference]: Start difference. First operand 1637 states and 2734 transitions. Second operand has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:17,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:17,718 INFO L93 Difference]: Finished difference Result 2484 states and 4364 transitions. [2020-11-12 03:30:17,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-12 03:30:17,718 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-11-12 03:30:17,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:17,722 INFO L225 Difference]: With dead ends: 2484 [2020-11-12 03:30:17,722 INFO L226 Difference]: Without dead ends: 2214 [2020-11-12 03:30:17,722 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=324, Invalid=1008, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 03:30:17,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2020-11-12 03:30:17,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 1662. [2020-11-12 03:30:17,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1598 states have (on average 1.7453066332916145) internal successors, (2789), 1661 states have internal predecessors, (2789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:17,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2789 transitions. [2020-11-12 03:30:17,750 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2789 transitions. Word has length 76 [2020-11-12 03:30:17,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:17,751 INFO L481 AbstractCegarLoop]: Abstraction has 1662 states and 2789 transitions. [2020-11-12 03:30:17,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:17,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2789 transitions. [2020-11-12 03:30:17,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-12 03:30:17,753 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:17,754 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:17,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-11-12 03:30:17,955 INFO L429 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:17,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:17,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1558918307, now seen corresponding path program 47 times [2020-11-12 03:30:17,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:17,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591425528] [2020-11-12 03:30:17,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:18,148 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:18,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591425528] [2020-11-12 03:30:18,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020501069] [2020-11-12 03:30:18,149 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:18,226 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-11-12 03:30:18,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:18,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-12 03:30:18,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:18,272 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:18,282 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:18,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:18,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2020-11-12 03:30:18,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9297248] [2020-11-12 03:30:18,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-12 03:30:18,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:18,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-12 03:30:18,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-11-12 03:30:18,284 INFO L87 Difference]: Start difference. First operand 1662 states and 2789 transitions. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:18,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:18,936 INFO L93 Difference]: Finished difference Result 2459 states and 4319 transitions. [2020-11-12 03:30:18,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-12 03:30:18,936 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-11-12 03:30:18,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:18,939 INFO L225 Difference]: With dead ends: 2459 [2020-11-12 03:30:18,940 INFO L226 Difference]: Without dead ends: 2189 [2020-11-12 03:30:18,940 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=305, Invalid=885, Unknown=0, NotChecked=0, Total=1190 [2020-11-12 03:30:18,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2189 states. [2020-11-12 03:30:18,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2189 to 1687. [2020-11-12 03:30:18,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1623 states have (on average 1.7523105360443623) internal successors, (2844), 1686 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:18,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2844 transitions. [2020-11-12 03:30:18,979 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2844 transitions. Word has length 76 [2020-11-12 03:30:18,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:18,979 INFO L481 AbstractCegarLoop]: Abstraction has 1687 states and 2844 transitions. [2020-11-12 03:30:18,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:18,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2844 transitions. [2020-11-12 03:30:18,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-12 03:30:18,983 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:18,983 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:19,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-11-12 03:30:19,197 INFO L429 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:19,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:19,198 INFO L82 PathProgramCache]: Analyzing trace with hash -62381085, now seen corresponding path program 48 times [2020-11-12 03:30:19,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:19,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221518230] [2020-11-12 03:30:19,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:19,426 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:19,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221518230] [2020-11-12 03:30:19,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733288951] [2020-11-12 03:30:19,426 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:19,507 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-11-12 03:30:19,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:19,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-12 03:30:19,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:19,542 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:19,586 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:19,605 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:19,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:19,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-11-12 03:30:19,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797152708] [2020-11-12 03:30:19,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-12 03:30:19,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:19,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-12 03:30:19,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-11-12 03:30:19,609 INFO L87 Difference]: Start difference. First operand 1687 states and 2844 transitions. Second operand has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:20,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:20,472 INFO L93 Difference]: Finished difference Result 2479 states and 4352 transitions. [2020-11-12 03:30:20,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-12 03:30:20,473 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-11-12 03:30:20,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:20,476 INFO L225 Difference]: With dead ends: 2479 [2020-11-12 03:30:20,476 INFO L226 Difference]: Without dead ends: 2209 [2020-11-12 03:30:20,477 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=378, Invalid=1104, Unknown=0, NotChecked=0, Total=1482 [2020-11-12 03:30:20,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2209 states. [2020-11-12 03:30:20,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2209 to 1712. [2020-11-12 03:30:20,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1712 states, 1648 states have (on average 1.762742718446602) internal successors, (2905), 1711 states have internal predecessors, (2905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:20,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1712 states to 1712 states and 2905 transitions. [2020-11-12 03:30:20,499 INFO L78 Accepts]: Start accepts. Automaton has 1712 states and 2905 transitions. Word has length 76 [2020-11-12 03:30:20,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:20,499 INFO L481 AbstractCegarLoop]: Abstraction has 1712 states and 2905 transitions. [2020-11-12 03:30:20,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:20,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1712 states and 2905 transitions. [2020-11-12 03:30:20,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-12 03:30:20,502 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:20,502 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:20,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2020-11-12 03:30:20,703 INFO L429 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:20,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:20,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1071709079, now seen corresponding path program 49 times [2020-11-12 03:30:20,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:20,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524099181] [2020-11-12 03:30:20,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:20,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:20,887 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:20,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524099181] [2020-11-12 03:30:20,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304350362] [2020-11-12 03:30:20,888 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:20,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-12 03:30:20,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:21,020 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:21,029 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:21,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:21,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2020-11-12 03:30:21,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251790966] [2020-11-12 03:30:21,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-12 03:30:21,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:21,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-12 03:30:21,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-11-12 03:30:21,031 INFO L87 Difference]: Start difference. First operand 1712 states and 2905 transitions. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:21,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:21,723 INFO L93 Difference]: Finished difference Result 3541 states and 5789 transitions. [2020-11-12 03:30:21,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-12 03:30:21,724 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-11-12 03:30:21,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:21,728 INFO L225 Difference]: With dead ends: 3541 [2020-11-12 03:30:21,728 INFO L226 Difference]: Without dead ends: 3256 [2020-11-12 03:30:21,729 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=368, Invalid=964, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 03:30:21,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3256 states. [2020-11-12 03:30:21,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3256 to 1797. [2020-11-12 03:30:21,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1733 states have (on average 1.790536641661858) internal successors, (3103), 1796 states have internal predecessors, (3103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:21,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 3103 transitions. [2020-11-12 03:30:21,765 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 3103 transitions. Word has length 76 [2020-11-12 03:30:21,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:21,765 INFO L481 AbstractCegarLoop]: Abstraction has 1797 states and 3103 transitions. [2020-11-12 03:30:21,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:21,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 3103 transitions. [2020-11-12 03:30:21,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-12 03:30:21,767 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:21,768 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:21,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-11-12 03:30:21,969 INFO L429 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:21,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:21,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1911686271, now seen corresponding path program 50 times [2020-11-12 03:30:21,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:21,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689252309] [2020-11-12 03:30:21,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:21,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:22,206 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:22,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689252309] [2020-11-12 03:30:22,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306086978] [2020-11-12 03:30:22,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:22,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:30:22,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:22,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-12 03:30:22,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:22,316 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:22,346 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:22,354 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:22,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:22,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-11-12 03:30:22,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692496080] [2020-11-12 03:30:22,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-12 03:30:22,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:22,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-12 03:30:22,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-11-12 03:30:22,356 INFO L87 Difference]: Start difference. First operand 1797 states and 3103 transitions. Second operand has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:23,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:23,439 INFO L93 Difference]: Finished difference Result 2956 states and 5225 transitions. [2020-11-12 03:30:23,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-12 03:30:23,440 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-11-12 03:30:23,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:23,443 INFO L225 Difference]: With dead ends: 2956 [2020-11-12 03:30:23,443 INFO L226 Difference]: Without dead ends: 2384 [2020-11-12 03:30:23,443 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=484, Invalid=1408, Unknown=0, NotChecked=0, Total=1892 [2020-11-12 03:30:23,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2384 states. [2020-11-12 03:30:23,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2384 to 1692. [2020-11-12 03:30:23,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1692 states, 1628 states have (on average 1.7782555282555284) internal successors, (2895), 1691 states have internal predecessors, (2895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:23,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 2895 transitions. [2020-11-12 03:30:23,475 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 2895 transitions. Word has length 76 [2020-11-12 03:30:23,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:23,475 INFO L481 AbstractCegarLoop]: Abstraction has 1692 states and 2895 transitions. [2020-11-12 03:30:23,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:23,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 2895 transitions. [2020-11-12 03:30:23,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-12 03:30:23,478 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:23,478 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:23,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:23,680 INFO L429 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:23,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:23,681 INFO L82 PathProgramCache]: Analyzing trace with hash -77134974, now seen corresponding path program 51 times [2020-11-12 03:30:23,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:23,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735095309] [2020-11-12 03:30:23,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:23,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:23,958 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:23,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735095309] [2020-11-12 03:30:23,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730814353] [2020-11-12 03:30:23,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:24,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-11-12 03:30:24,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:24,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-12 03:30:24,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:24,097 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:24,110 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:24,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:24,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2020-11-12 03:30:24,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178364645] [2020-11-12 03:30:24,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-12 03:30:24,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:24,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-12 03:30:24,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-11-12 03:30:24,112 INFO L87 Difference]: Start difference. First operand 1692 states and 2895 transitions. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:24,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:24,637 INFO L93 Difference]: Finished difference Result 2564 states and 4570 transitions. [2020-11-12 03:30:24,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-12 03:30:24,638 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-11-12 03:30:24,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:24,642 INFO L225 Difference]: With dead ends: 2564 [2020-11-12 03:30:24,642 INFO L226 Difference]: Without dead ends: 2294 [2020-11-12 03:30:24,643 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=262, Invalid=794, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 03:30:24,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2020-11-12 03:30:24,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 1707. [2020-11-12 03:30:24,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1643 states have (on average 1.7711503347534996) internal successors, (2910), 1706 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:24,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2910 transitions. [2020-11-12 03:30:24,667 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2910 transitions. Word has length 81 [2020-11-12 03:30:24,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:24,667 INFO L481 AbstractCegarLoop]: Abstraction has 1707 states and 2910 transitions. [2020-11-12 03:30:24,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:24,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2910 transitions. [2020-11-12 03:30:24,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-12 03:30:24,669 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:24,669 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:24,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:24,870 INFO L429 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:24,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:24,871 INFO L82 PathProgramCache]: Analyzing trace with hash -555105598, now seen corresponding path program 52 times [2020-11-12 03:30:24,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:24,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134716471] [2020-11-12 03:30:24,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:25,142 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:25,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134716471] [2020-11-12 03:30:25,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947199565] [2020-11-12 03:30:25,142 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:25,220 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:30:25,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:25,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-12 03:30:25,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:25,252 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:25,302 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:25,313 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:25,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:25,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2020-11-12 03:30:25,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948026653] [2020-11-12 03:30:25,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-12 03:30:25,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:25,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-12 03:30:25,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2020-11-12 03:30:25,315 INFO L87 Difference]: Start difference. First operand 1707 states and 2910 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:25,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:25,925 INFO L93 Difference]: Finished difference Result 2774 states and 4965 transitions. [2020-11-12 03:30:25,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-12 03:30:25,926 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-11-12 03:30:25,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:25,930 INFO L225 Difference]: With dead ends: 2774 [2020-11-12 03:30:25,931 INFO L226 Difference]: Without dead ends: 2504 [2020-11-12 03:30:25,931 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=305, Invalid=955, Unknown=0, NotChecked=0, Total=1260 [2020-11-12 03:30:25,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2504 states. [2020-11-12 03:30:25,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2504 to 1707. [2020-11-12 03:30:25,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1643 states have (on average 1.7711503347534996) internal successors, (2910), 1706 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:25,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2910 transitions. [2020-11-12 03:30:25,954 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2910 transitions. Word has length 81 [2020-11-12 03:30:25,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:25,954 INFO L481 AbstractCegarLoop]: Abstraction has 1707 states and 2910 transitions. [2020-11-12 03:30:25,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:25,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2910 transitions. [2020-11-12 03:30:25,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-12 03:30:25,957 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:25,957 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:26,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:26,159 INFO L429 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:26,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:26,160 INFO L82 PathProgramCache]: Analyzing trace with hash 591731936, now seen corresponding path program 53 times [2020-11-12 03:30:26,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:26,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298817342] [2020-11-12 03:30:26,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:26,437 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:26,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298817342] [2020-11-12 03:30:26,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818812593] [2020-11-12 03:30:26,438 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:26,531 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-12 03:30:26,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:26,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-12 03:30:26,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:26,588 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:26,598 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:26,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:26,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2020-11-12 03:30:26,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735800658] [2020-11-12 03:30:26,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-12 03:30:26,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:26,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-12 03:30:26,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-11-12 03:30:26,601 INFO L87 Difference]: Start difference. First operand 1707 states and 2910 transitions. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:27,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:27,220 INFO L93 Difference]: Finished difference Result 2764 states and 4920 transitions. [2020-11-12 03:30:27,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-12 03:30:27,221 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-11-12 03:30:27,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:27,225 INFO L225 Difference]: With dead ends: 2764 [2020-11-12 03:30:27,225 INFO L226 Difference]: Without dead ends: 2494 [2020-11-12 03:30:27,225 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2020-11-12 03:30:27,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2494 states. [2020-11-12 03:30:27,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2494 to 1707. [2020-11-12 03:30:27,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1643 states have (on average 1.7711503347534996) internal successors, (2910), 1706 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:27,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2910 transitions. [2020-11-12 03:30:27,251 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2910 transitions. Word has length 81 [2020-11-12 03:30:27,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:27,252 INFO L481 AbstractCegarLoop]: Abstraction has 1707 states and 2910 transitions. [2020-11-12 03:30:27,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:27,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2910 transitions. [2020-11-12 03:30:27,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-12 03:30:27,255 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:27,255 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:27,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-11-12 03:30:27,456 INFO L429 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:27,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:27,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1880222752, now seen corresponding path program 54 times [2020-11-12 03:30:27,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:27,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793862255] [2020-11-12 03:30:27,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:27,707 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:27,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793862255] [2020-11-12 03:30:27,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202283498] [2020-11-12 03:30:27,707 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:27,792 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-11-12 03:30:27,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:27,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-12 03:30:27,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:27,827 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:27,867 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:27,877 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:27,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:27,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2020-11-12 03:30:27,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014693893] [2020-11-12 03:30:27,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-12 03:30:27,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:27,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-12 03:30:27,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-11-12 03:30:27,878 INFO L87 Difference]: Start difference. First operand 1707 states and 2910 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:28,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:28,657 INFO L93 Difference]: Finished difference Result 2739 states and 4845 transitions. [2020-11-12 03:30:28,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-12 03:30:28,658 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-11-12 03:30:28,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:28,661 INFO L225 Difference]: With dead ends: 2739 [2020-11-12 03:30:28,662 INFO L226 Difference]: Without dead ends: 2469 [2020-11-12 03:30:28,662 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=334, Invalid=1072, Unknown=0, NotChecked=0, Total=1406 [2020-11-12 03:30:28,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2020-11-12 03:30:28,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 1707. [2020-11-12 03:30:28,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1643 states have (on average 1.7711503347534996) internal successors, (2910), 1706 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:28,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2910 transitions. [2020-11-12 03:30:28,691 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2910 transitions. Word has length 81 [2020-11-12 03:30:28,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:28,691 INFO L481 AbstractCegarLoop]: Abstraction has 1707 states and 2910 transitions. [2020-11-12 03:30:28,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:28,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2910 transitions. [2020-11-12 03:30:28,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-12 03:30:28,695 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:28,695 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:28,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:28,910 INFO L429 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:28,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:28,911 INFO L82 PathProgramCache]: Analyzing trace with hash 898872254, now seen corresponding path program 55 times [2020-11-12 03:30:28,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:28,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114662867] [2020-11-12 03:30:28,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:29,180 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:29,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114662867] [2020-11-12 03:30:29,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788487479] [2020-11-12 03:30:29,181 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:29,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-12 03:30:29,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:29,348 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:29,370 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:29,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:29,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2020-11-12 03:30:29,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038104752] [2020-11-12 03:30:29,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-12 03:30:29,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:29,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-12 03:30:29,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-11-12 03:30:29,372 INFO L87 Difference]: Start difference. First operand 1707 states and 2910 transitions. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:30,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:30,015 INFO L93 Difference]: Finished difference Result 2714 states and 4770 transitions. [2020-11-12 03:30:30,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-12 03:30:30,016 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-11-12 03:30:30,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:30,018 INFO L225 Difference]: With dead ends: 2714 [2020-11-12 03:30:30,018 INFO L226 Difference]: Without dead ends: 2444 [2020-11-12 03:30:30,019 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=354, Invalid=1052, Unknown=0, NotChecked=0, Total=1406 [2020-11-12 03:30:30,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2444 states. [2020-11-12 03:30:30,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2444 to 1707. [2020-11-12 03:30:30,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1643 states have (on average 1.7711503347534996) internal successors, (2910), 1706 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:30,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2910 transitions. [2020-11-12 03:30:30,043 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2910 transitions. Word has length 81 [2020-11-12 03:30:30,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:30,043 INFO L481 AbstractCegarLoop]: Abstraction has 1707 states and 2910 transitions. [2020-11-12 03:30:30,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:30,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2910 transitions. [2020-11-12 03:30:30,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-12 03:30:30,045 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:30,045 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:30,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-11-12 03:30:30,246 INFO L429 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:30,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:30,247 INFO L82 PathProgramCache]: Analyzing trace with hash 234787582, now seen corresponding path program 56 times [2020-11-12 03:30:30,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:30,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505262870] [2020-11-12 03:30:30,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:30,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:30,508 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:30,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505262870] [2020-11-12 03:30:30,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3956466] [2020-11-12 03:30:30,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:30,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:30:30,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:30,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-12 03:30:30,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:30,625 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:30,674 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:30,683 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:30,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:30,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2020-11-12 03:30:30,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044779971] [2020-11-12 03:30:30,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-12 03:30:30,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:30,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-12 03:30:30,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-11-12 03:30:30,689 INFO L87 Difference]: Start difference. First operand 1707 states and 2910 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:31,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:31,577 INFO L93 Difference]: Finished difference Result 2689 states and 4695 transitions. [2020-11-12 03:30:31,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-12 03:30:31,578 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-11-12 03:30:31,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:31,581 INFO L225 Difference]: With dead ends: 2689 [2020-11-12 03:30:31,581 INFO L226 Difference]: Without dead ends: 2419 [2020-11-12 03:30:31,582 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=379, Invalid=1181, Unknown=0, NotChecked=0, Total=1560 [2020-11-12 03:30:31,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2419 states. [2020-11-12 03:30:31,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2419 to 1707. [2020-11-12 03:30:31,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1643 states have (on average 1.7711503347534996) internal successors, (2910), 1706 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:31,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2910 transitions. [2020-11-12 03:30:31,611 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2910 transitions. Word has length 81 [2020-11-12 03:30:31,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:31,612 INFO L481 AbstractCegarLoop]: Abstraction has 1707 states and 2910 transitions. [2020-11-12 03:30:31,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:31,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2910 transitions. [2020-11-12 03:30:31,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-12 03:30:31,614 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:31,615 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:31,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:31,827 INFO L429 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:31,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:31,827 INFO L82 PathProgramCache]: Analyzing trace with hash 533309468, now seen corresponding path program 57 times [2020-11-12 03:30:31,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:31,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544004923] [2020-11-12 03:30:31,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:32,065 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:32,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544004923] [2020-11-12 03:30:32,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957358912] [2020-11-12 03:30:32,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:32,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-11-12 03:30:32,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:32,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-12 03:30:32,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:32,189 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:32,197 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:32,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:32,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2020-11-12 03:30:32,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687058365] [2020-11-12 03:30:32,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-12 03:30:32,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:32,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-12 03:30:32,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-11-12 03:30:32,199 INFO L87 Difference]: Start difference. First operand 1707 states and 2910 transitions. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:32,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:32,959 INFO L93 Difference]: Finished difference Result 2664 states and 4620 transitions. [2020-11-12 03:30:32,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-12 03:30:32,960 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-11-12 03:30:32,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:32,964 INFO L225 Difference]: With dead ends: 2664 [2020-11-12 03:30:32,964 INFO L226 Difference]: Without dead ends: 2394 [2020-11-12 03:30:32,965 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=413, Invalid=1147, Unknown=0, NotChecked=0, Total=1560 [2020-11-12 03:30:32,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2394 states. [2020-11-12 03:30:32,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2394 to 1707. [2020-11-12 03:30:32,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1643 states have (on average 1.7711503347534996) internal successors, (2910), 1706 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:32,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2910 transitions. [2020-11-12 03:30:32,994 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2910 transitions. Word has length 81 [2020-11-12 03:30:32,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:32,994 INFO L481 AbstractCegarLoop]: Abstraction has 1707 states and 2910 transitions. [2020-11-12 03:30:32,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:32,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2910 transitions. [2020-11-12 03:30:32,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-12 03:30:32,997 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:32,997 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:33,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2020-11-12 03:30:33,205 INFO L429 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:33,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:33,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1087989924, now seen corresponding path program 58 times [2020-11-12 03:30:33,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:33,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987777511] [2020-11-12 03:30:33,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:33,473 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:33,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987777511] [2020-11-12 03:30:33,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310004073] [2020-11-12 03:30:33,474 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:33,563 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:30:33,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:33,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-12 03:30:33,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:33,604 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:33,653 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:33,666 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:33,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:33,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2020-11-12 03:30:33,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670548155] [2020-11-12 03:30:33,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-12 03:30:33,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:33,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-12 03:30:33,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2020-11-12 03:30:33,669 INFO L87 Difference]: Start difference. First operand 1707 states and 2910 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:34,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:34,699 INFO L93 Difference]: Finished difference Result 2704 states and 4662 transitions. [2020-11-12 03:30:34,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-12 03:30:34,699 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-11-12 03:30:34,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:34,704 INFO L225 Difference]: With dead ends: 2704 [2020-11-12 03:30:34,704 INFO L226 Difference]: Without dead ends: 2434 [2020-11-12 03:30:34,704 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=440, Invalid=1282, Unknown=0, NotChecked=0, Total=1722 [2020-11-12 03:30:34,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2020-11-12 03:30:34,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 1727. [2020-11-12 03:30:34,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1727 states, 1663 states have (on average 1.7769092002405291) internal successors, (2955), 1726 states have internal predecessors, (2955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:34,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2955 transitions. [2020-11-12 03:30:34,736 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2955 transitions. Word has length 81 [2020-11-12 03:30:34,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:34,736 INFO L481 AbstractCegarLoop]: Abstraction has 1727 states and 2955 transitions. [2020-11-12 03:30:34,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:34,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2955 transitions. [2020-11-12 03:30:34,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-12 03:30:34,739 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:34,740 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:34,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:34,955 INFO L429 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:34,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:34,956 INFO L82 PathProgramCache]: Analyzing trace with hash 46100240, now seen corresponding path program 59 times [2020-11-12 03:30:34,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:34,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149459540] [2020-11-12 03:30:34,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:35,194 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:35,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149459540] [2020-11-12 03:30:35,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162761817] [2020-11-12 03:30:35,195 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:35,304 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-12 03:30:35,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:35,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-12 03:30:35,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:35,377 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:35,397 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:35,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:35,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2020-11-12 03:30:35,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074089868] [2020-11-12 03:30:35,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-12 03:30:35,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:35,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-12 03:30:35,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-11-12 03:30:35,400 INFO L87 Difference]: Start difference. First operand 1727 states and 2955 transitions. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:36,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:36,417 INFO L93 Difference]: Finished difference Result 3766 states and 6074 transitions. [2020-11-12 03:30:36,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-12 03:30:36,418 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-11-12 03:30:36,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:36,425 INFO L225 Difference]: With dead ends: 3766 [2020-11-12 03:30:36,425 INFO L226 Difference]: Without dead ends: 3481 [2020-11-12 03:30:36,426 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=489, Invalid=1233, Unknown=0, NotChecked=0, Total=1722 [2020-11-12 03:30:36,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3481 states. [2020-11-12 03:30:36,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3481 to 1812. [2020-11-12 03:30:36,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1812 states, 1748 states have (on average 1.8037757437070938) internal successors, (3153), 1811 states have internal predecessors, (3153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:36,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 3153 transitions. [2020-11-12 03:30:36,462 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 3153 transitions. Word has length 81 [2020-11-12 03:30:36,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:36,463 INFO L481 AbstractCegarLoop]: Abstraction has 1812 states and 3153 transitions. [2020-11-12 03:30:36,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:36,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 3153 transitions. [2020-11-12 03:30:36,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-12 03:30:36,465 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:36,466 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:36,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2020-11-12 03:30:36,667 INFO L429 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:36,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:36,668 INFO L82 PathProgramCache]: Analyzing trace with hash 886077432, now seen corresponding path program 60 times [2020-11-12 03:30:36,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:36,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685447497] [2020-11-12 03:30:36,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:36,931 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:36,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685447497] [2020-11-12 03:30:36,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692245589] [2020-11-12 03:30:36,932 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:37,024 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-11-12 03:30:37,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:37,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-12 03:30:37,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:37,072 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:37,116 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:37,132 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:37,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:37,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2020-11-12 03:30:37,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632914360] [2020-11-12 03:30:37,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-12 03:30:37,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:37,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-12 03:30:37,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-11-12 03:30:37,135 INFO L87 Difference]: Start difference. First operand 1812 states and 3153 transitions. Second operand has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:38,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:38,463 INFO L93 Difference]: Finished difference Result 3146 states and 5427 transitions. [2020-11-12 03:30:38,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 03:30:38,464 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-11-12 03:30:38,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:38,468 INFO L225 Difference]: With dead ends: 3146 [2020-11-12 03:30:38,469 INFO L226 Difference]: Without dead ends: 2574 [2020-11-12 03:30:38,470 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=554, Invalid=1608, Unknown=0, NotChecked=0, Total=2162 [2020-11-12 03:30:38,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2020-11-12 03:30:38,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 1467. [2020-11-12 03:30:38,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1467 states, 1403 states have (on average 1.720598717034925) internal successors, (2414), 1466 states have internal predecessors, (2414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:38,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1467 states to 1467 states and 2414 transitions. [2020-11-12 03:30:38,497 INFO L78 Accepts]: Start accepts. Automaton has 1467 states and 2414 transitions. Word has length 81 [2020-11-12 03:30:38,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:38,497 INFO L481 AbstractCegarLoop]: Abstraction has 1467 states and 2414 transitions. [2020-11-12 03:30:38,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:38,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1467 states and 2414 transitions. [2020-11-12 03:30:38,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 03:30:38,499 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:38,500 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:38,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2020-11-12 03:30:38,703 INFO L429 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:38,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:38,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1402500962, now seen corresponding path program 61 times [2020-11-12 03:30:38,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:38,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656915299] [2020-11-12 03:30:38,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:39,039 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:39,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656915299] [2020-11-12 03:30:39,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648463164] [2020-11-12 03:30:39,042 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:39,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-12 03:30:39,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:39,181 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:39,218 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:39,235 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:39,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:39,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 21 [2020-11-12 03:30:39,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326190308] [2020-11-12 03:30:39,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-12 03:30:39,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:39,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-12 03:30:39,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2020-11-12 03:30:39,237 INFO L87 Difference]: Start difference. First operand 1467 states and 2414 transitions. Second operand has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:39,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:39,957 INFO L93 Difference]: Finished difference Result 2525 states and 4258 transitions. [2020-11-12 03:30:39,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-12 03:30:39,958 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-11-12 03:30:39,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:39,962 INFO L225 Difference]: With dead ends: 2525 [2020-11-12 03:30:39,962 INFO L226 Difference]: Without dead ends: 2191 [2020-11-12 03:30:39,962 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=386, Invalid=1096, Unknown=0, NotChecked=0, Total=1482 [2020-11-12 03:30:39,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2191 states. [2020-11-12 03:30:39,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2191 to 1542. [2020-11-12 03:30:39,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1542 states, 1478 states have (on average 1.7347767253044655) internal successors, (2564), 1541 states have internal predecessors, (2564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:39,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2564 transitions. [2020-11-12 03:30:39,992 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2564 transitions. Word has length 86 [2020-11-12 03:30:39,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:39,992 INFO L481 AbstractCegarLoop]: Abstraction has 1542 states and 2564 transitions. [2020-11-12 03:30:39,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:39,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2564 transitions. [2020-11-12 03:30:39,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 03:30:39,995 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:39,995 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:40,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:40,196 INFO L429 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:40,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:40,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1220682816, now seen corresponding path program 62 times [2020-11-12 03:30:40,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:40,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184988883] [2020-11-12 03:30:40,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:40,550 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:40,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184988883] [2020-11-12 03:30:40,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137812280] [2020-11-12 03:30:40,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:40,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:30:40,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:40,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-12 03:30:40,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:40,719 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:40,741 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:40,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:40,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-11-12 03:30:40,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183532603] [2020-11-12 03:30:40,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-12 03:30:40,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:40,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-12 03:30:40,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-11-12 03:30:40,744 INFO L87 Difference]: Start difference. First operand 1542 states and 2564 transitions. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:41,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:41,326 INFO L93 Difference]: Finished difference Result 2854 states and 5114 transitions. [2020-11-12 03:30:41,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-12 03:30:41,327 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-11-12 03:30:41,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:41,330 INFO L225 Difference]: With dead ends: 2854 [2020-11-12 03:30:41,330 INFO L226 Difference]: Without dead ends: 2584 [2020-11-12 03:30:41,330 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=282, Invalid=774, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 03:30:41,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2020-11-12 03:30:41,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 1637. [2020-11-12 03:30:41,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1637 states, 1573 states have (on average 1.7317228226319135) internal successors, (2724), 1636 states have internal predecessors, (2724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:41,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 2724 transitions. [2020-11-12 03:30:41,362 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 2724 transitions. Word has length 86 [2020-11-12 03:30:41,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:41,362 INFO L481 AbstractCegarLoop]: Abstraction has 1637 states and 2724 transitions. [2020-11-12 03:30:41,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:41,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 2724 transitions. [2020-11-12 03:30:41,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 03:30:41,365 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:41,365 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:41,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:41,566 INFO L429 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:41,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:41,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1101213248, now seen corresponding path program 63 times [2020-11-12 03:30:41,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:41,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776433487] [2020-11-12 03:30:41,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:41,931 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:41,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776433487] [2020-11-12 03:30:41,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935497670] [2020-11-12 03:30:41,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:42,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-11-12 03:30:42,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:42,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-12 03:30:42,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:42,110 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:42,166 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:42,189 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:42,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:42,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-11-12 03:30:42,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781409704] [2020-11-12 03:30:42,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:30:42,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:42,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:30:42,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:30:42,192 INFO L87 Difference]: Start difference. First operand 1637 states and 2724 transitions. Second operand has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:42,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:42,857 INFO L93 Difference]: Finished difference Result 2809 states and 5004 transitions. [2020-11-12 03:30:42,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-12 03:30:42,858 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-11-12 03:30:42,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:42,863 INFO L225 Difference]: With dead ends: 2809 [2020-11-12 03:30:42,863 INFO L226 Difference]: Without dead ends: 2539 [2020-11-12 03:30:42,864 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=335, Invalid=997, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 03:30:42,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2020-11-12 03:30:42,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 1687. [2020-11-12 03:30:42,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1623 states have (on average 1.7276648182378311) internal successors, (2804), 1686 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:42,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2804 transitions. [2020-11-12 03:30:42,899 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2804 transitions. Word has length 86 [2020-11-12 03:30:42,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:42,899 INFO L481 AbstractCegarLoop]: Abstraction has 1687 states and 2804 transitions. [2020-11-12 03:30:42,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:42,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2804 transitions. [2020-11-12 03:30:42,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 03:30:42,902 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:42,902 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:43,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2020-11-12 03:30:43,103 INFO L429 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:43,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:43,104 INFO L82 PathProgramCache]: Analyzing trace with hash 154504536, now seen corresponding path program 64 times [2020-11-12 03:30:43,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:43,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60488582] [2020-11-12 03:30:43,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:43,408 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:43,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60488582] [2020-11-12 03:30:43,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346612166] [2020-11-12 03:30:43,409 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:43,487 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:30:43,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:43,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-12 03:30:43,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:43,539 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:43,589 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:43,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:43,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-11-12 03:30:43,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725600418] [2020-11-12 03:30:43,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-12 03:30:43,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:43,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-12 03:30:43,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-11-12 03:30:43,592 INFO L87 Difference]: Start difference. First operand 1687 states and 2804 transitions. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:44,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:44,215 INFO L93 Difference]: Finished difference Result 2834 states and 5034 transitions. [2020-11-12 03:30:44,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-12 03:30:44,216 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-11-12 03:30:44,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:44,220 INFO L225 Difference]: With dead ends: 2834 [2020-11-12 03:30:44,220 INFO L226 Difference]: Without dead ends: 2564 [2020-11-12 03:30:44,220 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=294, Invalid=896, Unknown=0, NotChecked=0, Total=1190 [2020-11-12 03:30:44,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2020-11-12 03:30:44,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 1737. [2020-11-12 03:30:44,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1737 states, 1673 states have (on average 1.7238493723849373) internal successors, (2884), 1736 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:44,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1737 states to 1737 states and 2884 transitions. [2020-11-12 03:30:44,256 INFO L78 Accepts]: Start accepts. Automaton has 1737 states and 2884 transitions. Word has length 86 [2020-11-12 03:30:44,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:44,257 INFO L481 AbstractCegarLoop]: Abstraction has 1737 states and 2884 transitions. [2020-11-12 03:30:44,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:44,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1737 states and 2884 transitions. [2020-11-12 03:30:44,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 03:30:44,258 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:44,258 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:44,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:44,459 INFO L429 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:44,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:44,460 INFO L82 PathProgramCache]: Analyzing trace with hash -323466088, now seen corresponding path program 65 times [2020-11-12 03:30:44,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:44,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841131199] [2020-11-12 03:30:44,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:44,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:44,783 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:44,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841131199] [2020-11-12 03:30:44,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241252420] [2020-11-12 03:30:44,784 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:44,876 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-12 03:30:44,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:44,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-12 03:30:44,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:44,916 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:44,969 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:44,985 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:44,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:44,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-11-12 03:30:44,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420547310] [2020-11-12 03:30:44,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:30:44,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:44,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:30:44,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:30:44,987 INFO L87 Difference]: Start difference. First operand 1737 states and 2884 transitions. Second operand has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:45,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:45,803 INFO L93 Difference]: Finished difference Result 2834 states and 5014 transitions. [2020-11-12 03:30:45,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-12 03:30:45,804 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-11-12 03:30:45,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:45,809 INFO L225 Difference]: With dead ends: 2834 [2020-11-12 03:30:45,809 INFO L226 Difference]: Without dead ends: 2564 [2020-11-12 03:30:45,809 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=355, Invalid=1127, Unknown=0, NotChecked=0, Total=1482 [2020-11-12 03:30:45,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2020-11-12 03:30:45,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 1762. [2020-11-12 03:30:45,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1762 states, 1698 states have (on average 1.7308598351001179) internal successors, (2939), 1761 states have internal predecessors, (2939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:45,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 2939 transitions. [2020-11-12 03:30:45,846 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 2939 transitions. Word has length 86 [2020-11-12 03:30:45,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:45,846 INFO L481 AbstractCegarLoop]: Abstraction has 1762 states and 2939 transitions. [2020-11-12 03:30:45,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:45,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 2939 transitions. [2020-11-12 03:30:45,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 03:30:45,849 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:45,849 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:46,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2020-11-12 03:30:46,064 INFO L429 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:46,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:46,065 INFO L82 PathProgramCache]: Analyzing trace with hash 823371446, now seen corresponding path program 66 times [2020-11-12 03:30:46,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:46,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832908632] [2020-11-12 03:30:46,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:46,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:46,392 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:46,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832908632] [2020-11-12 03:30:46,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717785495] [2020-11-12 03:30:46,393 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:46,496 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-11-12 03:30:46,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:46,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-12 03:30:46,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:46,549 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:46,587 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:46,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:46,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-11-12 03:30:46,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894469195] [2020-11-12 03:30:46,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-12 03:30:46,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:46,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-12 03:30:46,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2020-11-12 03:30:46,589 INFO L87 Difference]: Start difference. First operand 1762 states and 2939 transitions. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:47,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:47,302 INFO L93 Difference]: Finished difference Result 2809 states and 4969 transitions. [2020-11-12 03:30:47,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-12 03:30:47,303 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-11-12 03:30:47,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:47,306 INFO L225 Difference]: With dead ends: 2809 [2020-11-12 03:30:47,306 INFO L226 Difference]: Without dead ends: 2539 [2020-11-12 03:30:47,307 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=322, Invalid=1010, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 03:30:47,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2020-11-12 03:30:47,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 1787. [2020-11-12 03:30:47,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1787 states, 1723 states have (on average 1.7376668601276843) internal successors, (2994), 1786 states have internal predecessors, (2994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:47,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1787 states to 1787 states and 2994 transitions. [2020-11-12 03:30:47,333 INFO L78 Accepts]: Start accepts. Automaton has 1787 states and 2994 transitions. Word has length 86 [2020-11-12 03:30:47,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:47,333 INFO L481 AbstractCegarLoop]: Abstraction has 1787 states and 2994 transitions. [2020-11-12 03:30:47,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:47,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1787 states and 2994 transitions. [2020-11-12 03:30:47,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 03:30:47,335 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:47,335 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:47,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:47,537 INFO L429 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:47,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:47,538 INFO L82 PathProgramCache]: Analyzing trace with hash 2111862262, now seen corresponding path program 67 times [2020-11-12 03:30:47,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:47,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871550201] [2020-11-12 03:30:47,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:47,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:47,845 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:47,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871550201] [2020-11-12 03:30:47,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740782348] [2020-11-12 03:30:47,846 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:47,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:47,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-12 03:30:47,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:47,964 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:48,017 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:48,029 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:48,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:48,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-11-12 03:30:48,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067483052] [2020-11-12 03:30:48,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:30:48,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:48,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:30:48,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:30:48,031 INFO L87 Difference]: Start difference. First operand 1787 states and 2994 transitions. Second operand has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:49,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:49,011 INFO L93 Difference]: Finished difference Result 2784 states and 4924 transitions. [2020-11-12 03:30:49,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-12 03:30:49,012 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-11-12 03:30:49,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:49,016 INFO L225 Difference]: With dead ends: 2784 [2020-11-12 03:30:49,016 INFO L226 Difference]: Without dead ends: 2514 [2020-11-12 03:30:49,017 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=391, Invalid=1249, Unknown=0, NotChecked=0, Total=1640 [2020-11-12 03:30:49,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2020-11-12 03:30:49,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 1812. [2020-11-12 03:30:49,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1812 states, 1748 states have (on average 1.744279176201373) internal successors, (3049), 1811 states have internal predecessors, (3049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:49,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 3049 transitions. [2020-11-12 03:30:49,053 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 3049 transitions. Word has length 86 [2020-11-12 03:30:49,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:49,053 INFO L481 AbstractCegarLoop]: Abstraction has 1812 states and 3049 transitions. [2020-11-12 03:30:49,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:49,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 3049 transitions. [2020-11-12 03:30:49,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 03:30:49,056 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:49,056 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:49,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2020-11-12 03:30:49,272 INFO L429 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:49,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:49,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1130511764, now seen corresponding path program 68 times [2020-11-12 03:30:49,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:49,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627794416] [2020-11-12 03:30:49,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:49,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:49,553 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:49,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627794416] [2020-11-12 03:30:49,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292847341] [2020-11-12 03:30:49,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:49,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:30:49,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:49,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-12 03:30:49,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:49,717 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:49,733 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:49,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:49,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-11-12 03:30:49,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577526201] [2020-11-12 03:30:49,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-12 03:30:49,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:49,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-12 03:30:49,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-11-12 03:30:49,736 INFO L87 Difference]: Start difference. First operand 1812 states and 3049 transitions. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:50,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:50,489 INFO L93 Difference]: Finished difference Result 2759 states and 4879 transitions. [2020-11-12 03:30:50,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-12 03:30:50,490 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-11-12 03:30:50,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:50,495 INFO L225 Difference]: With dead ends: 2759 [2020-11-12 03:30:50,495 INFO L226 Difference]: Without dead ends: 2489 [2020-11-12 03:30:50,496 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=366, Invalid=1116, Unknown=0, NotChecked=0, Total=1482 [2020-11-12 03:30:50,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states. [2020-11-12 03:30:50,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 1837. [2020-11-12 03:30:50,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1837 states, 1773 states have (on average 1.7507050197405527) internal successors, (3104), 1836 states have internal predecessors, (3104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:50,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1837 states to 1837 states and 3104 transitions. [2020-11-12 03:30:50,527 INFO L78 Accepts]: Start accepts. Automaton has 1837 states and 3104 transitions. Word has length 86 [2020-11-12 03:30:50,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:50,527 INFO L481 AbstractCegarLoop]: Abstraction has 1837 states and 3104 transitions. [2020-11-12 03:30:50,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:50,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1837 states and 3104 transitions. [2020-11-12 03:30:50,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 03:30:50,529 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:50,529 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:50,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:50,730 INFO L429 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:50,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:50,731 INFO L82 PathProgramCache]: Analyzing trace with hash 466427092, now seen corresponding path program 69 times [2020-11-12 03:30:50,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:50,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752439287] [2020-11-12 03:30:50,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:51,021 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:51,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752439287] [2020-11-12 03:30:51,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836220108] [2020-11-12 03:30:51,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:51,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-11-12 03:30:51,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:51,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-12 03:30:51,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:51,153 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:51,203 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:51,214 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:51,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:51,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-11-12 03:30:51,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345541498] [2020-11-12 03:30:51,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:30:51,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:51,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:30:51,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:30:51,216 INFO L87 Difference]: Start difference. First operand 1837 states and 3104 transitions. Second operand has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:52,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:52,342 INFO L93 Difference]: Finished difference Result 2734 states and 4834 transitions. [2020-11-12 03:30:52,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-12 03:30:52,343 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-11-12 03:30:52,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:52,347 INFO L225 Difference]: With dead ends: 2734 [2020-11-12 03:30:52,347 INFO L226 Difference]: Without dead ends: 2464 [2020-11-12 03:30:52,349 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=443, Invalid=1363, Unknown=0, NotChecked=0, Total=1806 [2020-11-12 03:30:52,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2020-11-12 03:30:52,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 1862. [2020-11-12 03:30:52,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1862 states, 1798 states have (on average 1.756952169076752) internal successors, (3159), 1861 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:52,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 3159 transitions. [2020-11-12 03:30:52,394 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 3159 transitions. Word has length 86 [2020-11-12 03:30:52,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:52,394 INFO L481 AbstractCegarLoop]: Abstraction has 1862 states and 3159 transitions. [2020-11-12 03:30:52,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:52,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 3159 transitions. [2020-11-12 03:30:52,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 03:30:52,397 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:52,397 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:52,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2020-11-12 03:30:52,612 INFO L429 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:52,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:52,612 INFO L82 PathProgramCache]: Analyzing trace with hash 764948978, now seen corresponding path program 70 times [2020-11-12 03:30:52,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:52,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397323448] [2020-11-12 03:30:52,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:52,887 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:52,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397323448] [2020-11-12 03:30:52,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037915468] [2020-11-12 03:30:52,888 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:52,977 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:30:52,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:52,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-12 03:30:52,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:53,040 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:53,055 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:53,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:53,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-11-12 03:30:53,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102556252] [2020-11-12 03:30:53,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-12 03:30:53,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:53,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-12 03:30:53,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-11-12 03:30:53,057 INFO L87 Difference]: Start difference. First operand 1862 states and 3159 transitions. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:53,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:53,927 INFO L93 Difference]: Finished difference Result 2709 states and 4789 transitions. [2020-11-12 03:30:53,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-12 03:30:53,928 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-11-12 03:30:53,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:53,933 INFO L225 Difference]: With dead ends: 2709 [2020-11-12 03:30:53,933 INFO L226 Difference]: Without dead ends: 2439 [2020-11-12 03:30:53,934 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=426, Invalid=1214, Unknown=0, NotChecked=0, Total=1640 [2020-11-12 03:30:53,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2020-11-12 03:30:53,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 1887. [2020-11-12 03:30:53,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1887 states, 1823 states have (on average 1.7630279758639604) internal successors, (3214), 1886 states have internal predecessors, (3214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:53,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 3214 transitions. [2020-11-12 03:30:53,970 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 3214 transitions. Word has length 86 [2020-11-12 03:30:53,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:53,971 INFO L481 AbstractCegarLoop]: Abstraction has 1887 states and 3214 transitions. [2020-11-12 03:30:53,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:53,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 3214 transitions. [2020-11-12 03:30:53,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 03:30:53,973 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:53,974 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:54,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:54,175 INFO L429 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:54,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:54,176 INFO L82 PathProgramCache]: Analyzing trace with hash -856350414, now seen corresponding path program 71 times [2020-11-12 03:30:54,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:54,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358135121] [2020-11-12 03:30:54,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:54,448 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:54,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358135121] [2020-11-12 03:30:54,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047006751] [2020-11-12 03:30:54,449 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:54,534 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-12 03:30:54,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:54,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-12 03:30:54,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:54,571 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:54,616 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:54,626 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:54,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:54,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-11-12 03:30:54,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618337655] [2020-11-12 03:30:54,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:30:54,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:54,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:30:54,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:30:54,628 INFO L87 Difference]: Start difference. First operand 1887 states and 3214 transitions. Second operand has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:55,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:55,943 INFO L93 Difference]: Finished difference Result 3113 states and 5550 transitions. [2020-11-12 03:30:55,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-12 03:30:55,944 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-11-12 03:30:55,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:55,948 INFO L225 Difference]: With dead ends: 3113 [2020-11-12 03:30:55,949 INFO L226 Difference]: Without dead ends: 2604 [2020-11-12 03:30:55,949 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=534, Invalid=1628, Unknown=0, NotChecked=0, Total=2162 [2020-11-12 03:30:55,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2020-11-12 03:30:55,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 1912. [2020-11-12 03:30:55,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1912 states, 1848 states have (on average 1.772186147186147) internal successors, (3275), 1911 states have internal predecessors, (3275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:55,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 3275 transitions. [2020-11-12 03:30:55,981 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 3275 transitions. Word has length 86 [2020-11-12 03:30:55,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:55,981 INFO L481 AbstractCegarLoop]: Abstraction has 1912 states and 3275 transitions. [2020-11-12 03:30:55,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:55,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 3275 transitions. [2020-11-12 03:30:55,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 03:30:55,984 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:55,984 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:56,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:56,187 INFO L429 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:56,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:56,187 INFO L82 PathProgramCache]: Analyzing trace with hash 277739750, now seen corresponding path program 72 times [2020-11-12 03:30:56,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:56,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068413610] [2020-11-12 03:30:56,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:56,456 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:56,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068413610] [2020-11-12 03:30:56,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433341077] [2020-11-12 03:30:56,457 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:56,547 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-11-12 03:30:56,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:30:56,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-12 03:30:56,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:56,604 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:56,613 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:56,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:56,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-11-12 03:30:56,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72638881] [2020-11-12 03:30:56,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-12 03:30:56,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:56,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-12 03:30:56,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-11-12 03:30:56,616 INFO L87 Difference]: Start difference. First operand 1912 states and 3275 transitions. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:57,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:57,598 INFO L93 Difference]: Finished difference Result 3791 states and 6259 transitions. [2020-11-12 03:30:57,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-12 03:30:57,599 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-11-12 03:30:57,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:57,603 INFO L225 Difference]: With dead ends: 3791 [2020-11-12 03:30:57,603 INFO L226 Difference]: Without dead ends: 3506 [2020-11-12 03:30:57,604 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=503, Invalid=1303, Unknown=0, NotChecked=0, Total=1806 [2020-11-12 03:30:57,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3506 states. [2020-11-12 03:30:57,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3506 to 1997. [2020-11-12 03:30:57,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1997 states, 1933 states have (on average 1.7966890843248835) internal successors, (3473), 1996 states have internal predecessors, (3473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:57,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1997 states to 1997 states and 3473 transitions. [2020-11-12 03:30:57,632 INFO L78 Accepts]: Start accepts. Automaton has 1997 states and 3473 transitions. Word has length 86 [2020-11-12 03:30:57,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:57,632 INFO L481 AbstractCegarLoop]: Abstraction has 1997 states and 3473 transitions. [2020-11-12 03:30:57,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:57,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1997 states and 3473 transitions. [2020-11-12 03:30:57,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 03:30:57,634 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:57,635 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:57,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:57,836 INFO L429 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:57,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:57,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1117716942, now seen corresponding path program 73 times [2020-11-12 03:30:57,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:57,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854316367] [2020-11-12 03:30:57,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:58,099 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:58,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854316367] [2020-11-12 03:30:58,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493900388] [2020-11-12 03:30:58,100 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:30:58,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-12 03:30:58,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:30:58,239 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:30:58,260 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:30:58,272 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:30:58,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:30:58,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-11-12 03:30:58,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934152779] [2020-11-12 03:30:58,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-12 03:30:58,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:30:58,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-12 03:30:58,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-11-12 03:30:58,275 INFO L87 Difference]: Start difference. First operand 1997 states and 3473 transitions. Second operand has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:59,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:30:59,605 INFO L93 Difference]: Finished difference Result 2790 states and 4879 transitions. [2020-11-12 03:30:59,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-12 03:30:59,606 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 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 [2020-11-12 03:30:59,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:30:59,611 INFO L225 Difference]: With dead ends: 2790 [2020-11-12 03:30:59,611 INFO L226 Difference]: Without dead ends: 2394 [2020-11-12 03:30:59,612 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=579, Invalid=1491, Unknown=0, NotChecked=0, Total=2070 [2020-11-12 03:30:59,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2394 states. [2020-11-12 03:30:59,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2394 to 1662. [2020-11-12 03:30:59,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1598 states have (on average 1.7234042553191489) internal successors, (2754), 1661 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:59,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2754 transitions. [2020-11-12 03:30:59,641 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2754 transitions. Word has length 86 [2020-11-12 03:30:59,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:30:59,642 INFO L481 AbstractCegarLoop]: Abstraction has 1662 states and 2754 transitions. [2020-11-12 03:30:59,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:30:59,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2754 transitions. [2020-11-12 03:30:59,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-12 03:30:59,644 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:30:59,644 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:30:59,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:30:59,845 INFO L429 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:30:59,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:30:59,846 INFO L82 PathProgramCache]: Analyzing trace with hash -13876813, now seen corresponding path program 74 times [2020-11-12 03:30:59,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:30:59,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746359569] [2020-11-12 03:30:59,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:30:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:00,190 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:00,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746359569] [2020-11-12 03:31:00,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329440043] [2020-11-12 03:31:00,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:00,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:31:00,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:00,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-12 03:31:00,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:00,342 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:00,364 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:00,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:00,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-11-12 03:31:00,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786911316] [2020-11-12 03:31:00,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:31:00,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:00,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:31:00,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:31:00,367 INFO L87 Difference]: Start difference. First operand 1662 states and 2754 transitions. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:01,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:01,010 INFO L93 Difference]: Finished difference Result 2659 states and 4684 transitions. [2020-11-12 03:31:01,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-12 03:31:01,011 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-11-12 03:31:01,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:01,015 INFO L225 Difference]: With dead ends: 2659 [2020-11-12 03:31:01,015 INFO L226 Difference]: Without dead ends: 2389 [2020-11-12 03:31:01,015 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=334, Invalid=998, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 03:31:01,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2020-11-12 03:31:01,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1702. [2020-11-12 03:31:01,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1638 states have (on average 1.7240537240537241) internal successors, (2824), 1701 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:01,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 2824 transitions. [2020-11-12 03:31:01,041 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 2824 transitions. Word has length 91 [2020-11-12 03:31:01,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:01,041 INFO L481 AbstractCegarLoop]: Abstraction has 1702 states and 2824 transitions. [2020-11-12 03:31:01,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:01,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 2824 transitions. [2020-11-12 03:31:01,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-12 03:31:01,044 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:01,044 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:01,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:01,245 INFO L429 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:01,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:01,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1028067085, now seen corresponding path program 75 times [2020-11-12 03:31:01,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:01,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292637752] [2020-11-12 03:31:01,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:01,593 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:01,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292637752] [2020-11-12 03:31:01,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345989982] [2020-11-12 03:31:01,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:01,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-11-12 03:31:01,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:01,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-12 03:31:01,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:01,735 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:31:01,781 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:01,799 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:01,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:01,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2020-11-12 03:31:01,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063979593] [2020-11-12 03:31:01,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 03:31:01,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:01,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 03:31:01,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2020-11-12 03:31:01,803 INFO L87 Difference]: Start difference. First operand 1702 states and 2824 transitions. Second operand has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:02,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:02,541 INFO L93 Difference]: Finished difference Result 2944 states and 5234 transitions. [2020-11-12 03:31:02,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-12 03:31:02,543 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-11-12 03:31:02,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:02,547 INFO L225 Difference]: With dead ends: 2944 [2020-11-12 03:31:02,547 INFO L226 Difference]: Without dead ends: 2674 [2020-11-12 03:31:02,548 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=380, Invalid=1180, Unknown=0, NotChecked=0, Total=1560 [2020-11-12 03:31:02,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2020-11-12 03:31:02,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 1727. [2020-11-12 03:31:02,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1727 states, 1663 states have (on average 1.7312086590499098) internal successors, (2879), 1726 states have internal predecessors, (2879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:02,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2879 transitions. [2020-11-12 03:31:02,582 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2879 transitions. Word has length 91 [2020-11-12 03:31:02,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:02,582 INFO L481 AbstractCegarLoop]: Abstraction has 1727 states and 2879 transitions. [2020-11-12 03:31:02,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:02,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2879 transitions. [2020-11-12 03:31:02,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-12 03:31:02,585 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:02,585 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:02,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:02,788 INFO L429 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:02,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:02,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1794686353, now seen corresponding path program 76 times [2020-11-12 03:31:02,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:02,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358479892] [2020-11-12 03:31:02,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:02,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:03,125 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:03,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358479892] [2020-11-12 03:31:03,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660743122] [2020-11-12 03:31:03,125 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:03,208 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:31:03,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:03,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 03:31:03,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:03,275 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:03,295 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:03,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:03,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-11-12 03:31:03,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285336948] [2020-11-12 03:31:03,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:31:03,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:03,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:31:03,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:31:03,297 INFO L87 Difference]: Start difference. First operand 1727 states and 2879 transitions. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:04,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:04,081 INFO L93 Difference]: Finished difference Result 2959 states and 5244 transitions. [2020-11-12 03:31:04,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-12 03:31:04,083 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-11-12 03:31:04,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:04,087 INFO L225 Difference]: With dead ends: 2959 [2020-11-12 03:31:04,087 INFO L226 Difference]: Without dead ends: 2689 [2020-11-12 03:31:04,088 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=384, Invalid=1176, Unknown=0, NotChecked=0, Total=1560 [2020-11-12 03:31:04,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2020-11-12 03:31:04,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 1752. [2020-11-12 03:31:04,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1752 states, 1688 states have (on average 1.7381516587677726) internal successors, (2934), 1751 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:04,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1752 states to 1752 states and 2934 transitions. [2020-11-12 03:31:04,121 INFO L78 Accepts]: Start accepts. Automaton has 1752 states and 2934 transitions. Word has length 91 [2020-11-12 03:31:04,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:04,122 INFO L481 AbstractCegarLoop]: Abstraction has 1752 states and 2934 transitions. [2020-11-12 03:31:04,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:04,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1752 states and 2934 transitions. [2020-11-12 03:31:04,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-12 03:31:04,124 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:04,124 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:04,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:04,325 INFO L429 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:04,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:04,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1316715729, now seen corresponding path program 77 times [2020-11-12 03:31:04,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:04,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571684743] [2020-11-12 03:31:04,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:04,682 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:04,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571684743] [2020-11-12 03:31:04,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454246874] [2020-11-12 03:31:04,684 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:04,765 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-11-12 03:31:04,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:04,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-12 03:31:04,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:04,792 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:31:04,839 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:04,853 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:04,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:04,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2020-11-12 03:31:04,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989941515] [2020-11-12 03:31:04,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 03:31:04,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:04,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 03:31:04,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2020-11-12 03:31:04,855 INFO L87 Difference]: Start difference. First operand 1752 states and 2934 transitions. Second operand has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:05,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:05,782 INFO L93 Difference]: Finished difference Result 2959 states and 5224 transitions. [2020-11-12 03:31:05,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-12 03:31:05,783 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-11-12 03:31:05,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:05,787 INFO L225 Difference]: With dead ends: 2959 [2020-11-12 03:31:05,787 INFO L226 Difference]: Without dead ends: 2689 [2020-11-12 03:31:05,788 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=407, Invalid=1315, Unknown=0, NotChecked=0, Total=1722 [2020-11-12 03:31:05,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2020-11-12 03:31:05,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 1777. [2020-11-12 03:31:05,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1713 states have (on average 1.7448920023350847) internal successors, (2989), 1776 states have internal predecessors, (2989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:05,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 2989 transitions. [2020-11-12 03:31:05,816 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 2989 transitions. Word has length 91 [2020-11-12 03:31:05,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:05,816 INFO L481 AbstractCegarLoop]: Abstraction has 1777 states and 2989 transitions. [2020-11-12 03:31:05,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:05,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 2989 transitions. [2020-11-12 03:31:05,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-12 03:31:05,818 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:05,818 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:06,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2020-11-12 03:31:06,019 INFO L429 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:06,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:06,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1831414033, now seen corresponding path program 78 times [2020-11-12 03:31:06,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:06,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292257922] [2020-11-12 03:31:06,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:06,312 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:06,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292257922] [2020-11-12 03:31:06,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366973517] [2020-11-12 03:31:06,313 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:06,400 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-11-12 03:31:06,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:06,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-12 03:31:06,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:06,452 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:06,464 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:06,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:06,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-11-12 03:31:06,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55878521] [2020-11-12 03:31:06,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:31:06,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:06,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:31:06,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:31:06,465 INFO L87 Difference]: Start difference. First operand 1777 states and 2989 transitions. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:07,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:07,258 INFO L93 Difference]: Finished difference Result 2959 states and 5204 transitions. [2020-11-12 03:31:07,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-12 03:31:07,259 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-11-12 03:31:07,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:07,263 INFO L225 Difference]: With dead ends: 2959 [2020-11-12 03:31:07,263 INFO L226 Difference]: Without dead ends: 2689 [2020-11-12 03:31:07,263 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=425, Invalid=1297, Unknown=0, NotChecked=0, Total=1722 [2020-11-12 03:31:07,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2020-11-12 03:31:07,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 1802. [2020-11-12 03:31:07,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1802 states, 1738 states have (on average 1.7514384349827388) internal successors, (3044), 1801 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:07,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 3044 transitions. [2020-11-12 03:31:07,286 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 3044 transitions. Word has length 91 [2020-11-12 03:31:07,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:07,286 INFO L481 AbstractCegarLoop]: Abstraction has 1802 states and 3044 transitions. [2020-11-12 03:31:07,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:07,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 3044 transitions. [2020-11-12 03:31:07,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-12 03:31:07,288 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:07,288 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:07,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:07,489 INFO L429 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:07,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:07,490 INFO L82 PathProgramCache]: Analyzing trace with hash -542923217, now seen corresponding path program 79 times [2020-11-12 03:31:07,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:07,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095406670] [2020-11-12 03:31:07,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:07,822 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:07,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095406670] [2020-11-12 03:31:07,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190070350] [2020-11-12 03:31:07,823 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:07,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:07,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-12 03:31:07,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:07,946 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:31:07,996 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:08,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:08,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2020-11-12 03:31:08,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533239779] [2020-11-12 03:31:08,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 03:31:08,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:08,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 03:31:08,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2020-11-12 03:31:08,013 INFO L87 Difference]: Start difference. First operand 1802 states and 3044 transitions. Second operand has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:09,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:09,062 INFO L93 Difference]: Finished difference Result 2959 states and 5184 transitions. [2020-11-12 03:31:09,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-12 03:31:09,063 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-11-12 03:31:09,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:09,067 INFO L225 Difference]: With dead ends: 2959 [2020-11-12 03:31:09,067 INFO L226 Difference]: Without dead ends: 2689 [2020-11-12 03:31:09,068 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=450, Invalid=1442, Unknown=0, NotChecked=0, Total=1892 [2020-11-12 03:31:09,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2020-11-12 03:31:09,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 1827. [2020-11-12 03:31:09,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1827 states, 1763 states have (on average 1.7577992058990357) internal successors, (3099), 1826 states have internal predecessors, (3099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:09,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 3099 transitions. [2020-11-12 03:31:09,096 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 3099 transitions. Word has length 91 [2020-11-12 03:31:09,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:09,096 INFO L481 AbstractCegarLoop]: Abstraction has 1827 states and 3099 transitions. [2020-11-12 03:31:09,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:09,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 3099 transitions. [2020-11-12 03:31:09,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-12 03:31:09,097 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:09,098 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:09,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2020-11-12 03:31:09,298 INFO L429 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:09,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:09,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1524273715, now seen corresponding path program 80 times [2020-11-12 03:31:09,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:09,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924692596] [2020-11-12 03:31:09,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:09,584 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:09,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924692596] [2020-11-12 03:31:09,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238391897] [2020-11-12 03:31:09,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:09,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:31:09,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:09,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-12 03:31:09,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:09,713 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:09,726 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:09,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:09,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-11-12 03:31:09,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026576608] [2020-11-12 03:31:09,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:31:09,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:09,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:31:09,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:31:09,728 INFO L87 Difference]: Start difference. First operand 1827 states and 3099 transitions. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:10,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:10,613 INFO L93 Difference]: Finished difference Result 2959 states and 5164 transitions. [2020-11-12 03:31:10,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-12 03:31:10,615 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-11-12 03:31:10,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:10,620 INFO L225 Difference]: With dead ends: 2959 [2020-11-12 03:31:10,620 INFO L226 Difference]: Without dead ends: 2689 [2020-11-12 03:31:10,621 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=482, Invalid=1410, Unknown=0, NotChecked=0, Total=1892 [2020-11-12 03:31:10,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2020-11-12 03:31:10,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 1852. [2020-11-12 03:31:10,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1788 states have (on average 1.7639821029082774) internal successors, (3154), 1851 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:10,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 3154 transitions. [2020-11-12 03:31:10,652 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 3154 transitions. Word has length 91 [2020-11-12 03:31:10,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:10,652 INFO L481 AbstractCegarLoop]: Abstraction has 1852 states and 3154 transitions. [2020-11-12 03:31:10,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:10,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 3154 transitions. [2020-11-12 03:31:10,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-12 03:31:10,655 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:10,655 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:10,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:10,857 INFO L429 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:10,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:10,857 INFO L82 PathProgramCache]: Analyzing trace with hash 2106608909, now seen corresponding path program 81 times [2020-11-12 03:31:10,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:10,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658136412] [2020-11-12 03:31:10,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:11,169 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:11,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658136412] [2020-11-12 03:31:11,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230722144] [2020-11-12 03:31:11,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:11,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-11-12 03:31:11,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:11,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-12 03:31:11,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:11,325 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:31:11,380 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:11,398 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:11,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:11,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2020-11-12 03:31:11,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053586012] [2020-11-12 03:31:11,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 03:31:11,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:11,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 03:31:11,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2020-11-12 03:31:11,401 INFO L87 Difference]: Start difference. First operand 1852 states and 3154 transitions. Second operand has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:12,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:12,576 INFO L93 Difference]: Finished difference Result 2959 states and 5144 transitions. [2020-11-12 03:31:12,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-12 03:31:12,577 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-11-12 03:31:12,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:12,580 INFO L225 Difference]: With dead ends: 2959 [2020-11-12 03:31:12,581 INFO L226 Difference]: Without dead ends: 2689 [2020-11-12 03:31:12,581 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2020-11-12 03:31:12,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2020-11-12 03:31:12,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 1877. [2020-11-12 03:31:12,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1877 states, 1813 states have (on average 1.7699944842801987) internal successors, (3209), 1876 states have internal predecessors, (3209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:12,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 3209 transitions. [2020-11-12 03:31:12,606 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 3209 transitions. Word has length 91 [2020-11-12 03:31:12,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:12,606 INFO L481 AbstractCegarLoop]: Abstraction has 1877 states and 3209 transitions. [2020-11-12 03:31:12,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:12,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 3209 transitions. [2020-11-12 03:31:12,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-12 03:31:12,608 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:12,608 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:12,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,87 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:12,809 INFO L429 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:12,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:12,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1889836501, now seen corresponding path program 82 times [2020-11-12 03:31:12,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:12,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320934728] [2020-11-12 03:31:12,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:13,114 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:13,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320934728] [2020-11-12 03:31:13,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268715640] [2020-11-12 03:31:13,115 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:13,203 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:31:13,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:13,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 03:31:13,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:13,263 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:13,279 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:13,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:13,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-11-12 03:31:13,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071300543] [2020-11-12 03:31:13,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:31:13,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:13,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:31:13,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:31:13,282 INFO L87 Difference]: Start difference. First operand 1877 states and 3209 transitions. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:14,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:14,288 INFO L93 Difference]: Finished difference Result 2959 states and 5124 transitions. [2020-11-12 03:31:14,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-12 03:31:14,289 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-11-12 03:31:14,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:14,294 INFO L225 Difference]: With dead ends: 2959 [2020-11-12 03:31:14,294 INFO L226 Difference]: Without dead ends: 2689 [2020-11-12 03:31:14,295 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=555, Invalid=1515, Unknown=0, NotChecked=0, Total=2070 [2020-11-12 03:31:14,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2020-11-12 03:31:14,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 1902. [2020-11-12 03:31:14,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1902 states, 1838 states have (on average 1.7758433079434168) internal successors, (3264), 1901 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:14,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 3264 transitions. [2020-11-12 03:31:14,332 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 3264 transitions. Word has length 91 [2020-11-12 03:31:14,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:14,332 INFO L481 AbstractCegarLoop]: Abstraction has 1902 states and 3264 transitions. [2020-11-12 03:31:14,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:14,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 3264 transitions. [2020-11-12 03:31:14,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-12 03:31:14,334 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:14,334 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:14,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:14,535 INFO L429 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:14,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:14,536 INFO L82 PathProgramCache]: Analyzing trace with hash 783831403, now seen corresponding path program 83 times [2020-11-12 03:31:14,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:14,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448569135] [2020-11-12 03:31:14,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:14,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:14,873 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:14,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448569135] [2020-11-12 03:31:14,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793796763] [2020-11-12 03:31:14,874 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:14,974 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-11-12 03:31:14,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:14,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-12 03:31:14,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:15,016 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:31:15,069 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:15,080 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:15,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:15,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2020-11-12 03:31:15,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35522551] [2020-11-12 03:31:15,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 03:31:15,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:15,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 03:31:15,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2020-11-12 03:31:15,083 INFO L87 Difference]: Start difference. First operand 1902 states and 3264 transitions. Second operand has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:16,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:16,361 INFO L93 Difference]: Finished difference Result 3004 states and 5182 transitions. [2020-11-12 03:31:16,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-12 03:31:16,362 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-11-12 03:31:16,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:16,366 INFO L225 Difference]: With dead ends: 3004 [2020-11-12 03:31:16,367 INFO L226 Difference]: Without dead ends: 2734 [2020-11-12 03:31:16,367 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=584, Invalid=1672, Unknown=0, NotChecked=0, Total=2256 [2020-11-12 03:31:16,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2734 states. [2020-11-12 03:31:16,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2734 to 1927. [2020-11-12 03:31:16,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1927 states, 1863 states have (on average 1.7847557702630166) internal successors, (3325), 1926 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:16,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1927 states to 1927 states and 3325 transitions. [2020-11-12 03:31:16,396 INFO L78 Accepts]: Start accepts. Automaton has 1927 states and 3325 transitions. Word has length 91 [2020-11-12 03:31:16,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:16,396 INFO L481 AbstractCegarLoop]: Abstraction has 1927 states and 3325 transitions. [2020-11-12 03:31:16,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:16,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1927 states and 3325 transitions. [2020-11-12 03:31:16,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-12 03:31:16,399 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:16,399 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:16,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:16,600 INFO L429 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:16,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:16,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1917921567, now seen corresponding path program 84 times [2020-11-12 03:31:16,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:16,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137060952] [2020-11-12 03:31:16,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:16,866 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:16,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137060952] [2020-11-12 03:31:16,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981539816] [2020-11-12 03:31:16,866 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:16,955 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-11-12 03:31:16,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:16,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-12 03:31:16,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:17,005 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:17,014 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:17,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:17,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-11-12 03:31:17,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109779161] [2020-11-12 03:31:17,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:31:17,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:17,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:31:17,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:31:17,016 INFO L87 Difference]: Start difference. First operand 1927 states and 3325 transitions. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:18,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:18,088 INFO L93 Difference]: Finished difference Result 4066 states and 6594 transitions. [2020-11-12 03:31:18,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 03:31:18,090 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-11-12 03:31:18,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:18,097 INFO L225 Difference]: With dead ends: 4066 [2020-11-12 03:31:18,097 INFO L226 Difference]: Without dead ends: 3781 [2020-11-12 03:31:18,098 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=645, Invalid=1611, Unknown=0, NotChecked=0, Total=2256 [2020-11-12 03:31:18,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3781 states. [2020-11-12 03:31:18,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3781 to 2012. [2020-11-12 03:31:18,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2012 states, 1948 states have (on average 1.8085215605749487) internal successors, (3523), 2011 states have internal predecessors, (3523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:18,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2012 states to 2012 states and 3523 transitions. [2020-11-12 03:31:18,136 INFO L78 Accepts]: Start accepts. Automaton has 2012 states and 3523 transitions. Word has length 91 [2020-11-12 03:31:18,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:18,136 INFO L481 AbstractCegarLoop]: Abstraction has 2012 states and 3523 transitions. [2020-11-12 03:31:18,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:18,136 INFO L276 IsEmpty]: Start isEmpty. Operand 2012 states and 3523 transitions. [2020-11-12 03:31:18,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-12 03:31:18,139 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:18,139 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:18,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:18,340 INFO L429 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:18,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:18,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1537068537, now seen corresponding path program 85 times [2020-11-12 03:31:18,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:18,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429382555] [2020-11-12 03:31:18,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:18,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:18,621 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:18,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429382555] [2020-11-12 03:31:18,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130488540] [2020-11-12 03:31:18,621 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 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:18,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-12 03:31:18,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:18,739 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:31:18,773 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:18,783 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:18,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:18,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2020-11-12 03:31:18,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446692655] [2020-11-12 03:31:18,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 03:31:18,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:18,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 03:31:18,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-11-12 03:31:18,785 INFO L87 Difference]: Start difference. First operand 2012 states and 3523 transitions. 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) [2020-11-12 03:31:20,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:20,213 INFO L93 Difference]: Finished difference Result 3446 states and 5947 transitions. [2020-11-12 03:31:20,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 03:31:20,214 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 [2020-11-12 03:31:20,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:20,218 INFO L225 Difference]: With dead ends: 3446 [2020-11-12 03:31:20,218 INFO L226 Difference]: Without dead ends: 2874 [2020-11-12 03:31:20,218 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=714, Invalid=2042, Unknown=0, NotChecked=0, Total=2756 [2020-11-12 03:31:20,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2874 states. [2020-11-12 03:31:20,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2874 to 1907. [2020-11-12 03:31:20,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1907 states, 1843 states have (on average 1.7986977753662508) internal successors, (3315), 1906 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:20,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 3315 transitions. [2020-11-12 03:31:20,250 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 3315 transitions. Word has length 91 [2020-11-12 03:31:20,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:20,250 INFO L481 AbstractCegarLoop]: Abstraction has 1907 states and 3315 transitions. [2020-11-12 03:31:20,250 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) [2020-11-12 03:31:20,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 3315 transitions. [2020-11-12 03:31:20,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 03:31:20,253 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:20,253 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:20,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:20,454 INFO L429 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:20,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:20,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1978788913, now seen corresponding path program 86 times [2020-11-12 03:31:20,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:20,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521288980] [2020-11-12 03:31:20,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:20,821 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:20,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521288980] [2020-11-12 03:31:20,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738027689] [2020-11-12 03:31:20,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:20,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:31:20,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:20,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 03:31:20,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:20,962 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:20,972 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:20,989 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:20,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:20,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-11-12 03:31:20,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470472509] [2020-11-12 03:31:20,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:31:20,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:20,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:31:20,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:31:20,991 INFO L87 Difference]: Start difference. First operand 1907 states and 3315 transitions. Second operand has 22 states, 22 states have (on average 5.318181818181818) internal successors, (117), 22 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:21,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:21,791 INFO L93 Difference]: Finished difference Result 3015 states and 5259 transitions. [2020-11-12 03:31:21,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-12 03:31:21,791 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.318181818181818) internal successors, (117), 22 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 03:31:21,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:21,796 INFO L225 Difference]: With dead ends: 3015 [2020-11-12 03:31:21,796 INFO L226 Difference]: Without dead ends: 2681 [2020-11-12 03:31:21,796 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=445, Invalid=1277, Unknown=0, NotChecked=0, Total=1722 [2020-11-12 03:31:21,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2020-11-12 03:31:21,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 1982. [2020-11-12 03:31:21,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1982 states, 1918 states have (on average 1.8065693430656935) internal successors, (3465), 1981 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:21,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1982 states to 1982 states and 3465 transitions. [2020-11-12 03:31:21,842 INFO L78 Accepts]: Start accepts. Automaton has 1982 states and 3465 transitions. Word has length 96 [2020-11-12 03:31:21,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:21,842 INFO L481 AbstractCegarLoop]: Abstraction has 1982 states and 3465 transitions. [2020-11-12 03:31:21,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.318181818181818) internal successors, (117), 22 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:21,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1982 states and 3465 transitions. [2020-11-12 03:31:21,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 03:31:21,846 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:21,846 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:22,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2020-11-12 03:31:22,060 INFO L429 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:22,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:22,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1361310479, now seen corresponding path program 87 times [2020-11-12 03:31:22,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:22,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282999054] [2020-11-12 03:31:22,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:22,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:22,514 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:22,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282999054] [2020-11-12 03:31:22,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981970908] [2020-11-12 03:31:22,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:22,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-11-12 03:31:22,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:22,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-12 03:31:22,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:22,650 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:22,677 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:22,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:22,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-11-12 03:31:22,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29806789] [2020-11-12 03:31:22,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:31:22,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:22,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:31:22,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:31:22,680 INFO L87 Difference]: Start difference. First operand 1982 states and 3465 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:23,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:23,309 INFO L93 Difference]: Finished difference Result 3409 states and 6240 transitions. [2020-11-12 03:31:23,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-12 03:31:23,309 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 03:31:23,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:23,316 INFO L225 Difference]: With dead ends: 3409 [2020-11-12 03:31:23,316 INFO L226 Difference]: Without dead ends: 3139 [2020-11-12 03:31:23,317 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=334, Invalid=926, Unknown=0, NotChecked=0, Total=1260 [2020-11-12 03:31:23,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2020-11-12 03:31:23,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 2042. [2020-11-12 03:31:23,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2042 states, 1978 states have (on average 1.79474216380182) internal successors, (3550), 2041 states have internal predecessors, (3550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:23,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2042 states to 2042 states and 3550 transitions. [2020-11-12 03:31:23,353 INFO L78 Accepts]: Start accepts. Automaton has 2042 states and 3550 transitions. Word has length 96 [2020-11-12 03:31:23,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:23,353 INFO L481 AbstractCegarLoop]: Abstraction has 2042 states and 3550 transitions. [2020-11-12 03:31:23,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:23,353 INFO L276 IsEmpty]: Start isEmpty. Operand 2042 states and 3550 transitions. [2020-11-12 03:31:23,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 03:31:23,355 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:23,356 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:23,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:23,557 INFO L429 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:23,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:23,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1796987505, now seen corresponding path program 88 times [2020-11-12 03:31:23,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:23,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496554798] [2020-11-12 03:31:23,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:23,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:23,941 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:23,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496554798] [2020-11-12 03:31:23,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743996166] [2020-11-12 03:31:23,941 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:24,027 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:31:24,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:24,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 03:31:24,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:24,071 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:31:24,091 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:24,111 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:24,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:24,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-11-12 03:31:24,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513897170] [2020-11-12 03:31:24,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 03:31:24,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:24,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 03:31:24,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2020-11-12 03:31:24,113 INFO L87 Difference]: Start difference. First operand 2042 states and 3550 transitions. Second operand has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:24,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:24,997 INFO L93 Difference]: Finished difference Result 3339 states and 6075 transitions. [2020-11-12 03:31:24,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-12 03:31:24,998 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 03:31:24,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:25,003 INFO L225 Difference]: With dead ends: 3339 [2020-11-12 03:31:25,003 INFO L226 Difference]: Without dead ends: 3069 [2020-11-12 03:31:25,003 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=389, Invalid=1171, Unknown=0, NotChecked=0, Total=1560 [2020-11-12 03:31:25,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3069 states. [2020-11-12 03:31:25,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3069 to 2067. [2020-11-12 03:31:25,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2067 states, 2003 states have (on average 1.7848227658512232) internal successors, (3575), 2066 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:25,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2067 states to 2067 states and 3575 transitions. [2020-11-12 03:31:25,041 INFO L78 Accepts]: Start accepts. Automaton has 2067 states and 3575 transitions. Word has length 96 [2020-11-12 03:31:25,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:25,041 INFO L481 AbstractCegarLoop]: Abstraction has 2067 states and 3575 transitions. [2020-11-12 03:31:25,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:25,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states and 3575 transitions. [2020-11-12 03:31:25,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 03:31:25,044 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:25,044 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:25,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-11-12 03:31:25,245 INFO L429 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:25,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:25,246 INFO L82 PathProgramCache]: Analyzing trace with hash 2119235593, now seen corresponding path program 89 times [2020-11-12 03:31:25,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:25,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750829772] [2020-11-12 03:31:25,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:25,598 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:25,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750829772] [2020-11-12 03:31:25,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249456248] [2020-11-12 03:31:25,598 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:25,685 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-11-12 03:31:25,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:25,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-12 03:31:25,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:25,705 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:25,720 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:25,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:25,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-11-12 03:31:25,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168924555] [2020-11-12 03:31:25,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:31:25,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:25,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:31:25,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:31:25,722 INFO L87 Difference]: Start difference. First operand 2067 states and 3575 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:26,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:26,408 INFO L93 Difference]: Finished difference Result 3339 states and 6050 transitions. [2020-11-12 03:31:26,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-12 03:31:26,409 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 03:31:26,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:26,412 INFO L225 Difference]: With dead ends: 3339 [2020-11-12 03:31:26,413 INFO L226 Difference]: Without dead ends: 3069 [2020-11-12 03:31:26,413 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=345, Invalid=1061, Unknown=0, NotChecked=0, Total=1406 [2020-11-12 03:31:26,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3069 states. [2020-11-12 03:31:26,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3069 to 2092. [2020-11-12 03:31:26,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 2028 states have (on average 1.7751479289940828) internal successors, (3600), 2091 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:26,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 3600 transitions. [2020-11-12 03:31:26,445 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 3600 transitions. Word has length 96 [2020-11-12 03:31:26,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:26,445 INFO L481 AbstractCegarLoop]: Abstraction has 2092 states and 3600 transitions. [2020-11-12 03:31:26,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:26,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 3600 transitions. [2020-11-12 03:31:26,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 03:31:26,448 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:26,448 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:26,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:26,649 INFO L429 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:26,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:26,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1105045321, now seen corresponding path program 90 times [2020-11-12 03:31:26,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:26,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220800506] [2020-11-12 03:31:26,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:27,010 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:27,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220800506] [2020-11-12 03:31:27,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270411554] [2020-11-12 03:31:27,011 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:27,099 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-11-12 03:31:27,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:27,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-12 03:31:27,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:27,133 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:31:27,155 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:27,169 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:27,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:27,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-11-12 03:31:27,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805238859] [2020-11-12 03:31:27,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 03:31:27,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:27,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 03:31:27,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2020-11-12 03:31:27,172 INFO L87 Difference]: Start difference. First operand 2092 states and 3600 transitions. Second operand has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:28,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:28,139 INFO L93 Difference]: Finished difference Result 3314 states and 5975 transitions. [2020-11-12 03:31:28,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-12 03:31:28,140 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 03:31:28,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:28,144 INFO L225 Difference]: With dead ends: 3314 [2020-11-12 03:31:28,145 INFO L226 Difference]: Without dead ends: 3044 [2020-11-12 03:31:28,145 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=408, Invalid=1314, Unknown=0, NotChecked=0, Total=1722 [2020-11-12 03:31:28,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3044 states. [2020-11-12 03:31:28,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3044 to 2092. [2020-11-12 03:31:28,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 2028 states have (on average 1.7751479289940828) internal successors, (3600), 2091 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:28,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 3600 transitions. [2020-11-12 03:31:28,185 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 3600 transitions. Word has length 96 [2020-11-12 03:31:28,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:28,185 INFO L481 AbstractCegarLoop]: Abstraction has 2092 states and 3600 transitions. [2020-11-12 03:31:28,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:28,186 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 3600 transitions. [2020-11-12 03:31:28,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 03:31:28,188 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:28,189 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:28,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-11-12 03:31:28,404 INFO L429 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:28,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:28,404 INFO L82 PathProgramCache]: Analyzing trace with hash -367168537, now seen corresponding path program 91 times [2020-11-12 03:31:28,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:28,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923733794] [2020-11-12 03:31:28,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:28,775 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:28,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923733794] [2020-11-12 03:31:28,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057908798] [2020-11-12 03:31:28,776 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:28,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-12 03:31:28,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:28,884 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:28,897 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:28,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:28,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-11-12 03:31:28,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671316329] [2020-11-12 03:31:28,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:31:28,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:28,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:31:28,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:31:28,899 INFO L87 Difference]: Start difference. First operand 2092 states and 3600 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:29,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:29,721 INFO L93 Difference]: Finished difference Result 3264 states and 5875 transitions. [2020-11-12 03:31:29,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-12 03:31:29,722 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 03:31:29,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:29,727 INFO L225 Difference]: With dead ends: 3264 [2020-11-12 03:31:29,727 INFO L226 Difference]: Without dead ends: 2994 [2020-11-12 03:31:29,728 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=372, Invalid=1188, Unknown=0, NotChecked=0, Total=1560 [2020-11-12 03:31:29,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2020-11-12 03:31:29,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 2092. [2020-11-12 03:31:29,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 2028 states have (on average 1.7751479289940828) internal successors, (3600), 2091 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:29,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 3600 transitions. [2020-11-12 03:31:29,761 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 3600 transitions. Word has length 96 [2020-11-12 03:31:29,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:29,761 INFO L481 AbstractCegarLoop]: Abstraction has 2092 states and 3600 transitions. [2020-11-12 03:31:29,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:29,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 3600 transitions. [2020-11-12 03:31:29,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 03:31:29,765 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:29,766 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:29,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-11-12 03:31:29,980 INFO L429 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:29,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:29,981 INFO L82 PathProgramCache]: Analyzing trace with hash -845139161, now seen corresponding path program 92 times [2020-11-12 03:31:29,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:29,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130732509] [2020-11-12 03:31:29,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:30,356 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:30,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130732509] [2020-11-12 03:31:30,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835082588] [2020-11-12 03:31:30,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:30,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:31:30,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:30,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-12 03:31:30,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:30,479 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:31:30,500 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:30,523 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:30,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:30,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-11-12 03:31:30,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345809685] [2020-11-12 03:31:30,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 03:31:30,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:30,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 03:31:30,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2020-11-12 03:31:30,525 INFO L87 Difference]: Start difference. First operand 2092 states and 3600 transitions. Second operand has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:31,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:31,592 INFO L93 Difference]: Finished difference Result 3214 states and 5775 transitions. [2020-11-12 03:31:31,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-12 03:31:31,593 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 03:31:31,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:31,597 INFO L225 Difference]: With dead ends: 3214 [2020-11-12 03:31:31,597 INFO L226 Difference]: Without dead ends: 2944 [2020-11-12 03:31:31,598 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=443, Invalid=1449, Unknown=0, NotChecked=0, Total=1892 [2020-11-12 03:31:31,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-11-12 03:31:31,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 2092. [2020-11-12 03:31:31,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 2028 states have (on average 1.7751479289940828) internal successors, (3600), 2091 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:31,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 3600 transitions. [2020-11-12 03:31:31,627 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 3600 transitions. Word has length 96 [2020-11-12 03:31:31,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:31,627 INFO L481 AbstractCegarLoop]: Abstraction has 2092 states and 3600 transitions. [2020-11-12 03:31:31,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:31,627 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 3600 transitions. [2020-11-12 03:31:31,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 03:31:31,629 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:31,629 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:31,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-11-12 03:31:31,831 INFO L429 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:31,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:31,832 INFO L82 PathProgramCache]: Analyzing trace with hash 301698373, now seen corresponding path program 93 times [2020-11-12 03:31:31,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:31,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099239540] [2020-11-12 03:31:31,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:32,136 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:32,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099239540] [2020-11-12 03:31:32,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126949782] [2020-11-12 03:31:32,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:32,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-11-12 03:31:32,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:32,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-12 03:31:32,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:32,259 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:32,276 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:32,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:32,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-11-12 03:31:32,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420172398] [2020-11-12 03:31:32,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:31:32,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:32,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:31:32,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:31:32,278 INFO L87 Difference]: Start difference. First operand 2092 states and 3600 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:33,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:33,195 INFO L93 Difference]: Finished difference Result 3164 states and 5675 transitions. [2020-11-12 03:31:33,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-12 03:31:33,196 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 03:31:33,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:33,200 INFO L225 Difference]: With dead ends: 3164 [2020-11-12 03:31:33,200 INFO L226 Difference]: Without dead ends: 2894 [2020-11-12 03:31:33,200 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=415, Invalid=1307, Unknown=0, NotChecked=0, Total=1722 [2020-11-12 03:31:33,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2020-11-12 03:31:33,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 2092. [2020-11-12 03:31:33,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 2028 states have (on average 1.7751479289940828) internal successors, (3600), 2091 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:33,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 3600 transitions. [2020-11-12 03:31:33,231 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 3600 transitions. Word has length 96 [2020-11-12 03:31:33,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:33,231 INFO L481 AbstractCegarLoop]: Abstraction has 2092 states and 3600 transitions. [2020-11-12 03:31:33,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:33,231 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 3600 transitions. [2020-11-12 03:31:33,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 03:31:33,234 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:33,234 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:33,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:33,435 INFO L429 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:33,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:33,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1590189189, now seen corresponding path program 94 times [2020-11-12 03:31:33,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:33,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022064062] [2020-11-12 03:31:33,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:33,772 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:33,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022064062] [2020-11-12 03:31:33,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804962075] [2020-11-12 03:31:33,773 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 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:33,856 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:31:33,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:33,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 03:31:33,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:33,891 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:31:33,911 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:33,928 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:33,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:33,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-11-12 03:31:33,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574029911] [2020-11-12 03:31:33,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 03:31:33,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:33,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 03:31:33,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2020-11-12 03:31:33,930 INFO L87 Difference]: Start difference. First operand 2092 states and 3600 transitions. Second operand has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:35,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:35,114 INFO L93 Difference]: Finished difference Result 3114 states and 5575 transitions. [2020-11-12 03:31:35,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-12 03:31:35,115 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 03:31:35,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:35,121 INFO L225 Difference]: With dead ends: 3114 [2020-11-12 03:31:35,122 INFO L226 Difference]: Without dead ends: 2844 [2020-11-12 03:31:35,123 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2020-11-12 03:31:35,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2844 states. [2020-11-12 03:31:35,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2844 to 2092. [2020-11-12 03:31:35,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 2028 states have (on average 1.7751479289940828) internal successors, (3600), 2091 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:35,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 3600 transitions. [2020-11-12 03:31:35,176 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 3600 transitions. Word has length 96 [2020-11-12 03:31:35,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:35,176 INFO L481 AbstractCegarLoop]: Abstraction has 2092 states and 3600 transitions. [2020-11-12 03:31:35,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:35,176 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 3600 transitions. [2020-11-12 03:31:35,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 03:31:35,180 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:35,180 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:35,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2020-11-12 03:31:35,394 INFO L429 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:35,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:35,394 INFO L82 PathProgramCache]: Analyzing trace with hash 608838691, now seen corresponding path program 95 times [2020-11-12 03:31:35,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:35,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579563453] [2020-11-12 03:31:35,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:35,709 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:35,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579563453] [2020-11-12 03:31:35,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130876321] [2020-11-12 03:31:35,710 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:35,795 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-11-12 03:31:35,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:35,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-12 03:31:35,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:35,828 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:35,861 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:35,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:35,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-11-12 03:31:35,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879221125] [2020-11-12 03:31:35,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:31:35,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:35,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:31:35,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:31:35,862 INFO L87 Difference]: Start difference. First operand 2092 states and 3600 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:36,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:36,793 INFO L93 Difference]: Finished difference Result 3064 states and 5475 transitions. [2020-11-12 03:31:36,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-12 03:31:36,793 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 03:31:36,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:36,797 INFO L225 Difference]: With dead ends: 3064 [2020-11-12 03:31:36,798 INFO L226 Difference]: Without dead ends: 2794 [2020-11-12 03:31:36,798 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=474, Invalid=1418, Unknown=0, NotChecked=0, Total=1892 [2020-11-12 03:31:36,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2794 states. [2020-11-12 03:31:36,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2794 to 2092. [2020-11-12 03:31:36,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 2028 states have (on average 1.7751479289940828) internal successors, (3600), 2091 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:36,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 3600 transitions. [2020-11-12 03:31:36,826 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 3600 transitions. Word has length 96 [2020-11-12 03:31:36,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:36,827 INFO L481 AbstractCegarLoop]: Abstraction has 2092 states and 3600 transitions. [2020-11-12 03:31:36,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:36,827 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 3600 transitions. [2020-11-12 03:31:36,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 03:31:36,828 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:36,829 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:37,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,101 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:37,029 INFO L429 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:37,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:37,030 INFO L82 PathProgramCache]: Analyzing trace with hash -55245981, now seen corresponding path program 96 times [2020-11-12 03:31:37,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:37,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449383401] [2020-11-12 03:31:37,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:37,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:37,338 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:37,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449383401] [2020-11-12 03:31:37,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944129765] [2020-11-12 03:31:37,338 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:37,430 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-11-12 03:31:37,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:37,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-12 03:31:37,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:37,472 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:31:37,491 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:37,502 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:37,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:37,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-11-12 03:31:37,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763163768] [2020-11-12 03:31:37,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 03:31:37,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:37,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 03:31:37,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-11-12 03:31:37,503 INFO L87 Difference]: Start difference. First operand 2092 states and 3600 transitions. Second operand has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:38,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:38,917 INFO L93 Difference]: Finished difference Result 3014 states and 5375 transitions. [2020-11-12 03:31:38,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-12 03:31:38,918 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 03:31:38,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:38,923 INFO L225 Difference]: With dead ends: 3014 [2020-11-12 03:31:38,923 INFO L226 Difference]: Without dead ends: 2744 [2020-11-12 03:31:38,924 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=561, Invalid=1695, Unknown=0, NotChecked=0, Total=2256 [2020-11-12 03:31:38,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2744 states. [2020-11-12 03:31:38,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2744 to 2092. [2020-11-12 03:31:38,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 2028 states have (on average 1.7751479289940828) internal successors, (3600), 2091 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:38,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 3600 transitions. [2020-11-12 03:31:38,979 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 3600 transitions. Word has length 96 [2020-11-12 03:31:38,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:38,979 INFO L481 AbstractCegarLoop]: Abstraction has 2092 states and 3600 transitions. [2020-11-12 03:31:38,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:38,979 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 3600 transitions. [2020-11-12 03:31:38,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 03:31:38,982 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:38,983 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:39,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2020-11-12 03:31:39,184 INFO L429 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:39,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:39,185 INFO L82 PathProgramCache]: Analyzing trace with hash 243275905, now seen corresponding path program 97 times [2020-11-12 03:31:39,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:39,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392879076] [2020-11-12 03:31:39,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:39,536 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:39,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392879076] [2020-11-12 03:31:39,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289410766] [2020-11-12 03:31:39,537 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:39,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:39,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-12 03:31:39,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:39,646 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:39,665 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:39,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:39,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-11-12 03:31:39,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165954361] [2020-11-12 03:31:39,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:31:39,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:39,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:31:39,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:31:39,667 INFO L87 Difference]: Start difference. First operand 2092 states and 3600 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:40,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:40,728 INFO L93 Difference]: Finished difference Result 2964 states and 5275 transitions. [2020-11-12 03:31:40,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-12 03:31:40,729 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 03:31:40,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:40,733 INFO L225 Difference]: With dead ends: 2964 [2020-11-12 03:31:40,733 INFO L226 Difference]: Without dead ends: 2694 [2020-11-12 03:31:40,734 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=549, Invalid=1521, Unknown=0, NotChecked=0, Total=2070 [2020-11-12 03:31:40,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2020-11-12 03:31:40,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 2092. [2020-11-12 03:31:40,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 2028 states have (on average 1.7751479289940828) internal successors, (3600), 2091 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:40,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 3600 transitions. [2020-11-12 03:31:40,763 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 3600 transitions. Word has length 96 [2020-11-12 03:31:40,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:40,764 INFO L481 AbstractCegarLoop]: Abstraction has 2092 states and 3600 transitions. [2020-11-12 03:31:40,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:40,764 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 3600 transitions. [2020-11-12 03:31:40,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 03:31:40,766 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:40,766 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:40,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:40,967 INFO L429 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:40,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:40,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1378023487, now seen corresponding path program 98 times [2020-11-12 03:31:40,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:40,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334422996] [2020-11-12 03:31:40,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:40,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:41,274 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:41,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334422996] [2020-11-12 03:31:41,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866566839] [2020-11-12 03:31:41,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:41,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:31:41,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:41,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-12 03:31:41,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:41,396 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:31:41,417 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:41,434 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:41,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:41,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-11-12 03:31:41,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487657680] [2020-11-12 03:31:41,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 03:31:41,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:41,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 03:31:41,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2020-11-12 03:31:41,437 INFO L87 Difference]: Start difference. First operand 2092 states and 3600 transitions. Second operand has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:42,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:42,865 INFO L93 Difference]: Finished difference Result 2979 states and 5292 transitions. [2020-11-12 03:31:42,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-12 03:31:42,865 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 03:31:42,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:42,869 INFO L225 Difference]: With dead ends: 2979 [2020-11-12 03:31:42,870 INFO L226 Difference]: Without dead ends: 2709 [2020-11-12 03:31:42,870 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=644, Invalid=1806, Unknown=0, NotChecked=0, Total=2450 [2020-11-12 03:31:42,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2709 states. [2020-11-12 03:31:42,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2709 to 2112. [2020-11-12 03:31:42,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 2048 states have (on average 1.77978515625) internal successors, (3645), 2111 states have internal predecessors, (3645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:42,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 3645 transitions. [2020-11-12 03:31:42,899 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 3645 transitions. Word has length 96 [2020-11-12 03:31:42,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:42,899 INFO L481 AbstractCegarLoop]: Abstraction has 2112 states and 3645 transitions. [2020-11-12 03:31:42,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:42,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 3645 transitions. [2020-11-12 03:31:42,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 03:31:42,901 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:42,902 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:43,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,104 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:43,103 INFO L429 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:43,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:43,103 INFO L82 PathProgramCache]: Analyzing trace with hash -243933323, now seen corresponding path program 99 times [2020-11-12 03:31:43,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:43,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070363842] [2020-11-12 03:31:43,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:43,389 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:43,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070363842] [2020-11-12 03:31:43,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991194148] [2020-11-12 03:31:43,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:43,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-11-12 03:31:43,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:43,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-12 03:31:43,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:43,511 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:43,524 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:43,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:43,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-11-12 03:31:43,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641666869] [2020-11-12 03:31:43,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 03:31:43,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:43,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 03:31:43,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-11-12 03:31:43,526 INFO L87 Difference]: Start difference. First operand 2112 states and 3645 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:44,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:44,661 INFO L93 Difference]: Finished difference Result 4041 states and 6729 transitions. [2020-11-12 03:31:44,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 03:31:44,663 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 03:31:44,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:44,667 INFO L225 Difference]: With dead ends: 4041 [2020-11-12 03:31:44,668 INFO L226 Difference]: Without dead ends: 3756 [2020-11-12 03:31:44,668 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=641, Invalid=1615, Unknown=0, NotChecked=0, Total=2256 [2020-11-12 03:31:44,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3756 states. [2020-11-12 03:31:44,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3756 to 2197. [2020-11-12 03:31:44,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2197 states, 2133 states have (on average 1.8016877637130801) internal successors, (3843), 2196 states have internal predecessors, (3843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:44,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2197 states to 2197 states and 3843 transitions. [2020-11-12 03:31:44,709 INFO L78 Accepts]: Start accepts. Automaton has 2197 states and 3843 transitions. Word has length 96 [2020-11-12 03:31:44,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:44,709 INFO L481 AbstractCegarLoop]: Abstraction has 2197 states and 3843 transitions. [2020-11-12 03:31:44,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:44,710 INFO L276 IsEmpty]: Start isEmpty. Operand 2197 states and 3843 transitions. [2020-11-12 03:31:44,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 03:31:44,712 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:44,713 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:44,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable109 [2020-11-12 03:31:44,913 INFO L429 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:44,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:44,914 INFO L82 PathProgramCache]: Analyzing trace with hash 596043869, now seen corresponding path program 100 times [2020-11-12 03:31:44,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:44,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528376556] [2020-11-12 03:31:44,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:44,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:45,244 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:45,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528376556] [2020-11-12 03:31:45,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971637974] [2020-11-12 03:31:45,245 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:45,327 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:31:45,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:45,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 03:31:45,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:45,364 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:31:45,386 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:45,396 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:45,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:45,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-11-12 03:31:45,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726986663] [2020-11-12 03:31:45,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 03:31:45,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:45,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 03:31:45,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2020-11-12 03:31:45,398 INFO L87 Difference]: Start difference. First operand 2197 states and 3843 transitions. Second operand has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:46,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:46,899 INFO L93 Difference]: Finished difference Result 3040 states and 5349 transitions. [2020-11-12 03:31:46,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 03:31:46,900 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 03:31:46,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:46,907 INFO L225 Difference]: With dead ends: 3040 [2020-11-12 03:31:46,907 INFO L226 Difference]: Without dead ends: 2644 [2020-11-12 03:31:46,908 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=746, Invalid=1906, Unknown=0, NotChecked=0, Total=2652 [2020-11-12 03:31:46,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2020-11-12 03:31:46,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 1812. [2020-11-12 03:31:46,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1812 states, 1748 states have (on average 1.7242562929061784) internal successors, (3014), 1811 states have internal predecessors, (3014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:46,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 3014 transitions. [2020-11-12 03:31:46,955 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 3014 transitions. Word has length 96 [2020-11-12 03:31:46,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:46,955 INFO L481 AbstractCegarLoop]: Abstraction has 1812 states and 3014 transitions. [2020-11-12 03:31:46,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:46,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 3014 transitions. [2020-11-12 03:31:46,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 03:31:46,959 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:46,959 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:47,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,106 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:47,174 INFO L429 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:47,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:47,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1279117660, now seen corresponding path program 101 times [2020-11-12 03:31:47,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:47,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031654377] [2020-11-12 03:31:47,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:47,600 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:47,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031654377] [2020-11-12 03:31:47,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19543223] [2020-11-12 03:31:47,601 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:47,689 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-11-12 03:31:47,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:47,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 03:31:47,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:47,742 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:47,776 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:47,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:47,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-11-12 03:31:47,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292690874] [2020-11-12 03:31:47,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-12 03:31:47,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:47,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-12 03:31:47,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-11-12 03:31:47,777 INFO L87 Difference]: Start difference. First operand 1812 states and 3014 transitions. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:48,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:48,536 INFO L93 Difference]: Finished difference Result 2909 states and 5144 transitions. [2020-11-12 03:31:48,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-12 03:31:48,537 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 03:31:48,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:48,541 INFO L225 Difference]: With dead ends: 2909 [2020-11-12 03:31:48,541 INFO L226 Difference]: Without dead ends: 2639 [2020-11-12 03:31:48,541 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=416, Invalid=1224, Unknown=0, NotChecked=0, Total=1640 [2020-11-12 03:31:48,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2020-11-12 03:31:48,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 1852. [2020-11-12 03:31:48,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1788 states have (on average 1.7248322147651007) internal successors, (3084), 1851 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:48,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 3084 transitions. [2020-11-12 03:31:48,568 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 3084 transitions. Word has length 101 [2020-11-12 03:31:48,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:48,569 INFO L481 AbstractCegarLoop]: Abstraction has 1852 states and 3084 transitions. [2020-11-12 03:31:48,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:48,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 3084 transitions. [2020-11-12 03:31:48,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 03:31:48,570 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:48,570 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:48,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:48,771 INFO L429 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:48,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:48,772 INFO L82 PathProgramCache]: Analyzing trace with hash 128767460, now seen corresponding path program 102 times [2020-11-12 03:31:48,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:48,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618803177] [2020-11-12 03:31:48,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:49,191 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:49,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618803177] [2020-11-12 03:31:49,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300510549] [2020-11-12 03:31:49,192 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:49,286 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-11-12 03:31:49,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:49,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 03:31:49,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:49,325 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:31:49,383 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:49,401 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:49,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:49,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-11-12 03:31:49,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122706564] [2020-11-12 03:31:49,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:31:49,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:49,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:31:49,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:31:49,402 INFO L87 Difference]: Start difference. First operand 1852 states and 3084 transitions. Second operand has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:50,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:50,368 INFO L93 Difference]: Finished difference Result 3244 states and 5794 transitions. [2020-11-12 03:31:50,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-12 03:31:50,369 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 03:31:50,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:50,372 INFO L225 Difference]: With dead ends: 3244 [2020-11-12 03:31:50,373 INFO L226 Difference]: Without dead ends: 2974 [2020-11-12 03:31:50,373 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=465, Invalid=1427, Unknown=0, NotChecked=0, Total=1892 [2020-11-12 03:31:50,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2020-11-12 03:31:50,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 1877. [2020-11-12 03:31:50,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1877 states, 1813 states have (on average 1.73138444567016) internal successors, (3139), 1876 states have internal predecessors, (3139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:50,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 3139 transitions. [2020-11-12 03:31:50,407 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 3139 transitions. Word has length 101 [2020-11-12 03:31:50,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:50,407 INFO L481 AbstractCegarLoop]: Abstraction has 1877 states and 3139 transitions. [2020-11-12 03:31:50,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:50,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 3139 transitions. [2020-11-12 03:31:50,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 03:31:50,409 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:50,409 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:50,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2020-11-12 03:31:50,611 INFO L429 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:50,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:50,611 INFO L82 PathProgramCache]: Analyzing trace with hash -792464126, now seen corresponding path program 103 times [2020-11-12 03:31:50,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:50,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028145343] [2020-11-12 03:31:50,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:51,013 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:51,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028145343] [2020-11-12 03:31:51,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494287794] [2020-11-12 03:31:51,013 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:51,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 03:31:51,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:51,153 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:51,167 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:51,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:51,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-11-12 03:31:51,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544471142] [2020-11-12 03:31:51,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-12 03:31:51,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:51,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-12 03:31:51,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2020-11-12 03:31:51,169 INFO L87 Difference]: Start difference. First operand 1877 states and 3139 transitions. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:52,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:52,034 INFO L93 Difference]: Finished difference Result 3259 states and 5804 transitions. [2020-11-12 03:31:52,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-12 03:31:52,036 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 03:31:52,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:52,041 INFO L225 Difference]: With dead ends: 3259 [2020-11-12 03:31:52,041 INFO L226 Difference]: Without dead ends: 2989 [2020-11-12 03:31:52,042 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=467, Invalid=1425, Unknown=0, NotChecked=0, Total=1892 [2020-11-12 03:31:52,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-11-12 03:31:52,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 1902. [2020-11-12 03:31:52,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1902 states, 1838 states have (on average 1.7377584330794342) internal successors, (3194), 1901 states have internal predecessors, (3194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:52,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 3194 transitions. [2020-11-12 03:31:52,077 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 3194 transitions. Word has length 101 [2020-11-12 03:31:52,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:52,077 INFO L481 AbstractCegarLoop]: Abstraction has 1902 states and 3194 transitions. [2020-11-12 03:31:52,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:52,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 3194 transitions. [2020-11-12 03:31:52,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 03:31:52,080 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:52,080 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:52,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2020-11-12 03:31:52,281 INFO L429 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:52,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:52,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1806654398, now seen corresponding path program 104 times [2020-11-12 03:31:52,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:52,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79697143] [2020-11-12 03:31:52,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:52,705 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:52,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79697143] [2020-11-12 03:31:52,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031540119] [2020-11-12 03:31:52,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:52,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:31:52,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:52,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 03:31:52,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:52,855 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:31:52,932 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:52,961 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:52,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:52,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-11-12 03:31:52,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278956316] [2020-11-12 03:31:52,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:31:52,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:52,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:31:52,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:31:52,964 INFO L87 Difference]: Start difference. First operand 1902 states and 3194 transitions. Second operand has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:54,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:54,123 INFO L93 Difference]: Finished difference Result 3259 states and 5784 transitions. [2020-11-12 03:31:54,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-12 03:31:54,124 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 03:31:54,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:54,128 INFO L225 Difference]: With dead ends: 3259 [2020-11-12 03:31:54,128 INFO L226 Difference]: Without dead ends: 2989 [2020-11-12 03:31:54,129 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=490, Invalid=1580, Unknown=0, NotChecked=0, Total=2070 [2020-11-12 03:31:54,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-11-12 03:31:54,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 1927. [2020-11-12 03:31:54,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1927 states, 1863 states have (on average 1.7439613526570048) internal successors, (3249), 1926 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:54,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1927 states to 1927 states and 3249 transitions. [2020-11-12 03:31:54,173 INFO L78 Accepts]: Start accepts. Automaton has 1927 states and 3249 transitions. Word has length 101 [2020-11-12 03:31:54,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:54,173 INFO L481 AbstractCegarLoop]: Abstraction has 1927 states and 3249 transitions. [2020-11-12 03:31:54,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:54,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1927 states and 3249 transitions. [2020-11-12 03:31:54,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 03:31:54,176 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:54,176 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:54,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2020-11-12 03:31:54,377 INFO L429 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:54,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:54,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1016099040, now seen corresponding path program 105 times [2020-11-12 03:31:54,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:54,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168863419] [2020-11-12 03:31:54,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:54,749 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:54,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168863419] [2020-11-12 03:31:54,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229958254] [2020-11-12 03:31:54,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:54,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-11-12 03:31:54,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:54,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 03:31:54,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:54,912 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:54,934 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:54,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:54,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-11-12 03:31:54,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921728690] [2020-11-12 03:31:54,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-12 03:31:54,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:54,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-12 03:31:54,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2020-11-12 03:31:54,936 INFO L87 Difference]: Start difference. First operand 1927 states and 3249 transitions. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:55,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:55,838 INFO L93 Difference]: Finished difference Result 3259 states and 5764 transitions. [2020-11-12 03:31:55,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-12 03:31:55,839 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 03:31:55,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:55,844 INFO L225 Difference]: With dead ends: 3259 [2020-11-12 03:31:55,844 INFO L226 Difference]: Without dead ends: 2989 [2020-11-12 03:31:55,844 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=506, Invalid=1564, Unknown=0, NotChecked=0, Total=2070 [2020-11-12 03:31:55,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-11-12 03:31:55,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 1952. [2020-11-12 03:31:55,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1888 states have (on average 1.75) internal successors, (3304), 1951 states have internal predecessors, (3304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:55,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 3304 transitions. [2020-11-12 03:31:55,873 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 3304 transitions. Word has length 101 [2020-11-12 03:31:55,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:55,873 INFO L481 AbstractCegarLoop]: Abstraction has 1952 states and 3304 transitions. [2020-11-12 03:31:55,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:55,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 3304 transitions. [2020-11-12 03:31:55,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 03:31:55,875 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:55,875 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:56,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,111 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:56,076 INFO L429 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:56,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:56,076 INFO L82 PathProgramCache]: Analyzing trace with hash 538128416, now seen corresponding path program 106 times [2020-11-12 03:31:56,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:56,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322077783] [2020-11-12 03:31:56,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:56,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:56,505 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:56,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322077783] [2020-11-12 03:31:56,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213849279] [2020-11-12 03:31:56,505 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:56,596 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:31:56,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:56,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 03:31:56,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:56,632 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:31:56,688 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:56,703 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:56,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:56,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-11-12 03:31:56,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850908225] [2020-11-12 03:31:56,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:31:56,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:56,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:31:56,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:31:56,704 INFO L87 Difference]: Start difference. First operand 1952 states and 3304 transitions. Second operand has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:57,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:57,820 INFO L93 Difference]: Finished difference Result 3259 states and 5744 transitions. [2020-11-12 03:31:57,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-12 03:31:57,820 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 03:31:57,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:57,824 INFO L225 Difference]: With dead ends: 3259 [2020-11-12 03:31:57,824 INFO L226 Difference]: Without dead ends: 2989 [2020-11-12 03:31:57,825 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=531, Invalid=1725, Unknown=0, NotChecked=0, Total=2256 [2020-11-12 03:31:57,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-11-12 03:31:57,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 1977. [2020-11-12 03:31:57,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1977 states, 1913 states have (on average 1.755880815473079) internal successors, (3359), 1976 states have internal predecessors, (3359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:57,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1977 states to 1977 states and 3359 transitions. [2020-11-12 03:31:57,852 INFO L78 Accepts]: Start accepts. Automaton has 1977 states and 3359 transitions. Word has length 101 [2020-11-12 03:31:57,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:57,852 INFO L481 AbstractCegarLoop]: Abstraction has 1977 states and 3359 transitions. [2020-11-12 03:31:57,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:57,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1977 states and 3359 transitions. [2020-11-12 03:31:57,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 03:31:57,854 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:57,854 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:58,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2020-11-12 03:31:58,064 INFO L429 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:58,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:58,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1684965950, now seen corresponding path program 107 times [2020-11-12 03:31:58,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:58,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976266086] [2020-11-12 03:31:58,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:31:58,467 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:58,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976266086] [2020-11-12 03:31:58,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280019768] [2020-11-12 03:31:58,467 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 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:31:58,555 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-11-12 03:31:58,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:31:58,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 03:31:58,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:31:58,615 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:31:58,629 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:31:58,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:31:58,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-11-12 03:31:58,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717672218] [2020-11-12 03:31:58,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-12 03:31:58,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:31:58,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-12 03:31:58,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2020-11-12 03:31:58,631 INFO L87 Difference]: Start difference. First operand 1977 states and 3359 transitions. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:59,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:31:59,660 INFO L93 Difference]: Finished difference Result 3259 states and 5724 transitions. [2020-11-12 03:31:59,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-12 03:31:59,661 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 03:31:59,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:31:59,665 INFO L225 Difference]: With dead ends: 3259 [2020-11-12 03:31:59,665 INFO L226 Difference]: Without dead ends: 2989 [2020-11-12 03:31:59,665 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=561, Invalid=1695, Unknown=0, NotChecked=0, Total=2256 [2020-11-12 03:31:59,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-11-12 03:31:59,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 2002. [2020-11-12 03:31:59,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2002 states, 1938 states have (on average 1.761609907120743) internal successors, (3414), 2001 states have internal predecessors, (3414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:59,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 3414 transitions. [2020-11-12 03:31:59,694 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 3414 transitions. Word has length 101 [2020-11-12 03:31:59,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:31:59,694 INFO L481 AbstractCegarLoop]: Abstraction has 2002 states and 3414 transitions. [2020-11-12 03:31:59,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:31:59,694 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 3414 transitions. [2020-11-12 03:31:59,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 03:31:59,696 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:31:59,696 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:31:59,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2020-11-12 03:31:59,897 INFO L429 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:31:59,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:31:59,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1321510530, now seen corresponding path program 108 times [2020-11-12 03:31:59,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:31:59,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318087775] [2020-11-12 03:31:59,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:31:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:00,289 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:00,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318087775] [2020-11-12 03:32:00,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140466994] [2020-11-12 03:32:00,289 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:00,382 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-11-12 03:32:00,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:00,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 03:32:00,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:00,419 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:32:00,477 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:00,491 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:00,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:00,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-11-12 03:32:00,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263097572] [2020-11-12 03:32:00,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:32:00,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:00,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:32:00,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:32:00,492 INFO L87 Difference]: Start difference. First operand 2002 states and 3414 transitions. Second operand has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:01,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:01,719 INFO L93 Difference]: Finished difference Result 3259 states and 5704 transitions. [2020-11-12 03:32:01,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-12 03:32:01,719 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 03:32:01,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:01,722 INFO L225 Difference]: With dead ends: 3259 [2020-11-12 03:32:01,722 INFO L226 Difference]: Without dead ends: 2989 [2020-11-12 03:32:01,723 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=588, Invalid=1862, Unknown=0, NotChecked=0, Total=2450 [2020-11-12 03:32:01,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-11-12 03:32:01,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 2027. [2020-11-12 03:32:01,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2027 states, 1963 states have (on average 1.7671930718288333) internal successors, (3469), 2026 states have internal predecessors, (3469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:01,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 3469 transitions. [2020-11-12 03:32:01,751 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 3469 transitions. Word has length 101 [2020-11-12 03:32:01,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:01,751 INFO L481 AbstractCegarLoop]: Abstraction has 2027 states and 3469 transitions. [2020-11-12 03:32:01,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:01,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 3469 transitions. [2020-11-12 03:32:01,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 03:32:01,753 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:01,753 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:01,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2020-11-12 03:32:01,954 INFO L429 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:01,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:01,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1992106268, now seen corresponding path program 109 times [2020-11-12 03:32:01,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:01,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774275050] [2020-11-12 03:32:01,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:02,351 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:02,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774275050] [2020-11-12 03:32:02,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685348333] [2020-11-12 03:32:02,351 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:02,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 03:32:02,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:02,510 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:02,523 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:02,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:02,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-11-12 03:32:02,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995360590] [2020-11-12 03:32:02,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-12 03:32:02,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:02,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-12 03:32:02,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2020-11-12 03:32:02,525 INFO L87 Difference]: Start difference. First operand 2027 states and 3469 transitions. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:03,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:03,752 INFO L93 Difference]: Finished difference Result 3259 states and 5684 transitions. [2020-11-12 03:32:03,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 03:32:03,753 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 03:32:03,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:03,758 INFO L225 Difference]: With dead ends: 3259 [2020-11-12 03:32:03,759 INFO L226 Difference]: Without dead ends: 2989 [2020-11-12 03:32:03,759 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=632, Invalid=1818, Unknown=0, NotChecked=0, Total=2450 [2020-11-12 03:32:03,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-11-12 03:32:03,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 2052. [2020-11-12 03:32:03,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 1988 states have (on average 1.772635814889336) internal successors, (3524), 2051 states have internal predecessors, (3524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:03,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 3524 transitions. [2020-11-12 03:32:03,798 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 3524 transitions. Word has length 101 [2020-11-12 03:32:03,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:03,798 INFO L481 AbstractCegarLoop]: Abstraction has 2052 states and 3524 transitions. [2020-11-12 03:32:03,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:03,799 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 3524 transitions. [2020-11-12 03:32:03,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 03:32:03,800 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:03,800 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:04,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:04,001 INFO L429 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:04,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:04,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1328021596, now seen corresponding path program 110 times [2020-11-12 03:32:04,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:04,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617088712] [2020-11-12 03:32:04,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:04,442 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:04,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617088712] [2020-11-12 03:32:04,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125901352] [2020-11-12 03:32:04,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:04,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:32:04,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:04,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 03:32:04,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:04,571 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:32:04,637 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:04,650 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:04,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:04,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-11-12 03:32:04,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672796972] [2020-11-12 03:32:04,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:32:04,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:04,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:32:04,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:32:04,652 INFO L87 Difference]: Start difference. First operand 2052 states and 3524 transitions. Second operand has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:06,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:06,246 INFO L93 Difference]: Finished difference Result 3259 states and 5664 transitions. [2020-11-12 03:32:06,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-12 03:32:06,247 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 03:32:06,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:06,253 INFO L225 Difference]: With dead ends: 3259 [2020-11-12 03:32:06,253 INFO L226 Difference]: Without dead ends: 2989 [2020-11-12 03:32:06,253 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=661, Invalid=1991, Unknown=0, NotChecked=0, Total=2652 [2020-11-12 03:32:06,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-11-12 03:32:06,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 2077. [2020-11-12 03:32:06,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2077 states, 2013 states have (on average 1.7779433681073025) internal successors, (3579), 2076 states have internal predecessors, (3579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:06,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 3579 transitions. [2020-11-12 03:32:06,291 INFO L78 Accepts]: Start accepts. Automaton has 2077 states and 3579 transitions. Word has length 101 [2020-11-12 03:32:06,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:06,291 INFO L481 AbstractCegarLoop]: Abstraction has 2077 states and 3579 transitions. [2020-11-12 03:32:06,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:06,292 INFO L276 IsEmpty]: Start isEmpty. Operand 2077 states and 3579 transitions. [2020-11-12 03:32:06,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 03:32:06,295 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:06,295 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:06,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,116 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:06,496 INFO L429 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:06,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:06,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1626543482, now seen corresponding path program 111 times [2020-11-12 03:32:06,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:06,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022884688] [2020-11-12 03:32:06,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:06,838 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:06,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022884688] [2020-11-12 03:32:06,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089243250] [2020-11-12 03:32:06,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:06,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-11-12 03:32:06,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:06,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 03:32:06,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:06,982 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:06,994 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:06,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:06,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-11-12 03:32:06,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592756459] [2020-11-12 03:32:06,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-12 03:32:06,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:06,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-12 03:32:06,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2020-11-12 03:32:06,996 INFO L87 Difference]: Start difference. First operand 2077 states and 3579 transitions. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:08,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:08,154 INFO L93 Difference]: Finished difference Result 3259 states and 5644 transitions. [2020-11-12 03:32:08,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 03:32:08,155 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 03:32:08,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:08,159 INFO L225 Difference]: With dead ends: 3259 [2020-11-12 03:32:08,159 INFO L226 Difference]: Without dead ends: 2989 [2020-11-12 03:32:08,160 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=719, Invalid=1933, Unknown=0, NotChecked=0, Total=2652 [2020-11-12 03:32:08,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-11-12 03:32:08,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 2102. [2020-11-12 03:32:08,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2102 states, 2038 states have (on average 1.7831207065750736) internal successors, (3634), 2101 states have internal predecessors, (3634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:08,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2102 states to 2102 states and 3634 transitions. [2020-11-12 03:32:08,188 INFO L78 Accepts]: Start accepts. Automaton has 2102 states and 3634 transitions. Word has length 101 [2020-11-12 03:32:08,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:08,188 INFO L481 AbstractCegarLoop]: Abstraction has 2102 states and 3634 transitions. [2020-11-12 03:32:08,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:08,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2102 states and 3634 transitions. [2020-11-12 03:32:08,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 03:32:08,207 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:08,207 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:08,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:08,408 INFO L429 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:08,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:08,409 INFO L82 PathProgramCache]: Analyzing trace with hash 5244090, now seen corresponding path program 112 times [2020-11-12 03:32:08,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:08,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085984364] [2020-11-12 03:32:08,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:08,775 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:08,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085984364] [2020-11-12 03:32:08,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832830297] [2020-11-12 03:32:08,776 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:08,860 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:32:08,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:08,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 03:32:08,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:08,896 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:32:08,947 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:08,958 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:08,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:08,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-11-12 03:32:08,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481316530] [2020-11-12 03:32:08,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:32:08,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:08,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:32:08,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:32:08,960 INFO L87 Difference]: Start difference. First operand 2102 states and 3634 transitions. Second operand has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:10,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:10,460 INFO L93 Difference]: Finished difference Result 3304 states and 5702 transitions. [2020-11-12 03:32:10,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-12 03:32:10,461 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 03:32:10,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:10,464 INFO L225 Difference]: With dead ends: 3304 [2020-11-12 03:32:10,465 INFO L226 Difference]: Without dead ends: 3034 [2020-11-12 03:32:10,466 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=750, Invalid=2112, Unknown=0, NotChecked=0, Total=2862 [2020-11-12 03:32:10,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3034 states. [2020-11-12 03:32:10,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3034 to 2127. [2020-11-12 03:32:10,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2127 states, 2063 states have (on average 1.7910809500727096) internal successors, (3695), 2126 states have internal predecessors, (3695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:10,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2127 states to 2127 states and 3695 transitions. [2020-11-12 03:32:10,502 INFO L78 Accepts]: Start accepts. Automaton has 2127 states and 3695 transitions. Word has length 101 [2020-11-12 03:32:10,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:10,502 INFO L481 AbstractCegarLoop]: Abstraction has 2127 states and 3695 transitions. [2020-11-12 03:32:10,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:10,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2127 states and 3695 transitions. [2020-11-12 03:32:10,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 03:32:10,505 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:10,505 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:10,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2020-11-12 03:32:10,706 INFO L429 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:10,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:10,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1139334254, now seen corresponding path program 113 times [2020-11-12 03:32:10,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:10,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191350594] [2020-11-12 03:32:10,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:11,064 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:11,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191350594] [2020-11-12 03:32:11,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869226496] [2020-11-12 03:32:11,065 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:11,155 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-11-12 03:32:11,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:11,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 03:32:11,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:11,232 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:11,243 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:11,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:11,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-11-12 03:32:11,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469347225] [2020-11-12 03:32:11,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-12 03:32:11,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:11,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-12 03:32:11,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-11-12 03:32:11,245 INFO L87 Difference]: Start difference. First operand 2127 states and 3695 transitions. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:12,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:12,551 INFO L93 Difference]: Finished difference Result 4366 states and 7114 transitions. [2020-11-12 03:32:12,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 03:32:12,552 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 03:32:12,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:12,558 INFO L225 Difference]: With dead ends: 4366 [2020-11-12 03:32:12,559 INFO L226 Difference]: Without dead ends: 4081 [2020-11-12 03:32:12,559 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=823, Invalid=2039, Unknown=0, NotChecked=0, Total=2862 [2020-11-12 03:32:12,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4081 states. [2020-11-12 03:32:12,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4081 to 2212. [2020-11-12 03:32:12,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2212 states, 2148 states have (on average 1.8123836126629422) internal successors, (3893), 2211 states have internal predecessors, (3893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:12,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 3893 transitions. [2020-11-12 03:32:12,603 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 3893 transitions. Word has length 101 [2020-11-12 03:32:12,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:12,604 INFO L481 AbstractCegarLoop]: Abstraction has 2212 states and 3893 transitions. [2020-11-12 03:32:12,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:12,604 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 3893 transitions. [2020-11-12 03:32:12,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 03:32:12,606 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:12,606 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:12,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2020-11-12 03:32:12,808 INFO L429 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:12,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:12,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1979311446, now seen corresponding path program 114 times [2020-11-12 03:32:12,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:12,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342745948] [2020-11-12 03:32:12,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:13,176 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:13,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342745948] [2020-11-12 03:32:13,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828052826] [2020-11-12 03:32:13,177 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:13,273 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-11-12 03:32:13,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:13,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 03:32:13,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:13,319 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:32:13,357 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:13,368 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:13,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:13,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-11-12 03:32:13,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155169796] [2020-11-12 03:32:13,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:32:13,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:13,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:32:13,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:32:13,370 INFO L87 Difference]: Start difference. First operand 2212 states and 3893 transitions. 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) [2020-11-12 03:32:15,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:15,185 INFO L93 Difference]: Finished difference Result 3746 states and 6467 transitions. [2020-11-12 03:32:15,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 03:32:15,186 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 [2020-11-12 03:32:15,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:15,191 INFO L225 Difference]: With dead ends: 3746 [2020-11-12 03:32:15,191 INFO L226 Difference]: Without dead ends: 3174 [2020-11-12 03:32:15,192 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 914 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=896, Invalid=2526, Unknown=0, NotChecked=0, Total=3422 [2020-11-12 03:32:15,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3174 states. [2020-11-12 03:32:15,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3174 to 2107. [2020-11-12 03:32:15,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2107 states, 2043 states have (on average 1.8037200195790504) internal successors, (3685), 2106 states have internal predecessors, (3685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:15,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2107 states to 2107 states and 3685 transitions. [2020-11-12 03:32:15,235 INFO L78 Accepts]: Start accepts. Automaton has 2107 states and 3685 transitions. Word has length 101 [2020-11-12 03:32:15,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:15,235 INFO L481 AbstractCegarLoop]: Abstraction has 2107 states and 3685 transitions. [2020-11-12 03:32:15,235 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) [2020-11-12 03:32:15,235 INFO L276 IsEmpty]: Start isEmpty. Operand 2107 states and 3685 transitions. [2020-11-12 03:32:15,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:32:15,237 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:15,237 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:15,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2020-11-12 03:32:15,438 INFO L429 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:15,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:15,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1123478080, now seen corresponding path program 115 times [2020-11-12 03:32:15,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:15,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252621028] [2020-11-12 03:32:15,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:15,951 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:15,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252621028] [2020-11-12 03:32:15,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849801230] [2020-11-12 03:32:15,952 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:16,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 03:32:16,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:16,110 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:16,162 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:16,182 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:16,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:16,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 25 [2020-11-12 03:32:16,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117534834] [2020-11-12 03:32:16,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:32:16,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:16,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:32:16,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:32:16,184 INFO L87 Difference]: Start difference. First operand 2107 states and 3685 transitions. Second operand has 25 states, 25 states have (on average 5.16) internal successors, (129), 25 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:17,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:17,187 INFO L93 Difference]: Finished difference Result 3265 states and 5729 transitions. [2020-11-12 03:32:17,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-12 03:32:17,188 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.16) internal successors, (129), 25 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:32:17,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:17,192 INFO L225 Difference]: With dead ends: 3265 [2020-11-12 03:32:17,192 INFO L226 Difference]: Without dead ends: 2931 [2020-11-12 03:32:17,193 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2020-11-12 03:32:17,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2020-11-12 03:32:17,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 2182. [2020-11-12 03:32:17,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2182 states, 2118 states have (on average 1.8106704438149197) internal successors, (3835), 2181 states have internal predecessors, (3835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:17,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2182 states to 2182 states and 3835 transitions. [2020-11-12 03:32:17,246 INFO L78 Accepts]: Start accepts. Automaton has 2182 states and 3835 transitions. Word has length 106 [2020-11-12 03:32:17,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:17,246 INFO L481 AbstractCegarLoop]: Abstraction has 2182 states and 3835 transitions. [2020-11-12 03:32:17,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.16) internal successors, (129), 25 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:17,246 INFO L276 IsEmpty]: Start isEmpty. Operand 2182 states and 3835 transitions. [2020-11-12 03:32:17,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:32:17,249 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:17,249 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:17,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-11-12 03:32:17,457 INFO L429 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:17,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:17,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1037274210, now seen corresponding path program 116 times [2020-11-12 03:32:17,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:17,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926379623] [2020-11-12 03:32:17,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:17,907 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:17,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926379623] [2020-11-12 03:32:17,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955580098] [2020-11-12 03:32:17,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:17,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:32:17,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:17,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 03:32:17,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:18,041 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:18,059 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:18,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:18,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-11-12 03:32:18,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167708995] [2020-11-12 03:32:18,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:32:18,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:18,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:32:18,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:32:18,061 INFO L87 Difference]: Start difference. First operand 2182 states and 3835 transitions. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:18,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:18,836 INFO L93 Difference]: Finished difference Result 3759 states and 6910 transitions. [2020-11-12 03:32:18,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-12 03:32:18,837 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:32:18,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:18,842 INFO L225 Difference]: With dead ends: 3759 [2020-11-12 03:32:18,842 INFO L226 Difference]: Without dead ends: 3489 [2020-11-12 03:32:18,842 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=446, Invalid=1194, Unknown=0, NotChecked=0, Total=1640 [2020-11-12 03:32:18,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3489 states. [2020-11-12 03:32:18,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3489 to 2242. [2020-11-12 03:32:18,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2242 states, 2178 states have (on average 1.7998163452708906) internal successors, (3920), 2241 states have internal predecessors, (3920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:18,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2242 states to 2242 states and 3920 transitions. [2020-11-12 03:32:18,879 INFO L78 Accepts]: Start accepts. Automaton has 2242 states and 3920 transitions. Word has length 106 [2020-11-12 03:32:18,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:18,879 INFO L481 AbstractCegarLoop]: Abstraction has 2242 states and 3920 transitions. [2020-11-12 03:32:18,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:18,880 INFO L276 IsEmpty]: Start isEmpty. Operand 2242 states and 3920 transitions. [2020-11-12 03:32:18,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:32:18,883 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:18,883 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:19,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2020-11-12 03:32:19,086 INFO L429 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:19,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:19,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1932494366, now seen corresponding path program 117 times [2020-11-12 03:32:19,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:19,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468626613] [2020-11-12 03:32:19,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:19,560 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:19,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468626613] [2020-11-12 03:32:19,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120138073] [2020-11-12 03:32:19,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:19,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-11-12 03:32:19,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:19,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 03:32:19,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:19,691 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:32:19,746 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:19,782 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:19,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:19,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-11-12 03:32:19,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488133365] [2020-11-12 03:32:19,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:32:19,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:19,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:32:19,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:32:19,784 INFO L87 Difference]: Start difference. First operand 2242 states and 3920 transitions. Second operand has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:20,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:20,721 INFO L93 Difference]: Finished difference Result 3689 states and 6745 transitions. [2020-11-12 03:32:20,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-12 03:32:20,722 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:32:20,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:20,728 INFO L225 Difference]: With dead ends: 3689 [2020-11-12 03:32:20,728 INFO L226 Difference]: Without dead ends: 3419 [2020-11-12 03:32:20,729 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=507, Invalid=1473, Unknown=0, NotChecked=0, Total=1980 [2020-11-12 03:32:20,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3419 states. [2020-11-12 03:32:20,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3419 to 2267. [2020-11-12 03:32:20,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2267 states, 2203 states have (on average 1.790739900136178) internal successors, (3945), 2266 states have internal predecessors, (3945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:20,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2267 states to 2267 states and 3945 transitions. [2020-11-12 03:32:20,772 INFO L78 Accepts]: Start accepts. Automaton has 2267 states and 3945 transitions. Word has length 106 [2020-11-12 03:32:20,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:20,773 INFO L481 AbstractCegarLoop]: Abstraction has 2267 states and 3945 transitions. [2020-11-12 03:32:20,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:20,773 INFO L276 IsEmpty]: Start isEmpty. Operand 2267 states and 3945 transitions. [2020-11-12 03:32:20,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:32:20,775 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:20,775 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:20,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:20,985 INFO L429 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:20,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:20,986 INFO L82 PathProgramCache]: Analyzing trace with hash 835680634, now seen corresponding path program 118 times [2020-11-12 03:32:20,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:20,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77915463] [2020-11-12 03:32:20,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:20,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:21,434 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:21,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77915463] [2020-11-12 03:32:21,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930330703] [2020-11-12 03:32:21,434 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:21,523 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:32:21,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:21,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:32:21,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:21,580 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:21,597 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:21,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:21,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-11-12 03:32:21,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044355216] [2020-11-12 03:32:21,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:32:21,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:21,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:32:21,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:32:21,600 INFO L87 Difference]: Start difference. First operand 2267 states and 3945 transitions. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:22,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:22,480 INFO L93 Difference]: Finished difference Result 3689 states and 6720 transitions. [2020-11-12 03:32:22,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-12 03:32:22,482 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:32:22,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:22,488 INFO L225 Difference]: With dead ends: 3689 [2020-11-12 03:32:22,488 INFO L226 Difference]: Without dead ends: 3419 [2020-11-12 03:32:22,488 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=454, Invalid=1352, Unknown=0, NotChecked=0, Total=1806 [2020-11-12 03:32:22,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3419 states. [2020-11-12 03:32:22,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3419 to 2292. [2020-11-12 03:32:22,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2292 states, 2228 states have (on average 1.781867145421903) internal successors, (3970), 2291 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:22,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 3970 transitions. [2020-11-12 03:32:22,530 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 3970 transitions. Word has length 106 [2020-11-12 03:32:22,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:22,531 INFO L481 AbstractCegarLoop]: Abstraction has 2292 states and 3970 transitions. [2020-11-12 03:32:22,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:22,531 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 3970 transitions. [2020-11-12 03:32:22,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:32:22,533 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:22,533 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:22,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2020-11-12 03:32:22,734 INFO L429 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:22,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:22,735 INFO L82 PathProgramCache]: Analyzing trace with hash -2051401542, now seen corresponding path program 119 times [2020-11-12 03:32:22,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:22,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496099620] [2020-11-12 03:32:22,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:23,234 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:23,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496099620] [2020-11-12 03:32:23,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292347971] [2020-11-12 03:32:23,235 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:23,325 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-11-12 03:32:23,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:23,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 03:32:23,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:23,364 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:32:23,422 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:23,439 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:23,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:23,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-11-12 03:32:23,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107538610] [2020-11-12 03:32:23,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:32:23,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:23,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:32:23,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:32:23,440 INFO L87 Difference]: Start difference. First operand 2292 states and 3970 transitions. Second operand has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:24,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:24,542 INFO L93 Difference]: Finished difference Result 3664 states and 6645 transitions. [2020-11-12 03:32:24,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-12 03:32:24,543 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:32:24,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:24,548 INFO L225 Difference]: With dead ends: 3664 [2020-11-12 03:32:24,548 INFO L226 Difference]: Without dead ends: 3394 [2020-11-12 03:32:24,549 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=523, Invalid=1639, Unknown=0, NotChecked=0, Total=2162 [2020-11-12 03:32:24,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3394 states. [2020-11-12 03:32:24,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3394 to 2292. [2020-11-12 03:32:24,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2292 states, 2228 states have (on average 1.781867145421903) internal successors, (3970), 2291 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:24,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 3970 transitions. [2020-11-12 03:32:24,581 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 3970 transitions. Word has length 106 [2020-11-12 03:32:24,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:24,582 INFO L481 AbstractCegarLoop]: Abstraction has 2292 states and 3970 transitions. [2020-11-12 03:32:24,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:24,582 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 3970 transitions. [2020-11-12 03:32:24,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:32:24,584 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:24,584 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:24,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2020-11-12 03:32:24,785 INFO L429 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:24,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:24,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1322334168, now seen corresponding path program 120 times [2020-11-12 03:32:24,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:24,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602059334] [2020-11-12 03:32:24,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:25,240 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:25,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602059334] [2020-11-12 03:32:25,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314808256] [2020-11-12 03:32:25,241 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:25,347 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-11-12 03:32:25,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:25,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 03:32:25,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:25,409 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:25,448 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:25,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:25,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-11-12 03:32:25,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951725568] [2020-11-12 03:32:25,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:32:25,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:25,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:32:25,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:32:25,450 INFO L87 Difference]: Start difference. First operand 2292 states and 3970 transitions. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:26,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:26,528 INFO L93 Difference]: Finished difference Result 3614 states and 6545 transitions. [2020-11-12 03:32:26,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-12 03:32:26,529 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:32:26,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:26,536 INFO L225 Difference]: With dead ends: 3614 [2020-11-12 03:32:26,536 INFO L226 Difference]: Without dead ends: 3344 [2020-11-12 03:32:26,537 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=478, Invalid=1502, Unknown=0, NotChecked=0, Total=1980 [2020-11-12 03:32:26,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3344 states. [2020-11-12 03:32:26,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3344 to 2292. [2020-11-12 03:32:26,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2292 states, 2228 states have (on average 1.781867145421903) internal successors, (3970), 2291 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:26,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 3970 transitions. [2020-11-12 03:32:26,575 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 3970 transitions. Word has length 106 [2020-11-12 03:32:26,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:26,575 INFO L481 AbstractCegarLoop]: Abstraction has 2292 states and 3970 transitions. [2020-11-12 03:32:26,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:26,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 3970 transitions. [2020-11-12 03:32:26,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:32:26,578 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:26,578 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:26,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,126 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:26,780 INFO L429 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:26,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:26,781 INFO L82 PathProgramCache]: Analyzing trace with hash 308143896, now seen corresponding path program 121 times [2020-11-12 03:32:26,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:26,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114920314] [2020-11-12 03:32:26,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:27,215 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:27,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114920314] [2020-11-12 03:32:27,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547464703] [2020-11-12 03:32:27,216 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:27,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 03:32:27,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:27,338 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:32:27,400 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:27,423 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:27,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:27,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-11-12 03:32:27,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276077024] [2020-11-12 03:32:27,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:32:27,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:27,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:32:27,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:32:27,426 INFO L87 Difference]: Start difference. First operand 2292 states and 3970 transitions. Second operand has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:28,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:28,629 INFO L93 Difference]: Finished difference Result 3564 states and 6445 transitions. [2020-11-12 03:32:28,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-12 03:32:28,630 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:32:28,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:28,635 INFO L225 Difference]: With dead ends: 3564 [2020-11-12 03:32:28,635 INFO L226 Difference]: Without dead ends: 3294 [2020-11-12 03:32:28,636 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=555, Invalid=1797, Unknown=0, NotChecked=0, Total=2352 [2020-11-12 03:32:28,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3294 states. [2020-11-12 03:32:28,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3294 to 2292. [2020-11-12 03:32:28,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2292 states, 2228 states have (on average 1.781867145421903) internal successors, (3970), 2291 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:28,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 3970 transitions. [2020-11-12 03:32:28,673 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 3970 transitions. Word has length 106 [2020-11-12 03:32:28,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:28,673 INFO L481 AbstractCegarLoop]: Abstraction has 2292 states and 3970 transitions. [2020-11-12 03:32:28,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:28,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 3970 transitions. [2020-11-12 03:32:28,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:32:28,676 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:28,676 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:28,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,127 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:28,877 INFO L429 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:28,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:28,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1164069962, now seen corresponding path program 122 times [2020-11-12 03:32:28,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:28,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488346574] [2020-11-12 03:32:28,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:29,291 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:29,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488346574] [2020-11-12 03:32:29,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170831325] [2020-11-12 03:32:29,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:29,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:32:29,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:29,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 03:32:29,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:29,460 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:29,485 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:29,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:29,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-11-12 03:32:29,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191177336] [2020-11-12 03:32:29,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:32:29,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:29,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:32:29,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:32:29,488 INFO L87 Difference]: Start difference. First operand 2292 states and 3970 transitions. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:30,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:30,527 INFO L93 Difference]: Finished difference Result 3514 states and 6345 transitions. [2020-11-12 03:32:30,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-12 03:32:30,528 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:32:30,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:30,534 INFO L225 Difference]: With dead ends: 3514 [2020-11-12 03:32:30,534 INFO L226 Difference]: Without dead ends: 3244 [2020-11-12 03:32:30,535 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=518, Invalid=1644, Unknown=0, NotChecked=0, Total=2162 [2020-11-12 03:32:30,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3244 states. [2020-11-12 03:32:30,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3244 to 2292. [2020-11-12 03:32:30,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2292 states, 2228 states have (on average 1.781867145421903) internal successors, (3970), 2291 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:30,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 3970 transitions. [2020-11-12 03:32:30,574 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 3970 transitions. Word has length 106 [2020-11-12 03:32:30,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:30,574 INFO L481 AbstractCegarLoop]: Abstraction has 2292 states and 3970 transitions. [2020-11-12 03:32:30,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:30,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 3970 transitions. [2020-11-12 03:32:30,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:32:30,577 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:30,577 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:30,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,128 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:30,778 INFO L429 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:30,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:30,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1642040586, now seen corresponding path program 123 times [2020-11-12 03:32:30,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:30,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793431486] [2020-11-12 03:32:30,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:30,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:31,204 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:31,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793431486] [2020-11-12 03:32:31,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384286211] [2020-11-12 03:32:31,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:31,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-11-12 03:32:31,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:31,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 03:32:31,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:31,366 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:32:31,428 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:31,450 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:31,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:31,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-11-12 03:32:31,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022880270] [2020-11-12 03:32:31,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:32:31,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:31,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:32:31,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:32:31,452 INFO L87 Difference]: Start difference. First operand 2292 states and 3970 transitions. Second operand has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:32,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:32,824 INFO L93 Difference]: Finished difference Result 3464 states and 6245 transitions. [2020-11-12 03:32:32,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-12 03:32:32,825 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:32:32,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:32,831 INFO L225 Difference]: With dead ends: 3464 [2020-11-12 03:32:32,831 INFO L226 Difference]: Without dead ends: 3194 [2020-11-12 03:32:32,831 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=603, Invalid=1947, Unknown=0, NotChecked=0, Total=2550 [2020-11-12 03:32:32,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-11-12 03:32:32,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2292. [2020-11-12 03:32:32,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2292 states, 2228 states have (on average 1.781867145421903) internal successors, (3970), 2291 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:32,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 3970 transitions. [2020-11-12 03:32:32,867 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 3970 transitions. Word has length 106 [2020-11-12 03:32:32,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:32,868 INFO L481 AbstractCegarLoop]: Abstraction has 2292 states and 3970 transitions. [2020-11-12 03:32:32,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:32,868 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 3970 transitions. [2020-11-12 03:32:32,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:32:32,871 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:32,871 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:33,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2020-11-12 03:32:33,072 INFO L429 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:33,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:33,073 INFO L82 PathProgramCache]: Analyzing trace with hash -495203052, now seen corresponding path program 124 times [2020-11-12 03:32:33,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:33,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697432399] [2020-11-12 03:32:33,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:33,467 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:33,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697432399] [2020-11-12 03:32:33,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004939602] [2020-11-12 03:32:33,468 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:33,555 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:32:33,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:33,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:32:33,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:33,614 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:33,643 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:33,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:33,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-11-12 03:32:33,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308625730] [2020-11-12 03:32:33,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:32:33,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:33,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:32:33,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:32:33,645 INFO L87 Difference]: Start difference. First operand 2292 states and 3970 transitions. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:34,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:34,877 INFO L93 Difference]: Finished difference Result 3414 states and 6145 transitions. [2020-11-12 03:32:34,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-12 03:32:34,878 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:32:34,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:34,883 INFO L225 Difference]: With dead ends: 3414 [2020-11-12 03:32:34,884 INFO L226 Difference]: Without dead ends: 3144 [2020-11-12 03:32:34,884 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=574, Invalid=1778, Unknown=0, NotChecked=0, Total=2352 [2020-11-12 03:32:34,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3144 states. [2020-11-12 03:32:34,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3144 to 2292. [2020-11-12 03:32:34,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2292 states, 2228 states have (on average 1.781867145421903) internal successors, (3970), 2291 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:34,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 3970 transitions. [2020-11-12 03:32:34,924 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 3970 transitions. Word has length 106 [2020-11-12 03:32:34,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:34,925 INFO L481 AbstractCegarLoop]: Abstraction has 2292 states and 3970 transitions. [2020-11-12 03:32:34,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:34,925 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 3970 transitions. [2020-11-12 03:32:34,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:32:34,928 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:34,928 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:35,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2020-11-12 03:32:35,129 INFO L429 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:35,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:35,130 INFO L82 PathProgramCache]: Analyzing trace with hash 793287764, now seen corresponding path program 125 times [2020-11-12 03:32:35,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:35,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580669292] [2020-11-12 03:32:35,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:35,633 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:35,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580669292] [2020-11-12 03:32:35,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107628296] [2020-11-12 03:32:35,634 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:35,725 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-11-12 03:32:35,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:35,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 03:32:35,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:35,770 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:32:35,829 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:35,843 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:35,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:35,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-11-12 03:32:35,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890432986] [2020-11-12 03:32:35,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:32:35,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:35,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:32:35,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:32:35,845 INFO L87 Difference]: Start difference. First operand 2292 states and 3970 transitions. Second operand has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:37,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:37,567 INFO L93 Difference]: Finished difference Result 3364 states and 6045 transitions. [2020-11-12 03:32:37,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-12 03:32:37,568 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:32:37,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:37,571 INFO L225 Difference]: With dead ends: 3364 [2020-11-12 03:32:37,571 INFO L226 Difference]: Without dead ends: 3094 [2020-11-12 03:32:37,572 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=667, Invalid=2089, Unknown=0, NotChecked=0, Total=2756 [2020-11-12 03:32:37,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3094 states. [2020-11-12 03:32:37,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3094 to 2292. [2020-11-12 03:32:37,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2292 states, 2228 states have (on average 1.781867145421903) internal successors, (3970), 2291 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:37,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 3970 transitions. [2020-11-12 03:32:37,626 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 3970 transitions. Word has length 106 [2020-11-12 03:32:37,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:37,626 INFO L481 AbstractCegarLoop]: Abstraction has 2292 states and 3970 transitions. [2020-11-12 03:32:37,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:37,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 3970 transitions. [2020-11-12 03:32:37,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:32:37,629 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:37,629 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:37,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:37,830 INFO L429 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:37,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:37,831 INFO L82 PathProgramCache]: Analyzing trace with hash -188062734, now seen corresponding path program 126 times [2020-11-12 03:32:37,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:37,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70363961] [2020-11-12 03:32:37,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:37,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:38,217 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:38,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70363961] [2020-11-12 03:32:38,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941500694] [2020-11-12 03:32:38,219 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:38,326 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-11-12 03:32:38,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:38,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 03:32:38,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:38,399 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:38,413 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:38,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:38,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-11-12 03:32:38,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466686557] [2020-11-12 03:32:38,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:32:38,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:38,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:32:38,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:32:38,415 INFO L87 Difference]: Start difference. First operand 2292 states and 3970 transitions. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:39,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:39,714 INFO L93 Difference]: Finished difference Result 3314 states and 5945 transitions. [2020-11-12 03:32:39,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 03:32:39,715 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:32:39,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:39,720 INFO L225 Difference]: With dead ends: 3314 [2020-11-12 03:32:39,720 INFO L226 Difference]: Without dead ends: 3044 [2020-11-12 03:32:39,721 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=646, Invalid=1904, Unknown=0, NotChecked=0, Total=2550 [2020-11-12 03:32:39,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3044 states. [2020-11-12 03:32:39,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3044 to 2292. [2020-11-12 03:32:39,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2292 states, 2228 states have (on average 1.781867145421903) internal successors, (3970), 2291 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:39,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 3970 transitions. [2020-11-12 03:32:39,752 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 3970 transitions. Word has length 106 [2020-11-12 03:32:39,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:39,752 INFO L481 AbstractCegarLoop]: Abstraction has 2292 states and 3970 transitions. [2020-11-12 03:32:39,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:39,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 3970 transitions. [2020-11-12 03:32:39,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:32:39,755 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:39,755 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:39,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2020-11-12 03:32:39,956 INFO L429 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:39,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:39,957 INFO L82 PathProgramCache]: Analyzing trace with hash -852147406, now seen corresponding path program 127 times [2020-11-12 03:32:39,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:39,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079207270] [2020-11-12 03:32:39,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:40,364 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:40,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079207270] [2020-11-12 03:32:40,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625672616] [2020-11-12 03:32:40,365 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:40,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 03:32:40,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:40,490 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:32:40,569 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:40,583 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:40,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:40,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-11-12 03:32:40,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399208114] [2020-11-12 03:32:40,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:32:40,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:40,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:32:40,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:32:40,585 INFO L87 Difference]: Start difference. First operand 2292 states and 3970 transitions. Second operand has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:42,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:42,300 INFO L93 Difference]: Finished difference Result 3264 states and 5845 transitions. [2020-11-12 03:32:42,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-12 03:32:42,302 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:32:42,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:42,306 INFO L225 Difference]: With dead ends: 3264 [2020-11-12 03:32:42,307 INFO L226 Difference]: Without dead ends: 2994 [2020-11-12 03:32:42,307 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=747, Invalid=2223, Unknown=0, NotChecked=0, Total=2970 [2020-11-12 03:32:42,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2020-11-12 03:32:42,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 2292. [2020-11-12 03:32:42,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2292 states, 2228 states have (on average 1.781867145421903) internal successors, (3970), 2291 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:42,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 3970 transitions. [2020-11-12 03:32:42,340 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 3970 transitions. Word has length 106 [2020-11-12 03:32:42,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:42,340 INFO L481 AbstractCegarLoop]: Abstraction has 2292 states and 3970 transitions. [2020-11-12 03:32:42,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:42,340 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 3970 transitions. [2020-11-12 03:32:42,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:32:42,343 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:42,343 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:42,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2020-11-12 03:32:42,544 INFO L429 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:42,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:42,545 INFO L82 PathProgramCache]: Analyzing trace with hash -553625520, now seen corresponding path program 128 times [2020-11-12 03:32:42,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:42,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874910604] [2020-11-12 03:32:42,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:42,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:42,914 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:42,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874910604] [2020-11-12 03:32:42,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421289741] [2020-11-12 03:32:42,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:43,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:32:43,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:43,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 03:32:43,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:43,062 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:43,074 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:43,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:43,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-11-12 03:32:43,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822287447] [2020-11-12 03:32:43,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:32:43,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:43,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:32:43,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:32:43,075 INFO L87 Difference]: Start difference. First operand 2292 states and 3970 transitions. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:44,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:44,492 INFO L93 Difference]: Finished difference Result 3214 states and 5745 transitions. [2020-11-12 03:32:44,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 03:32:44,493 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:32:44,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:44,496 INFO L225 Difference]: With dead ends: 3214 [2020-11-12 03:32:44,497 INFO L226 Difference]: Without dead ends: 2944 [2020-11-12 03:32:44,497 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=734, Invalid=2022, Unknown=0, NotChecked=0, Total=2756 [2020-11-12 03:32:44,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-11-12 03:32:44,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 2292. [2020-11-12 03:32:44,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2292 states, 2228 states have (on average 1.781867145421903) internal successors, (3970), 2291 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:44,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 3970 transitions. [2020-11-12 03:32:44,528 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 3970 transitions. Word has length 106 [2020-11-12 03:32:44,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:44,529 INFO L481 AbstractCegarLoop]: Abstraction has 2292 states and 3970 transitions. [2020-11-12 03:32:44,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:44,529 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 3970 transitions. [2020-11-12 03:32:44,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:32:44,531 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:44,531 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:44,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2020-11-12 03:32:44,731 INFO L429 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:44,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:44,732 INFO L82 PathProgramCache]: Analyzing trace with hash 2120042384, now seen corresponding path program 129 times [2020-11-12 03:32:44,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:44,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602144150] [2020-11-12 03:32:44,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:44,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:45,123 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:45,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602144150] [2020-11-12 03:32:45,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396660922] [2020-11-12 03:32:45,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:45,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-11-12 03:32:45,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:45,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 03:32:45,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:45,267 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:32:45,349 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:45,373 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:45,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:45,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-11-12 03:32:45,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362285633] [2020-11-12 03:32:45,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:32:45,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:45,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:32:45,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:32:45,376 INFO L87 Difference]: Start difference. First operand 2292 states and 3970 transitions. Second operand has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:47,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:47,598 INFO L93 Difference]: Finished difference Result 3229 states and 5762 transitions. [2020-11-12 03:32:47,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-11-12 03:32:47,599 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:32:47,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:47,605 INFO L225 Difference]: With dead ends: 3229 [2020-11-12 03:32:47,605 INFO L226 Difference]: Without dead ends: 2959 [2020-11-12 03:32:47,605 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=843, Invalid=2349, Unknown=0, NotChecked=0, Total=3192 [2020-11-12 03:32:47,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2020-11-12 03:32:47,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 2312. [2020-11-12 03:32:47,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2312 states, 2248 states have (on average 1.7860320284697508) internal successors, (4015), 2311 states have internal predecessors, (4015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:47,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 4015 transitions. [2020-11-12 03:32:47,645 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 4015 transitions. Word has length 106 [2020-11-12 03:32:47,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:47,646 INFO L481 AbstractCegarLoop]: Abstraction has 2312 states and 4015 transitions. [2020-11-12 03:32:47,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:47,646 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 4015 transitions. [2020-11-12 03:32:47,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:32:47,648 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:47,648 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:47,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:47,849 INFO L429 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:47,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:47,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1040834748, now seen corresponding path program 130 times [2020-11-12 03:32:47,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:47,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140674153] [2020-11-12 03:32:47,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:48,278 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:48,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140674153] [2020-11-12 03:32:48,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827781134] [2020-11-12 03:32:48,279 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:48,369 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:32:48,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:48,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:32:48,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:48,446 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:48,459 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:48,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:48,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-11-12 03:32:48,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098707404] [2020-11-12 03:32:48,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:32:48,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:48,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:32:48,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:32:48,461 INFO L87 Difference]: Start difference. First operand 2312 states and 4015 transitions. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:50,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:50,121 INFO L93 Difference]: Finished difference Result 4291 states and 7199 transitions. [2020-11-12 03:32:50,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 03:32:50,122 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:32:50,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:50,128 INFO L225 Difference]: With dead ends: 4291 [2020-11-12 03:32:50,128 INFO L226 Difference]: Without dead ends: 4006 [2020-11-12 03:32:50,129 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 754 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=839, Invalid=2131, Unknown=0, NotChecked=0, Total=2970 [2020-11-12 03:32:50,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4006 states. [2020-11-12 03:32:50,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4006 to 2397. [2020-11-12 03:32:50,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2397 states, 2333 states have (on average 1.8058294042006) internal successors, (4213), 2396 states have internal predecessors, (4213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:50,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2397 states to 2397 states and 4213 transitions. [2020-11-12 03:32:50,171 INFO L78 Accepts]: Start accepts. Automaton has 2397 states and 4213 transitions. Word has length 106 [2020-11-12 03:32:50,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:50,171 INFO L481 AbstractCegarLoop]: Abstraction has 2397 states and 4213 transitions. [2020-11-12 03:32:50,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:50,171 INFO L276 IsEmpty]: Start isEmpty. Operand 2397 states and 4213 transitions. [2020-11-12 03:32:50,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 03:32:50,174 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:50,174 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:50,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,136 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:50,379 INFO L429 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:50,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:50,379 INFO L82 PathProgramCache]: Analyzing trace with hash -200857556, now seen corresponding path program 131 times [2020-11-12 03:32:50,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:50,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020817779] [2020-11-12 03:32:50,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:50,776 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:50,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020817779] [2020-11-12 03:32:50,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985166421] [2020-11-12 03:32:50,777 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:50,868 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-11-12 03:32:50,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:50,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 03:32:50,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:50,904 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:32:50,928 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:50,940 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:50,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:50,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-11-12 03:32:50,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435826480] [2020-11-12 03:32:50,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:32:50,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:50,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:32:50,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:32:50,942 INFO L87 Difference]: Start difference. First operand 2397 states and 4213 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:52,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:52,830 INFO L93 Difference]: Finished difference Result 3290 states and 5819 transitions. [2020-11-12 03:32:52,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 03:32:52,831 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 03:32:52,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:52,834 INFO L225 Difference]: With dead ends: 3290 [2020-11-12 03:32:52,834 INFO L226 Difference]: Without dead ends: 2894 [2020-11-12 03:32:52,835 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 835 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=935, Invalid=2371, Unknown=0, NotChecked=0, Total=3306 [2020-11-12 03:32:52,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2020-11-12 03:32:52,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1962. [2020-11-12 03:32:52,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1898 states have (on average 1.7249736564805058) internal successors, (3274), 1961 states have internal predecessors, (3274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:52,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 3274 transitions. [2020-11-12 03:32:52,863 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 3274 transitions. Word has length 106 [2020-11-12 03:32:52,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:52,863 INFO L481 AbstractCegarLoop]: Abstraction has 1962 states and 3274 transitions. [2020-11-12 03:32:52,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:52,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 3274 transitions. [2020-11-12 03:32:52,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 03:32:52,865 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:52,865 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:53,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:53,066 INFO L429 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:53,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:53,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1748798891, now seen corresponding path program 132 times [2020-11-12 03:32:53,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:53,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545174715] [2020-11-12 03:32:53,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:53,566 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:53,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545174715] [2020-11-12 03:32:53,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376815864] [2020-11-12 03:32:53,566 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:53,684 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-11-12 03:32:53,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:53,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 03:32:53,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:53,704 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:53,723 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:53,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:53,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-11-12 03:32:53,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666656703] [2020-11-12 03:32:53,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:32:53,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:53,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:32:53,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:32:53,725 INFO L87 Difference]: Start difference. First operand 1962 states and 3274 transitions. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:54,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:54,706 INFO L93 Difference]: Finished difference Result 3159 states and 5604 transitions. [2020-11-12 03:32:54,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-12 03:32:54,707 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 03:32:54,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:54,710 INFO L225 Difference]: With dead ends: 3159 [2020-11-12 03:32:54,710 INFO L226 Difference]: Without dead ends: 2889 [2020-11-12 03:32:54,711 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=479, Invalid=1413, Unknown=0, NotChecked=0, Total=1892 [2020-11-12 03:32:54,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2889 states. [2020-11-12 03:32:54,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2889 to 2002. [2020-11-12 03:32:54,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2002 states, 1938 states have (on average 1.7254901960784315) internal successors, (3344), 2001 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:54,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 3344 transitions. [2020-11-12 03:32:54,744 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 3344 transitions. Word has length 111 [2020-11-12 03:32:54,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:54,744 INFO L481 AbstractCegarLoop]: Abstraction has 2002 states and 3344 transitions. [2020-11-12 03:32:54,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:54,744 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 3344 transitions. [2020-11-12 03:32:54,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 03:32:54,747 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:54,747 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:54,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable142 [2020-11-12 03:32:54,948 INFO L429 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:54,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:54,948 INFO L82 PathProgramCache]: Analyzing trace with hash -748682859, now seen corresponding path program 133 times [2020-11-12 03:32:54,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:54,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80638477] [2020-11-12 03:32:54,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:55,461 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:55,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80638477] [2020-11-12 03:32:55,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352130969] [2020-11-12 03:32:55,462 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:55,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 03:32:55,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:55,587 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:32:55,606 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:55,624 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:55,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:55,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-11-12 03:32:55,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157255255] [2020-11-12 03:32:55,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:32:55,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:55,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:32:55,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:32:55,625 INFO L87 Difference]: Start difference. First operand 2002 states and 3344 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:56,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:56,747 INFO L93 Difference]: Finished difference Result 3544 states and 6354 transitions. [2020-11-12 03:32:56,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-12 03:32:56,748 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 03:32:56,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:56,752 INFO L225 Difference]: With dead ends: 3544 [2020-11-12 03:32:56,752 INFO L226 Difference]: Without dead ends: 3274 [2020-11-12 03:32:56,753 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=529, Invalid=1633, Unknown=0, NotChecked=0, Total=2162 [2020-11-12 03:32:56,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2020-11-12 03:32:56,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 2027. [2020-11-12 03:32:56,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2027 states, 1963 states have (on average 1.7315333672949567) internal successors, (3399), 2026 states have internal predecessors, (3399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:56,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 3399 transitions. [2020-11-12 03:32:56,783 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 3399 transitions. Word has length 111 [2020-11-12 03:32:56,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:56,783 INFO L481 AbstractCegarLoop]: Abstraction has 2027 states and 3399 transitions. [2020-11-12 03:32:56,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:56,783 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 3399 transitions. [2020-11-12 03:32:56,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 03:32:56,785 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:56,785 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:56,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,139 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:56,986 INFO L429 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:56,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:56,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1876339917, now seen corresponding path program 134 times [2020-11-12 03:32:56,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:56,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167196006] [2020-11-12 03:32:56,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:57,441 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:57,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167196006] [2020-11-12 03:32:57,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397198072] [2020-11-12 03:32:57,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:57,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:32:57,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:57,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 03:32:57,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:57,551 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:57,568 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:57,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:57,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-11-12 03:32:57,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536062024] [2020-11-12 03:32:57,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:32:57,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:57,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:32:57,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:32:57,569 INFO L87 Difference]: Start difference. First operand 2027 states and 3399 transitions. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:58,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:32:58,691 INFO L93 Difference]: Finished difference Result 3559 states and 6364 transitions. [2020-11-12 03:32:58,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-12 03:32:58,693 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 03:32:58,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:32:58,697 INFO L225 Difference]: With dead ends: 3559 [2020-11-12 03:32:58,698 INFO L226 Difference]: Without dead ends: 3289 [2020-11-12 03:32:58,698 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=531, Invalid=1631, Unknown=0, NotChecked=0, Total=2162 [2020-11-12 03:32:58,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2020-11-12 03:32:58,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 2052. [2020-11-12 03:32:58,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 1988 states have (on average 1.7374245472837022) internal successors, (3454), 2051 states have internal predecessors, (3454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:58,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 3454 transitions. [2020-11-12 03:32:58,740 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 3454 transitions. Word has length 111 [2020-11-12 03:32:58,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:32:58,741 INFO L481 AbstractCegarLoop]: Abstraction has 2052 states and 3454 transitions. [2020-11-12 03:32:58,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:32:58,741 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 3454 transitions. [2020-11-12 03:32:58,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 03:32:58,743 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:32:58,743 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:32:58,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2020-11-12 03:32:58,944 INFO L429 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:32:58,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:32:58,945 INFO L82 PathProgramCache]: Analyzing trace with hash -468454797, now seen corresponding path program 135 times [2020-11-12 03:32:58,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:32:58,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920289543] [2020-11-12 03:32:58,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:32:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:32:59,535 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:59,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920289543] [2020-11-12 03:32:59,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965048622] [2020-11-12 03:32:59,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:32:59,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-12 03:32:59,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:32:59,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 03:32:59,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:32:59,687 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:32:59,709 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:32:59,734 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:32:59,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:32:59,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-11-12 03:32:59,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019051962] [2020-11-12 03:32:59,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:32:59,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:32:59,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:32:59,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:32:59,735 INFO L87 Difference]: Start difference. First operand 2052 states and 3454 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:01,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:01,118 INFO L93 Difference]: Finished difference Result 3559 states and 6344 transitions. [2020-11-12 03:33:01,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-12 03:33:01,119 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 03:33:01,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:01,126 INFO L225 Difference]: With dead ends: 3559 [2020-11-12 03:33:01,126 INFO L226 Difference]: Without dead ends: 3289 [2020-11-12 03:33:01,127 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=553, Invalid=1799, Unknown=0, NotChecked=0, Total=2352 [2020-11-12 03:33:01,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2020-11-12 03:33:01,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 2077. [2020-11-12 03:33:01,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2077 states, 2013 states have (on average 1.7431693989071038) internal successors, (3509), 2076 states have internal predecessors, (3509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:01,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 3509 transitions. [2020-11-12 03:33:01,168 INFO L78 Accepts]: Start accepts. Automaton has 2077 states and 3509 transitions. Word has length 111 [2020-11-12 03:33:01,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:01,168 INFO L481 AbstractCegarLoop]: Abstraction has 2077 states and 3509 transitions. [2020-11-12 03:33:01,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:01,169 INFO L276 IsEmpty]: Start isEmpty. Operand 2077 states and 3509 transitions. [2020-11-12 03:33:01,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 03:33:01,171 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:01,171 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:01,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145,141 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:01,372 INFO L429 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:01,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:01,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1389686383, now seen corresponding path program 136 times [2020-11-12 03:33:01,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:01,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511710182] [2020-11-12 03:33:01,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:01,871 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:01,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511710182] [2020-11-12 03:33:01,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333237186] [2020-11-12 03:33:01,871 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:01,963 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:33:01,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:01,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:33:01,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:01,990 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:02,020 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:02,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:02,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-11-12 03:33:02,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154963277] [2020-11-12 03:33:02,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:33:02,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:02,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:33:02,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:33:02,022 INFO L87 Difference]: Start difference. First operand 2077 states and 3509 transitions. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:03,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:03,218 INFO L93 Difference]: Finished difference Result 3559 states and 6324 transitions. [2020-11-12 03:33:03,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-12 03:33:03,219 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 03:33:03,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:03,223 INFO L225 Difference]: With dead ends: 3559 [2020-11-12 03:33:03,223 INFO L226 Difference]: Without dead ends: 3289 [2020-11-12 03:33:03,223 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=569, Invalid=1783, Unknown=0, NotChecked=0, Total=2352 [2020-11-12 03:33:03,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2020-11-12 03:33:03,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 2102. [2020-11-12 03:33:03,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2102 states, 2038 states have (on average 1.7487733071638862) internal successors, (3564), 2101 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:03,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2102 states to 2102 states and 3564 transitions. [2020-11-12 03:33:03,256 INFO L78 Accepts]: Start accepts. Automaton has 2102 states and 3564 transitions. Word has length 111 [2020-11-12 03:33:03,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:03,256 INFO L481 AbstractCegarLoop]: Abstraction has 2102 states and 3564 transitions. [2020-11-12 03:33:03,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:03,256 INFO L276 IsEmpty]: Start isEmpty. Operand 2102 states and 3564 transitions. [2020-11-12 03:33:03,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 03:33:03,258 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:03,258 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:03,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2020-11-12 03:33:03,458 INFO L429 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:03,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:03,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1891090641, now seen corresponding path program 137 times [2020-11-12 03:33:03,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:03,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904103473] [2020-11-12 03:33:03,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:04,121 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:04,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904103473] [2020-11-12 03:33:04,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544994966] [2020-11-12 03:33:04,122 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:04,228 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-11-12 03:33:04,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:04,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 03:33:04,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:04,277 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:33:04,303 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:04,331 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:04,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:04,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-11-12 03:33:04,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475202506] [2020-11-12 03:33:04,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:33:04,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:04,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:33:04,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:33:04,333 INFO L87 Difference]: Start difference. First operand 2102 states and 3564 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:05,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:05,768 INFO L93 Difference]: Finished difference Result 3559 states and 6304 transitions. [2020-11-12 03:33:05,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-12 03:33:05,770 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 03:33:05,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:05,776 INFO L225 Difference]: With dead ends: 3559 [2020-11-12 03:33:05,776 INFO L226 Difference]: Without dead ends: 3289 [2020-11-12 03:33:05,776 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=593, Invalid=1957, Unknown=0, NotChecked=0, Total=2550 [2020-11-12 03:33:05,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2020-11-12 03:33:05,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 2127. [2020-11-12 03:33:05,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2127 states, 2063 states have (on average 1.754241396025206) internal successors, (3619), 2126 states have internal predecessors, (3619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:05,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2127 states to 2127 states and 3619 transitions. [2020-11-12 03:33:05,831 INFO L78 Accepts]: Start accepts. Automaton has 2127 states and 3619 transitions. Word has length 111 [2020-11-12 03:33:05,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:05,831 INFO L481 AbstractCegarLoop]: Abstraction has 2127 states and 3619 transitions. [2020-11-12 03:33:05,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:05,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2127 states and 3619 transitions. [2020-11-12 03:33:05,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 03:33:05,834 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:05,834 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:06,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2020-11-12 03:33:06,035 INFO L429 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:06,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:06,036 INFO L82 PathProgramCache]: Analyzing trace with hash 418876783, now seen corresponding path program 138 times [2020-11-12 03:33:06,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:06,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395543731] [2020-11-12 03:33:06,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:06,486 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:06,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395543731] [2020-11-12 03:33:06,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461327282] [2020-11-12 03:33:06,487 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:06,587 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-11-12 03:33:06,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:06,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 03:33:06,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:06,622 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:06,640 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:06,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:06,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-11-12 03:33:06,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780724280] [2020-11-12 03:33:06,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:33:06,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:06,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:33:06,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:33:06,641 INFO L87 Difference]: Start difference. First operand 2127 states and 3619 transitions. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:07,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:07,969 INFO L93 Difference]: Finished difference Result 3559 states and 6284 transitions. [2020-11-12 03:33:07,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 03:33:07,971 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 03:33:07,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:07,976 INFO L225 Difference]: With dead ends: 3559 [2020-11-12 03:33:07,976 INFO L226 Difference]: Without dead ends: 3289 [2020-11-12 03:33:07,977 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=623, Invalid=1927, Unknown=0, NotChecked=0, Total=2550 [2020-11-12 03:33:07,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2020-11-12 03:33:08,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 2152. [2020-11-12 03:33:08,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2152 states, 2088 states have (on average 1.7595785440613028) internal successors, (3674), 2151 states have internal predecessors, (3674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:08,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2152 states to 2152 states and 3674 transitions. [2020-11-12 03:33:08,014 INFO L78 Accepts]: Start accepts. Automaton has 2152 states and 3674 transitions. Word has length 111 [2020-11-12 03:33:08,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:08,014 INFO L481 AbstractCegarLoop]: Abstraction has 2152 states and 3674 transitions. [2020-11-12 03:33:08,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:08,015 INFO L276 IsEmpty]: Start isEmpty. Operand 2152 states and 3674 transitions. [2020-11-12 03:33:08,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 03:33:08,017 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:08,017 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:08,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148,144 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:08,223 INFO L429 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:08,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:08,224 INFO L82 PathProgramCache]: Analyzing trace with hash -59093841, now seen corresponding path program 139 times [2020-11-12 03:33:08,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:08,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35883523] [2020-11-12 03:33:08,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:08,700 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:08,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35883523] [2020-11-12 03:33:08,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800017388] [2020-11-12 03:33:08,701 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:08,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 03:33:08,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:08,847 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:33:08,871 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:08,890 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:08,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:08,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-11-12 03:33:08,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178405716] [2020-11-12 03:33:08,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:33:08,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:08,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:33:08,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:33:08,891 INFO L87 Difference]: Start difference. First operand 2152 states and 3674 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:10,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:10,589 INFO L93 Difference]: Finished difference Result 3559 states and 6264 transitions. [2020-11-12 03:33:10,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-12 03:33:10,590 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 03:33:10,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:10,596 INFO L225 Difference]: With dead ends: 3559 [2020-11-12 03:33:10,596 INFO L226 Difference]: Without dead ends: 3289 [2020-11-12 03:33:10,597 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=649, Invalid=2107, Unknown=0, NotChecked=0, Total=2756 [2020-11-12 03:33:10,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2020-11-12 03:33:10,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 2177. [2020-11-12 03:33:10,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2177 states, 2113 states have (on average 1.7647893989588264) internal successors, (3729), 2176 states have internal predecessors, (3729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:10,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2177 states to 2177 states and 3729 transitions. [2020-11-12 03:33:10,641 INFO L78 Accepts]: Start accepts. Automaton has 2177 states and 3729 transitions. Word has length 111 [2020-11-12 03:33:10,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:10,641 INFO L481 AbstractCegarLoop]: Abstraction has 2177 states and 3729 transitions. [2020-11-12 03:33:10,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:10,642 INFO L276 IsEmpty]: Start isEmpty. Operand 2177 states and 3729 transitions. [2020-11-12 03:33:10,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 03:33:10,644 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:10,644 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:10,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2020-11-12 03:33:10,846 INFO L429 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:10,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:10,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1087743693, now seen corresponding path program 140 times [2020-11-12 03:33:10,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:10,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043764668] [2020-11-12 03:33:10,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:11,346 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:11,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043764668] [2020-11-12 03:33:11,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311562867] [2020-11-12 03:33:11,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:11,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:33:11,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:11,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 03:33:11,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:11,479 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:11,496 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:11,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:11,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-11-12 03:33:11,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061342441] [2020-11-12 03:33:11,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:33:11,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:11,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:33:11,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:33:11,498 INFO L87 Difference]: Start difference. First operand 2177 states and 3729 transitions. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:13,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:13,132 INFO L93 Difference]: Finished difference Result 3559 states and 6244 transitions. [2020-11-12 03:33:13,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 03:33:13,134 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 03:33:13,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:13,141 INFO L225 Difference]: With dead ends: 3559 [2020-11-12 03:33:13,142 INFO L226 Difference]: Without dead ends: 3289 [2020-11-12 03:33:13,142 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=693, Invalid=2063, Unknown=0, NotChecked=0, Total=2756 [2020-11-12 03:33:13,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2020-11-12 03:33:13,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 2202. [2020-11-12 03:33:13,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2202 states, 2138 states have (on average 1.7698783910196445) internal successors, (3784), 2201 states have internal predecessors, (3784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:13,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2202 states to 2202 states and 3784 transitions. [2020-11-12 03:33:13,185 INFO L78 Accepts]: Start accepts. Automaton has 2202 states and 3784 transitions. Word has length 111 [2020-11-12 03:33:13,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:13,185 INFO L481 AbstractCegarLoop]: Abstraction has 2202 states and 3784 transitions. [2020-11-12 03:33:13,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:13,186 INFO L276 IsEmpty]: Start isEmpty. Operand 2202 states and 3784 transitions. [2020-11-12 03:33:13,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 03:33:13,188 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:13,189 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:13,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,146 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:13,390 INFO L429 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:13,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:13,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1918732787, now seen corresponding path program 141 times [2020-11-12 03:33:13,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:13,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826675466] [2020-11-12 03:33:13,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:13,881 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:13,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826675466] [2020-11-12 03:33:13,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372389711] [2020-11-12 03:33:13,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:13,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-11-12 03:33:13,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:13,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 03:33:13,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:14,033 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:33:14,060 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:14,075 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:14,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:14,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-11-12 03:33:14,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140793810] [2020-11-12 03:33:14,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:33:14,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:14,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:33:14,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:33:14,077 INFO L87 Difference]: Start difference. First operand 2202 states and 3784 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:16,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:16,036 INFO L93 Difference]: Finished difference Result 3559 states and 6224 transitions. [2020-11-12 03:33:16,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-12 03:33:16,038 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 03:33:16,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:16,044 INFO L225 Difference]: With dead ends: 3559 [2020-11-12 03:33:16,044 INFO L226 Difference]: Without dead ends: 3289 [2020-11-12 03:33:16,045 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=721, Invalid=2249, Unknown=0, NotChecked=0, Total=2970 [2020-11-12 03:33:16,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2020-11-12 03:33:16,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 2227. [2020-11-12 03:33:16,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2227 states, 2163 states have (on average 1.7748497457235322) internal successors, (3839), 2226 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:16,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2227 states to 2227 states and 3839 transitions. [2020-11-12 03:33:16,087 INFO L78 Accepts]: Start accepts. Automaton has 2227 states and 3839 transitions. Word has length 111 [2020-11-12 03:33:16,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:16,088 INFO L481 AbstractCegarLoop]: Abstraction has 2227 states and 3839 transitions. [2020-11-12 03:33:16,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:16,088 INFO L276 IsEmpty]: Start isEmpty. Operand 2227 states and 3839 transitions. [2020-11-12 03:33:16,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 03:33:16,091 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:16,091 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:16,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,147 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:16,294 INFO L429 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:16,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:16,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1394884011, now seen corresponding path program 142 times [2020-11-12 03:33:16,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:16,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029324694] [2020-11-12 03:33:16,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:16,744 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:16,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029324694] [2020-11-12 03:33:16,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960216569] [2020-11-12 03:33:16,744 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:16,835 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:33:16,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:16,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:33:16,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:16,881 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:16,899 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:16,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:16,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-11-12 03:33:16,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419387166] [2020-11-12 03:33:16,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:33:16,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:16,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:33:16,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:33:16,901 INFO L87 Difference]: Start difference. First operand 2227 states and 3839 transitions. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:18,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:18,395 INFO L93 Difference]: Finished difference Result 3559 states and 6204 transitions. [2020-11-12 03:33:18,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 03:33:18,396 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 03:33:18,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:18,402 INFO L225 Difference]: With dead ends: 3559 [2020-11-12 03:33:18,402 INFO L226 Difference]: Without dead ends: 3289 [2020-11-12 03:33:18,403 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=779, Invalid=2191, Unknown=0, NotChecked=0, Total=2970 [2020-11-12 03:33:18,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2020-11-12 03:33:18,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 2252. [2020-11-12 03:33:18,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2252 states, 2188 states have (on average 1.7797074954296161) internal successors, (3894), 2251 states have internal predecessors, (3894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:18,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 3894 transitions. [2020-11-12 03:33:18,438 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 3894 transitions. Word has length 111 [2020-11-12 03:33:18,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:18,438 INFO L481 AbstractCegarLoop]: Abstraction has 2252 states and 3894 transitions. [2020-11-12 03:33:18,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:18,438 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 3894 transitions. [2020-11-12 03:33:18,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 03:33:18,440 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:18,440 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:18,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:18,641 INFO L429 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:18,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:18,642 INFO L82 PathProgramCache]: Analyzing trace with hash 730799339, now seen corresponding path program 143 times [2020-11-12 03:33:18,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:18,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578151477] [2020-11-12 03:33:18,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:19,116 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:19,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578151477] [2020-11-12 03:33:19,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799864756] [2020-11-12 03:33:19,117 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:19,212 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-11-12 03:33:19,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:19,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 03:33:19,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:19,258 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:33:19,286 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:19,301 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:19,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:19,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-11-12 03:33:19,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808990555] [2020-11-12 03:33:19,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:33:19,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:19,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:33:19,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:33:19,303 INFO L87 Difference]: Start difference. First operand 2252 states and 3894 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:21,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:21,150 INFO L93 Difference]: Finished difference Result 3559 states and 6184 transitions. [2020-11-12 03:33:21,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-11-12 03:33:21,150 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 03:33:21,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:21,156 INFO L225 Difference]: With dead ends: 3559 [2020-11-12 03:33:21,156 INFO L226 Difference]: Without dead ends: 3289 [2020-11-12 03:33:21,156 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=809, Invalid=2383, Unknown=0, NotChecked=0, Total=3192 [2020-11-12 03:33:21,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2020-11-12 03:33:21,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 2277. [2020-11-12 03:33:21,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2277 states, 2213 states have (on average 1.7844554902846814) internal successors, (3949), 2276 states have internal predecessors, (3949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:21,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 3949 transitions. [2020-11-12 03:33:21,193 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 3949 transitions. Word has length 111 [2020-11-12 03:33:21,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:21,193 INFO L481 AbstractCegarLoop]: Abstraction has 2277 states and 3949 transitions. [2020-11-12 03:33:21,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:21,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 3949 transitions. [2020-11-12 03:33:21,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 03:33:21,196 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:21,196 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:21,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,149 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:21,396 INFO L429 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:21,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:21,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1029321225, now seen corresponding path program 144 times [2020-11-12 03:33:21,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:21,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416966329] [2020-11-12 03:33:21,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:21,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:21,818 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:21,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416966329] [2020-11-12 03:33:21,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096490378] [2020-11-12 03:33:21,819 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:21,934 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-11-12 03:33:21,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:21,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 03:33:21,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:21,965 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:21,978 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:21,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:21,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-11-12 03:33:21,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373520821] [2020-11-12 03:33:21,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:33:21,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:21,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:33:21,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:33:21,980 INFO L87 Difference]: Start difference. First operand 2277 states and 3949 transitions. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:23,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:23,608 INFO L93 Difference]: Finished difference Result 3559 states and 6164 transitions. [2020-11-12 03:33:23,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 03:33:23,609 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 03:33:23,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:23,615 INFO L225 Difference]: With dead ends: 3559 [2020-11-12 03:33:23,615 INFO L226 Difference]: Without dead ends: 3289 [2020-11-12 03:33:23,616 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=881, Invalid=2311, Unknown=0, NotChecked=0, Total=3192 [2020-11-12 03:33:23,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2020-11-12 03:33:23,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 2302. [2020-11-12 03:33:23,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2302 states, 2238 states have (on average 1.7890974084003575) internal successors, (4004), 2301 states have internal predecessors, (4004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:23,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 4004 transitions. [2020-11-12 03:33:23,650 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 4004 transitions. Word has length 111 [2020-11-12 03:33:23,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:23,650 INFO L481 AbstractCegarLoop]: Abstraction has 2302 states and 4004 transitions. [2020-11-12 03:33:23,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:23,650 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 4004 transitions. [2020-11-12 03:33:23,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 03:33:23,652 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:23,652 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:23,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable154 [2020-11-12 03:33:23,853 INFO L429 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:23,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:23,854 INFO L82 PathProgramCache]: Analyzing trace with hash -591978167, now seen corresponding path program 145 times [2020-11-12 03:33:23,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:23,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874649156] [2020-11-12 03:33:23,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:24,281 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:24,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874649156] [2020-11-12 03:33:24,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921733220] [2020-11-12 03:33:24,281 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:24,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 03:33:24,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:24,409 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:33:24,432 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:24,445 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:24,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:24,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-11-12 03:33:24,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254651226] [2020-11-12 03:33:24,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:33:24,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:24,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:33:24,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:33:24,446 INFO L87 Difference]: Start difference. First operand 2302 states and 4004 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:26,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:26,726 INFO L93 Difference]: Finished difference Result 3604 states and 6222 transitions. [2020-11-12 03:33:26,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-11-12 03:33:26,726 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 03:33:26,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:26,731 INFO L225 Difference]: With dead ends: 3604 [2020-11-12 03:33:26,731 INFO L226 Difference]: Without dead ends: 3334 [2020-11-12 03:33:26,731 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=913, Invalid=2509, Unknown=0, NotChecked=0, Total=3422 [2020-11-12 03:33:26,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3334 states. [2020-11-12 03:33:26,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3334 to 2327. [2020-11-12 03:33:26,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2327 states, 2263 states have (on average 1.7962881131241715) internal successors, (4065), 2326 states have internal predecessors, (4065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:26,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2327 states to 2327 states and 4065 transitions. [2020-11-12 03:33:26,765 INFO L78 Accepts]: Start accepts. Automaton has 2327 states and 4065 transitions. Word has length 111 [2020-11-12 03:33:26,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:26,765 INFO L481 AbstractCegarLoop]: Abstraction has 2327 states and 4065 transitions. [2020-11-12 03:33:26,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:26,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2327 states and 4065 transitions. [2020-11-12 03:33:26,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 03:33:26,768 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:26,769 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:26,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2020-11-12 03:33:26,970 INFO L429 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:26,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:26,970 INFO L82 PathProgramCache]: Analyzing trace with hash 542111997, now seen corresponding path program 146 times [2020-11-12 03:33:26,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:26,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473026090] [2020-11-12 03:33:26,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:27,551 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:27,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473026090] [2020-11-12 03:33:27,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379003427] [2020-11-12 03:33:27,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:27,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:33:27,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:27,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 03:33:27,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:27,719 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:27,742 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:27,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:27,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-11-12 03:33:27,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800548774] [2020-11-12 03:33:27,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 03:33:27,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:27,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 03:33:27,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2020-11-12 03:33:27,744 INFO L87 Difference]: Start difference. First operand 2327 states and 4065 transitions. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:29,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:29,675 INFO L93 Difference]: Finished difference Result 4666 states and 7634 transitions. [2020-11-12 03:33:29,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 03:33:29,677 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 03:33:29,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:29,684 INFO L225 Difference]: With dead ends: 4666 [2020-11-12 03:33:29,684 INFO L226 Difference]: Without dead ends: 4381 [2020-11-12 03:33:29,684 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1000, Invalid=2422, Unknown=0, NotChecked=0, Total=3422 [2020-11-12 03:33:29,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4381 states. [2020-11-12 03:33:29,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4381 to 2412. [2020-11-12 03:33:29,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2348 states have (on average 1.815587734241908) internal successors, (4263), 2411 states have internal predecessors, (4263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:29,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 4263 transitions. [2020-11-12 03:33:29,734 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 4263 transitions. Word has length 111 [2020-11-12 03:33:29,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:29,735 INFO L481 AbstractCegarLoop]: Abstraction has 2412 states and 4263 transitions. [2020-11-12 03:33:29,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:29,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 4263 transitions. [2020-11-12 03:33:29,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 03:33:29,738 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:29,738 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:29,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2020-11-12 03:33:29,939 INFO L429 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:29,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:29,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1382089189, now seen corresponding path program 147 times [2020-11-12 03:33:29,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:29,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274677437] [2020-11-12 03:33:29,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:30,424 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:30,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274677437] [2020-11-12 03:33:30,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117075162] [2020-11-12 03:33:30,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:30,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-11-12 03:33:30,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:30,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 03:33:30,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:30,583 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:33:30,615 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:30,629 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:30,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:30,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-11-12 03:33:30,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570016063] [2020-11-12 03:33:30,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:33:30,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:30,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:33:30,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:33:30,631 INFO L87 Difference]: Start difference. First operand 2412 states and 4263 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:32,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:32,785 INFO L93 Difference]: Finished difference Result 3665 states and 6229 transitions. [2020-11-12 03:33:32,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 03:33:32,786 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 03:33:32,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:32,791 INFO L225 Difference]: With dead ends: 3665 [2020-11-12 03:33:32,791 INFO L226 Difference]: Without dead ends: 3269 [2020-11-12 03:33:32,791 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1036, Invalid=2624, Unknown=0, NotChecked=0, Total=3660 [2020-11-12 03:33:32,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2020-11-12 03:33:32,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 1917. [2020-11-12 03:33:32,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1917 states, 1853 states have (on average 1.72369131138694) internal successors, (3194), 1916 states have internal predecessors, (3194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:32,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 3194 transitions. [2020-11-12 03:33:32,817 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 3194 transitions. Word has length 111 [2020-11-12 03:33:32,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:32,818 INFO L481 AbstractCegarLoop]: Abstraction has 1917 states and 3194 transitions. [2020-11-12 03:33:32,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:32,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 3194 transitions. [2020-11-12 03:33:32,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:33:32,819 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:32,819 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:33,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2020-11-12 03:33:33,020 INFO L429 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:33,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:33,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1035788687, now seen corresponding path program 148 times [2020-11-12 03:33:33,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:33,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738562759] [2020-11-12 03:33:33,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:33,574 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:33,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738562759] [2020-11-12 03:33:33,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051522061] [2020-11-12 03:33:33,575 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:33,678 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:33:33,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:33,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:33:33,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:33,768 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:33,785 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:33,829 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:33,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:33,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-11-12 03:33:33,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369365281] [2020-11-12 03:33:33,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:33:33,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:33,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:33:33,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:33:33,832 INFO L87 Difference]: Start difference. First operand 1917 states and 3194 transitions. Second operand has 26 states, 26 states have (on average 5.269230769230769) internal successors, (137), 26 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:35,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:35,378 INFO L93 Difference]: Finished difference Result 3125 states and 5338 transitions. [2020-11-12 03:33:35,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-12 03:33:35,379 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.269230769230769) internal successors, (137), 26 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 03:33:35,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:35,384 INFO L225 Difference]: With dead ends: 3125 [2020-11-12 03:33:35,384 INFO L226 Difference]: Without dead ends: 2791 [2020-11-12 03:33:35,385 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=645, Invalid=1805, Unknown=0, NotChecked=0, Total=2450 [2020-11-12 03:33:35,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2020-11-12 03:33:35,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 1992. [2020-11-12 03:33:35,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1992 states, 1928 states have (on average 1.7344398340248963) internal successors, (3344), 1991 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:35,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1992 states to 1992 states and 3344 transitions. [2020-11-12 03:33:35,420 INFO L78 Accepts]: Start accepts. Automaton has 1992 states and 3344 transitions. Word has length 116 [2020-11-12 03:33:35,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:35,420 INFO L481 AbstractCegarLoop]: Abstraction has 1992 states and 3344 transitions. [2020-11-12 03:33:35,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.269230769230769) internal successors, (137), 26 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:35,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1992 states and 3344 transitions. [2020-11-12 03:33:35,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:33:35,423 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:35,424 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:35,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 154 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2020-11-12 03:33:35,625 INFO L429 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:35,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:35,625 INFO L82 PathProgramCache]: Analyzing trace with hash -240438637, now seen corresponding path program 149 times [2020-11-12 03:33:35,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:35,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832133296] [2020-11-12 03:33:35,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:36,273 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:36,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832133296] [2020-11-12 03:33:36,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620072662] [2020-11-12 03:33:36,274 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:36,373 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2020-11-12 03:33:36,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:36,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:33:36,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:36,397 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:36,419 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:36,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:36,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-11-12 03:33:36,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854690507] [2020-11-12 03:33:36,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:33:36,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:36,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:33:36,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:33:36,420 INFO L87 Difference]: Start difference. First operand 1992 states and 3344 transitions. 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) [2020-11-12 03:33:37,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:37,478 INFO L93 Difference]: Finished difference Result 3754 states and 6794 transitions. [2020-11-12 03:33:37,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-12 03:33:37,480 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 [2020-11-12 03:33:37,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:37,486 INFO L225 Difference]: With dead ends: 3754 [2020-11-12 03:33:37,486 INFO L226 Difference]: Without dead ends: 3484 [2020-11-12 03:33:37,487 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=512, Invalid=1380, Unknown=0, NotChecked=0, Total=1892 [2020-11-12 03:33:37,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3484 states. [2020-11-12 03:33:37,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3484 to 2087. [2020-11-12 03:33:37,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2087 states, 2023 states have (on average 1.7320810677212062) internal successors, (3504), 2086 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:37,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2087 states to 2087 states and 3504 transitions. [2020-11-12 03:33:37,529 INFO L78 Accepts]: Start accepts. Automaton has 2087 states and 3504 transitions. Word has length 116 [2020-11-12 03:33:37,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:37,529 INFO L481 AbstractCegarLoop]: Abstraction has 2087 states and 3504 transitions. [2020-11-12 03:33:37,529 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) [2020-11-12 03:33:37,530 INFO L276 IsEmpty]: Start isEmpty. Operand 2087 states and 3504 transitions. [2020-11-12 03:33:37,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:33:37,532 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:37,532 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:37,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable159 [2020-11-12 03:33:37,736 INFO L429 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:37,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:37,736 INFO L82 PathProgramCache]: Analyzing trace with hash -511885293, now seen corresponding path program 150 times [2020-11-12 03:33:37,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:37,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556158277] [2020-11-12 03:33:37,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:38,412 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:38,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556158277] [2020-11-12 03:33:38,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224213614] [2020-11-12 03:33:38,413 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:38,523 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-11-12 03:33:38,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:38,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:33:38,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:38,571 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:33:38,593 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:38,637 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:38,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:38,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-11-12 03:33:38,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361535222] [2020-11-12 03:33:38,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-12 03:33:38,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:38,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-12 03:33:38,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2020-11-12 03:33:38,639 INFO L87 Difference]: Start difference. First operand 2087 states and 3504 transitions. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:40,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:40,021 INFO L93 Difference]: Finished difference Result 3709 states and 6684 transitions. [2020-11-12 03:33:40,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-12 03:33:40,023 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 03:33:40,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:40,029 INFO L225 Difference]: With dead ends: 3709 [2020-11-12 03:33:40,029 INFO L226 Difference]: Without dead ends: 3439 [2020-11-12 03:33:40,030 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=575, Invalid=1681, Unknown=0, NotChecked=0, Total=2256 [2020-11-12 03:33:40,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3439 states. [2020-11-12 03:33:40,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3439 to 2137. [2020-11-12 03:33:40,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2137 states, 2073 states have (on average 1.728895320791124) internal successors, (3584), 2136 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:40,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 3584 transitions. [2020-11-12 03:33:40,068 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 3584 transitions. Word has length 116 [2020-11-12 03:33:40,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:40,069 INFO L481 AbstractCegarLoop]: Abstraction has 2137 states and 3584 transitions. [2020-11-12 03:33:40,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:40,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 3584 transitions. [2020-11-12 03:33:40,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:33:40,071 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:40,071 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:40,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:40,272 INFO L429 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:40,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:40,273 INFO L82 PathProgramCache]: Analyzing trace with hash 382968235, now seen corresponding path program 151 times [2020-11-12 03:33:40,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:40,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747798503] [2020-11-12 03:33:40,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:40,837 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:40,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747798503] [2020-11-12 03:33:40,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421783769] [2020-11-12 03:33:40,838 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:40,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:33:40,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:40,951 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:40,992 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:40,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:40,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-11-12 03:33:40,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667223852] [2020-11-12 03:33:40,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:33:40,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:40,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:33:40,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:33:40,994 INFO L87 Difference]: Start difference. First operand 2137 states and 3584 transitions. 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) [2020-11-12 03:33:42,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:42,103 INFO L93 Difference]: Finished difference Result 3734 states and 6714 transitions. [2020-11-12 03:33:42,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-12 03:33:42,104 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 [2020-11-12 03:33:42,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:42,108 INFO L225 Difference]: With dead ends: 3734 [2020-11-12 03:33:42,109 INFO L226 Difference]: Without dead ends: 3464 [2020-11-12 03:33:42,109 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=519, Invalid=1551, Unknown=0, NotChecked=0, Total=2070 [2020-11-12 03:33:42,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3464 states. [2020-11-12 03:33:42,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3464 to 2187. [2020-11-12 03:33:42,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2187 states, 2123 states have (on average 1.7258596325953839) internal successors, (3664), 2186 states have internal predecessors, (3664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:42,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 3664 transitions. [2020-11-12 03:33:42,146 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 3664 transitions. Word has length 116 [2020-11-12 03:33:42,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:42,146 INFO L481 AbstractCegarLoop]: Abstraction has 2187 states and 3664 transitions. [2020-11-12 03:33:42,146 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) [2020-11-12 03:33:42,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 3664 transitions. [2020-11-12 03:33:42,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:33:42,148 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:42,148 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:42,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,157 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:42,349 INFO L429 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:42,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:42,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1383084267, now seen corresponding path program 152 times [2020-11-12 03:33:42,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:42,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334515513] [2020-11-12 03:33:42,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:42,945 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:42,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334515513] [2020-11-12 03:33:42,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355817196] [2020-11-12 03:33:42,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:43,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:33:43,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:43,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:33:43,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:43,079 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:33:43,100 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:43,121 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:43,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:43,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-11-12 03:33:43,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926370747] [2020-11-12 03:33:43,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-12 03:33:43,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:43,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-12 03:33:43,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2020-11-12 03:33:43,123 INFO L87 Difference]: Start difference. First operand 2187 states and 3664 transitions. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:44,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:44,630 INFO L93 Difference]: Finished difference Result 3734 states and 6694 transitions. [2020-11-12 03:33:44,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-12 03:33:44,631 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 03:33:44,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:44,637 INFO L225 Difference]: With dead ends: 3734 [2020-11-12 03:33:44,638 INFO L226 Difference]: Without dead ends: 3464 [2020-11-12 03:33:44,638 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=590, Invalid=1860, Unknown=0, NotChecked=0, Total=2450 [2020-11-12 03:33:44,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3464 states. [2020-11-12 03:33:44,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3464 to 2212. [2020-11-12 03:33:44,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2212 states, 2148 states have (on average 1.7313780260707634) internal successors, (3719), 2211 states have internal predecessors, (3719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:44,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 3719 transitions. [2020-11-12 03:33:44,681 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 3719 transitions. Word has length 116 [2020-11-12 03:33:44,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:44,682 INFO L481 AbstractCegarLoop]: Abstraction has 2212 states and 3719 transitions. [2020-11-12 03:33:44,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:44,682 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 3719 transitions. [2020-11-12 03:33:44,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:33:44,684 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:44,685 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:44,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,158 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:44,885 INFO L429 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:44,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:44,886 INFO L82 PathProgramCache]: Analyzing trace with hash 255427209, now seen corresponding path program 153 times [2020-11-12 03:33:44,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:44,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987741962] [2020-11-12 03:33:44,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:45,477 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:45,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987741962] [2020-11-12 03:33:45,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288098131] [2020-11-12 03:33:45,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:45,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-12 03:33:45,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:45,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:33:45,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:45,609 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:45,628 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:45,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:45,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-11-12 03:33:45,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045360826] [2020-11-12 03:33:45,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:33:45,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:45,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:33:45,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:33:45,630 INFO L87 Difference]: Start difference. First operand 2212 states and 3719 transitions. 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) [2020-11-12 03:33:46,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:46,852 INFO L93 Difference]: Finished difference Result 3709 states and 6649 transitions. [2020-11-12 03:33:46,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-12 03:33:46,854 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 [2020-11-12 03:33:46,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:46,858 INFO L225 Difference]: With dead ends: 3709 [2020-11-12 03:33:46,858 INFO L226 Difference]: Without dead ends: 3439 [2020-11-12 03:33:46,859 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=542, Invalid=1714, Unknown=0, NotChecked=0, Total=2256 [2020-11-12 03:33:46,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3439 states. [2020-11-12 03:33:46,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3439 to 2237. [2020-11-12 03:33:46,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2237 states, 2173 states have (on average 1.7367694431661298) internal successors, (3774), 2236 states have internal predecessors, (3774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:46,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2237 states to 2237 states and 3774 transitions. [2020-11-12 03:33:46,891 INFO L78 Accepts]: Start accepts. Automaton has 2237 states and 3774 transitions. Word has length 116 [2020-11-12 03:33:46,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:46,891 INFO L481 AbstractCegarLoop]: Abstraction has 2237 states and 3774 transitions. [2020-11-12 03:33:46,891 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) [2020-11-12 03:33:46,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2237 states and 3774 transitions. [2020-11-12 03:33:46,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:33:46,893 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:46,893 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:47,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,159 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:47,094 INFO L429 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:47,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:47,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1663312329, now seen corresponding path program 154 times [2020-11-12 03:33:47,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:47,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437705741] [2020-11-12 03:33:47,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:47,682 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:47,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437705741] [2020-11-12 03:33:47,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457181977] [2020-11-12 03:33:47,683 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:47,780 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:33:47,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:47,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:33:47,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:47,837 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:33:47,864 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:47,906 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:47,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:47,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-11-12 03:33:47,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114900731] [2020-11-12 03:33:47,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-12 03:33:47,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:47,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-12 03:33:47,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2020-11-12 03:33:47,908 INFO L87 Difference]: Start difference. First operand 2237 states and 3774 transitions. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:49,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:49,652 INFO L93 Difference]: Finished difference Result 3684 states and 6604 transitions. [2020-11-12 03:33:49,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-12 03:33:49,654 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 03:33:49,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:49,659 INFO L225 Difference]: With dead ends: 3684 [2020-11-12 03:33:49,660 INFO L226 Difference]: Without dead ends: 3414 [2020-11-12 03:33:49,660 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=621, Invalid=2031, Unknown=0, NotChecked=0, Total=2652 [2020-11-12 03:33:49,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3414 states. [2020-11-12 03:33:49,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3414 to 2262. [2020-11-12 03:33:49,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2262 states, 2198 states have (on average 1.7420382165605095) internal successors, (3829), 2261 states have internal predecessors, (3829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:49,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 3829 transitions. [2020-11-12 03:33:49,701 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 3829 transitions. Word has length 116 [2020-11-12 03:33:49,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:49,701 INFO L481 AbstractCegarLoop]: Abstraction has 2262 states and 3829 transitions. [2020-11-12 03:33:49,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:49,702 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 3829 transitions. [2020-11-12 03:33:49,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:33:49,705 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:49,705 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:49,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,160 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:49,908 INFO L429 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:49,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:49,909 INFO L82 PathProgramCache]: Analyzing trace with hash 742080743, now seen corresponding path program 155 times [2020-11-12 03:33:49,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:49,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952458794] [2020-11-12 03:33:49,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:50,488 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:50,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952458794] [2020-11-12 03:33:50,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790533989] [2020-11-12 03:33:50,489 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:50,588 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-11-12 03:33:50,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:50,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:33:50,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:50,625 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:50,651 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:50,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:50,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-11-12 03:33:50,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904890704] [2020-11-12 03:33:50,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:33:50,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:50,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:33:50,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:33:50,653 INFO L87 Difference]: Start difference. First operand 2262 states and 3829 transitions. 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) [2020-11-12 03:33:52,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:52,137 INFO L93 Difference]: Finished difference Result 3659 states and 6559 transitions. [2020-11-12 03:33:52,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-12 03:33:52,138 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 [2020-11-12 03:33:52,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:52,145 INFO L225 Difference]: With dead ends: 3659 [2020-11-12 03:33:52,145 INFO L226 Difference]: Without dead ends: 3389 [2020-11-12 03:33:52,145 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=581, Invalid=1869, Unknown=0, NotChecked=0, Total=2450 [2020-11-12 03:33:52,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3389 states. [2020-11-12 03:33:52,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3389 to 2287. [2020-11-12 03:33:52,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2287 states, 2223 states have (on average 1.7471884840305894) internal successors, (3884), 2286 states have internal predecessors, (3884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:52,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 3884 transitions. [2020-11-12 03:33:52,187 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 3884 transitions. Word has length 116 [2020-11-12 03:33:52,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:52,187 INFO L481 AbstractCegarLoop]: Abstraction has 2287 states and 3884 transitions. [2020-11-12 03:33:52,187 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) [2020-11-12 03:33:52,187 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 3884 transitions. [2020-11-12 03:33:52,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:33:52,190 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:52,190 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:52,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,161 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:52,391 INFO L429 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:52,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:52,392 INFO L82 PathProgramCache]: Analyzing trace with hash -272109529, now seen corresponding path program 156 times [2020-11-12 03:33:52,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:52,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770085979] [2020-11-12 03:33:52,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:52,956 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:52,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770085979] [2020-11-12 03:33:52,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602829707] [2020-11-12 03:33:52,957 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:53,059 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-11-12 03:33:53,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:53,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:33:53,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:53,104 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:33:53,126 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:53,144 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:53,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:53,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-11-12 03:33:53,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270097678] [2020-11-12 03:33:53,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-12 03:33:53,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:53,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-12 03:33:53,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2020-11-12 03:33:53,146 INFO L87 Difference]: Start difference. First operand 2287 states and 3884 transitions. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:54,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:54,922 INFO L93 Difference]: Finished difference Result 3634 states and 6514 transitions. [2020-11-12 03:33:54,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-12 03:33:54,924 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 03:33:54,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:54,955 INFO L225 Difference]: With dead ends: 3634 [2020-11-12 03:33:54,955 INFO L226 Difference]: Without dead ends: 3364 [2020-11-12 03:33:54,956 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=668, Invalid=2194, Unknown=0, NotChecked=0, Total=2862 [2020-11-12 03:33:54,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3364 states. [2020-11-12 03:33:54,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3364 to 2312. [2020-11-12 03:33:54,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2312 states, 2248 states have (on average 1.7522241992882561) internal successors, (3939), 2311 states have internal predecessors, (3939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:54,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 3939 transitions. [2020-11-12 03:33:55,000 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 3939 transitions. Word has length 116 [2020-11-12 03:33:55,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:55,000 INFO L481 AbstractCegarLoop]: Abstraction has 2312 states and 3939 transitions. [2020-11-12 03:33:55,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:55,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 3939 transitions. [2020-11-12 03:33:55,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:33:55,003 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:55,004 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:55,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166,162 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:55,205 INFO L429 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:55,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:55,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1744323387, now seen corresponding path program 157 times [2020-11-12 03:33:55,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:55,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16337623] [2020-11-12 03:33:55,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:55,758 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:55,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16337623] [2020-11-12 03:33:55,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456764469] [2020-11-12 03:33:55,758 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:55,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:33:55,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:55,883 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:55,901 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:55,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:55,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-11-12 03:33:55,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60080680] [2020-11-12 03:33:55,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:33:55,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:55,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:33:55,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:33:55,903 INFO L87 Difference]: Start difference. First operand 2312 states and 3939 transitions. 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) [2020-11-12 03:33:57,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:33:57,533 INFO L93 Difference]: Finished difference Result 3609 states and 6469 transitions. [2020-11-12 03:33:57,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 03:33:57,534 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 [2020-11-12 03:33:57,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:33:57,542 INFO L225 Difference]: With dead ends: 3609 [2020-11-12 03:33:57,542 INFO L226 Difference]: Without dead ends: 3339 [2020-11-12 03:33:57,543 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=636, Invalid=2016, Unknown=0, NotChecked=0, Total=2652 [2020-11-12 03:33:57,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2020-11-12 03:33:57,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 2337. [2020-11-12 03:33:57,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2337 states, 2273 states have (on average 1.7571491421029477) internal successors, (3994), 2336 states have internal predecessors, (3994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:33:57,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2337 states to 2337 states and 3994 transitions. [2020-11-12 03:33:57,590 INFO L78 Accepts]: Start accepts. Automaton has 2337 states and 3994 transitions. Word has length 116 [2020-11-12 03:33:57,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:33:57,590 INFO L481 AbstractCegarLoop]: Abstraction has 2337 states and 3994 transitions. [2020-11-12 03:33:57,590 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) [2020-11-12 03:33:57,590 INFO L276 IsEmpty]: Start isEmpty. Operand 2337 states and 3994 transitions. [2020-11-12 03:33:57,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:33:57,593 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:33:57,593 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:33:57,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2020-11-12 03:33:57,794 INFO L429 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:33:57,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:33:57,795 INFO L82 PathProgramCache]: Analyzing trace with hash 2072673285, now seen corresponding path program 158 times [2020-11-12 03:33:57,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:33:57,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241455292] [2020-11-12 03:33:57,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:33:57,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:33:58,438 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:58,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241455292] [2020-11-12 03:33:58,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42120140] [2020-11-12 03:33:58,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:33:58,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:33:58,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:33:58,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:33:58,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:33:58,584 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:33:58,612 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:33:58,628 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:33:58,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:33:58,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-11-12 03:33:58,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404401719] [2020-11-12 03:33:58,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-12 03:33:58,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:33:58,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-12 03:33:58,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2020-11-12 03:33:58,630 INFO L87 Difference]: Start difference. First operand 2337 states and 3994 transitions. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:00,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:00,494 INFO L93 Difference]: Finished difference Result 3584 states and 6424 transitions. [2020-11-12 03:34:00,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-12 03:34:00,496 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 03:34:00,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:00,501 INFO L225 Difference]: With dead ends: 3584 [2020-11-12 03:34:00,502 INFO L226 Difference]: Without dead ends: 3314 [2020-11-12 03:34:00,502 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=731, Invalid=2349, Unknown=0, NotChecked=0, Total=3080 [2020-11-12 03:34:00,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3314 states. [2020-11-12 03:34:00,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3314 to 2362. [2020-11-12 03:34:00,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2362 states, 2298 states have (on average 1.7619669277632724) internal successors, (4049), 2361 states have internal predecessors, (4049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:00,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 4049 transitions. [2020-11-12 03:34:00,538 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 4049 transitions. Word has length 116 [2020-11-12 03:34:00,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:00,538 INFO L481 AbstractCegarLoop]: Abstraction has 2362 states and 4049 transitions. [2020-11-12 03:34:00,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:00,538 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 4049 transitions. [2020-11-12 03:34:00,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:34:00,541 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:00,541 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:00,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2020-11-12 03:34:00,742 INFO L429 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:00,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:00,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1075456477, now seen corresponding path program 159 times [2020-11-12 03:34:00,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:00,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875927366] [2020-11-12 03:34:00,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:01,337 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:01,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875927366] [2020-11-12 03:34:01,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076757459] [2020-11-12 03:34:01,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:01,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-12 03:34:01,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:01,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:34:01,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:01,541 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:01,567 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:01,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:01,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-11-12 03:34:01,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810453558] [2020-11-12 03:34:01,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:34:01,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:01,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:34:01,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:34:01,569 INFO L87 Difference]: Start difference. First operand 2362 states and 4049 transitions. 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) [2020-11-12 03:34:03,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:03,128 INFO L93 Difference]: Finished difference Result 3559 states and 6379 transitions. [2020-11-12 03:34:03,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 03:34:03,129 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 [2020-11-12 03:34:03,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:03,135 INFO L225 Difference]: With dead ends: 3559 [2020-11-12 03:34:03,135 INFO L226 Difference]: Without dead ends: 3289 [2020-11-12 03:34:03,136 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=707, Invalid=2155, Unknown=0, NotChecked=0, Total=2862 [2020-11-12 03:34:03,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2020-11-12 03:34:03,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 2387. [2020-11-12 03:34:03,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2387 states, 2323 states have (on average 1.7666810159276798) internal successors, (4104), 2386 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:03,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2387 states to 2387 states and 4104 transitions. [2020-11-12 03:34:03,171 INFO L78 Accepts]: Start accepts. Automaton has 2387 states and 4104 transitions. Word has length 116 [2020-11-12 03:34:03,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:03,172 INFO L481 AbstractCegarLoop]: Abstraction has 2387 states and 4104 transitions. [2020-11-12 03:34:03,172 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) [2020-11-12 03:34:03,172 INFO L276 IsEmpty]: Start isEmpty. Operand 2387 states and 4104 transitions. [2020-11-12 03:34:03,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:34:03,174 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:03,174 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:03,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2020-11-12 03:34:03,375 INFO L429 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:03,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:03,375 INFO L82 PathProgramCache]: Analyzing trace with hash 213034339, now seen corresponding path program 160 times [2020-11-12 03:34:03,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:03,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144317560] [2020-11-12 03:34:03,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:03,934 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:03,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144317560] [2020-11-12 03:34:03,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121272598] [2020-11-12 03:34:03,935 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:04,030 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:34:04,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:04,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:34:04,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:04,084 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:34:04,113 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:04,130 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:04,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:04,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-11-12 03:34:04,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387738187] [2020-11-12 03:34:04,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-12 03:34:04,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:04,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-12 03:34:04,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2020-11-12 03:34:04,131 INFO L87 Difference]: Start difference. First operand 2387 states and 4104 transitions. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:06,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:06,056 INFO L93 Difference]: Finished difference Result 3534 states and 6334 transitions. [2020-11-12 03:34:06,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-11-12 03:34:06,057 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 03:34:06,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:06,062 INFO L225 Difference]: With dead ends: 3534 [2020-11-12 03:34:06,062 INFO L226 Difference]: Without dead ends: 3264 [2020-11-12 03:34:06,063 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 769 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=810, Invalid=2496, Unknown=0, NotChecked=0, Total=3306 [2020-11-12 03:34:06,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3264 states. [2020-11-12 03:34:06,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3264 to 2412. [2020-11-12 03:34:06,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2348 states have (on average 1.7712947189097104) internal successors, (4159), 2411 states have internal predecessors, (4159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:06,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 4159 transitions. [2020-11-12 03:34:06,097 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 4159 transitions. Word has length 116 [2020-11-12 03:34:06,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:06,097 INFO L481 AbstractCegarLoop]: Abstraction has 2412 states and 4159 transitions. [2020-11-12 03:34:06,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:06,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 4159 transitions. [2020-11-12 03:34:06,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:34:06,099 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:06,099 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:06,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170,166 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:06,300 INFO L429 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:06,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:06,301 INFO L82 PathProgramCache]: Analyzing trace with hash -768316159, now seen corresponding path program 161 times [2020-11-12 03:34:06,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:06,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94806902] [2020-11-12 03:34:06,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:06,871 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:06,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94806902] [2020-11-12 03:34:06,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83955728] [2020-11-12 03:34:06,871 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:06,970 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2020-11-12 03:34:06,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:06,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:34:06,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:07,008 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:07,026 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:07,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:07,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-11-12 03:34:07,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701476435] [2020-11-12 03:34:07,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:34:07,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:07,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:34:07,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:34:07,028 INFO L87 Difference]: Start difference. First operand 2412 states and 4159 transitions. 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) [2020-11-12 03:34:08,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:08,706 INFO L93 Difference]: Finished difference Result 3509 states and 6289 transitions. [2020-11-12 03:34:08,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 03:34:08,708 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 [2020-11-12 03:34:08,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:08,713 INFO L225 Difference]: With dead ends: 3509 [2020-11-12 03:34:08,713 INFO L226 Difference]: Without dead ends: 3239 [2020-11-12 03:34:08,713 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=794, Invalid=2286, Unknown=0, NotChecked=0, Total=3080 [2020-11-12 03:34:08,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3239 states. [2020-11-12 03:34:08,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3239 to 2437. [2020-11-12 03:34:08,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2437 states, 2373 states have (on average 1.775811209439528) internal successors, (4214), 2436 states have internal predecessors, (4214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:08,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 4214 transitions. [2020-11-12 03:34:08,749 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 4214 transitions. Word has length 116 [2020-11-12 03:34:08,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:08,750 INFO L481 AbstractCegarLoop]: Abstraction has 2437 states and 4214 transitions. [2020-11-12 03:34:08,750 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) [2020-11-12 03:34:08,750 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 4214 transitions. [2020-11-12 03:34:08,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:34:08,753 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:08,753 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:08,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 167 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable171 [2020-11-12 03:34:08,954 INFO L429 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:08,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:08,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1432400831, now seen corresponding path program 162 times [2020-11-12 03:34:08,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:08,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396818754] [2020-11-12 03:34:08,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:09,532 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:09,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396818754] [2020-11-12 03:34:09,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404266081] [2020-11-12 03:34:09,533 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:09,643 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-11-12 03:34:09,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:09,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:34:09,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:09,694 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:34:09,723 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:09,739 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:09,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:09,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-11-12 03:34:09,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226613213] [2020-11-12 03:34:09,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-12 03:34:09,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:09,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-12 03:34:09,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2020-11-12 03:34:09,741 INFO L87 Difference]: Start difference. First operand 2437 states and 4214 transitions. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:12,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:12,004 INFO L93 Difference]: Finished difference Result 3484 states and 6244 transitions. [2020-11-12 03:34:12,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-11-12 03:34:12,005 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 03:34:12,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:12,010 INFO L225 Difference]: With dead ends: 3484 [2020-11-12 03:34:12,010 INFO L226 Difference]: Without dead ends: 3214 [2020-11-12 03:34:12,011 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 855 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=905, Invalid=2635, Unknown=0, NotChecked=0, Total=3540 [2020-11-12 03:34:12,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3214 states. [2020-11-12 03:34:12,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3214 to 2462. [2020-11-12 03:34:12,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2462 states, 2398 states have (on average 1.78023352793995) internal successors, (4269), 2461 states have internal predecessors, (4269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:12,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2462 states to 2462 states and 4269 transitions. [2020-11-12 03:34:12,075 INFO L78 Accepts]: Start accepts. Automaton has 2462 states and 4269 transitions. Word has length 116 [2020-11-12 03:34:12,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:12,075 INFO L481 AbstractCegarLoop]: Abstraction has 2462 states and 4269 transitions. [2020-11-12 03:34:12,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:12,075 INFO L276 IsEmpty]: Start isEmpty. Operand 2462 states and 4269 transitions. [2020-11-12 03:34:12,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:34:12,081 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:12,082 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:12,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,168 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:12,295 INFO L429 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:12,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:12,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1133878945, now seen corresponding path program 163 times [2020-11-12 03:34:12,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:12,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000568933] [2020-11-12 03:34:12,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:12,875 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:12,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000568933] [2020-11-12 03:34:12,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477967974] [2020-11-12 03:34:12,876 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:12,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:34:12,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:13,017 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:13,046 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:13,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:13,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-11-12 03:34:13,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235758925] [2020-11-12 03:34:13,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:34:13,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:13,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:34:13,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:34:13,051 INFO L87 Difference]: Start difference. First operand 2462 states and 4269 transitions. 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) [2020-11-12 03:34:14,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:14,918 INFO L93 Difference]: Finished difference Result 3459 states and 6199 transitions. [2020-11-12 03:34:14,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 03:34:14,919 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 [2020-11-12 03:34:14,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:14,924 INFO L225 Difference]: With dead ends: 3459 [2020-11-12 03:34:14,925 INFO L226 Difference]: Without dead ends: 3189 [2020-11-12 03:34:14,925 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 828 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=897, Invalid=2409, Unknown=0, NotChecked=0, Total=3306 [2020-11-12 03:34:14,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3189 states. [2020-11-12 03:34:14,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3189 to 2487. [2020-11-12 03:34:14,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2487 states, 2423 states have (on average 1.784564589352043) internal successors, (4324), 2486 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:14,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2487 states to 2487 states and 4324 transitions. [2020-11-12 03:34:14,967 INFO L78 Accepts]: Start accepts. Automaton has 2487 states and 4324 transitions. Word has length 116 [2020-11-12 03:34:14,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:14,967 INFO L481 AbstractCegarLoop]: Abstraction has 2487 states and 4324 transitions. [2020-11-12 03:34:14,967 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) [2020-11-12 03:34:14,967 INFO L276 IsEmpty]: Start isEmpty. Operand 2487 states and 4324 transitions. [2020-11-12 03:34:14,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:34:14,970 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:14,970 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:15,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,169 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:15,171 INFO L429 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:15,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:15,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1539788959, now seen corresponding path program 164 times [2020-11-12 03:34:15,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:15,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460454787] [2020-11-12 03:34:15,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:15,682 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:15,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460454787] [2020-11-12 03:34:15,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910188059] [2020-11-12 03:34:15,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:15,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:34:15,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:15,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:34:15,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:15,823 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:34:15,851 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:15,869 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:15,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:15,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-11-12 03:34:15,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008182975] [2020-11-12 03:34:15,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-12 03:34:15,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:15,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-12 03:34:15,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2020-11-12 03:34:15,871 INFO L87 Difference]: Start difference. First operand 2487 states and 4324 transitions. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:18,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:18,247 INFO L93 Difference]: Finished difference Result 3479 states and 6232 transitions. [2020-11-12 03:34:18,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-11-12 03:34:18,249 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 03:34:18,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:18,255 INFO L225 Difference]: With dead ends: 3479 [2020-11-12 03:34:18,255 INFO L226 Difference]: Without dead ends: 3209 [2020-11-12 03:34:18,256 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1016, Invalid=2766, Unknown=0, NotChecked=0, Total=3782 [2020-11-12 03:34:18,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3209 states. [2020-11-12 03:34:18,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3209 to 2512. [2020-11-12 03:34:18,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2512 states, 2448 states have (on average 1.7912581699346406) internal successors, (4385), 2511 states have internal predecessors, (4385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:18,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2512 states to 2512 states and 4385 transitions. [2020-11-12 03:34:18,319 INFO L78 Accepts]: Start accepts. Automaton has 2512 states and 4385 transitions. Word has length 116 [2020-11-12 03:34:18,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:18,320 INFO L481 AbstractCegarLoop]: Abstraction has 2512 states and 4385 transitions. [2020-11-12 03:34:18,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:18,320 INFO L276 IsEmpty]: Start isEmpty. Operand 2512 states and 4385 transitions. [2020-11-12 03:34:18,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:34:18,325 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:18,325 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:18,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,170 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:18,540 INFO L429 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:18,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:18,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1621088173, now seen corresponding path program 165 times [2020-11-12 03:34:18,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:18,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127789720] [2020-11-12 03:34:18,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:19,050 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:19,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127789720] [2020-11-12 03:34:19,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955934200] [2020-11-12 03:34:19,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:19,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-12 03:34:19,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:19,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 03:34:19,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:19,194 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:19,209 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:19,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:19,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-11-12 03:34:19,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808860807] [2020-11-12 03:34:19,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 03:34:19,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:19,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 03:34:19,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2020-11-12 03:34:19,210 INFO L87 Difference]: Start difference. First operand 2512 states and 4385 transitions. 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) [2020-11-12 03:34:21,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:21,205 INFO L93 Difference]: Finished difference Result 4541 states and 7669 transitions. [2020-11-12 03:34:21,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 03:34:21,206 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 [2020-11-12 03:34:21,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:21,213 INFO L225 Difference]: With dead ends: 4541 [2020-11-12 03:34:21,214 INFO L226 Difference]: Without dead ends: 4256 [2020-11-12 03:34:21,214 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 914 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1017, Invalid=2523, Unknown=0, NotChecked=0, Total=3540 [2020-11-12 03:34:21,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4256 states. [2020-11-12 03:34:21,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4256 to 2597. [2020-11-12 03:34:21,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2597 states, 2533 states have (on average 1.8093170153967628) internal successors, (4583), 2596 states have internal predecessors, (4583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:21,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2597 states to 2597 states and 4583 transitions. [2020-11-12 03:34:21,264 INFO L78 Accepts]: Start accepts. Automaton has 2597 states and 4583 transitions. Word has length 116 [2020-11-12 03:34:21,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:21,264 INFO L481 AbstractCegarLoop]: Abstraction has 2597 states and 4583 transitions. [2020-11-12 03:34:21,264 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) [2020-11-12 03:34:21,264 INFO L276 IsEmpty]: Start isEmpty. Operand 2597 states and 4583 transitions. [2020-11-12 03:34:21,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 03:34:21,267 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:21,267 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:21,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable175 [2020-11-12 03:34:21,468 INFO L429 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:21,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:21,468 INFO L82 PathProgramCache]: Analyzing trace with hash -781110981, now seen corresponding path program 166 times [2020-11-12 03:34:21,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:21,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323866954] [2020-11-12 03:34:21,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:21,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:22,018 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:22,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323866954] [2020-11-12 03:34:22,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410463415] [2020-11-12 03:34:22,018 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:22,120 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:34:22,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:22,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:34:22,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:22,171 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:34:22,202 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:22,216 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:22,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:22,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-11-12 03:34:22,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854537147] [2020-11-12 03:34:22,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-12 03:34:22,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:22,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-12 03:34:22,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2020-11-12 03:34:22,217 INFO L87 Difference]: Start difference. First operand 2597 states and 4583 transitions. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:24,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:24,914 INFO L93 Difference]: Finished difference Result 3540 states and 6289 transitions. [2020-11-12 03:34:24,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-12 03:34:24,915 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 03:34:24,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:24,921 INFO L225 Difference]: With dead ends: 3540 [2020-11-12 03:34:24,921 INFO L226 Difference]: Without dead ends: 3144 [2020-11-12 03:34:24,921 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1146, Invalid=2886, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 03:34:24,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3144 states. [2020-11-12 03:34:24,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3144 to 2112. [2020-11-12 03:34:24,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 2048 states have (on average 1.7255859375) internal successors, (3534), 2111 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:24,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 3534 transitions. [2020-11-12 03:34:24,961 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 3534 transitions. Word has length 116 [2020-11-12 03:34:24,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:24,961 INFO L481 AbstractCegarLoop]: Abstraction has 2112 states and 3534 transitions. [2020-11-12 03:34:24,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:24,961 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 3534 transitions. [2020-11-12 03:34:24,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:34:24,963 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:24,963 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:25,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,172 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:25,164 INFO L429 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:25,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:25,164 INFO L82 PathProgramCache]: Analyzing trace with hash -707361594, now seen corresponding path program 167 times [2020-11-12 03:34:25,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:25,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363041415] [2020-11-12 03:34:25,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:25,915 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:25,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363041415] [2020-11-12 03:34:25,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814612377] [2020-11-12 03:34:25,916 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:26,016 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-11-12 03:34:26,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:26,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:34:26,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:26,106 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:26,129 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:26,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:26,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-11-12 03:34:26,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987670211] [2020-11-12 03:34:26,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:34:26,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:26,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:34:26,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:34:26,131 INFO L87 Difference]: Start difference. First operand 2112 states and 3534 transitions. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:27,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:27,518 INFO L93 Difference]: Finished difference Result 3409 states and 6064 transitions. [2020-11-12 03:34:27,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-12 03:34:27,519 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:34:27,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:27,526 INFO L225 Difference]: With dead ends: 3409 [2020-11-12 03:34:27,526 INFO L226 Difference]: Without dead ends: 3139 [2020-11-12 03:34:27,527 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=610, Invalid=1742, Unknown=0, NotChecked=0, Total=2352 [2020-11-12 03:34:27,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2020-11-12 03:34:27,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 2152. [2020-11-12 03:34:27,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2152 states, 2088 states have (on average 1.7260536398467432) internal successors, (3604), 2151 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:27,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2152 states to 2152 states and 3604 transitions. [2020-11-12 03:34:27,565 INFO L78 Accepts]: Start accepts. Automaton has 2152 states and 3604 transitions. Word has length 121 [2020-11-12 03:34:27,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:27,565 INFO L481 AbstractCegarLoop]: Abstraction has 2152 states and 3604 transitions. [2020-11-12 03:34:27,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:27,565 INFO L276 IsEmpty]: Start isEmpty. Operand 2152 states and 3604 transitions. [2020-11-12 03:34:27,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:34:27,567 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:27,568 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:27,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 173 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable177 [2020-11-12 03:34:27,769 INFO L429 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:27,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:27,770 INFO L82 PathProgramCache]: Analyzing trace with hash 930677766, now seen corresponding path program 168 times [2020-11-12 03:34:27,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:27,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487088054] [2020-11-12 03:34:27,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:28,481 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:28,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487088054] [2020-11-12 03:34:28,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610851525] [2020-11-12 03:34:28,482 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:28,587 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-11-12 03:34:28,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:28,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:34:28,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:28,639 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:34:28,711 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:28,734 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:28,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:28,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-11-12 03:34:28,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892831123] [2020-11-12 03:34:28,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:34:28,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:28,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:34:28,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:34:28,735 INFO L87 Difference]: Start difference. First operand 2152 states and 3604 transitions. Second operand has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:30,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:30,116 INFO L93 Difference]: Finished difference Result 3844 states and 6914 transitions. [2020-11-12 03:34:30,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-12 03:34:30,118 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:34:30,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:30,124 INFO L225 Difference]: With dead ends: 3844 [2020-11-12 03:34:30,124 INFO L226 Difference]: Without dead ends: 3574 [2020-11-12 03:34:30,125 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=665, Invalid=1987, Unknown=0, NotChecked=0, Total=2652 [2020-11-12 03:34:30,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3574 states. [2020-11-12 03:34:30,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3574 to 2177. [2020-11-12 03:34:30,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2177 states, 2113 states have (on average 1.7316611452910553) internal successors, (3659), 2176 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:30,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2177 states to 2177 states and 3659 transitions. [2020-11-12 03:34:30,161 INFO L78 Accepts]: Start accepts. Automaton has 2177 states and 3659 transitions. Word has length 121 [2020-11-12 03:34:30,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:30,162 INFO L481 AbstractCegarLoop]: Abstraction has 2177 states and 3659 transitions. [2020-11-12 03:34:30,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:30,162 INFO L276 IsEmpty]: Start isEmpty. Operand 2177 states and 3659 transitions. [2020-11-12 03:34:30,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:34:30,165 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:30,165 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:30,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 174 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable178 [2020-11-12 03:34:30,366 INFO L429 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:30,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:30,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1900582876, now seen corresponding path program 169 times [2020-11-12 03:34:30,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:30,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179631587] [2020-11-12 03:34:30,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:30,992 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:30,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179631587] [2020-11-12 03:34:30,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756322311] [2020-11-12 03:34:30,993 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:31,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:31,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:34:31,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:31,149 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:31,173 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:31,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:31,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-11-12 03:34:31,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533351595] [2020-11-12 03:34:31,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:34:31,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:31,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:34:31,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:34:31,174 INFO L87 Difference]: Start difference. First operand 2177 states and 3659 transitions. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:32,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:32,610 INFO L93 Difference]: Finished difference Result 3859 states and 6924 transitions. [2020-11-12 03:34:32,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-12 03:34:32,612 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:34:32,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:32,616 INFO L225 Difference]: With dead ends: 3859 [2020-11-12 03:34:32,617 INFO L226 Difference]: Without dead ends: 3589 [2020-11-12 03:34:32,617 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=663, Invalid=1989, Unknown=0, NotChecked=0, Total=2652 [2020-11-12 03:34:32,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-11-12 03:34:32,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 2202. [2020-11-12 03:34:32,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2202 states, 2138 states have (on average 1.737137511693171) internal successors, (3714), 2201 states have internal predecessors, (3714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:32,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2202 states to 2202 states and 3714 transitions. [2020-11-12 03:34:32,660 INFO L78 Accepts]: Start accepts. Automaton has 2202 states and 3714 transitions. Word has length 121 [2020-11-12 03:34:32,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:32,660 INFO L481 AbstractCegarLoop]: Abstraction has 2202 states and 3714 transitions. [2020-11-12 03:34:32,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:32,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2202 states and 3714 transitions. [2020-11-12 03:34:32,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:34:32,662 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:32,663 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:32,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2020-11-12 03:34:32,864 INFO L429 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:32,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:32,864 INFO L82 PathProgramCache]: Analyzing trace with hash -900466844, now seen corresponding path program 170 times [2020-11-12 03:34:32,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:32,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212679701] [2020-11-12 03:34:32,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:33,531 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:33,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212679701] [2020-11-12 03:34:33,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011835733] [2020-11-12 03:34:33,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:33,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:34:33,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:33,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:34:33,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:33,675 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:34:33,742 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:33,763 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:33,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:33,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-11-12 03:34:33,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953830212] [2020-11-12 03:34:33,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:34:33,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:33,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:34:33,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:34:33,765 INFO L87 Difference]: Start difference. First operand 2202 states and 3714 transitions. Second operand has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:35,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:35,455 INFO L93 Difference]: Finished difference Result 3859 states and 6904 transitions. [2020-11-12 03:34:35,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-12 03:34:35,457 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:34:35,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:35,463 INFO L225 Difference]: With dead ends: 3859 [2020-11-12 03:34:35,463 INFO L226 Difference]: Without dead ends: 3589 [2020-11-12 03:34:35,463 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=686, Invalid=2176, Unknown=0, NotChecked=0, Total=2862 [2020-11-12 03:34:35,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-11-12 03:34:35,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 2227. [2020-11-12 03:34:35,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2227 states, 2163 states have (on average 1.7424872861766065) internal successors, (3769), 2226 states have internal predecessors, (3769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:35,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2227 states to 2227 states and 3769 transitions. [2020-11-12 03:34:35,528 INFO L78 Accepts]: Start accepts. Automaton has 2227 states and 3769 transitions. Word has length 121 [2020-11-12 03:34:35,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:35,528 INFO L481 AbstractCegarLoop]: Abstraction has 2227 states and 3769 transitions. [2020-11-12 03:34:35,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:35,529 INFO L276 IsEmpty]: Start isEmpty. Operand 2227 states and 3769 transitions. [2020-11-12 03:34:35,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:34:35,530 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:35,530 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:35,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable180 [2020-11-12 03:34:35,732 INFO L429 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:35,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:35,732 INFO L82 PathProgramCache]: Analyzing trace with hash -2028123902, now seen corresponding path program 171 times [2020-11-12 03:34:35,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:35,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648858109] [2020-11-12 03:34:35,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:36,322 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:36,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648858109] [2020-11-12 03:34:36,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262663388] [2020-11-12 03:34:36,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:36,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-11-12 03:34:36,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:36,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:34:36,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:36,498 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:36,519 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:36,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:36,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-11-12 03:34:36,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097179806] [2020-11-12 03:34:36,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:34:36,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:36,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:34:36,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:34:36,521 INFO L87 Difference]: Start difference. First operand 2227 states and 3769 transitions. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:38,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:38,085 INFO L93 Difference]: Finished difference Result 3859 states and 6884 transitions. [2020-11-12 03:34:38,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 03:34:38,087 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:34:38,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:38,093 INFO L225 Difference]: With dead ends: 3859 [2020-11-12 03:34:38,093 INFO L226 Difference]: Without dead ends: 3589 [2020-11-12 03:34:38,094 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=698, Invalid=2164, Unknown=0, NotChecked=0, Total=2862 [2020-11-12 03:34:38,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-11-12 03:34:38,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 2252. [2020-11-12 03:34:38,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2252 states, 2188 states have (on average 1.7477148080438756) internal successors, (3824), 2251 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:38,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 3824 transitions. [2020-11-12 03:34:38,132 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 3824 transitions. Word has length 121 [2020-11-12 03:34:38,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:38,132 INFO L481 AbstractCegarLoop]: Abstraction has 2252 states and 3824 transitions. [2020-11-12 03:34:38,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:38,133 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 3824 transitions. [2020-11-12 03:34:38,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:34:38,134 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:38,134 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:38,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,177 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:38,336 INFO L429 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:38,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:38,336 INFO L82 PathProgramCache]: Analyzing trace with hash -620238782, now seen corresponding path program 172 times [2020-11-12 03:34:38,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:38,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577268986] [2020-11-12 03:34:38,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:38,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:39,011 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:39,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577268986] [2020-11-12 03:34:39,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359062092] [2020-11-12 03:34:39,012 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:39,104 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:34:39,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:39,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:34:39,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:39,156 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:34:39,222 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:39,242 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:39,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:39,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-11-12 03:34:39,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970856311] [2020-11-12 03:34:39,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:34:39,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:39,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:34:39,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:34:39,243 INFO L87 Difference]: Start difference. First operand 2252 states and 3824 transitions. Second operand has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:41,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:41,014 INFO L93 Difference]: Finished difference Result 3859 states and 6864 transitions. [2020-11-12 03:34:41,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-12 03:34:41,015 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:34:41,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:41,020 INFO L225 Difference]: With dead ends: 3859 [2020-11-12 03:34:41,020 INFO L226 Difference]: Without dead ends: 3589 [2020-11-12 03:34:41,021 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=723, Invalid=2357, Unknown=0, NotChecked=0, Total=3080 [2020-11-12 03:34:41,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-11-12 03:34:41,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 2277. [2020-11-12 03:34:41,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2277 states, 2213 states have (on average 1.7528242205151379) internal successors, (3879), 2276 states have internal predecessors, (3879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:41,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 3879 transitions. [2020-11-12 03:34:41,057 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 3879 transitions. Word has length 121 [2020-11-12 03:34:41,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:41,057 INFO L481 AbstractCegarLoop]: Abstraction has 2277 states and 3879 transitions. [2020-11-12 03:34:41,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:41,057 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 3879 transitions. [2020-11-12 03:34:41,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:34:41,059 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:41,059 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:41,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 178 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable182 [2020-11-12 03:34:41,260 INFO L429 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:41,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:41,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1541470368, now seen corresponding path program 173 times [2020-11-12 03:34:41,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:41,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641362032] [2020-11-12 03:34:41,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:41,889 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:41,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641362032] [2020-11-12 03:34:41,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850752057] [2020-11-12 03:34:41,889 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:41,987 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2020-11-12 03:34:41,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:41,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:34:41,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:42,083 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:42,103 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:42,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:42,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-11-12 03:34:42,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891720074] [2020-11-12 03:34:42,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:34:42,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:42,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:34:42,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:34:42,104 INFO L87 Difference]: Start difference. First operand 2277 states and 3879 transitions. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:43,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:43,694 INFO L93 Difference]: Finished difference Result 3859 states and 6844 transitions. [2020-11-12 03:34:43,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 03:34:43,696 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:34:43,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:43,703 INFO L225 Difference]: With dead ends: 3859 [2020-11-12 03:34:43,703 INFO L226 Difference]: Without dead ends: 3589 [2020-11-12 03:34:43,704 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=749, Invalid=2331, Unknown=0, NotChecked=0, Total=3080 [2020-11-12 03:34:43,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-11-12 03:34:43,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 2302. [2020-11-12 03:34:43,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2302 states, 2238 states have (on average 1.7578194816800714) internal successors, (3934), 2301 states have internal predecessors, (3934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:43,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 3934 transitions. [2020-11-12 03:34:43,747 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 3934 transitions. Word has length 121 [2020-11-12 03:34:43,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:43,747 INFO L481 AbstractCegarLoop]: Abstraction has 2302 states and 3934 transitions. [2020-11-12 03:34:43,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:43,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 3934 transitions. [2020-11-12 03:34:43,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:34:43,750 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:43,750 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:43,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,179 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:43,951 INFO L429 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:43,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:43,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1739306656, now seen corresponding path program 174 times [2020-11-12 03:34:43,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:43,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69039831] [2020-11-12 03:34:43,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:44,594 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:44,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69039831] [2020-11-12 03:34:44,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840534191] [2020-11-12 03:34:44,595 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:44,703 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-11-12 03:34:44,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:44,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:34:44,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:44,755 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:34:44,832 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:44,851 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:44,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:44,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-11-12 03:34:44,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409846551] [2020-11-12 03:34:44,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:34:44,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:44,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:34:44,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:34:44,853 INFO L87 Difference]: Start difference. First operand 2302 states and 3934 transitions. Second operand has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:46,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:46,965 INFO L93 Difference]: Finished difference Result 3859 states and 6824 transitions. [2020-11-12 03:34:46,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-12 03:34:46,967 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:34:46,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:46,972 INFO L225 Difference]: With dead ends: 3859 [2020-11-12 03:34:46,973 INFO L226 Difference]: Without dead ends: 3589 [2020-11-12 03:34:46,973 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=776, Invalid=2530, Unknown=0, NotChecked=0, Total=3306 [2020-11-12 03:34:46,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-11-12 03:34:47,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 2327. [2020-11-12 03:34:47,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2327 states, 2263 states have (on average 1.762704374723818) internal successors, (3989), 2326 states have internal predecessors, (3989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:47,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2327 states to 2327 states and 3989 transitions. [2020-11-12 03:34:47,021 INFO L78 Accepts]: Start accepts. Automaton has 2327 states and 3989 transitions. Word has length 121 [2020-11-12 03:34:47,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:47,021 INFO L481 AbstractCegarLoop]: Abstraction has 2327 states and 3989 transitions. [2020-11-12 03:34:47,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:47,021 INFO L276 IsEmpty]: Start isEmpty. Operand 2327 states and 3989 transitions. [2020-11-12 03:34:47,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:34:47,023 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:47,023 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:47,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,180 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:47,224 INFO L429 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:47,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:47,225 INFO L82 PathProgramCache]: Analyzing trace with hash 267092798, now seen corresponding path program 175 times [2020-11-12 03:34:47,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:47,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111934800] [2020-11-12 03:34:47,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:47,883 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:47,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111934800] [2020-11-12 03:34:47,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000565427] [2020-11-12 03:34:47,884 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:47,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:34:47,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:48,061 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:48,080 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:48,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:48,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-11-12 03:34:48,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790068020] [2020-11-12 03:34:48,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:34:48,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:48,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:34:48,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:34:48,083 INFO L87 Difference]: Start difference. First operand 2327 states and 3989 transitions. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:49,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:49,977 INFO L93 Difference]: Finished difference Result 3859 states and 6804 transitions. [2020-11-12 03:34:49,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 03:34:49,980 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:34:49,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:49,987 INFO L225 Difference]: With dead ends: 3859 [2020-11-12 03:34:49,987 INFO L226 Difference]: Without dead ends: 3589 [2020-11-12 03:34:49,988 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=816, Invalid=2490, Unknown=0, NotChecked=0, Total=3306 [2020-11-12 03:34:49,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-11-12 03:34:50,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 2352. [2020-11-12 03:34:50,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2352 states, 2288 states have (on average 1.7674825174825175) internal successors, (4044), 2351 states have internal predecessors, (4044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:50,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 4044 transitions. [2020-11-12 03:34:50,030 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 4044 transitions. Word has length 121 [2020-11-12 03:34:50,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:50,030 INFO L481 AbstractCegarLoop]: Abstraction has 2352 states and 4044 transitions. [2020-11-12 03:34:50,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:50,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 4044 transitions. [2020-11-12 03:34:50,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:34:50,034 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:50,034 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:50,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,181 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:50,236 INFO L429 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:50,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:50,236 INFO L82 PathProgramCache]: Analyzing trace with hash -210877826, now seen corresponding path program 176 times [2020-11-12 03:34:50,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:50,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469544971] [2020-11-12 03:34:50,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:50,924 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:50,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469544971] [2020-11-12 03:34:50,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918730652] [2020-11-12 03:34:50,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:51,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:34:51,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:51,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:34:51,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:51,080 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:34:51,178 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:51,200 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:51,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:51,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-11-12 03:34:51,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804888051] [2020-11-12 03:34:51,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:34:51,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:51,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:34:51,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:34:51,201 INFO L87 Difference]: Start difference. First operand 2352 states and 4044 transitions. Second operand has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:53,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:53,357 INFO L93 Difference]: Finished difference Result 3859 states and 6784 transitions. [2020-11-12 03:34:53,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-11-12 03:34:53,358 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:34:53,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:53,364 INFO L225 Difference]: With dead ends: 3859 [2020-11-12 03:34:53,365 INFO L226 Difference]: Without dead ends: 3589 [2020-11-12 03:34:53,365 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=845, Invalid=2695, Unknown=0, NotChecked=0, Total=3540 [2020-11-12 03:34:53,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-11-12 03:34:53,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 2377. [2020-11-12 03:34:53,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2377 states, 2313 states have (on average 1.7721573713791612) internal successors, (4099), 2376 states have internal predecessors, (4099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:53,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2377 states to 2377 states and 4099 transitions. [2020-11-12 03:34:53,408 INFO L78 Accepts]: Start accepts. Automaton has 2377 states and 4099 transitions. Word has length 121 [2020-11-12 03:34:53,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:53,409 INFO L481 AbstractCegarLoop]: Abstraction has 2377 states and 4099 transitions. [2020-11-12 03:34:53,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:53,409 INFO L276 IsEmpty]: Start isEmpty. Operand 2377 states and 4099 transitions. [2020-11-12 03:34:53,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:34:53,411 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:53,411 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:53,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,182 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:53,612 INFO L429 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:53,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:53,613 INFO L82 PathProgramCache]: Analyzing trace with hash 935959708, now seen corresponding path program 177 times [2020-11-12 03:34:53,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:53,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287216414] [2020-11-12 03:34:53,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:54,179 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:54,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287216414] [2020-11-12 03:34:54,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903682758] [2020-11-12 03:34:54,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:54,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-12 03:34:54,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:54,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:34:54,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:54,370 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:54,393 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:54,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:54,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-11-12 03:34:54,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109745270] [2020-11-12 03:34:54,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:34:54,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:54,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:34:54,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:34:54,394 INFO L87 Difference]: Start difference. First operand 2377 states and 4099 transitions. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:56,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:56,299 INFO L93 Difference]: Finished difference Result 3859 states and 6764 transitions. [2020-11-12 03:34:56,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 03:34:56,301 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:34:56,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:56,324 INFO L225 Difference]: With dead ends: 3859 [2020-11-12 03:34:56,325 INFO L226 Difference]: Without dead ends: 3589 [2020-11-12 03:34:56,325 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=899, Invalid=2641, Unknown=0, NotChecked=0, Total=3540 [2020-11-12 03:34:56,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-11-12 03:34:56,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 2402. [2020-11-12 03:34:56,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2402 states, 2338 states have (on average 1.776732249786142) internal successors, (4154), 2401 states have internal predecessors, (4154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:56,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2402 states to 2402 states and 4154 transitions. [2020-11-12 03:34:56,361 INFO L78 Accepts]: Start accepts. Automaton has 2402 states and 4154 transitions. Word has length 121 [2020-11-12 03:34:56,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:56,362 INFO L481 AbstractCegarLoop]: Abstraction has 2402 states and 4154 transitions. [2020-11-12 03:34:56,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:56,362 INFO L276 IsEmpty]: Start isEmpty. Operand 2402 states and 4154 transitions. [2020-11-12 03:34:56,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:34:56,365 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:56,365 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:34:56,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 183 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable187 [2020-11-12 03:34:56,566 INFO L429 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:34:56,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:34:56,566 INFO L82 PathProgramCache]: Analyzing trace with hash -2070516772, now seen corresponding path program 178 times [2020-11-12 03:34:56,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:34:56,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422902351] [2020-11-12 03:34:56,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:34:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:34:57,199 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:57,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422902351] [2020-11-12 03:34:57,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802886056] [2020-11-12 03:34:57,200 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:34:57,296 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:34:57,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:34:57,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:34:57,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:34:57,356 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:34:57,442 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:34:57,460 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:34:57,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:34:57,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-11-12 03:34:57,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444079354] [2020-11-12 03:34:57,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:34:57,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:34:57,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:34:57,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:34:57,462 INFO L87 Difference]: Start difference. First operand 2402 states and 4154 transitions. Second operand has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:59,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:34:59,801 INFO L93 Difference]: Finished difference Result 3859 states and 6744 transitions. [2020-11-12 03:34:59,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-11-12 03:34:59,803 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:34:59,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:34:59,807 INFO L225 Difference]: With dead ends: 3859 [2020-11-12 03:34:59,808 INFO L226 Difference]: Without dead ends: 3589 [2020-11-12 03:34:59,808 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=930, Invalid=2852, Unknown=0, NotChecked=0, Total=3782 [2020-11-12 03:34:59,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-11-12 03:34:59,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 2427. [2020-11-12 03:34:59,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2427 states, 2363 states have (on average 1.7812103258569616) internal successors, (4209), 2426 states have internal predecessors, (4209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:59,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 4209 transitions. [2020-11-12 03:34:59,862 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 4209 transitions. Word has length 121 [2020-11-12 03:34:59,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:34:59,862 INFO L481 AbstractCegarLoop]: Abstraction has 2427 states and 4209 transitions. [2020-11-12 03:34:59,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:34:59,862 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 4209 transitions. [2020-11-12 03:34:59,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:34:59,865 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:34:59,865 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:00,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 184 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable188 [2020-11-12 03:35:00,066 INFO L429 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:00,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:00,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1243100026, now seen corresponding path program 179 times [2020-11-12 03:35:00,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:00,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647241306] [2020-11-12 03:35:00,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:00,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:00,699 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:00,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647241306] [2020-11-12 03:35:00,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186583211] [2020-11-12 03:35:00,699 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:00,795 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2020-11-12 03:35:00,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:35:00,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:35:00,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:00,887 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:00,903 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:00,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:00,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-11-12 03:35:00,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795303692] [2020-11-12 03:35:00,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:35:00,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:00,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:35:00,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:35:00,905 INFO L87 Difference]: Start difference. First operand 2427 states and 4209 transitions. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:03,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:03,103 INFO L93 Difference]: Finished difference Result 3859 states and 6724 transitions. [2020-11-12 03:35:03,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 03:35:03,105 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:35:03,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:03,111 INFO L225 Difference]: With dead ends: 3859 [2020-11-12 03:35:03,111 INFO L226 Difference]: Without dead ends: 3589 [2020-11-12 03:35:03,112 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=998, Invalid=2784, Unknown=0, NotChecked=0, Total=3782 [2020-11-12 03:35:03,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-11-12 03:35:03,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 2452. [2020-11-12 03:35:03,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 2388 states have (on average 1.7855946398659968) internal successors, (4264), 2451 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:03,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 4264 transitions. [2020-11-12 03:35:03,185 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 4264 transitions. Word has length 121 [2020-11-12 03:35:03,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:03,185 INFO L481 AbstractCegarLoop]: Abstraction has 2452 states and 4264 transitions. [2020-11-12 03:35:03,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:03,185 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 4264 transitions. [2020-11-12 03:35:03,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:35:03,191 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:03,191 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:03,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2020-11-12 03:35:03,405 INFO L429 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:03,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:03,406 INFO L82 PathProgramCache]: Analyzing trace with hash 579015354, now seen corresponding path program 180 times [2020-11-12 03:35:03,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:03,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656703605] [2020-11-12 03:35:03,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:04,033 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:04,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656703605] [2020-11-12 03:35:04,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243447458] [2020-11-12 03:35:04,034 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:04,143 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-11-12 03:35:04,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:35:04,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:35:04,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:04,202 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:35:04,283 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:04,301 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:04,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:04,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-11-12 03:35:04,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332292129] [2020-11-12 03:35:04,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:35:04,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:04,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:35:04,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:35:04,303 INFO L87 Difference]: Start difference. First operand 2452 states and 4264 transitions. Second operand has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:07,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:07,047 INFO L93 Difference]: Finished difference Result 3859 states and 6704 transitions. [2020-11-12 03:35:07,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-11-12 03:35:07,049 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:35:07,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:07,055 INFO L225 Difference]: With dead ends: 3859 [2020-11-12 03:35:07,055 INFO L226 Difference]: Without dead ends: 3589 [2020-11-12 03:35:07,056 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1041 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1031, Invalid=3001, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 03:35:07,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-11-12 03:35:07,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 2477. [2020-11-12 03:35:07,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2413 states have (on average 1.7898881060920016) internal successors, (4319), 2476 states have internal predecessors, (4319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:07,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 4319 transitions. [2020-11-12 03:35:07,104 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 4319 transitions. Word has length 121 [2020-11-12 03:35:07,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:07,104 INFO L481 AbstractCegarLoop]: Abstraction has 2477 states and 4319 transitions. [2020-11-12 03:35:07,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:07,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 4319 transitions. [2020-11-12 03:35:07,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:35:07,108 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:07,108 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:07,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190,186 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:07,311 INFO L429 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:07,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:07,312 INFO L82 PathProgramCache]: Analyzing trace with hash 877537240, now seen corresponding path program 181 times [2020-11-12 03:35:07,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:07,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27979352] [2020-11-12 03:35:07,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:07,980 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:07,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27979352] [2020-11-12 03:35:07,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221312290] [2020-11-12 03:35:07,980 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 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:08,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:08,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:35:08,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:08,166 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:08,182 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:08,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:08,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-11-12 03:35:08,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211309474] [2020-11-12 03:35:08,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:35:08,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:08,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:35:08,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:35:08,184 INFO L87 Difference]: Start difference. First operand 2477 states and 4319 transitions. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:10,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:10,543 INFO L93 Difference]: Finished difference Result 3859 states and 6684 transitions. [2020-11-12 03:35:10,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-12 03:35:10,545 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:35:10,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:10,552 INFO L225 Difference]: With dead ends: 3859 [2020-11-12 03:35:10,552 INFO L226 Difference]: Without dead ends: 3589 [2020-11-12 03:35:10,554 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1112 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1113, Invalid=2919, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 03:35:10,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-11-12 03:35:10,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 2502. [2020-11-12 03:35:10,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 2438 states have (on average 1.794093519278097) internal successors, (4374), 2501 states have internal predecessors, (4374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:10,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 4374 transitions. [2020-11-12 03:35:10,600 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 4374 transitions. Word has length 121 [2020-11-12 03:35:10,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:10,600 INFO L481 AbstractCegarLoop]: Abstraction has 2502 states and 4374 transitions. [2020-11-12 03:35:10,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:10,600 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 4374 transitions. [2020-11-12 03:35:10,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:35:10,604 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:10,604 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:10,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191,187 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:10,807 INFO L429 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:10,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:10,808 INFO L82 PathProgramCache]: Analyzing trace with hash -743762152, now seen corresponding path program 182 times [2020-11-12 03:35:10,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:10,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261492841] [2020-11-12 03:35:10,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:11,420 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:11,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261492841] [2020-11-12 03:35:11,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137734147] [2020-11-12 03:35:11,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:11,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:35:11,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:35:11,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:35:11,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:11,561 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:35:11,636 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:11,652 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:11,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:11,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-11-12 03:35:11,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649447366] [2020-11-12 03:35:11,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:35:11,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:11,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:35:11,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:35:11,653 INFO L87 Difference]: Start difference. First operand 2502 states and 4374 transitions. Second operand has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:14,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:14,326 INFO L93 Difference]: Finished difference Result 3904 states and 6742 transitions. [2020-11-12 03:35:14,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-11-12 03:35:14,327 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:35:14,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:14,334 INFO L225 Difference]: With dead ends: 3904 [2020-11-12 03:35:14,334 INFO L226 Difference]: Without dead ends: 3634 [2020-11-12 03:35:14,335 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1147 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1148, Invalid=3142, Unknown=0, NotChecked=0, Total=4290 [2020-11-12 03:35:14,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3634 states. [2020-11-12 03:35:14,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3634 to 2527. [2020-11-12 03:35:14,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2527 states, 2463 states have (on average 1.8006496142915145) internal successors, (4435), 2526 states have internal predecessors, (4435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:14,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2527 states to 2527 states and 4435 transitions. [2020-11-12 03:35:14,376 INFO L78 Accepts]: Start accepts. Automaton has 2527 states and 4435 transitions. Word has length 121 [2020-11-12 03:35:14,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:14,377 INFO L481 AbstractCegarLoop]: Abstraction has 2527 states and 4435 transitions. [2020-11-12 03:35:14,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:14,377 INFO L276 IsEmpty]: Start isEmpty. Operand 2527 states and 4435 transitions. [2020-11-12 03:35:14,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:35:14,379 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:14,379 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:14,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,188 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:14,580 INFO L429 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:14,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:14,581 INFO L82 PathProgramCache]: Analyzing trace with hash 390328012, now seen corresponding path program 183 times [2020-11-12 03:35:14,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:14,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209818584] [2020-11-12 03:35:14,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:14,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:15,252 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:15,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209818584] [2020-11-12 03:35:15,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848666830] [2020-11-12 03:35:15,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:15,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-12 03:35:15,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:35:15,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 03:35:15,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:15,452 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:15,467 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:15,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:15,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-11-12 03:35:15,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771932762] [2020-11-12 03:35:15,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:35:15,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:15,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:35:15,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:35:15,469 INFO L87 Difference]: Start difference. First operand 2527 states and 4435 transitions. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:17,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:17,965 INFO L93 Difference]: Finished difference Result 4966 states and 8154 transitions. [2020-11-12 03:35:17,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-12 03:35:17,967 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 03:35:17,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:17,976 INFO L225 Difference]: With dead ends: 4966 [2020-11-12 03:35:17,977 INFO L226 Difference]: Without dead ends: 4681 [2020-11-12 03:35:17,978 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1218 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1245, Invalid=3045, Unknown=0, NotChecked=0, Total=4290 [2020-11-12 03:35:17,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2020-11-12 03:35:18,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 2612. [2020-11-12 03:35:18,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2612 states, 2548 states have (on average 1.8182888540031397) internal successors, (4633), 2611 states have internal predecessors, (4633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:18,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2612 states to 2612 states and 4633 transitions. [2020-11-12 03:35:18,037 INFO L78 Accepts]: Start accepts. Automaton has 2612 states and 4633 transitions. Word has length 121 [2020-11-12 03:35:18,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:18,037 INFO L481 AbstractCegarLoop]: Abstraction has 2612 states and 4633 transitions. [2020-11-12 03:35:18,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:18,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2612 states and 4633 transitions. [2020-11-12 03:35:18,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 03:35:18,042 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:18,042 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:18,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193,189 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:18,243 INFO L429 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:18,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:18,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1230305204, now seen corresponding path program 184 times [2020-11-12 03:35:18,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:18,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839085114] [2020-11-12 03:35:18,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:18,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:19,132 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:19,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839085114] [2020-11-12 03:35:19,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483987032] [2020-11-12 03:35:19,133 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:19,254 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:35:19,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:35:19,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:35:19,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:19,311 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:35:19,370 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:19,387 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:19,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:19,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-11-12 03:35:19,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049385430] [2020-11-12 03:35:19,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:35:19,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:19,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:35:19,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:35:19,389 INFO L87 Difference]: Start difference. First operand 2612 states and 4633 transitions. 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) [2020-11-12 03:35:22,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:22,612 INFO L93 Difference]: Finished difference Result 4346 states and 7507 transitions. [2020-11-12 03:35:22,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-11-12 03:35:22,614 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 [2020-11-12 03:35:22,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:22,620 INFO L225 Difference]: With dead ends: 4346 [2020-11-12 03:35:22,620 INFO L226 Difference]: Without dead ends: 3774 [2020-11-12 03:35:22,621 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1374 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1326, Invalid=3644, Unknown=0, NotChecked=0, Total=4970 [2020-11-12 03:35:22,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3774 states. [2020-11-12 03:35:22,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3774 to 2507. [2020-11-12 03:35:22,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2443 states have (on average 1.8112975849365534) internal successors, (4425), 2506 states have internal predecessors, (4425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:22,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 4425 transitions. [2020-11-12 03:35:22,671 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 4425 transitions. Word has length 121 [2020-11-12 03:35:22,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:22,671 INFO L481 AbstractCegarLoop]: Abstraction has 2507 states and 4425 transitions. [2020-11-12 03:35:22,671 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) [2020-11-12 03:35:22,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 4425 transitions. [2020-11-12 03:35:22,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:35:22,676 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:22,676 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:22,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable194 [2020-11-12 03:35:22,883 INFO L429 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:22,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:22,884 INFO L82 PathProgramCache]: Analyzing trace with hash 515030498, now seen corresponding path program 185 times [2020-11-12 03:35:22,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:22,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078819619] [2020-11-12 03:35:22,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:23,768 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:23,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078819619] [2020-11-12 03:35:23,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981276777] [2020-11-12 03:35:23,769 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:23,872 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2020-11-12 03:35:23,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:35:23,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:35:23,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:23,981 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:23,994 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:24,021 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:24,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:24,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-11-12 03:35:24,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533289521] [2020-11-12 03:35:24,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:35:24,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:24,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:35:24,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:35:24,023 INFO L87 Difference]: Start difference. First operand 2507 states and 4425 transitions. Second operand has 28 states, 28 states have (on average 5.25) internal successors, (147), 28 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:25,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:25,791 INFO L93 Difference]: Finished difference Result 3765 states and 6669 transitions. [2020-11-12 03:35:25,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-12 03:35:25,793 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.25) internal successors, (147), 28 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:35:25,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:25,799 INFO L225 Difference]: With dead ends: 3765 [2020-11-12 03:35:25,800 INFO L226 Difference]: Without dead ends: 3431 [2020-11-12 03:35:25,800 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=760, Invalid=2102, Unknown=0, NotChecked=0, Total=2862 [2020-11-12 03:35:25,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3431 states. [2020-11-12 03:35:25,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3431 to 2582. [2020-11-12 03:35:25,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2582 states, 2518 states have (on average 1.8169181890389199) internal successors, (4575), 2581 states have internal predecessors, (4575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:25,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2582 states to 2582 states and 4575 transitions. [2020-11-12 03:35:25,850 INFO L78 Accepts]: Start accepts. Automaton has 2582 states and 4575 transitions. Word has length 126 [2020-11-12 03:35:25,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:25,850 INFO L481 AbstractCegarLoop]: Abstraction has 2582 states and 4575 transitions. [2020-11-12 03:35:25,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.25) internal successors, (147), 28 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:25,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2582 states and 4575 transitions. [2020-11-12 03:35:25,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:35:25,854 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:25,854 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:26,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,191 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:26,057 INFO L429 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:26,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:26,058 INFO L82 PathProgramCache]: Analyzing trace with hash -797864060, now seen corresponding path program 186 times [2020-11-12 03:35:26,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:26,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127165764] [2020-11-12 03:35:26,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:26,955 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:26,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127165764] [2020-11-12 03:35:26,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734796490] [2020-11-12 03:35:26,956 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:27,071 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-11-12 03:35:27,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:35:27,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:35:27,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:27,100 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:27,138 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:27,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:27,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-11-12 03:35:27,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500152578] [2020-11-12 03:35:27,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:35:27,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:27,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:35:27,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:35:27,141 INFO L87 Difference]: Start difference. First operand 2582 states and 4575 transitions. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:28,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:28,550 INFO L93 Difference]: Finished difference Result 4459 states and 8250 transitions. [2020-11-12 03:35:28,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-12 03:35:28,552 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:35:28,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:28,559 INFO L225 Difference]: With dead ends: 4459 [2020-11-12 03:35:28,560 INFO L226 Difference]: Without dead ends: 4189 [2020-11-12 03:35:28,560 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=616, Invalid=1640, Unknown=0, NotChecked=0, Total=2256 [2020-11-12 03:35:28,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4189 states. [2020-11-12 03:35:28,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4189 to 2642. [2020-11-12 03:35:28,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2642 states, 2578 states have (on average 1.8076027928626843) internal successors, (4660), 2641 states have internal predecessors, (4660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:28,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2642 states to 2642 states and 4660 transitions. [2020-11-12 03:35:28,610 INFO L78 Accepts]: Start accepts. Automaton has 2642 states and 4660 transitions. Word has length 126 [2020-11-12 03:35:28,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:28,611 INFO L481 AbstractCegarLoop]: Abstraction has 2642 states and 4660 transitions. [2020-11-12 03:35:28,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:28,611 INFO L276 IsEmpty]: Start isEmpty. Operand 2642 states and 4660 transitions. [2020-11-12 03:35:28,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:35:28,615 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:28,615 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:28,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196,192 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:28,816 INFO L429 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:28,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:28,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1322205948, now seen corresponding path program 187 times [2020-11-12 03:35:28,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:28,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679052806] [2020-11-12 03:35:28,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:29,700 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:29,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679052806] [2020-11-12 03:35:29,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966581815] [2020-11-12 03:35:29,701 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:29,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:35:29,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:29,859 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:35:29,883 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:29,934 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:29,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:29,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-11-12 03:35:29,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038550811] [2020-11-12 03:35:29,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:35:29,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:29,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:35:29,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:35:29,936 INFO L87 Difference]: Start difference. First operand 2642 states and 4660 transitions. Second operand has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:31,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:31,654 INFO L93 Difference]: Finished difference Result 4389 states and 8085 transitions. [2020-11-12 03:35:31,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-12 03:35:31,656 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:35:31,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:31,662 INFO L225 Difference]: With dead ends: 4389 [2020-11-12 03:35:31,662 INFO L226 Difference]: Without dead ends: 4119 [2020-11-12 03:35:31,663 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=683, Invalid=1969, Unknown=0, NotChecked=0, Total=2652 [2020-11-12 03:35:31,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4119 states. [2020-11-12 03:35:31,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4119 to 2667. [2020-11-12 03:35:31,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2667 states, 2603 states have (on average 1.799846331156358) internal successors, (4685), 2666 states have internal predecessors, (4685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:31,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2667 states to 2667 states and 4685 transitions. [2020-11-12 03:35:31,718 INFO L78 Accepts]: Start accepts. Automaton has 2667 states and 4685 transitions. Word has length 126 [2020-11-12 03:35:31,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:31,718 INFO L481 AbstractCegarLoop]: Abstraction has 2667 states and 4685 transitions. [2020-11-12 03:35:31,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:31,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2667 states and 4685 transitions. [2020-11-12 03:35:31,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:35:31,722 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:31,722 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:31,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,193 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:31,923 INFO L429 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:31,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:31,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1031012196, now seen corresponding path program 188 times [2020-11-12 03:35:31,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:31,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199079295] [2020-11-12 03:35:31,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:32,725 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:32,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199079295] [2020-11-12 03:35:32,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167525239] [2020-11-12 03:35:32,726 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 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:32,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:35:32,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:35:32,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:35:32,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:32,853 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:32,878 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:32,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:32,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-11-12 03:35:32,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216716392] [2020-11-12 03:35:32,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:35:32,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:32,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:35:32,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:35:32,880 INFO L87 Difference]: Start difference. First operand 2667 states and 4685 transitions. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:34,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:34,398 INFO L93 Difference]: Finished difference Result 4389 states and 8060 transitions. [2020-11-12 03:35:34,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-12 03:35:34,400 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:35:34,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:34,407 INFO L225 Difference]: With dead ends: 4389 [2020-11-12 03:35:34,408 INFO L226 Difference]: Without dead ends: 4119 [2020-11-12 03:35:34,408 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=621, Invalid=1829, Unknown=0, NotChecked=0, Total=2450 [2020-11-12 03:35:34,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4119 states. [2020-11-12 03:35:34,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4119 to 2692. [2020-11-12 03:35:34,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2628 states have (on average 1.7922374429223744) internal successors, (4710), 2691 states have internal predecessors, (4710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:34,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 4710 transitions. [2020-11-12 03:35:34,462 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 4710 transitions. Word has length 126 [2020-11-12 03:35:34,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:34,462 INFO L481 AbstractCegarLoop]: Abstraction has 2692 states and 4710 transitions. [2020-11-12 03:35:34,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:34,462 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 4710 transitions. [2020-11-12 03:35:34,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:35:34,465 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:34,466 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:34,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198,194 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:34,667 INFO L429 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:34,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:34,667 INFO L82 PathProgramCache]: Analyzing trace with hash 607027164, now seen corresponding path program 189 times [2020-11-12 03:35:34,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:34,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790878370] [2020-11-12 03:35:34,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:35,527 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:35,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790878370] [2020-11-12 03:35:35,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057354152] [2020-11-12 03:35:35,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:35,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-11-12 03:35:35,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:35:35,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:35:35,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:35,706 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:35:35,733 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:35,757 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:35,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:35,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-11-12 03:35:35,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363787720] [2020-11-12 03:35:35,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:35:35,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:35,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:35:35,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:35:35,759 INFO L87 Difference]: Start difference. First operand 2692 states and 4710 transitions. Second operand has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:37,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:37,714 INFO L93 Difference]: Finished difference Result 4364 states and 7985 transitions. [2020-11-12 03:35:37,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-12 03:35:37,717 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:35:37,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:37,724 INFO L225 Difference]: With dead ends: 4364 [2020-11-12 03:35:37,724 INFO L226 Difference]: Without dead ends: 4094 [2020-11-12 03:35:37,725 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=696, Invalid=2166, Unknown=0, NotChecked=0, Total=2862 [2020-11-12 03:35:37,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4094 states. [2020-11-12 03:35:37,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4094 to 2692. [2020-11-12 03:35:37,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2628 states have (on average 1.7922374429223744) internal successors, (4710), 2691 states have internal predecessors, (4710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:37,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 4710 transitions. [2020-11-12 03:35:37,781 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 4710 transitions. Word has length 126 [2020-11-12 03:35:37,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:37,781 INFO L481 AbstractCegarLoop]: Abstraction has 2692 states and 4710 transitions. [2020-11-12 03:35:37,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:37,781 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 4710 transitions. [2020-11-12 03:35:37,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:35:37,785 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:37,785 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:37,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2020-11-12 03:35:37,986 INFO L429 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:37,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:37,987 INFO L82 PathProgramCache]: Analyzing trace with hash 2070733818, now seen corresponding path program 190 times [2020-11-12 03:35:37,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:37,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278970794] [2020-11-12 03:35:37,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:38,814 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:38,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278970794] [2020-11-12 03:35:38,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081112178] [2020-11-12 03:35:38,815 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:38,912 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:35:38,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:35:38,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:35:38,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:38,946 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:38,970 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:38,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:38,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-11-12 03:35:38,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035598523] [2020-11-12 03:35:38,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:35:38,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:38,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:35:38,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:35:38,972 INFO L87 Difference]: Start difference. First operand 2692 states and 4710 transitions. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:40,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:40,767 INFO L93 Difference]: Finished difference Result 4314 states and 7885 transitions. [2020-11-12 03:35:40,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-12 03:35:40,769 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:35:40,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:40,777 INFO L225 Difference]: With dead ends: 4314 [2020-11-12 03:35:40,777 INFO L226 Difference]: Without dead ends: 4044 [2020-11-12 03:35:40,778 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=642, Invalid=2010, Unknown=0, NotChecked=0, Total=2652 [2020-11-12 03:35:40,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4044 states. [2020-11-12 03:35:40,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4044 to 2692. [2020-11-12 03:35:40,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2628 states have (on average 1.7922374429223744) internal successors, (4710), 2691 states have internal predecessors, (4710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:40,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 4710 transitions. [2020-11-12 03:35:40,834 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 4710 transitions. Word has length 126 [2020-11-12 03:35:40,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:40,834 INFO L481 AbstractCegarLoop]: Abstraction has 2692 states and 4710 transitions. [2020-11-12 03:35:40,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:40,834 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 4710 transitions. [2020-11-12 03:35:40,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:35:40,867 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:40,868 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:41,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 196 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable200 [2020-11-12 03:35:41,069 INFO L429 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:41,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:41,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1224117446, now seen corresponding path program 191 times [2020-11-12 03:35:41,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:41,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955235823] [2020-11-12 03:35:41,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:41,830 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:41,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955235823] [2020-11-12 03:35:41,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624342381] [2020-11-12 03:35:41,830 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:41,933 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-11-12 03:35:41,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:35:41,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:35:41,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:41,993 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:35:42,022 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:42,046 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:42,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:42,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-11-12 03:35:42,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799723694] [2020-11-12 03:35:42,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:35:42,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:42,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:35:42,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:35:42,048 INFO L87 Difference]: Start difference. First operand 2692 states and 4710 transitions. Second operand has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:44,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:44,202 INFO L93 Difference]: Finished difference Result 4264 states and 7785 transitions. [2020-11-12 03:35:44,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-12 03:35:44,204 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:35:44,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:44,212 INFO L225 Difference]: With dead ends: 4264 [2020-11-12 03:35:44,212 INFO L226 Difference]: Without dead ends: 3994 [2020-11-12 03:35:44,213 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 621 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=725, Invalid=2355, Unknown=0, NotChecked=0, Total=3080 [2020-11-12 03:35:44,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2020-11-12 03:35:44,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 2692. [2020-11-12 03:35:44,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2628 states have (on average 1.7922374429223744) internal successors, (4710), 2691 states have internal predecessors, (4710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:44,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 4710 transitions. [2020-11-12 03:35:44,266 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 4710 transitions. Word has length 126 [2020-11-12 03:35:44,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:44,266 INFO L481 AbstractCegarLoop]: Abstraction has 2692 states and 4710 transitions. [2020-11-12 03:35:44,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:44,267 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 4710 transitions. [2020-11-12 03:35:44,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:35:44,270 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:44,270 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:44,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 197 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2020-11-12 03:35:44,471 INFO L429 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:44,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:44,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1943192792, now seen corresponding path program 192 times [2020-11-12 03:35:44,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:44,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465898628] [2020-11-12 03:35:44,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:45,275 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:45,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465898628] [2020-11-12 03:35:45,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125692085] [2020-11-12 03:35:45,276 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 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:45,391 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-11-12 03:35:45,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:35:45,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:35:45,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:45,426 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:45,448 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:45,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:45,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-11-12 03:35:45,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209370242] [2020-11-12 03:35:45,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:35:45,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:45,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:35:45,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:35:45,451 INFO L87 Difference]: Start difference. First operand 2692 states and 4710 transitions. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:47,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:47,325 INFO L93 Difference]: Finished difference Result 4214 states and 7685 transitions. [2020-11-12 03:35:47,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 03:35:47,327 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:35:47,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:47,334 INFO L225 Difference]: With dead ends: 4214 [2020-11-12 03:35:47,334 INFO L226 Difference]: Without dead ends: 3944 [2020-11-12 03:35:47,335 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=679, Invalid=2183, Unknown=0, NotChecked=0, Total=2862 [2020-11-12 03:35:47,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3944 states. [2020-11-12 03:35:47,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3944 to 2692. [2020-11-12 03:35:47,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2628 states have (on average 1.7922374429223744) internal successors, (4710), 2691 states have internal predecessors, (4710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:47,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 4710 transitions. [2020-11-12 03:35:47,384 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 4710 transitions. Word has length 126 [2020-11-12 03:35:47,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:47,384 INFO L481 AbstractCegarLoop]: Abstraction has 2692 states and 4710 transitions. [2020-11-12 03:35:47,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:47,385 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 4710 transitions. [2020-11-12 03:35:47,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:35:47,388 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:47,388 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:47,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2020-11-12 03:35:47,589 INFO L429 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:47,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:47,590 INFO L82 PathProgramCache]: Analyzing trace with hash -943889384, now seen corresponding path program 193 times [2020-11-12 03:35:47,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:47,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131486773] [2020-11-12 03:35:47,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:48,443 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:48,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131486773] [2020-11-12 03:35:48,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940548545] [2020-11-12 03:35:48,443 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:48,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:35:48,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:48,596 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:35:48,626 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:48,648 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:48,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:48,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-11-12 03:35:48,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913147656] [2020-11-12 03:35:48,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:35:48,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:48,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:35:48,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:35:48,650 INFO L87 Difference]: Start difference. First operand 2692 states and 4710 transitions. Second operand has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:50,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:50,949 INFO L93 Difference]: Finished difference Result 4164 states and 7585 transitions. [2020-11-12 03:35:50,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-12 03:35:50,951 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:35:50,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:50,957 INFO L225 Difference]: With dead ends: 4164 [2020-11-12 03:35:50,957 INFO L226 Difference]: Without dead ends: 3894 [2020-11-12 03:35:50,958 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=770, Invalid=2536, Unknown=0, NotChecked=0, Total=3306 [2020-11-12 03:35:50,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3894 states. [2020-11-12 03:35:50,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3894 to 2692. [2020-11-12 03:35:51,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2628 states have (on average 1.7922374429223744) internal successors, (4710), 2691 states have internal predecessors, (4710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:51,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 4710 transitions. [2020-11-12 03:35:51,005 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 4710 transitions. Word has length 126 [2020-11-12 03:35:51,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:51,005 INFO L481 AbstractCegarLoop]: Abstraction has 2692 states and 4710 transitions. [2020-11-12 03:35:51,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:51,005 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 4710 transitions. [2020-11-12 03:35:51,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:35:51,008 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:51,008 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:51,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203,199 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:51,209 INFO L429 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:51,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:51,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1865120970, now seen corresponding path program 194 times [2020-11-12 03:35:51,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:51,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016443976] [2020-11-12 03:35:51,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:51,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:51,941 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:51,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016443976] [2020-11-12 03:35:51,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351148832] [2020-11-12 03:35:51,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:52,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:35:52,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:35:52,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:35:52,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:52,105 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:52,126 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:52,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:52,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-11-12 03:35:52,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48639921] [2020-11-12 03:35:52,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:35:52,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:52,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:35:52,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:35:52,128 INFO L87 Difference]: Start difference. First operand 2692 states and 4710 transitions. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:54,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:54,217 INFO L93 Difference]: Finished difference Result 4114 states and 7485 transitions. [2020-11-12 03:35:54,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 03:35:54,219 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:35:54,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:54,227 INFO L225 Difference]: With dead ends: 4114 [2020-11-12 03:35:54,227 INFO L226 Difference]: Without dead ends: 3844 [2020-11-12 03:35:54,227 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=732, Invalid=2348, Unknown=0, NotChecked=0, Total=3080 [2020-11-12 03:35:54,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3844 states. [2020-11-12 03:35:54,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3844 to 2692. [2020-11-12 03:35:54,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2628 states have (on average 1.7922374429223744) internal successors, (4710), 2691 states have internal predecessors, (4710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:54,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 4710 transitions. [2020-11-12 03:35:54,279 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 4710 transitions. Word has length 126 [2020-11-12 03:35:54,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:54,279 INFO L481 AbstractCegarLoop]: Abstraction has 2692 states and 4710 transitions. [2020-11-12 03:35:54,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:54,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 4710 transitions. [2020-11-12 03:35:54,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:35:54,281 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:54,281 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:54,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 200 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable204 [2020-11-12 03:35:54,482 INFO L429 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:54,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:54,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1415656054, now seen corresponding path program 195 times [2020-11-12 03:35:54,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:54,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524842197] [2020-11-12 03:35:54,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:55,277 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:55,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524842197] [2020-11-12 03:35:55,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521878743] [2020-11-12 03:35:55,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:55,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-11-12 03:35:55,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:35:55,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:35:55,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:55,459 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:35:55,492 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:55,541 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:55,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:55,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-11-12 03:35:55,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732245984] [2020-11-12 03:35:55,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:35:55,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:55,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:35:55,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:35:55,543 INFO L87 Difference]: Start difference. First operand 2692 states and 4710 transitions. Second operand has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:58,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:35:58,042 INFO L93 Difference]: Finished difference Result 4064 states and 7385 transitions. [2020-11-12 03:35:58,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-11-12 03:35:58,045 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:35:58,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:35:58,052 INFO L225 Difference]: With dead ends: 4064 [2020-11-12 03:35:58,052 INFO L226 Difference]: Without dead ends: 3794 [2020-11-12 03:35:58,053 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=831, Invalid=2709, Unknown=0, NotChecked=0, Total=3540 [2020-11-12 03:35:58,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3794 states. [2020-11-12 03:35:58,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3794 to 2692. [2020-11-12 03:35:58,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2628 states have (on average 1.7922374429223744) internal successors, (4710), 2691 states have internal predecessors, (4710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:58,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 4710 transitions. [2020-11-12 03:35:58,111 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 4710 transitions. Word has length 126 [2020-11-12 03:35:58,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:35:58,111 INFO L481 AbstractCegarLoop]: Abstraction has 2692 states and 4710 transitions. [2020-11-12 03:35:58,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:35:58,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 4710 transitions. [2020-11-12 03:35:58,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:35:58,115 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:35:58,115 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:35:58,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205,201 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:58,316 INFO L429 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:35:58,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:35:58,317 INFO L82 PathProgramCache]: Analyzing trace with hash -56557804, now seen corresponding path program 196 times [2020-11-12 03:35:58,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:35:58,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677911665] [2020-11-12 03:35:58,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:35:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:35:59,062 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:59,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677911665] [2020-11-12 03:35:59,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202246397] [2020-11-12 03:35:59,062 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:35:59,160 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:35:59,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:35:59,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:35:59,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:35:59,198 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:35:59,245 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:35:59,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:35:59,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-11-12 03:35:59,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752645256] [2020-11-12 03:35:59,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:35:59,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:35:59,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:35:59,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:35:59,247 INFO L87 Difference]: Start difference. First operand 2692 states and 4710 transitions. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:01,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:01,347 INFO L93 Difference]: Finished difference Result 4014 states and 7285 transitions. [2020-11-12 03:36:01,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 03:36:01,350 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:36:01,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:01,357 INFO L225 Difference]: With dead ends: 4014 [2020-11-12 03:36:01,357 INFO L226 Difference]: Without dead ends: 3744 [2020-11-12 03:36:01,358 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 763 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=801, Invalid=2505, Unknown=0, NotChecked=0, Total=3306 [2020-11-12 03:36:01,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3744 states. [2020-11-12 03:36:01,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3744 to 2692. [2020-11-12 03:36:01,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2628 states have (on average 1.7922374429223744) internal successors, (4710), 2691 states have internal predecessors, (4710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:01,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 4710 transitions. [2020-11-12 03:36:01,410 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 4710 transitions. Word has length 126 [2020-11-12 03:36:01,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:01,410 INFO L481 AbstractCegarLoop]: Abstraction has 2692 states and 4710 transitions. [2020-11-12 03:36:01,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:01,410 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 4710 transitions. [2020-11-12 03:36:01,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:36:01,413 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:01,413 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:01,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 202 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable206 [2020-11-12 03:36:01,614 INFO L429 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:01,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:01,615 INFO L82 PathProgramCache]: Analyzing trace with hash -534528428, now seen corresponding path program 197 times [2020-11-12 03:36:01,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:01,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896109669] [2020-11-12 03:36:01,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:02,334 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:02,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896109669] [2020-11-12 03:36:02,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225110266] [2020-11-12 03:36:02,334 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:02,436 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-11-12 03:36:02,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:36:02,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:36:02,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:02,490 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:36:02,522 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:02,541 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:02,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:02,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-11-12 03:36:02,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516001044] [2020-11-12 03:36:02,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:36:02,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:02,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:36:02,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:36:02,543 INFO L87 Difference]: Start difference. First operand 2692 states and 4710 transitions. Second operand has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:05,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:05,254 INFO L93 Difference]: Finished difference Result 3964 states and 7185 transitions. [2020-11-12 03:36:05,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-11-12 03:36:05,255 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:36:05,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:05,261 INFO L225 Difference]: With dead ends: 3964 [2020-11-12 03:36:05,262 INFO L226 Difference]: Without dead ends: 3694 [2020-11-12 03:36:05,262 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=908, Invalid=2874, Unknown=0, NotChecked=0, Total=3782 [2020-11-12 03:36:05,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3694 states. [2020-11-12 03:36:05,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3694 to 2692. [2020-11-12 03:36:05,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2628 states have (on average 1.7922374429223744) internal successors, (4710), 2691 states have internal predecessors, (4710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:05,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 4710 transitions. [2020-11-12 03:36:05,306 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 4710 transitions. Word has length 126 [2020-11-12 03:36:05,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:05,306 INFO L481 AbstractCegarLoop]: Abstraction has 2692 states and 4710 transitions. [2020-11-12 03:36:05,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:05,307 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 4710 transitions. [2020-11-12 03:36:05,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:36:05,310 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:05,310 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:05,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207,203 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:05,511 INFO L429 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:05,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:05,512 INFO L82 PathProgramCache]: Analyzing trace with hash 612309106, now seen corresponding path program 198 times [2020-11-12 03:36:05,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:05,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544118682] [2020-11-12 03:36:05,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:05,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:06,155 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:06,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544118682] [2020-11-12 03:36:06,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450505934] [2020-11-12 03:36:06,155 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:06,267 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-11-12 03:36:06,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:36:06,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:36:06,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:06,312 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:06,330 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:06,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:06,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-11-12 03:36:06,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530834255] [2020-11-12 03:36:06,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:36:06,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:06,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:36:06,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:36:06,332 INFO L87 Difference]: Start difference. First operand 2692 states and 4710 transitions. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:08,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:08,608 INFO L93 Difference]: Finished difference Result 3914 states and 7085 transitions. [2020-11-12 03:36:08,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 03:36:08,610 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:36:08,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:08,615 INFO L225 Difference]: With dead ends: 3914 [2020-11-12 03:36:08,615 INFO L226 Difference]: Without dead ends: 3644 [2020-11-12 03:36:08,616 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=886, Invalid=2654, Unknown=0, NotChecked=0, Total=3540 [2020-11-12 03:36:08,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3644 states. [2020-11-12 03:36:08,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3644 to 2692. [2020-11-12 03:36:08,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2628 states have (on average 1.7922374429223744) internal successors, (4710), 2691 states have internal predecessors, (4710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:08,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 4710 transitions. [2020-11-12 03:36:08,662 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 4710 transitions. Word has length 126 [2020-11-12 03:36:08,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:08,662 INFO L481 AbstractCegarLoop]: Abstraction has 2692 states and 4710 transitions. [2020-11-12 03:36:08,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:08,663 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 4710 transitions. [2020-11-12 03:36:08,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:36:08,665 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:08,665 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:08,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,204 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:08,866 INFO L429 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:08,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:08,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1900799922, now seen corresponding path program 199 times [2020-11-12 03:36:08,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:08,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138977736] [2020-11-12 03:36:08,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:09,517 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:09,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138977736] [2020-11-12 03:36:09,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600969007] [2020-11-12 03:36:09,518 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:09,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:36:09,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:09,667 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:36:09,697 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:09,724 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:09,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:09,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-11-12 03:36:09,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366259212] [2020-11-12 03:36:09,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:36:09,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:09,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:36:09,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:36:09,726 INFO L87 Difference]: Start difference. First operand 2692 states and 4710 transitions. Second operand has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:12,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:12,469 INFO L93 Difference]: Finished difference Result 3864 states and 6985 transitions. [2020-11-12 03:36:12,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-11-12 03:36:12,470 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:36:12,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:12,474 INFO L225 Difference]: With dead ends: 3864 [2020-11-12 03:36:12,474 INFO L226 Difference]: Without dead ends: 3594 [2020-11-12 03:36:12,475 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 965 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1001, Invalid=3031, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 03:36:12,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3594 states. [2020-11-12 03:36:12,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3594 to 2692. [2020-11-12 03:36:12,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2628 states have (on average 1.7922374429223744) internal successors, (4710), 2691 states have internal predecessors, (4710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:12,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 4710 transitions. [2020-11-12 03:36:12,504 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 4710 transitions. Word has length 126 [2020-11-12 03:36:12,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:12,504 INFO L481 AbstractCegarLoop]: Abstraction has 2692 states and 4710 transitions. [2020-11-12 03:36:12,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:12,504 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 4710 transitions. [2020-11-12 03:36:12,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:36:12,506 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:12,506 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:12,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209,205 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:12,707 INFO L429 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:12,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:12,707 INFO L82 PathProgramCache]: Analyzing trace with hash 919449424, now seen corresponding path program 200 times [2020-11-12 03:36:12,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:12,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032120023] [2020-11-12 03:36:12,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:13,209 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:13,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032120023] [2020-11-12 03:36:13,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937537170] [2020-11-12 03:36:13,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:13,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:36:13,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:36:13,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:36:13,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:13,339 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:13,355 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:13,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:13,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-11-12 03:36:13,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970685061] [2020-11-12 03:36:13,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:36:13,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:13,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:36:13,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:36:13,357 INFO L87 Difference]: Start difference. First operand 2692 states and 4710 transitions. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:15,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:15,358 INFO L93 Difference]: Finished difference Result 3814 states and 6885 transitions. [2020-11-12 03:36:15,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 03:36:15,360 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:36:15,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:15,364 INFO L225 Difference]: With dead ends: 3814 [2020-11-12 03:36:15,364 INFO L226 Difference]: Without dead ends: 3544 [2020-11-12 03:36:15,364 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 937 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=987, Invalid=2795, Unknown=0, NotChecked=0, Total=3782 [2020-11-12 03:36:15,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3544 states. [2020-11-12 03:36:15,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3544 to 2692. [2020-11-12 03:36:15,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2628 states have (on average 1.7922374429223744) internal successors, (4710), 2691 states have internal predecessors, (4710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:15,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 4710 transitions. [2020-11-12 03:36:15,397 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 4710 transitions. Word has length 126 [2020-11-12 03:36:15,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:15,397 INFO L481 AbstractCegarLoop]: Abstraction has 2692 states and 4710 transitions. [2020-11-12 03:36:15,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:15,397 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 4710 transitions. [2020-11-12 03:36:15,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:36:15,399 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:15,399 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:15,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 206 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable210 [2020-11-12 03:36:15,600 INFO L429 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:15,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:15,601 INFO L82 PathProgramCache]: Analyzing trace with hash 255364752, now seen corresponding path program 201 times [2020-11-12 03:36:15,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:15,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342594973] [2020-11-12 03:36:15,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:16,215 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:16,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342594973] [2020-11-12 03:36:16,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831572497] [2020-11-12 03:36:16,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:16,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-11-12 03:36:16,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:36:16,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:36:16,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:16,373 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:36:16,402 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:16,419 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:16,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:16,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-11-12 03:36:16,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753685935] [2020-11-12 03:36:16,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:36:16,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:16,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:36:16,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:36:16,420 INFO L87 Difference]: Start difference. First operand 2692 states and 4710 transitions. Second operand has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:19,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:19,002 INFO L93 Difference]: Finished difference Result 3764 states and 6785 transitions. [2020-11-12 03:36:19,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-11-12 03:36:19,003 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:36:19,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:19,008 INFO L225 Difference]: With dead ends: 3764 [2020-11-12 03:36:19,008 INFO L226 Difference]: Without dead ends: 3494 [2020-11-12 03:36:19,008 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1061 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1110, Invalid=3180, Unknown=0, NotChecked=0, Total=4290 [2020-11-12 03:36:19,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3494 states. [2020-11-12 03:36:19,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3494 to 2692. [2020-11-12 03:36:19,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2628 states have (on average 1.7922374429223744) internal successors, (4710), 2691 states have internal predecessors, (4710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:19,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 4710 transitions. [2020-11-12 03:36:19,041 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 4710 transitions. Word has length 126 [2020-11-12 03:36:19,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:19,041 INFO L481 AbstractCegarLoop]: Abstraction has 2692 states and 4710 transitions. [2020-11-12 03:36:19,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:19,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 4710 transitions. [2020-11-12 03:36:19,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:36:19,043 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:19,043 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:19,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable211 [2020-11-12 03:36:19,244 INFO L429 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:19,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:19,244 INFO L82 PathProgramCache]: Analyzing trace with hash 553886638, now seen corresponding path program 202 times [2020-11-12 03:36:19,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:19,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265493311] [2020-11-12 03:36:19,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:19,778 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:19,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265493311] [2020-11-12 03:36:19,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649107355] [2020-11-12 03:36:19,778 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:19,863 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:36:19,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:36:19,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:36:19,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:19,902 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:19,918 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:19,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:19,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-11-12 03:36:19,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819259015] [2020-11-12 03:36:19,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:36:19,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:19,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:36:19,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:36:19,919 INFO L87 Difference]: Start difference. First operand 2692 states and 4710 transitions. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:21,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:21,944 INFO L93 Difference]: Finished difference Result 3714 states and 6685 transitions. [2020-11-12 03:36:21,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-12 03:36:21,945 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:36:21,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:21,950 INFO L225 Difference]: With dead ends: 3714 [2020-11-12 03:36:21,950 INFO L226 Difference]: Without dead ends: 3444 [2020-11-12 03:36:21,950 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1030 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1104, Invalid=2928, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 03:36:21,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3444 states. [2020-11-12 03:36:21,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3444 to 2692. [2020-11-12 03:36:21,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2628 states have (on average 1.7922374429223744) internal successors, (4710), 2691 states have internal predecessors, (4710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:21,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 4710 transitions. [2020-11-12 03:36:21,983 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 4710 transitions. Word has length 126 [2020-11-12 03:36:21,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:21,983 INFO L481 AbstractCegarLoop]: Abstraction has 2692 states and 4710 transitions. [2020-11-12 03:36:21,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:21,983 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 4710 transitions. [2020-11-12 03:36:21,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:36:21,985 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:21,986 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:22,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 208 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable212 [2020-11-12 03:36:22,186 INFO L429 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:22,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:22,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1067412754, now seen corresponding path program 203 times [2020-11-12 03:36:22,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:22,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059353386] [2020-11-12 03:36:22,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:22,717 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:22,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059353386] [2020-11-12 03:36:22,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250946950] [2020-11-12 03:36:22,718 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 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:22,811 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-11-12 03:36:22,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:36:22,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:36:22,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:22,858 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:36:22,887 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:22,902 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:22,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:22,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-11-12 03:36:22,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907288048] [2020-11-12 03:36:22,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 03:36:22,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:22,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 03:36:22,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2020-11-12 03:36:22,904 INFO L87 Difference]: Start difference. First operand 2692 states and 4710 transitions. Second operand has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:25,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:25,530 INFO L93 Difference]: Finished difference Result 3729 states and 6702 transitions. [2020-11-12 03:36:25,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-11-12 03:36:25,531 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:36:25,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:25,536 INFO L225 Difference]: With dead ends: 3729 [2020-11-12 03:36:25,536 INFO L226 Difference]: Without dead ends: 3459 [2020-11-12 03:36:25,536 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1161 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1235, Invalid=3321, Unknown=0, NotChecked=0, Total=4556 [2020-11-12 03:36:25,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3459 states. [2020-11-12 03:36:25,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3459 to 2712. [2020-11-12 03:36:25,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2712 states, 2648 states have (on average 1.7956948640483383) internal successors, (4755), 2711 states have internal predecessors, (4755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:25,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2712 states to 2712 states and 4755 transitions. [2020-11-12 03:36:25,568 INFO L78 Accepts]: Start accepts. Automaton has 2712 states and 4755 transitions. Word has length 126 [2020-11-12 03:36:25,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:25,569 INFO L481 AbstractCegarLoop]: Abstraction has 2712 states and 4755 transitions. [2020-11-12 03:36:25,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:25,569 INFO L276 IsEmpty]: Start isEmpty. Operand 2712 states and 4755 transitions. [2020-11-12 03:36:25,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:36:25,571 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:25,571 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:25,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 209 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable213 [2020-11-12 03:36:25,772 INFO L429 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:25,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:25,773 INFO L82 PathProgramCache]: Analyzing trace with hash 66677410, now seen corresponding path program 204 times [2020-11-12 03:36:25,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:25,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792016833] [2020-11-12 03:36:25,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:26,298 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:26,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792016833] [2020-11-12 03:36:26,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829292929] [2020-11-12 03:36:26,299 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:26,393 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-11-12 03:36:26,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:36:26,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:36:26,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:26,436 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:26,451 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:26,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:26,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-11-12 03:36:26,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347698642] [2020-11-12 03:36:26,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 03:36:26,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:26,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 03:36:26,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2020-11-12 03:36:26,452 INFO L87 Difference]: Start difference. First operand 2712 states and 4755 transitions. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:28,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:28,512 INFO L93 Difference]: Finished difference Result 4791 states and 8139 transitions. [2020-11-12 03:36:28,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-12 03:36:28,513 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:36:28,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:28,518 INFO L225 Difference]: With dead ends: 4791 [2020-11-12 03:36:28,518 INFO L226 Difference]: Without dead ends: 4506 [2020-11-12 03:36:28,519 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1238, Invalid=3052, Unknown=0, NotChecked=0, Total=4290 [2020-11-12 03:36:28,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4506 states. [2020-11-12 03:36:28,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4506 to 2797. [2020-11-12 03:36:28,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2797 states, 2733 states have (on average 1.8122941822173435) internal successors, (4953), 2796 states have internal predecessors, (4953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:28,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 4953 transitions. [2020-11-12 03:36:28,555 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 4953 transitions. Word has length 126 [2020-11-12 03:36:28,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:28,555 INFO L481 AbstractCegarLoop]: Abstraction has 2797 states and 4953 transitions. [2020-11-12 03:36:28,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:28,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 4953 transitions. [2020-11-12 03:36:28,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 03:36:28,557 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:28,557 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:28,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 210 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable214 [2020-11-12 03:36:28,758 INFO L429 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:28,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:28,759 INFO L82 PathProgramCache]: Analyzing trace with hash 906654602, now seen corresponding path program 205 times [2020-11-12 03:36:28,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:28,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500313354] [2020-11-12 03:36:28,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:29,297 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:29,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500313354] [2020-11-12 03:36:29,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649432635] [2020-11-12 03:36:29,297 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:29,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 03:36:29,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:29,429 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:36:29,474 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:29,489 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:29,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:29,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2020-11-12 03:36:29,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933246317] [2020-11-12 03:36:29,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:36:29,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:29,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:36:29,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:36:29,490 INFO L87 Difference]: Start difference. First operand 2797 states and 4953 transitions. Second operand has 27 states, 27 states have (on average 4.814814814814815) internal successors, (130), 27 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:32,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:32,309 INFO L93 Difference]: Finished difference Result 4126 states and 7447 transitions. [2020-11-12 03:36:32,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-11-12 03:36:32,310 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.814814814814815) internal successors, (130), 27 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 03:36:32,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:32,314 INFO L225 Difference]: With dead ends: 4126 [2020-11-12 03:36:32,314 INFO L226 Difference]: Without dead ends: 3554 [2020-11-12 03:36:32,315 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1423 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1449, Invalid=3953, Unknown=0, NotChecked=0, Total=5402 [2020-11-12 03:36:32,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3554 states. [2020-11-12 03:36:32,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3554 to 2262. [2020-11-12 03:36:32,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2262 states, 2198 states have (on average 1.7261146496815287) internal successors, (3794), 2261 states have internal predecessors, (3794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:32,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 3794 transitions. [2020-11-12 03:36:32,344 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 3794 transitions. Word has length 126 [2020-11-12 03:36:32,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:32,344 INFO L481 AbstractCegarLoop]: Abstraction has 2262 states and 3794 transitions. [2020-11-12 03:36:32,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.814814814814815) internal successors, (130), 27 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:32,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 3794 transitions. [2020-11-12 03:36:32,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:36:32,346 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:32,346 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:32,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215,211 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:32,547 INFO L429 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:32,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:32,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1515323913, now seen corresponding path program 206 times [2020-11-12 03:36:32,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:32,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130387576] [2020-11-12 03:36:32,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:33,265 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:33,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130387576] [2020-11-12 03:36:33,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963939781] [2020-11-12 03:36:33,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:33,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:36:33,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:36:33,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:36:33,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:33,432 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:33,458 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:33,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:33,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-11-12 03:36:33,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461047157] [2020-11-12 03:36:33,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:36:33,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:33,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:36:33,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:36:33,459 INFO L87 Difference]: Start difference. First operand 2262 states and 3794 transitions. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:34,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:34,688 INFO L93 Difference]: Finished difference Result 3659 states and 6524 transitions. [2020-11-12 03:36:34,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-12 03:36:34,689 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:36:34,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:34,694 INFO L225 Difference]: With dead ends: 3659 [2020-11-12 03:36:34,694 INFO L226 Difference]: Without dead ends: 3389 [2020-11-12 03:36:34,694 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=722, Invalid=2034, Unknown=0, NotChecked=0, Total=2756 [2020-11-12 03:36:34,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3389 states. [2020-11-12 03:36:34,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3389 to 2302. [2020-11-12 03:36:34,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2302 states, 2238 states have (on average 1.7265415549597856) internal successors, (3864), 2301 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:34,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 3864 transitions. [2020-11-12 03:36:34,723 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 3864 transitions. Word has length 131 [2020-11-12 03:36:34,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:34,723 INFO L481 AbstractCegarLoop]: Abstraction has 2302 states and 3864 transitions. [2020-11-12 03:36:34,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:34,723 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 3864 transitions. [2020-11-12 03:36:34,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:36:34,725 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:34,725 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:34,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 212 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable216 [2020-11-12 03:36:34,926 INFO L429 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:34,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:34,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1834324681, now seen corresponding path program 207 times [2020-11-12 03:36:34,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:34,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544305186] [2020-11-12 03:36:34,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:35,664 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:35,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544305186] [2020-11-12 03:36:35,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902388116] [2020-11-12 03:36:35,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:35,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-11-12 03:36:35,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:36:35,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:36:35,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:35,811 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:36:35,878 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:35,920 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:35,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:35,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-11-12 03:36:35,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774558770] [2020-11-12 03:36:35,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:36:35,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:35,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:36:35,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:36:35,922 INFO L87 Difference]: Start difference. First operand 2302 states and 3864 transitions. Second operand has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:37,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:37,298 INFO L93 Difference]: Finished difference Result 4144 states and 7474 transitions. [2020-11-12 03:36:37,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-12 03:36:37,300 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:36:37,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:37,305 INFO L225 Difference]: With dead ends: 4144 [2020-11-12 03:36:37,305 INFO L226 Difference]: Without dead ends: 3874 [2020-11-12 03:36:37,305 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=780, Invalid=2300, Unknown=0, NotChecked=0, Total=3080 [2020-11-12 03:36:37,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3874 states. [2020-11-12 03:36:37,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3874 to 2327. [2020-11-12 03:36:37,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2327 states, 2263 states have (on average 1.7317719840919135) internal successors, (3919), 2326 states have internal predecessors, (3919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:37,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2327 states to 2327 states and 3919 transitions. [2020-11-12 03:36:37,335 INFO L78 Accepts]: Start accepts. Automaton has 2327 states and 3919 transitions. Word has length 131 [2020-11-12 03:36:37,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:37,335 INFO L481 AbstractCegarLoop]: Abstraction has 2327 states and 3919 transitions. [2020-11-12 03:36:37,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:37,336 INFO L276 IsEmpty]: Start isEmpty. Operand 2327 states and 3919 transitions. [2020-11-12 03:36:37,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:36:37,337 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:37,337 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:37,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217,213 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:37,538 INFO L429 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:37,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:37,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1023984597, now seen corresponding path program 208 times [2020-11-12 03:36:37,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:37,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765073785] [2020-11-12 03:36:37,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:38,206 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:38,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765073785] [2020-11-12 03:36:38,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707721646] [2020-11-12 03:36:38,206 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:38,297 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:36:38,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:36:38,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:36:38,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:38,367 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:38,393 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:38,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:38,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-11-12 03:36:38,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345010198] [2020-11-12 03:36:38,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:36:38,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:38,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:36:38,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:36:38,395 INFO L87 Difference]: Start difference. First operand 2327 states and 3919 transitions. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:39,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:39,793 INFO L93 Difference]: Finished difference Result 4159 states and 7484 transitions. [2020-11-12 03:36:39,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 03:36:39,794 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:36:39,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:39,799 INFO L225 Difference]: With dead ends: 4159 [2020-11-12 03:36:39,799 INFO L226 Difference]: Without dead ends: 3889 [2020-11-12 03:36:39,799 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=776, Invalid=2304, Unknown=0, NotChecked=0, Total=3080 [2020-11-12 03:36:39,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-11-12 03:36:39,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2352. [2020-11-12 03:36:39,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2352 states, 2288 states have (on average 1.7368881118881119) internal successors, (3974), 2351 states have internal predecessors, (3974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:39,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 3974 transitions. [2020-11-12 03:36:39,830 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 3974 transitions. Word has length 131 [2020-11-12 03:36:39,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:39,830 INFO L481 AbstractCegarLoop]: Abstraction has 2352 states and 3974 transitions. [2020-11-12 03:36:39,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:39,830 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 3974 transitions. [2020-11-12 03:36:39,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:36:39,832 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:39,832 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:40,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218,214 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:40,033 INFO L429 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:40,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:40,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1632943339, now seen corresponding path program 209 times [2020-11-12 03:36:40,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:40,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796268448] [2020-11-12 03:36:40,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:40,741 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:40,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796268448] [2020-11-12 03:36:40,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357754059] [2020-11-12 03:36:40,741 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:40,839 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-11-12 03:36:40,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:36:40,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:36:40,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:40,883 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:36:40,952 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:40,976 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:40,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:40,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-11-12 03:36:40,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940284777] [2020-11-12 03:36:40,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:36:40,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:40,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:36:40,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:36:40,977 INFO L87 Difference]: Start difference. First operand 2352 states and 3974 transitions. Second operand has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:42,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:42,611 INFO L93 Difference]: Finished difference Result 4159 states and 7464 transitions. [2020-11-12 03:36:42,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-12 03:36:42,612 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:36:42,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:42,617 INFO L225 Difference]: With dead ends: 4159 [2020-11-12 03:36:42,617 INFO L226 Difference]: Without dead ends: 3889 [2020-11-12 03:36:42,618 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=799, Invalid=2507, Unknown=0, NotChecked=0, Total=3306 [2020-11-12 03:36:42,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-11-12 03:36:42,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2377. [2020-11-12 03:36:42,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2377 states, 2313 states have (on average 1.74189364461738) internal successors, (4029), 2376 states have internal predecessors, (4029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:42,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2377 states to 2377 states and 4029 transitions. [2020-11-12 03:36:42,648 INFO L78 Accepts]: Start accepts. Automaton has 2377 states and 4029 transitions. Word has length 131 [2020-11-12 03:36:42,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:42,649 INFO L481 AbstractCegarLoop]: Abstraction has 2377 states and 4029 transitions. [2020-11-12 03:36:42,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:42,649 INFO L276 IsEmpty]: Start isEmpty. Operand 2377 states and 4029 transitions. [2020-11-12 03:36:42,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:36:42,651 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:42,651 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:42,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219,215 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:42,851 INFO L429 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:42,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:42,852 INFO L82 PathProgramCache]: Analyzing trace with hash -169236685, now seen corresponding path program 210 times [2020-11-12 03:36:42,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:42,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579224106] [2020-11-12 03:36:42,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:42,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:43,519 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:43,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579224106] [2020-11-12 03:36:43,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371787748] [2020-11-12 03:36:43,520 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:43,618 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-11-12 03:36:43,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:36:43,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:36:43,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:43,690 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:43,714 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:43,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:43,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-11-12 03:36:43,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003367195] [2020-11-12 03:36:43,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:36:43,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:43,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:36:43,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:36:43,715 INFO L87 Difference]: Start difference. First operand 2377 states and 4029 transitions. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:45,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:45,183 INFO L93 Difference]: Finished difference Result 4159 states and 7444 transitions. [2020-11-12 03:36:45,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 03:36:45,184 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:36:45,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:45,189 INFO L225 Difference]: With dead ends: 4159 [2020-11-12 03:36:45,189 INFO L226 Difference]: Without dead ends: 3889 [2020-11-12 03:36:45,189 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=809, Invalid=2497, Unknown=0, NotChecked=0, Total=3306 [2020-11-12 03:36:45,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-11-12 03:36:45,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2402. [2020-11-12 03:36:45,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2402 states, 2338 states have (on average 1.746792130025663) internal successors, (4084), 2401 states have internal predecessors, (4084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:45,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2402 states to 2402 states and 4084 transitions. [2020-11-12 03:36:45,220 INFO L78 Accepts]: Start accepts. Automaton has 2402 states and 4084 transitions. Word has length 131 [2020-11-12 03:36:45,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:45,220 INFO L481 AbstractCegarLoop]: Abstraction has 2402 states and 4084 transitions. [2020-11-12 03:36:45,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:45,220 INFO L276 IsEmpty]: Start isEmpty. Operand 2402 states and 4084 transitions. [2020-11-12 03:36:45,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:36:45,222 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:45,222 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:45,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220,216 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:45,423 INFO L429 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:45,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:45,424 INFO L82 PathProgramCache]: Analyzing trace with hash 830879347, now seen corresponding path program 211 times [2020-11-12 03:36:45,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:45,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500795081] [2020-11-12 03:36:45,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:46,111 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:46,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500795081] [2020-11-12 03:36:46,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539653980] [2020-11-12 03:36:46,111 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:46,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:36:46,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:46,246 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:36:46,317 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:46,340 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:46,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:46,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-11-12 03:36:46,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996410965] [2020-11-12 03:36:46,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:36:46,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:46,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:36:46,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:36:46,342 INFO L87 Difference]: Start difference. First operand 2402 states and 4084 transitions. Second operand has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:48,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:48,106 INFO L93 Difference]: Finished difference Result 4159 states and 7424 transitions. [2020-11-12 03:36:48,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-12 03:36:48,108 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:36:48,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:48,113 INFO L225 Difference]: With dead ends: 4159 [2020-11-12 03:36:48,113 INFO L226 Difference]: Without dead ends: 3889 [2020-11-12 03:36:48,113 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 754 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=834, Invalid=2706, Unknown=0, NotChecked=0, Total=3540 [2020-11-12 03:36:48,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-11-12 03:36:48,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2427. [2020-11-12 03:36:48,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2427 states, 2363 states have (on average 1.7515869657215404) internal successors, (4139), 2426 states have internal predecessors, (4139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:48,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 4139 transitions. [2020-11-12 03:36:48,143 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 4139 transitions. Word has length 131 [2020-11-12 03:36:48,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:48,144 INFO L481 AbstractCegarLoop]: Abstraction has 2427 states and 4139 transitions. [2020-11-12 03:36:48,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:48,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 4139 transitions. [2020-11-12 03:36:48,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:36:48,146 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:48,146 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:48,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 217 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable221 [2020-11-12 03:36:48,346 INFO L429 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:48,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:48,347 INFO L82 PathProgramCache]: Analyzing trace with hash -296777711, now seen corresponding path program 212 times [2020-11-12 03:36:48,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:48,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890058245] [2020-11-12 03:36:48,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:48,979 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:48,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890058245] [2020-11-12 03:36:48,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457168261] [2020-11-12 03:36:48,979 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 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:49,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:36:49,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:36:49,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:36:49,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:49,143 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:49,167 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:49,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:49,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-11-12 03:36:49,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801341526] [2020-11-12 03:36:49,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:36:49,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:49,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:36:49,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:36:49,168 INFO L87 Difference]: Start difference. First operand 2427 states and 4139 transitions. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:50,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:50,773 INFO L93 Difference]: Finished difference Result 4159 states and 7404 transitions. [2020-11-12 03:36:50,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 03:36:50,774 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:36:50,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:50,778 INFO L225 Difference]: With dead ends: 4159 [2020-11-12 03:36:50,778 INFO L226 Difference]: Without dead ends: 3889 [2020-11-12 03:36:50,779 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=858, Invalid=2682, Unknown=0, NotChecked=0, Total=3540 [2020-11-12 03:36:50,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-11-12 03:36:50,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2452. [2020-11-12 03:36:50,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 2388 states have (on average 1.756281407035176) internal successors, (4194), 2451 states have internal predecessors, (4194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:50,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 4194 transitions. [2020-11-12 03:36:50,809 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 4194 transitions. Word has length 131 [2020-11-12 03:36:50,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:50,810 INFO L481 AbstractCegarLoop]: Abstraction has 2452 states and 4194 transitions. [2020-11-12 03:36:50,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:50,810 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 4194 transitions. [2020-11-12 03:36:50,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:36:50,812 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:50,812 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:51,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 218 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable222 [2020-11-12 03:36:51,012 INFO L429 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:51,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:51,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1111107409, now seen corresponding path program 213 times [2020-11-12 03:36:51,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:51,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482094787] [2020-11-12 03:36:51,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:51,681 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:51,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482094787] [2020-11-12 03:36:51,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310102735] [2020-11-12 03:36:51,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:51,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-11-12 03:36:51,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:36:51,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:36:51,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:51,828 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:36:51,896 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:51,919 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:51,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:51,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-11-12 03:36:51,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403254167] [2020-11-12 03:36:51,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:36:51,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:51,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:36:51,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:36:51,921 INFO L87 Difference]: Start difference. First operand 2452 states and 4194 transitions. Second operand has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:53,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:53,871 INFO L93 Difference]: Finished difference Result 4159 states and 7384 transitions. [2020-11-12 03:36:53,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-11-12 03:36:53,872 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:36:53,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:53,876 INFO L225 Difference]: With dead ends: 4159 [2020-11-12 03:36:53,876 INFO L226 Difference]: Without dead ends: 3889 [2020-11-12 03:36:53,877 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=885, Invalid=2897, Unknown=0, NotChecked=0, Total=3782 [2020-11-12 03:36:53,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-11-12 03:36:53,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2477. [2020-11-12 03:36:53,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2413 states have (on average 1.7608785743887276) internal successors, (4249), 2476 states have internal predecessors, (4249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:53,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 4249 transitions. [2020-11-12 03:36:53,907 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 4249 transitions. Word has length 131 [2020-11-12 03:36:53,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:53,908 INFO L481 AbstractCegarLoop]: Abstraction has 2477 states and 4249 transitions. [2020-11-12 03:36:53,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:53,908 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 4249 transitions. [2020-11-12 03:36:53,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:36:53,910 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:53,910 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:54,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 219 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable223 [2020-11-12 03:36:54,111 INFO L429 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:54,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:54,111 INFO L82 PathProgramCache]: Analyzing trace with hash 189875823, now seen corresponding path program 214 times [2020-11-12 03:36:54,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:54,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102592459] [2020-11-12 03:36:54,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:54,718 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:54,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102592459] [2020-11-12 03:36:54,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831438315] [2020-11-12 03:36:54,718 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:54,810 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:36:54,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:36:54,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:36:54,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:54,887 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:54,908 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:54,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:54,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-11-12 03:36:54,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531529368] [2020-11-12 03:36:54,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:36:54,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:54,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:36:54,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:36:54,909 INFO L87 Difference]: Start difference. First operand 2477 states and 4249 transitions. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:56,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:56,640 INFO L93 Difference]: Finished difference Result 4159 states and 7364 transitions. [2020-11-12 03:36:56,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 03:36:56,641 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:36:56,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:56,645 INFO L225 Difference]: With dead ends: 4159 [2020-11-12 03:36:56,645 INFO L226 Difference]: Without dead ends: 3889 [2020-11-12 03:36:56,646 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 923 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=923, Invalid=2859, Unknown=0, NotChecked=0, Total=3782 [2020-11-12 03:36:56,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-11-12 03:36:56,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2502. [2020-11-12 03:36:56,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 2438 states have (on average 1.7653814602132896) internal successors, (4304), 2501 states have internal predecessors, (4304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:56,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 4304 transitions. [2020-11-12 03:36:56,676 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 4304 transitions. Word has length 131 [2020-11-12 03:36:56,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:56,676 INFO L481 AbstractCegarLoop]: Abstraction has 2502 states and 4304 transitions. [2020-11-12 03:36:56,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:56,676 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 4304 transitions. [2020-11-12 03:36:56,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:36:56,678 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:56,678 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:36:56,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 220 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable224 [2020-11-12 03:36:56,879 INFO L429 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:36:56,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:36:56,880 INFO L82 PathProgramCache]: Analyzing trace with hash -824314449, now seen corresponding path program 215 times [2020-11-12 03:36:56,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:36:56,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78405339] [2020-11-12 03:36:56,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:36:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:36:57,514 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:57,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78405339] [2020-11-12 03:36:57,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691694360] [2020-11-12 03:36:57,514 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:36:57,610 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-11-12 03:36:57,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:36:57,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:36:57,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:36:57,655 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:36:57,724 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:36:57,745 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:36:57,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:36:57,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-11-12 03:36:57,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129755919] [2020-11-12 03:36:57,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:36:57,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:36:57,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:36:57,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:36:57,746 INFO L87 Difference]: Start difference. First operand 2502 states and 4304 transitions. Second operand has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:59,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:36:59,854 INFO L93 Difference]: Finished difference Result 4159 states and 7344 transitions. [2020-11-12 03:36:59,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-11-12 03:36:59,856 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:36:59,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:36:59,860 INFO L225 Difference]: With dead ends: 4159 [2020-11-12 03:36:59,860 INFO L226 Difference]: Without dead ends: 3889 [2020-11-12 03:36:59,860 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=952, Invalid=3080, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 03:36:59,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-11-12 03:36:59,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2527. [2020-11-12 03:36:59,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2527 states, 2463 states have (on average 1.7697929354445798) internal successors, (4359), 2526 states have internal predecessors, (4359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:59,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2527 states to 2527 states and 4359 transitions. [2020-11-12 03:36:59,891 INFO L78 Accepts]: Start accepts. Automaton has 2527 states and 4359 transitions. Word has length 131 [2020-11-12 03:36:59,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:36:59,891 INFO L481 AbstractCegarLoop]: Abstraction has 2527 states and 4359 transitions. [2020-11-12 03:36:59,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:36:59,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2527 states and 4359 transitions. [2020-11-12 03:36:59,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:36:59,893 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:36:59,894 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:00,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225,221 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:00,095 INFO L429 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:00,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:00,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1998438989, now seen corresponding path program 216 times [2020-11-12 03:37:00,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:00,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239614471] [2020-11-12 03:37:00,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:00,739 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:00,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239614471] [2020-11-12 03:37:00,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860825608] [2020-11-12 03:37:00,740 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:00,840 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-11-12 03:37:00,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:37:00,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:37:00,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:00,915 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:00,935 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:00,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:00,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-11-12 03:37:00,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20567803] [2020-11-12 03:37:00,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:37:00,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:00,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:37:00,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:37:00,938 INFO L87 Difference]: Start difference. First operand 2527 states and 4359 transitions. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:02,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:02,848 INFO L93 Difference]: Finished difference Result 4159 states and 7324 transitions. [2020-11-12 03:37:02,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 03:37:02,849 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:37:02,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:02,853 INFO L225 Difference]: With dead ends: 4159 [2020-11-12 03:37:02,853 INFO L226 Difference]: Without dead ends: 3889 [2020-11-12 03:37:02,853 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1004, Invalid=3028, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 03:37:02,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-11-12 03:37:02,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2552. [2020-11-12 03:37:02,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2552 states, 2488 states have (on average 1.7741157556270097) internal successors, (4414), 2551 states have internal predecessors, (4414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:02,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2552 states to 2552 states and 4414 transitions. [2020-11-12 03:37:02,884 INFO L78 Accepts]: Start accepts. Automaton has 2552 states and 4414 transitions. Word has length 131 [2020-11-12 03:37:02,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:02,884 INFO L481 AbstractCegarLoop]: Abstraction has 2552 states and 4414 transitions. [2020-11-12 03:37:02,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:02,884 INFO L276 IsEmpty]: Start isEmpty. Operand 2552 states and 4414 transitions. [2020-11-12 03:37:02,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:37:02,887 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:02,887 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:03,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 222 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable226 [2020-11-12 03:37:03,087 INFO L429 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:03,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:03,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1520468365, now seen corresponding path program 217 times [2020-11-12 03:37:03,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:03,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616307327] [2020-11-12 03:37:03,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:03,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:03,728 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:03,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616307327] [2020-11-12 03:37:03,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709899680] [2020-11-12 03:37:03,729 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:03,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:37:03,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:03,865 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:37:03,936 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:03,956 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:03,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:03,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-11-12 03:37:03,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300589431] [2020-11-12 03:37:03,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:37:03,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:03,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:37:03,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:37:03,957 INFO L87 Difference]: Start difference. First operand 2552 states and 4414 transitions. Second operand has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:06,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:06,256 INFO L93 Difference]: Finished difference Result 4159 states and 7304 transitions. [2020-11-12 03:37:06,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-11-12 03:37:06,257 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:37:06,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:06,261 INFO L225 Difference]: With dead ends: 4159 [2020-11-12 03:37:06,262 INFO L226 Difference]: Without dead ends: 3889 [2020-11-12 03:37:06,262 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1054 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1035, Invalid=3255, Unknown=0, NotChecked=0, Total=4290 [2020-11-12 03:37:06,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-11-12 03:37:06,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2577. [2020-11-12 03:37:06,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2577 states, 2513 states have (on average 1.7783525666534024) internal successors, (4469), 2576 states have internal predecessors, (4469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:06,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2577 states to 2577 states and 4469 transitions. [2020-11-12 03:37:06,297 INFO L78 Accepts]: Start accepts. Automaton has 2577 states and 4469 transitions. Word has length 131 [2020-11-12 03:37:06,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:06,298 INFO L481 AbstractCegarLoop]: Abstraction has 2577 states and 4469 transitions. [2020-11-12 03:37:06,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:06,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2577 states and 4469 transitions. [2020-11-12 03:37:06,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:37:06,300 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:06,300 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:06,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227,223 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:06,501 INFO L429 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:06,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:06,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1627661397, now seen corresponding path program 218 times [2020-11-12 03:37:06,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:06,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363748571] [2020-11-12 03:37:06,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:06,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:07,103 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:07,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363748571] [2020-11-12 03:37:07,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977144503] [2020-11-12 03:37:07,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:07,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:37:07,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:37:07,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:37:07,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:07,271 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:07,291 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:07,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:07,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-11-12 03:37:07,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102864145] [2020-11-12 03:37:07,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:37:07,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:07,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:37:07,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:37:07,292 INFO L87 Difference]: Start difference. First operand 2577 states and 4469 transitions. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:09,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:09,280 INFO L93 Difference]: Finished difference Result 4159 states and 7284 transitions. [2020-11-12 03:37:09,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-12 03:37:09,281 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:37:09,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:09,286 INFO L225 Difference]: With dead ends: 4159 [2020-11-12 03:37:09,286 INFO L226 Difference]: Without dead ends: 3889 [2020-11-12 03:37:09,287 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1129 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1101, Invalid=3189, Unknown=0, NotChecked=0, Total=4290 [2020-11-12 03:37:09,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-11-12 03:37:09,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2602. [2020-11-12 03:37:09,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2602 states, 2538 states have (on average 1.7825059101654845) internal successors, (4524), 2601 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:09,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 4524 transitions. [2020-11-12 03:37:09,320 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 4524 transitions. Word has length 131 [2020-11-12 03:37:09,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:09,320 INFO L481 AbstractCegarLoop]: Abstraction has 2602 states and 4524 transitions. [2020-11-12 03:37:09,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:09,320 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 4524 transitions. [2020-11-12 03:37:09,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:37:09,322 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:09,322 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:09,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 224 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable228 [2020-11-12 03:37:09,523 INFO L429 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:09,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:09,523 INFO L82 PathProgramCache]: Analyzing trace with hash -339170581, now seen corresponding path program 219 times [2020-11-12 03:37:09,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:09,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038059135] [2020-11-12 03:37:09,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:10,165 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:10,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038059135] [2020-11-12 03:37:10,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592833560] [2020-11-12 03:37:10,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:10,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-11-12 03:37:10,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:37:10,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:37:10,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:10,312 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:37:10,380 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:10,399 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:10,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:10,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-11-12 03:37:10,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727263990] [2020-11-12 03:37:10,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:37:10,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:10,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:37:10,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=639, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:37:10,401 INFO L87 Difference]: Start difference. First operand 2602 states and 4524 transitions. Second operand has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:12,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:12,865 INFO L93 Difference]: Finished difference Result 4159 states and 7264 transitions. [2020-11-12 03:37:12,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-11-12 03:37:12,866 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:37:12,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:12,871 INFO L225 Difference]: With dead ends: 4159 [2020-11-12 03:37:12,871 INFO L226 Difference]: Without dead ends: 3889 [2020-11-12 03:37:12,871 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1162 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1134, Invalid=3422, Unknown=0, NotChecked=0, Total=4556 [2020-11-12 03:37:12,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-11-12 03:37:12,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2627. [2020-11-12 03:37:12,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2627 states, 2563 states have (on average 1.7865782286383145) internal successors, (4579), 2626 states have internal predecessors, (4579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:12,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 4579 transitions. [2020-11-12 03:37:12,907 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 4579 transitions. Word has length 131 [2020-11-12 03:37:12,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:12,907 INFO L481 AbstractCegarLoop]: Abstraction has 2627 states and 4579 transitions. [2020-11-12 03:37:12,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:12,907 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 4579 transitions. [2020-11-12 03:37:12,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:37:12,911 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:12,911 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:13,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229,225 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:13,112 INFO L429 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:13,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:13,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1320521079, now seen corresponding path program 220 times [2020-11-12 03:37:13,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:13,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272227143] [2020-11-12 03:37:13,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:13,694 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:13,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272227143] [2020-11-12 03:37:13,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379389409] [2020-11-12 03:37:13,695 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:13,787 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:37:13,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:37:13,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:37:13,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:13,869 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:13,888 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:13,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:13,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-11-12 03:37:13,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384262835] [2020-11-12 03:37:13,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:37:13,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:13,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:37:13,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:37:13,889 INFO L87 Difference]: Start difference. First operand 2627 states and 4579 transitions. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:15,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:15,990 INFO L93 Difference]: Finished difference Result 4159 states and 7244 transitions. [2020-11-12 03:37:15,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-12 03:37:15,991 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:37:15,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:15,994 INFO L225 Difference]: With dead ends: 4159 [2020-11-12 03:37:15,994 INFO L226 Difference]: Without dead ends: 3889 [2020-11-12 03:37:15,995 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1238 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1214, Invalid=3342, Unknown=0, NotChecked=0, Total=4556 [2020-11-12 03:37:16,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-11-12 03:37:16,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2652. [2020-11-12 03:37:16,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2652 states, 2588 states have (on average 1.7905718701700155) internal successors, (4634), 2651 states have internal predecessors, (4634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:16,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 4634 transitions. [2020-11-12 03:37:16,028 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 4634 transitions. Word has length 131 [2020-11-12 03:37:16,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:16,029 INFO L481 AbstractCegarLoop]: Abstraction has 2652 states and 4634 transitions. [2020-11-12 03:37:16,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:16,029 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 4634 transitions. [2020-11-12 03:37:16,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:37:16,031 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:16,031 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:16,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230,226 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:16,232 INFO L429 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:16,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:16,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1984605751, now seen corresponding path program 221 times [2020-11-12 03:37:16,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:16,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352910048] [2020-11-12 03:37:16,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:16,827 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:16,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352910048] [2020-11-12 03:37:16,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354964773] [2020-11-12 03:37:16,828 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:16,923 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-11-12 03:37:16,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:37:16,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:37:16,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:16,970 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:37:17,049 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:17,067 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:17,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:17,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-11-12 03:37:17,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121639076] [2020-11-12 03:37:17,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:37:17,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:17,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:37:17,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:37:17,068 INFO L87 Difference]: Start difference. First operand 2652 states and 4634 transitions. Second operand has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:19,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:19,784 INFO L93 Difference]: Finished difference Result 4159 states and 7224 transitions. [2020-11-12 03:37:19,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-11-12 03:37:19,786 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:37:19,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:19,790 INFO L225 Difference]: With dead ends: 4159 [2020-11-12 03:37:19,790 INFO L226 Difference]: Without dead ends: 3889 [2020-11-12 03:37:19,791 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1274 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1249, Invalid=3581, Unknown=0, NotChecked=0, Total=4830 [2020-11-12 03:37:19,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-11-12 03:37:19,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2677. [2020-11-12 03:37:19,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2677 states, 2613 states have (on average 1.7944890929965558) internal successors, (4689), 2676 states have internal predecessors, (4689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:19,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2677 states to 2677 states and 4689 transitions. [2020-11-12 03:37:19,825 INFO L78 Accepts]: Start accepts. Automaton has 2677 states and 4689 transitions. Word has length 131 [2020-11-12 03:37:19,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:19,825 INFO L481 AbstractCegarLoop]: Abstraction has 2677 states and 4689 transitions. [2020-11-12 03:37:19,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:19,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2677 states and 4689 transitions. [2020-11-12 03:37:19,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:37:19,828 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:19,828 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:20,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231,227 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:20,028 INFO L429 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:20,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:20,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1686083865, now seen corresponding path program 222 times [2020-11-12 03:37:20,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:20,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118537065] [2020-11-12 03:37:20,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:20,604 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:20,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118537065] [2020-11-12 03:37:20,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457609175] [2020-11-12 03:37:20,605 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:20,708 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-11-12 03:37:20,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:37:20,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:37:20,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:20,806 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:20,833 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:20,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:20,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-11-12 03:37:20,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521681796] [2020-11-12 03:37:20,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:37:20,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:20,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:37:20,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:37:20,835 INFO L87 Difference]: Start difference. First operand 2677 states and 4689 transitions. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:23,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:23,114 INFO L93 Difference]: Finished difference Result 4159 states and 7204 transitions. [2020-11-12 03:37:23,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-11-12 03:37:23,115 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:37:23,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:23,119 INFO L225 Difference]: With dead ends: 4159 [2020-11-12 03:37:23,120 INFO L226 Difference]: Without dead ends: 3889 [2020-11-12 03:37:23,120 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1351 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1343, Invalid=3487, Unknown=0, NotChecked=0, Total=4830 [2020-11-12 03:37:23,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-11-12 03:37:23,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2702. [2020-11-12 03:37:23,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2702 states, 2638 states have (on average 1.7983320697498104) internal successors, (4744), 2701 states have internal predecessors, (4744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:23,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2702 states to 2702 states and 4744 transitions. [2020-11-12 03:37:23,155 INFO L78 Accepts]: Start accepts. Automaton has 2702 states and 4744 transitions. Word has length 131 [2020-11-12 03:37:23,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:23,155 INFO L481 AbstractCegarLoop]: Abstraction has 2702 states and 4744 transitions. [2020-11-12 03:37:23,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:23,155 INFO L276 IsEmpty]: Start isEmpty. Operand 2702 states and 4744 transitions. [2020-11-12 03:37:23,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:37:23,158 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:23,158 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:23,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232,228 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:23,359 INFO L429 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:23,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:23,359 INFO L82 PathProgramCache]: Analyzing trace with hash 987584039, now seen corresponding path program 223 times [2020-11-12 03:37:23,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:23,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115949045] [2020-11-12 03:37:23,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:23,958 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:23,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115949045] [2020-11-12 03:37:23,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379802796] [2020-11-12 03:37:23,958 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:24,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:37:24,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:24,097 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:37:24,184 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:24,201 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:24,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:24,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-11-12 03:37:24,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299299902] [2020-11-12 03:37:24,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:37:24,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:24,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:37:24,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:37:24,203 INFO L87 Difference]: Start difference. First operand 2702 states and 4744 transitions. Second operand has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:27,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:27,143 INFO L93 Difference]: Finished difference Result 4588 states and 7990 transitions. [2020-11-12 03:37:27,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-11-12 03:37:27,144 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:37:27,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:27,148 INFO L225 Difference]: With dead ends: 4588 [2020-11-12 03:37:27,148 INFO L226 Difference]: Without dead ends: 4079 [2020-11-12 03:37:27,149 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1477 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1403, Invalid=3999, Unknown=0, NotChecked=0, Total=5402 [2020-11-12 03:37:27,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4079 states. [2020-11-12 03:37:27,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4079 to 2727. [2020-11-12 03:37:27,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2727 states, 2663 states have (on average 1.8043559894855425) internal successors, (4805), 2726 states have internal predecessors, (4805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:27,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 4805 transitions. [2020-11-12 03:37:27,183 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 4805 transitions. Word has length 131 [2020-11-12 03:37:27,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:27,183 INFO L481 AbstractCegarLoop]: Abstraction has 2727 states and 4805 transitions. [2020-11-12 03:37:27,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:27,183 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 4805 transitions. [2020-11-12 03:37:27,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:37:27,185 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:27,186 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:27,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 229 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable233 [2020-11-12 03:37:27,386 INFO L429 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:27,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:27,387 INFO L82 PathProgramCache]: Analyzing trace with hash 2121674203, now seen corresponding path program 224 times [2020-11-12 03:37:27,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:27,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277298235] [2020-11-12 03:37:27,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:27,979 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:27,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277298235] [2020-11-12 03:37:27,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384160060] [2020-11-12 03:37:27,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:28,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:37:28,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:37:28,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:37:28,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:28,153 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:28,190 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:28,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:28,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-11-12 03:37:28,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936797187] [2020-11-12 03:37:28,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:37:28,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:28,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:37:28,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:37:28,192 INFO L87 Difference]: Start difference. First operand 2727 states and 4805 transitions. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:30,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:30,531 INFO L93 Difference]: Finished difference Result 5266 states and 8674 transitions. [2020-11-12 03:37:30,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-11-12 03:37:30,533 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:37:30,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:30,538 INFO L225 Difference]: With dead ends: 5266 [2020-11-12 03:37:30,538 INFO L226 Difference]: Without dead ends: 4981 [2020-11-12 03:37:30,539 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1467 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1489, Invalid=3623, Unknown=0, NotChecked=0, Total=5112 [2020-11-12 03:37:30,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4981 states. [2020-11-12 03:37:30,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4981 to 2812. [2020-11-12 03:37:30,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2812 states, 2748 states have (on average 1.8205967976710336) internal successors, (5003), 2811 states have internal predecessors, (5003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:30,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 5003 transitions. [2020-11-12 03:37:30,578 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 5003 transitions. Word has length 131 [2020-11-12 03:37:30,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:30,578 INFO L481 AbstractCegarLoop]: Abstraction has 2812 states and 5003 transitions. [2020-11-12 03:37:30,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:30,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 5003 transitions. [2020-11-12 03:37:30,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 03:37:30,581 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:30,581 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:30,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 230 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable234 [2020-11-12 03:37:30,782 INFO L429 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:30,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:30,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1333315901, now seen corresponding path program 225 times [2020-11-12 03:37:30,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:30,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86442638] [2020-11-12 03:37:30,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:31,379 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:31,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86442638] [2020-11-12 03:37:31,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724955755] [2020-11-12 03:37:31,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:31,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-11-12 03:37:31,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:37:31,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 03:37:31,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:31,529 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:37:31,582 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:31,598 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:31,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:31,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-11-12 03:37:31,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330127256] [2020-11-12 03:37:31,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:37:31,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:31,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:37:31,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:37:31,599 INFO L87 Difference]: Start difference. First operand 2812 states and 5003 transitions. Second operand has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:34,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:34,420 INFO L93 Difference]: Finished difference Result 4265 states and 7269 transitions. [2020-11-12 03:37:34,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-11-12 03:37:34,422 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 03:37:34,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:34,427 INFO L225 Difference]: With dead ends: 4265 [2020-11-12 03:37:34,427 INFO L226 Difference]: Without dead ends: 3869 [2020-11-12 03:37:34,428 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1470 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1502, Invalid=3754, Unknown=0, NotChecked=0, Total=5256 [2020-11-12 03:37:34,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3869 states. [2020-11-12 03:37:34,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3869 to 2707. [2020-11-12 03:37:34,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2707 states, 2643 states have (on average 1.8142262580401058) internal successors, (4795), 2706 states have internal predecessors, (4795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:34,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2707 states to 2707 states and 4795 transitions. [2020-11-12 03:37:34,462 INFO L78 Accepts]: Start accepts. Automaton has 2707 states and 4795 transitions. Word has length 131 [2020-11-12 03:37:34,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:34,462 INFO L481 AbstractCegarLoop]: Abstraction has 2707 states and 4795 transitions. [2020-11-12 03:37:34,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:34,462 INFO L276 IsEmpty]: Start isEmpty. Operand 2707 states and 4795 transitions. [2020-11-12 03:37:34,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:37:34,464 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:34,465 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:34,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 231 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable235 [2020-11-12 03:37:34,665 INFO L429 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:34,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:34,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1067809773, now seen corresponding path program 226 times [2020-11-12 03:37:34,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:34,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626541338] [2020-11-12 03:37:34,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:35,475 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:35,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626541338] [2020-11-12 03:37:35,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193658464] [2020-11-12 03:37:35,476 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:35,568 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:37:35,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:37:35,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:37:35,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:35,660 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:35,671 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:35,701 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:35,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:35,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-11-12 03:37:35,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502589949] [2020-11-12 03:37:35,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:37:35,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:35,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:37:35,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=676, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:37:35,702 INFO L87 Difference]: Start difference. First operand 2707 states and 4795 transitions. Second operand has 30 states, 30 states have (on average 5.233333333333333) internal successors, (157), 30 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:37,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:37,322 INFO L93 Difference]: Finished difference Result 4015 states and 7139 transitions. [2020-11-12 03:37:37,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-12 03:37:37,323 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.233333333333333) internal successors, (157), 30 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:37:37,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:37,327 INFO L225 Difference]: With dead ends: 4015 [2020-11-12 03:37:37,327 INFO L226 Difference]: Without dead ends: 3681 [2020-11-12 03:37:37,327 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=885, Invalid=2421, Unknown=0, NotChecked=0, Total=3306 [2020-11-12 03:37:37,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2020-11-12 03:37:37,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 2782. [2020-11-12 03:37:37,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2782 states, 2718 states have (on average 1.8193524650478292) internal successors, (4945), 2781 states have internal predecessors, (4945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:37,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2782 states to 2782 states and 4945 transitions. [2020-11-12 03:37:37,361 INFO L78 Accepts]: Start accepts. Automaton has 2782 states and 4945 transitions. Word has length 136 [2020-11-12 03:37:37,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:37,361 INFO L481 AbstractCegarLoop]: Abstraction has 2782 states and 4945 transitions. [2020-11-12 03:37:37,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.233333333333333) internal successors, (157), 30 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:37,361 INFO L276 IsEmpty]: Start isEmpty. Operand 2782 states and 4945 transitions. [2020-11-12 03:37:37,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:37:37,364 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:37,364 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:37,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236,232 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:37,564 INFO L429 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:37,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:37,565 INFO L82 PathProgramCache]: Analyzing trace with hash -884919499, now seen corresponding path program 227 times [2020-11-12 03:37:37,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:37,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043914564] [2020-11-12 03:37:37,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:38,389 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:38,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043914564] [2020-11-12 03:37:38,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019284596] [2020-11-12 03:37:38,390 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:38,490 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-11-12 03:37:38,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:37:38,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:37:38,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:38,512 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:38,540 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:38,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:38,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-11-12 03:37:38,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057562996] [2020-11-12 03:37:38,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:37:38,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:38,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:37:38,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:37:38,542 INFO L87 Difference]: Start difference. First operand 2782 states and 4945 transitions. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:39,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:39,887 INFO L93 Difference]: Finished difference Result 4809 states and 8920 transitions. [2020-11-12 03:37:39,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-12 03:37:39,888 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:37:39,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:39,893 INFO L225 Difference]: With dead ends: 4809 [2020-11-12 03:37:39,894 INFO L226 Difference]: Without dead ends: 4539 [2020-11-12 03:37:39,894 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=730, Invalid=1922, Unknown=0, NotChecked=0, Total=2652 [2020-11-12 03:37:39,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4539 states. [2020-11-12 03:37:39,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4539 to 2842. [2020-11-12 03:37:39,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2842 states, 2778 states have (on average 1.810655147588193) internal successors, (5030), 2841 states have internal predecessors, (5030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:39,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2842 states to 2842 states and 5030 transitions. [2020-11-12 03:37:39,932 INFO L78 Accepts]: Start accepts. Automaton has 2842 states and 5030 transitions. Word has length 136 [2020-11-12 03:37:39,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:39,932 INFO L481 AbstractCegarLoop]: Abstraction has 2842 states and 5030 transitions. [2020-11-12 03:37:39,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:39,932 INFO L276 IsEmpty]: Start isEmpty. Operand 2842 states and 5030 transitions. [2020-11-12 03:37:39,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:37:39,935 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:39,935 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:40,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 233 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable237 [2020-11-12 03:37:40,136 INFO L429 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:40,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:40,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1358593867, now seen corresponding path program 228 times [2020-11-12 03:37:40,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:40,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806442357] [2020-11-12 03:37:40,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:41,002 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:41,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806442357] [2020-11-12 03:37:41,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436547586] [2020-11-12 03:37:41,002 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:41,106 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-11-12 03:37:41,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:37:41,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:37:41,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:41,154 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:37:41,176 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:41,204 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:41,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:41,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-12 03:37:41,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586962113] [2020-11-12 03:37:41,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:37:41,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:41,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:37:41,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:37:41,205 INFO L87 Difference]: Start difference. First operand 2842 states and 5030 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:42,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:42,746 INFO L93 Difference]: Finished difference Result 4739 states and 8755 transitions. [2020-11-12 03:37:42,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-12 03:37:42,748 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:37:42,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:42,754 INFO L225 Difference]: With dead ends: 4739 [2020-11-12 03:37:42,754 INFO L226 Difference]: Without dead ends: 4469 [2020-11-12 03:37:42,754 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=801, Invalid=2279, Unknown=0, NotChecked=0, Total=3080 [2020-11-12 03:37:42,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4469 states. [2020-11-12 03:37:42,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4469 to 2867. [2020-11-12 03:37:42,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2867 states, 2803 states have (on average 1.8034249018908313) internal successors, (5055), 2866 states have internal predecessors, (5055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:42,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2867 states to 2867 states and 5055 transitions. [2020-11-12 03:37:42,792 INFO L78 Accepts]: Start accepts. Automaton has 2867 states and 5055 transitions. Word has length 136 [2020-11-12 03:37:42,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:42,792 INFO L481 AbstractCegarLoop]: Abstraction has 2867 states and 5055 transitions. [2020-11-12 03:37:42,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:42,792 INFO L276 IsEmpty]: Start isEmpty. Operand 2867 states and 5055 transitions. [2020-11-12 03:37:42,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:37:42,794 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:42,794 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:42,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238,234 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:42,995 INFO L429 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:42,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:42,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1295197773, now seen corresponding path program 229 times [2020-11-12 03:37:42,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:42,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334565954] [2020-11-12 03:37:42,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:43,776 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:43,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334565954] [2020-11-12 03:37:43,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245064349] [2020-11-12 03:37:43,776 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:43,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:37:43,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:43,892 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:43,918 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:43,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:43,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-11-12 03:37:43,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570470023] [2020-11-12 03:37:43,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:37:43,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:43,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:37:43,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:37:43,920 INFO L87 Difference]: Start difference. First operand 2867 states and 5055 transitions. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:45,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:45,414 INFO L93 Difference]: Finished difference Result 4739 states and 8730 transitions. [2020-11-12 03:37:45,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-12 03:37:45,415 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:37:45,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:45,420 INFO L225 Difference]: With dead ends: 4739 [2020-11-12 03:37:45,420 INFO L226 Difference]: Without dead ends: 4469 [2020-11-12 03:37:45,421 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=733, Invalid=2129, Unknown=0, NotChecked=0, Total=2862 [2020-11-12 03:37:45,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4469 states. [2020-11-12 03:37:45,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4469 to 2892. [2020-11-12 03:37:45,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:45,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:37:45,458 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:37:45,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:45,458 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:37:45,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:45,459 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:37:45,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:37:45,461 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:45,461 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:45,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 235 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable239 [2020-11-12 03:37:45,662 INFO L429 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:45,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:45,662 INFO L82 PathProgramCache]: Analyzing trace with hash 976197005, now seen corresponding path program 230 times [2020-11-12 03:37:45,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:45,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553412188] [2020-11-12 03:37:45,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:46,494 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:46,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553412188] [2020-11-12 03:37:46,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956438221] [2020-11-12 03:37:46,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:46,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:37:46,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:37:46,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:37:46,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:46,657 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:37:46,680 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:46,706 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:46,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:46,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-12 03:37:46,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586923337] [2020-11-12 03:37:46,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:37:46,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:46,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:37:46,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:37:46,708 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:48,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:48,505 INFO L93 Difference]: Finished difference Result 4714 states and 8655 transitions. [2020-11-12 03:37:48,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-12 03:37:48,507 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:37:48,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:48,512 INFO L225 Difference]: With dead ends: 4714 [2020-11-12 03:37:48,512 INFO L226 Difference]: Without dead ends: 4444 [2020-11-12 03:37:48,512 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=812, Invalid=2494, Unknown=0, NotChecked=0, Total=3306 [2020-11-12 03:37:48,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4444 states. [2020-11-12 03:37:48,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4444 to 2892. [2020-11-12 03:37:48,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:48,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:37:48,550 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:37:48,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:48,550 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:37:48,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:48,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:37:48,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:37:48,553 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:48,553 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:48,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240,236 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:48,753 INFO L429 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:48,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:48,754 INFO L82 PathProgramCache]: Analyzing trace with hash -460461013, now seen corresponding path program 231 times [2020-11-12 03:37:48,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:48,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842505522] [2020-11-12 03:37:48,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:49,520 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:49,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842505522] [2020-11-12 03:37:49,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719338023] [2020-11-12 03:37:49,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:49,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-11-12 03:37:49,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:37:49,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:37:49,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:49,651 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:49,678 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:49,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:49,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-11-12 03:37:49,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577661353] [2020-11-12 03:37:49,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:37:49,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:49,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:37:49,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:37:49,679 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:51,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:51,233 INFO L93 Difference]: Finished difference Result 4664 states and 8555 transitions. [2020-11-12 03:37:51,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 03:37:51,235 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:37:51,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:51,240 INFO L225 Difference]: With dead ends: 4664 [2020-11-12 03:37:51,241 INFO L226 Difference]: Without dead ends: 4394 [2020-11-12 03:37:51,241 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=752, Invalid=2328, Unknown=0, NotChecked=0, Total=3080 [2020-11-12 03:37:51,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4394 states. [2020-11-12 03:37:51,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4394 to 2892. [2020-11-12 03:37:51,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:51,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:37:51,278 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:37:51,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:51,278 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:37:51,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:51,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:37:51,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:37:51,281 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:51,281 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:51,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241,237 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:51,482 INFO L429 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:51,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:51,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1177578347, now seen corresponding path program 232 times [2020-11-12 03:37:51,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:51,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768688281] [2020-11-12 03:37:51,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:52,267 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:52,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768688281] [2020-11-12 03:37:52,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436288814] [2020-11-12 03:37:52,267 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:52,380 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:37:52,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:37:52,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:37:52,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:52,430 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:37:52,453 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:52,478 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:52,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:52,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-12 03:37:52,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518065914] [2020-11-12 03:37:52,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:37:52,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:52,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:37:52,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=631, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:37:52,479 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:54,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:54,401 INFO L93 Difference]: Finished difference Result 4614 states and 8455 transitions. [2020-11-12 03:37:54,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-12 03:37:54,402 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:37:54,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:54,408 INFO L225 Difference]: With dead ends: 4614 [2020-11-12 03:37:54,408 INFO L226 Difference]: Without dead ends: 4344 [2020-11-12 03:37:54,409 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=839, Invalid=2701, Unknown=0, NotChecked=0, Total=3540 [2020-11-12 03:37:54,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4344 states. [2020-11-12 03:37:54,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4344 to 2892. [2020-11-12 03:37:54,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:54,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:37:54,445 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:37:54,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:54,446 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:37:54,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:54,446 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:37:54,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:37:54,448 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:54,448 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:54,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242,238 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:54,649 INFO L429 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:54,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:54,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1653682295, now seen corresponding path program 233 times [2020-11-12 03:37:54,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:54,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495712372] [2020-11-12 03:37:54,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:55,406 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:55,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495712372] [2020-11-12 03:37:55,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51459750] [2020-11-12 03:37:55,406 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:55,520 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-11-12 03:37:55,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:37:55,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:37:55,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:55,551 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:55,575 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:55,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:55,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-11-12 03:37:55,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103187714] [2020-11-12 03:37:55,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:37:55,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:55,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:37:55,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:37:55,577 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:57,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:37:57,352 INFO L93 Difference]: Finished difference Result 4564 states and 8355 transitions. [2020-11-12 03:37:57,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 03:37:57,353 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:37:57,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:37:57,358 INFO L225 Difference]: With dead ends: 4564 [2020-11-12 03:37:57,358 INFO L226 Difference]: Without dead ends: 4294 [2020-11-12 03:37:57,359 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=787, Invalid=2519, Unknown=0, NotChecked=0, Total=3306 [2020-11-12 03:37:57,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4294 states. [2020-11-12 03:37:57,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4294 to 2892. [2020-11-12 03:37:57,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:57,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:37:57,396 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:37:57,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:37:57,396 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:37:57,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:37:57,397 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:37:57,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:37:57,399 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:37:57,399 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:37:57,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 239 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable243 [2020-11-12 03:37:57,600 INFO L429 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:37:57,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:37:57,600 INFO L82 PathProgramCache]: Analyzing trace with hash -653566263, now seen corresponding path program 234 times [2020-11-12 03:37:57,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:37:57,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115017025] [2020-11-12 03:37:57,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:37:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:37:58,358 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:58,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115017025] [2020-11-12 03:37:58,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021090015] [2020-11-12 03:37:58,358 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:37:58,486 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-11-12 03:37:58,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:37:58,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:37:58,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:37:58,536 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:37:58,561 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:37:58,590 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:37:58,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:37:58,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-12 03:37:58,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157090518] [2020-11-12 03:37:58,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:37:58,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:37:58,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:37:58,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:37:58,592 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:00,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:38:00,749 INFO L93 Difference]: Finished difference Result 4514 states and 8255 transitions. [2020-11-12 03:38:00,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-11-12 03:38:00,750 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:38:00,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:38:00,755 INFO L225 Difference]: With dead ends: 4514 [2020-11-12 03:38:00,755 INFO L226 Difference]: Without dead ends: 4244 [2020-11-12 03:38:00,756 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=882, Invalid=2900, Unknown=0, NotChecked=0, Total=3782 [2020-11-12 03:38:00,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4244 states. [2020-11-12 03:38:00,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4244 to 2892. [2020-11-12 03:38:00,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:00,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:38:00,793 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:38:00,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:38:00,793 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:38:00,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:00,793 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:38:00,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:38:00,796 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:38:00,796 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:38:00,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 240 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable244 [2020-11-12 03:38:00,996 INFO L429 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:38:00,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:38:00,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1781223321, now seen corresponding path program 235 times [2020-11-12 03:38:00,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:38:00,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962353003] [2020-11-12 03:38:00,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:38:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:01,719 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:01,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962353003] [2020-11-12 03:38:01,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092823774] [2020-11-12 03:38:01,719 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:01,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:38:01,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:38:01,847 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:38:01,870 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:01,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:38:01,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-11-12 03:38:01,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874818263] [2020-11-12 03:38:01,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:38:01,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:38:01,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:38:01,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:38:01,871 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:03,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:38:03,786 INFO L93 Difference]: Finished difference Result 4464 states and 8155 transitions. [2020-11-12 03:38:03,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 03:38:03,788 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:38:03,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:38:03,793 INFO L225 Difference]: With dead ends: 4464 [2020-11-12 03:38:03,793 INFO L226 Difference]: Without dead ends: 4194 [2020-11-12 03:38:03,794 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=838, Invalid=2702, Unknown=0, NotChecked=0, Total=3540 [2020-11-12 03:38:03,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4194 states. [2020-11-12 03:38:03,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4194 to 2892. [2020-11-12 03:38:03,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:03,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:38:03,831 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:38:03,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:38:03,832 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:38:03,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:03,832 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:38:03,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:38:03,834 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:38:03,834 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:38:04,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 241 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable245 [2020-11-12 03:38:04,035 INFO L429 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:38:04,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:38:04,036 INFO L82 PathProgramCache]: Analyzing trace with hash -373338201, now seen corresponding path program 236 times [2020-11-12 03:38:04,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:38:04,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062946565] [2020-11-12 03:38:04,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:38:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:04,793 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:04,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062946565] [2020-11-12 03:38:04,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222097961] [2020-11-12 03:38:04,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:04,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:38:04,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:38:04,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:38:04,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:38:04,937 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:38:04,964 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:38:04,987 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:04,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:38:04,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-12 03:38:04,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415851371] [2020-11-12 03:38:04,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:38:04,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:38:04,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:38:04,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:38:04,988 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:07,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:38:07,329 INFO L93 Difference]: Finished difference Result 4414 states and 8055 transitions. [2020-11-12 03:38:07,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-11-12 03:38:07,331 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:38:07,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:38:07,336 INFO L225 Difference]: With dead ends: 4414 [2020-11-12 03:38:07,336 INFO L226 Difference]: Without dead ends: 4144 [2020-11-12 03:38:07,336 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=941, Invalid=3091, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 03:38:07,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4144 states. [2020-11-12 03:38:07,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4144 to 2892. [2020-11-12 03:38:07,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:07,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:38:07,372 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:38:07,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:38:07,373 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:38:07,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:07,373 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:38:07,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:38:07,375 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:38:07,375 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:38:07,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 242 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable246 [2020-11-12 03:38:07,576 INFO L429 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:38:07,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:38:07,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1294569787, now seen corresponding path program 237 times [2020-11-12 03:38:07,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:38:07,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788401804] [2020-11-12 03:38:07,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:38:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:08,267 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:08,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788401804] [2020-11-12 03:38:08,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226702391] [2020-11-12 03:38:08,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:08,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-11-12 03:38:08,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:38:08,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:38:08,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:38:08,403 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:38:08,426 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:08,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:38:08,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-11-12 03:38:08,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423109254] [2020-11-12 03:38:08,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:38:08,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:38:08,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:38:08,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:38:08,427 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:10,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:38:10,476 INFO L93 Difference]: Finished difference Result 4364 states and 7955 transitions. [2020-11-12 03:38:10,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 03:38:10,478 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:38:10,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:38:10,482 INFO L225 Difference]: With dead ends: 4364 [2020-11-12 03:38:10,483 INFO L226 Difference]: Without dead ends: 4094 [2020-11-12 03:38:10,483 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=905, Invalid=2877, Unknown=0, NotChecked=0, Total=3782 [2020-11-12 03:38:10,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4094 states. [2020-11-12 03:38:10,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4094 to 2892. [2020-11-12 03:38:10,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:10,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:38:10,519 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:38:10,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:38:10,519 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:38:10,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:10,519 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:38:10,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:38:10,521 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:38:10,522 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:38:10,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 243 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable247 [2020-11-12 03:38:10,722 INFO L429 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:38:10,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:38:10,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1986207237, now seen corresponding path program 238 times [2020-11-12 03:38:10,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:38:10,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811064367] [2020-11-12 03:38:10,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:38:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:11,449 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:11,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811064367] [2020-11-12 03:38:11,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662655276] [2020-11-12 03:38:11,450 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:11,544 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:38:11,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:38:11,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:38:11,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:38:11,596 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:38:11,624 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:38:11,648 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:11,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:38:11,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-12 03:38:11,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155346635] [2020-11-12 03:38:11,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:38:11,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:38:11,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:38:11,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:38:11,650 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:14,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:38:14,175 INFO L93 Difference]: Finished difference Result 4314 states and 7855 transitions. [2020-11-12 03:38:14,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-11-12 03:38:14,177 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:38:14,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:38:14,182 INFO L225 Difference]: With dead ends: 4314 [2020-11-12 03:38:14,182 INFO L226 Difference]: Without dead ends: 4044 [2020-11-12 03:38:14,183 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1016, Invalid=3274, Unknown=0, NotChecked=0, Total=4290 [2020-11-12 03:38:14,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4044 states. [2020-11-12 03:38:14,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4044 to 2892. [2020-11-12 03:38:14,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:14,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:38:14,220 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:38:14,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:38:14,220 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:38:14,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:14,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:38:14,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:38:14,223 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:38:14,223 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:38:14,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248,244 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:14,424 INFO L429 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:38:14,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:38:14,425 INFO L82 PathProgramCache]: Analyzing trace with hash 513993379, now seen corresponding path program 239 times [2020-11-12 03:38:14,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:38:14,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226191046] [2020-11-12 03:38:14,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:38:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:15,100 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:15,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226191046] [2020-11-12 03:38:15,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021745361] [2020-11-12 03:38:15,101 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:15,199 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-11-12 03:38:15,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:38:15,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:38:15,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:38:15,236 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:38:15,256 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:15,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:38:15,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-11-12 03:38:15,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595791939] [2020-11-12 03:38:15,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:38:15,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:38:15,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:38:15,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:38:15,257 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:17,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:38:17,459 INFO L93 Difference]: Finished difference Result 4264 states and 7755 transitions. [2020-11-12 03:38:17,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 03:38:17,460 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:38:17,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:38:17,465 INFO L225 Difference]: With dead ends: 4264 [2020-11-12 03:38:17,465 INFO L226 Difference]: Without dead ends: 3994 [2020-11-12 03:38:17,465 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 957 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=988, Invalid=3044, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 03:38:17,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2020-11-12 03:38:17,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 2892. [2020-11-12 03:38:17,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:17,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:38:17,526 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:38:17,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:38:17,526 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:38:17,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:17,526 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:38:17,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:38:17,529 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:38:17,529 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:38:17,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 245 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable249 [2020-11-12 03:38:17,736 INFO L429 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:38:17,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:38:17,736 INFO L82 PathProgramCache]: Analyzing trace with hash 36022755, now seen corresponding path program 240 times [2020-11-12 03:38:17,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:38:17,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102831130] [2020-11-12 03:38:17,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:38:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:18,431 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:18,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102831130] [2020-11-12 03:38:18,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315149837] [2020-11-12 03:38:18,432 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:18,534 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-11-12 03:38:18,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:38:18,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:38:18,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:38:18,589 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:38:18,619 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:38:18,640 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:18,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:38:18,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-12 03:38:18,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135490937] [2020-11-12 03:38:18,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:38:18,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:38:18,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:38:18,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=643, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:38:18,641 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:21,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:38:21,444 INFO L93 Difference]: Finished difference Result 4214 states and 7655 transitions. [2020-11-12 03:38:21,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-11-12 03:38:21,445 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:38:21,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:38:21,449 INFO L225 Difference]: With dead ends: 4214 [2020-11-12 03:38:21,449 INFO L226 Difference]: Without dead ends: 3944 [2020-11-12 03:38:21,449 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1107, Invalid=3449, Unknown=0, NotChecked=0, Total=4556 [2020-11-12 03:38:21,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3944 states. [2020-11-12 03:38:21,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3944 to 2892. [2020-11-12 03:38:21,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:21,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:38:21,484 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:38:21,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:38:21,484 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:38:21,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:21,485 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:38:21,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:38:21,487 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:38:21,487 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:38:21,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250,246 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:21,688 INFO L429 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:38:21,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:38:21,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1182860289, now seen corresponding path program 241 times [2020-11-12 03:38:21,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:38:21,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607530348] [2020-11-12 03:38:21,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:38:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:22,345 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:22,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607530348] [2020-11-12 03:38:22,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635923787] [2020-11-12 03:38:22,345 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:22,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:38:22,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:38:22,482 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:38:22,503 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:22,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:38:22,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-11-12 03:38:22,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250420720] [2020-11-12 03:38:22,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:38:22,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:38:22,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:38:22,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:38:22,504 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:24,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:38:24,848 INFO L93 Difference]: Finished difference Result 4164 states and 7555 transitions. [2020-11-12 03:38:24,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-12 03:38:24,850 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:38:24,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:38:24,854 INFO L225 Difference]: With dead ends: 4164 [2020-11-12 03:38:24,854 INFO L226 Difference]: Without dead ends: 3894 [2020-11-12 03:38:24,855 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1052 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1087, Invalid=3203, Unknown=0, NotChecked=0, Total=4290 [2020-11-12 03:38:24,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3894 states. [2020-11-12 03:38:24,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3894 to 2892. [2020-11-12 03:38:24,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:24,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:38:24,889 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:38:24,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:38:24,890 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:38:24,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:24,890 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:38:24,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:38:24,892 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:38:24,892 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:38:25,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251,247 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:25,093 INFO L429 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:38:25,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:38:25,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1823616191, now seen corresponding path program 242 times [2020-11-12 03:38:25,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:38:25,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072322114] [2020-11-12 03:38:25,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:38:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:25,773 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:25,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072322114] [2020-11-12 03:38:25,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160560448] [2020-11-12 03:38:25,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:25,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:38:25,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:38:25,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:38:25,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:38:25,920 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:38:25,952 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:38:25,971 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:25,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:38:25,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-12 03:38:25,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057425326] [2020-11-12 03:38:25,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:38:25,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:38:25,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:38:25,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:38:25,972 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:28,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:38:28,892 INFO L93 Difference]: Finished difference Result 4114 states and 7455 transitions. [2020-11-12 03:38:28,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-11-12 03:38:28,894 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:38:28,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:38:28,899 INFO L225 Difference]: With dead ends: 4114 [2020-11-12 03:38:28,899 INFO L226 Difference]: Without dead ends: 3844 [2020-11-12 03:38:28,899 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1214, Invalid=3616, Unknown=0, NotChecked=0, Total=4830 [2020-11-12 03:38:28,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3844 states. [2020-11-12 03:38:28,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3844 to 2892. [2020-11-12 03:38:28,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:28,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:38:28,934 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:38:28,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:38:28,935 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:38:28,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:28,935 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:38:28,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:38:28,937 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:38:28,937 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:38:29,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252,248 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:29,138 INFO L429 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:38:29,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:38:29,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1490000607, now seen corresponding path program 243 times [2020-11-12 03:38:29,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:38:29,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659009422] [2020-11-12 03:38:29,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:38:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:29,800 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:29,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659009422] [2020-11-12 03:38:29,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689675934] [2020-11-12 03:38:29,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:29,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-11-12 03:38:29,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:38:29,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:38:29,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:38:29,949 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:38:29,967 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:29,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:38:29,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-11-12 03:38:29,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262800119] [2020-11-12 03:38:29,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:38:29,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:38:29,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:38:29,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:38:29,968 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:32,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:38:32,413 INFO L93 Difference]: Finished difference Result 4064 states and 7355 transitions. [2020-11-12 03:38:32,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-12 03:38:32,415 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:38:32,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:38:32,419 INFO L225 Difference]: With dead ends: 4064 [2020-11-12 03:38:32,419 INFO L226 Difference]: Without dead ends: 3794 [2020-11-12 03:38:32,420 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1151 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1202, Invalid=3354, Unknown=0, NotChecked=0, Total=4556 [2020-11-12 03:38:32,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3794 states. [2020-11-12 03:38:32,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3794 to 2892. [2020-11-12 03:38:32,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:32,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:38:32,454 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:38:32,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:38:32,455 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:38:32,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:32,455 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:38:32,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:38:32,458 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:38:32,458 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:38:32,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253,249 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:32,659 INFO L429 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:38:32,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:38:32,660 INFO L82 PathProgramCache]: Analyzing trace with hash 825915935, now seen corresponding path program 244 times [2020-11-12 03:38:32,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:38:32,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063497617] [2020-11-12 03:38:32,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:38:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:33,399 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:33,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063497617] [2020-11-12 03:38:33,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824091490] [2020-11-12 03:38:33,399 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:33,492 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:38:33,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:38:33,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:38:33,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:38:33,546 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:38:33,580 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:38:33,598 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:33,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:38:33,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-12 03:38:33,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729954242] [2020-11-12 03:38:33,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:38:33,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:38:33,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:38:33,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=625, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:38:33,600 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:36,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:38:36,854 INFO L93 Difference]: Finished difference Result 4014 states and 7255 transitions. [2020-11-12 03:38:36,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-11-12 03:38:36,855 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:38:36,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:38:36,860 INFO L225 Difference]: With dead ends: 4014 [2020-11-12 03:38:36,860 INFO L226 Difference]: Without dead ends: 3744 [2020-11-12 03:38:36,861 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1289 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1337, Invalid=3775, Unknown=0, NotChecked=0, Total=5112 [2020-11-12 03:38:36,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3744 states. [2020-11-12 03:38:36,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3744 to 2892. [2020-11-12 03:38:36,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:36,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:38:36,896 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:38:36,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:38:36,896 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:38:36,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:36,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:38:36,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:38:36,900 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:38:36,900 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:38:37,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 250 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable254 [2020-11-12 03:38:37,106 INFO L429 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:38:37,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:38:37,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1124437821, now seen corresponding path program 245 times [2020-11-12 03:38:37,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:38:37,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067043607] [2020-11-12 03:38:37,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:38:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:37,769 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:37,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067043607] [2020-11-12 03:38:37,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443004275] [2020-11-12 03:38:37,770 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:37,871 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-11-12 03:38:37,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:38:37,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:38:37,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:38:37,937 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:38:37,968 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:37,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:38:37,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-11-12 03:38:37,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363751059] [2020-11-12 03:38:37,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:38:37,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:38:37,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:38:37,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:38:37,970 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:40,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:38:40,622 INFO L93 Difference]: Finished difference Result 3964 states and 7155 transitions. [2020-11-12 03:38:40,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-11-12 03:38:40,625 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:38:40,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:38:40,630 INFO L225 Difference]: With dead ends: 3964 [2020-11-12 03:38:40,630 INFO L226 Difference]: Without dead ends: 3694 [2020-11-12 03:38:40,631 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1254 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1333, Invalid=3497, Unknown=0, NotChecked=0, Total=4830 [2020-11-12 03:38:40,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3694 states. [2020-11-12 03:38:40,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3694 to 2892. [2020-11-12 03:38:40,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.7963224893917964) internal successors, (5080), 2891 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:40,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5080 transitions. [2020-11-12 03:38:40,674 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5080 transitions. Word has length 136 [2020-11-12 03:38:40,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:38:40,674 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5080 transitions. [2020-11-12 03:38:40,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:40,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5080 transitions. [2020-11-12 03:38:40,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:38:40,677 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:38:40,677 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:38:40,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 251 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable255 [2020-11-12 03:38:40,887 INFO L429 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:38:40,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:38:40,888 INFO L82 PathProgramCache]: Analyzing trace with hash -496861571, now seen corresponding path program 246 times [2020-11-12 03:38:40,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:38:40,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622994404] [2020-11-12 03:38:40,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:38:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:41,584 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:41,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622994404] [2020-11-12 03:38:41,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473512714] [2020-11-12 03:38:41,584 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 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:41,687 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-11-12 03:38:41,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:38:41,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:38:41,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:38:41,742 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:38:41,776 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:38:41,794 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:41,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:38:41,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-12 03:38:41,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297962359] [2020-11-12 03:38:41,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 03:38:41,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:38:41,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 03:38:41,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=610, Unknown=0, NotChecked=0, Total=756 [2020-11-12 03:38:41,795 INFO L87 Difference]: Start difference. First operand 2892 states and 5080 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:45,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:38:45,395 INFO L93 Difference]: Finished difference Result 4363 states and 7900 transitions. [2020-11-12 03:38:45,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-11-12 03:38:45,396 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:38:45,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:38:45,399 INFO L225 Difference]: With dead ends: 4363 [2020-11-12 03:38:45,399 INFO L226 Difference]: Without dead ends: 3854 [2020-11-12 03:38:45,400 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1490 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1497, Invalid=4203, Unknown=0, NotChecked=0, Total=5700 [2020-11-12 03:38:45,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3854 states. [2020-11-12 03:38:45,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3854 to 2912. [2020-11-12 03:38:45,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2912 states, 2848 states have (on average 1.7995084269662922) internal successors, (5125), 2911 states have internal predecessors, (5125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:45,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2912 states to 2912 states and 5125 transitions. [2020-11-12 03:38:45,434 INFO L78 Accepts]: Start accepts. Automaton has 2912 states and 5125 transitions. Word has length 136 [2020-11-12 03:38:45,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:38:45,434 INFO L481 AbstractCegarLoop]: Abstraction has 2912 states and 5125 transitions. [2020-11-12 03:38:45,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:45,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2912 states and 5125 transitions. [2020-11-12 03:38:45,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:38:45,437 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:38:45,437 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:38:45,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 252 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable256 [2020-11-12 03:38:45,639 INFO L429 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:38:45,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:38:45,640 INFO L82 PathProgramCache]: Analyzing trace with hash 637228593, now seen corresponding path program 247 times [2020-11-12 03:38:45,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:38:45,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334372370] [2020-11-12 03:38:45,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:38:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:46,308 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:46,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334372370] [2020-11-12 03:38:46,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2385441] [2020-11-12 03:38:46,309 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:46,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:38:46,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:38:46,448 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:38:46,465 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:46,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:38:46,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-11-12 03:38:46,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089380081] [2020-11-12 03:38:46,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 03:38:46,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:38:46,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 03:38:46,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2020-11-12 03:38:46,467 INFO L87 Difference]: Start difference. First operand 2912 states and 5125 transitions. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:49,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:38:49,306 INFO L93 Difference]: Finished difference Result 5041 states and 8609 transitions. [2020-11-12 03:38:49,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-11-12 03:38:49,307 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:38:49,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:38:49,312 INFO L225 Difference]: With dead ends: 5041 [2020-11-12 03:38:49,312 INFO L226 Difference]: Without dead ends: 4756 [2020-11-12 03:38:49,313 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1360 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1481, Invalid=3631, Unknown=0, NotChecked=0, Total=5112 [2020-11-12 03:38:49,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4756 states. [2020-11-12 03:38:49,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4756 to 2997. [2020-11-12 03:38:49,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2997 states, 2933 states have (on average 1.8148653256051823) internal successors, (5323), 2996 states have internal predecessors, (5323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:49,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2997 states to 2997 states and 5323 transitions. [2020-11-12 03:38:49,351 INFO L78 Accepts]: Start accepts. Automaton has 2997 states and 5323 transitions. Word has length 136 [2020-11-12 03:38:49,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:38:49,351 INFO L481 AbstractCegarLoop]: Abstraction has 2997 states and 5323 transitions. [2020-11-12 03:38:49,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:49,351 INFO L276 IsEmpty]: Start isEmpty. Operand 2997 states and 5323 transitions. [2020-11-12 03:38:49,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 03:38:49,354 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:38:49,354 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:38:49,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 253 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable257 [2020-11-12 03:38:49,554 INFO L429 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:38:49,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:38:49,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1477205785, now seen corresponding path program 248 times [2020-11-12 03:38:49,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:38:49,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322809333] [2020-11-12 03:38:49,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:38:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:50,279 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:50,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322809333] [2020-11-12 03:38:50,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044413088] [2020-11-12 03:38:50,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:50,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:38:50,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:38:50,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 03:38:50,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:38:50,430 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:38:50,487 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:38:50,504 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:50,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:38:50,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2020-11-12 03:38:50,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116062543] [2020-11-12 03:38:50,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:38:50,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:38:50,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:38:50,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:38:50,506 INFO L87 Difference]: Start difference. First operand 2997 states and 5323 transitions. Second operand has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:54,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:38:54,174 INFO L93 Difference]: Finished difference Result 4456 states and 8045 transitions. [2020-11-12 03:38:54,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-11-12 03:38:54,175 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 03:38:54,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:38:54,179 INFO L225 Difference]: With dead ends: 4456 [2020-11-12 03:38:54,179 INFO L226 Difference]: Without dead ends: 3884 [2020-11-12 03:38:54,179 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1685 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1708, Invalid=4612, Unknown=0, NotChecked=0, Total=6320 [2020-11-12 03:38:54,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3884 states. [2020-11-12 03:38:54,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3884 to 2892. [2020-11-12 03:38:54,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2828 states have (on average 1.8086987270155588) internal successors, (5115), 2891 states have internal predecessors, (5115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:54,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5115 transitions. [2020-11-12 03:38:54,215 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5115 transitions. Word has length 136 [2020-11-12 03:38:54,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:38:54,215 INFO L481 AbstractCegarLoop]: Abstraction has 2892 states and 5115 transitions. [2020-11-12 03:38:54,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:54,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5115 transitions. [2020-11-12 03:38:54,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:38:54,219 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:38:54,219 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:38:54,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258,254 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:54,433 INFO L429 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:38:54,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:38:54,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1829268968, now seen corresponding path program 249 times [2020-11-12 03:38:54,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:38:54,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653170338] [2020-11-12 03:38:54,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:38:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:55,325 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:55,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653170338] [2020-11-12 03:38:55,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156673853] [2020-11-12 03:38:55,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:55,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-11-12 03:38:55,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:38:55,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:38:55,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:38:55,509 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:38:55,561 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:55,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:38:55,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-11-12 03:38:55,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829729799] [2020-11-12 03:38:55,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:38:55,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:38:55,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:38:55,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=634, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:38:55,562 INFO L87 Difference]: Start difference. First operand 2892 states and 5115 transitions. Second operand has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:57,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:38:57,314 INFO L93 Difference]: Finished difference Result 4364 states and 7990 transitions. [2020-11-12 03:38:57,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-12 03:38:57,316 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:38:57,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:38:57,321 INFO L225 Difference]: With dead ends: 4364 [2020-11-12 03:38:57,321 INFO L226 Difference]: Without dead ends: 4094 [2020-11-12 03:38:57,321 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=844, Invalid=2348, Unknown=0, NotChecked=0, Total=3192 [2020-11-12 03:38:57,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4094 states. [2020-11-12 03:38:57,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4094 to 2907. [2020-11-12 03:38:57,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2907 states, 2843 states have (on average 1.8044319380935632) internal successors, (5130), 2906 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:57,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2907 states to 2907 states and 5130 transitions. [2020-11-12 03:38:57,358 INFO L78 Accepts]: Start accepts. Automaton has 2907 states and 5130 transitions. Word has length 141 [2020-11-12 03:38:57,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:38:57,358 INFO L481 AbstractCegarLoop]: Abstraction has 2907 states and 5130 transitions. [2020-11-12 03:38:57,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:38:57,358 INFO L276 IsEmpty]: Start isEmpty. Operand 2907 states and 5130 transitions. [2020-11-12 03:38:57,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:38:57,360 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:38:57,360 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:38:57,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 255 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable259 [2020-11-12 03:38:57,561 INFO L429 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:38:57,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:38:57,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1313682136, now seen corresponding path program 250 times [2020-11-12 03:38:57,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:38:57,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967736346] [2020-11-12 03:38:57,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:38:57,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:38:58,506 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:58,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967736346] [2020-11-12 03:38:58,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148973641] [2020-11-12 03:38:58,507 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:38:58,602 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:38:58,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:38:58,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:38:58,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:38:58,677 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:38:58,752 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:38:58,781 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:38:58,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:38:58,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-11-12 03:38:58,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906265089] [2020-11-12 03:38:58,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:38:58,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:38:58,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:38:58,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=699, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:38:58,783 INFO L87 Difference]: Start difference. First operand 2907 states and 5130 transitions. Second operand has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:00,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:39:00,650 INFO L93 Difference]: Finished difference Result 4874 states and 8985 transitions. [2020-11-12 03:39:00,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-12 03:39:00,652 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:39:00,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:39:00,657 INFO L225 Difference]: With dead ends: 4874 [2020-11-12 03:39:00,657 INFO L226 Difference]: Without dead ends: 4604 [2020-11-12 03:39:00,658 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=905, Invalid=2635, Unknown=0, NotChecked=0, Total=3540 [2020-11-12 03:39:00,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4604 states. [2020-11-12 03:39:00,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4604 to 2907. [2020-11-12 03:39:00,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2907 states, 2843 states have (on average 1.8044319380935632) internal successors, (5130), 2906 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:00,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2907 states to 2907 states and 5130 transitions. [2020-11-12 03:39:00,695 INFO L78 Accepts]: Start accepts. Automaton has 2907 states and 5130 transitions. Word has length 141 [2020-11-12 03:39:00,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:39:00,696 INFO L481 AbstractCegarLoop]: Abstraction has 2907 states and 5130 transitions. [2020-11-12 03:39:00,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:00,696 INFO L276 IsEmpty]: Start isEmpty. Operand 2907 states and 5130 transitions. [2020-11-12 03:39:00,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:39:00,698 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:39:00,698 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:39:00,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260,256 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:00,899 INFO L429 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:39:00,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:39:00,900 INFO L82 PathProgramCache]: Analyzing trace with hash 935589446, now seen corresponding path program 251 times [2020-11-12 03:39:00,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:39:00,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366399333] [2020-11-12 03:39:00,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:39:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:01,784 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:01,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366399333] [2020-11-12 03:39:01,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584540880] [2020-11-12 03:39:01,785 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:01,887 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2020-11-12 03:39:01,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:39:01,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:39:01,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:39:01,969 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:39:01,997 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:01,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:39:01,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-11-12 03:39:01,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019141188] [2020-11-12 03:39:01,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:39:01,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:39:01,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:39:01,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:39:01,999 INFO L87 Difference]: Start difference. First operand 2907 states and 5130 transitions. Second operand has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:03,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:39:03,837 INFO L93 Difference]: Finished difference Result 4864 states and 8940 transitions. [2020-11-12 03:39:03,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 03:39:03,839 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:39:03,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:39:03,845 INFO L225 Difference]: With dead ends: 4864 [2020-11-12 03:39:03,845 INFO L226 Difference]: Without dead ends: 4594 [2020-11-12 03:39:03,846 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=899, Invalid=2641, Unknown=0, NotChecked=0, Total=3540 [2020-11-12 03:39:03,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4594 states. [2020-11-12 03:39:03,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4594 to 2907. [2020-11-12 03:39:03,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2907 states, 2843 states have (on average 1.8044319380935632) internal successors, (5130), 2906 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:03,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2907 states to 2907 states and 5130 transitions. [2020-11-12 03:39:03,884 INFO L78 Accepts]: Start accepts. Automaton has 2907 states and 5130 transitions. Word has length 141 [2020-11-12 03:39:03,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:39:03,884 INFO L481 AbstractCegarLoop]: Abstraction has 2907 states and 5130 transitions. [2020-11-12 03:39:03,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:03,884 INFO L276 IsEmpty]: Start isEmpty. Operand 2907 states and 5130 transitions. [2020-11-12 03:39:03,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:39:03,887 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:39:03,887 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:39:04,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261,257 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:04,088 INFO L429 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:39:04,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:39:04,089 INFO L82 PathProgramCache]: Analyzing trace with hash 616588678, now seen corresponding path program 252 times [2020-11-12 03:39:04,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:39:04,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954394986] [2020-11-12 03:39:04,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:39:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:05,019 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:05,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954394986] [2020-11-12 03:39:05,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585518840] [2020-11-12 03:39:05,020 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:05,127 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-12 03:39:05,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:39:05,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:39:05,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:39:05,183 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:39:05,264 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:39:05,292 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:05,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:39:05,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-11-12 03:39:05,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362225713] [2020-11-12 03:39:05,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:39:05,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:39:05,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:39:05,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=716, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:39:05,293 INFO L87 Difference]: Start difference. First operand 2907 states and 5130 transitions. Second operand has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:07,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:39:07,426 INFO L93 Difference]: Finished difference Result 4839 states and 8865 transitions. [2020-11-12 03:39:07,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-12 03:39:07,428 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:39:07,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:39:07,433 INFO L225 Difference]: With dead ends: 4839 [2020-11-12 03:39:07,433 INFO L226 Difference]: Without dead ends: 4569 [2020-11-12 03:39:07,434 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=922, Invalid=2860, Unknown=0, NotChecked=0, Total=3782 [2020-11-12 03:39:07,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4569 states. [2020-11-12 03:39:07,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4569 to 2907. [2020-11-12 03:39:07,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2907 states, 2843 states have (on average 1.8044319380935632) internal successors, (5130), 2906 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:07,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2907 states to 2907 states and 5130 transitions. [2020-11-12 03:39:07,472 INFO L78 Accepts]: Start accepts. Automaton has 2907 states and 5130 transitions. Word has length 141 [2020-11-12 03:39:07,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:39:07,472 INFO L481 AbstractCegarLoop]: Abstraction has 2907 states and 5130 transitions. [2020-11-12 03:39:07,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:07,472 INFO L276 IsEmpty]: Start isEmpty. Operand 2907 states and 5130 transitions. [2020-11-12 03:39:07,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:39:07,475 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:39:07,475 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:39:07,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262,258 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:07,675 INFO L429 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:39:07,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:39:07,676 INFO L82 PathProgramCache]: Analyzing trace with hash -820069340, now seen corresponding path program 253 times [2020-11-12 03:39:07,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:39:07,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962579149] [2020-11-12 03:39:07,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:39:07,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:08,524 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:08,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962579149] [2020-11-12 03:39:08,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628644948] [2020-11-12 03:39:08,525 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 259 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 259 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:08,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:39:08,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:39:08,700 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:39:08,728 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:08,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:39:08,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-11-12 03:39:08,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719902674] [2020-11-12 03:39:08,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:39:08,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:39:08,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:39:08,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:39:08,729 INFO L87 Difference]: Start difference. First operand 2907 states and 5130 transitions. Second operand has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:10,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:39:10,586 INFO L93 Difference]: Finished difference Result 4814 states and 8790 transitions. [2020-11-12 03:39:10,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 03:39:10,588 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:39:10,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:39:10,593 INFO L225 Difference]: With dead ends: 4814 [2020-11-12 03:39:10,593 INFO L226 Difference]: Without dead ends: 4544 [2020-11-12 03:39:10,594 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 835 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=930, Invalid=2852, Unknown=0, NotChecked=0, Total=3782 [2020-11-12 03:39:10,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4544 states. [2020-11-12 03:39:10,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4544 to 2907. [2020-11-12 03:39:10,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2907 states, 2843 states have (on average 1.8044319380935632) internal successors, (5130), 2906 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:10,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2907 states to 2907 states and 5130 transitions. [2020-11-12 03:39:10,632 INFO L78 Accepts]: Start accepts. Automaton has 2907 states and 5130 transitions. Word has length 141 [2020-11-12 03:39:10,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:39:10,632 INFO L481 AbstractCegarLoop]: Abstraction has 2907 states and 5130 transitions. [2020-11-12 03:39:10,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:10,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2907 states and 5130 transitions. [2020-11-12 03:39:10,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:39:10,635 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:39:10,635 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:39:10,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263,259 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:10,836 INFO L429 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:39:10,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:39:10,836 INFO L82 PathProgramCache]: Analyzing trace with hash 817970020, now seen corresponding path program 254 times [2020-11-12 03:39:10,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:39:10,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453506102] [2020-11-12 03:39:10,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:39:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:11,744 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:11,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453506102] [2020-11-12 03:39:11,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859406955] [2020-11-12 03:39:11,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 260 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 260 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:11,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:39:11,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:39:11,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:39:11,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:39:11,896 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:39:11,979 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:39:12,007 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:12,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:39:12,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-11-12 03:39:12,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474712977] [2020-11-12 03:39:12,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:39:12,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:39:12,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:39:12,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=729, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:39:12,008 INFO L87 Difference]: Start difference. First operand 2907 states and 5130 transitions. Second operand has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:14,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:39:14,336 INFO L93 Difference]: Finished difference Result 4789 states and 8715 transitions. [2020-11-12 03:39:14,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-11-12 03:39:14,338 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:39:14,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:39:14,343 INFO L225 Difference]: With dead ends: 4789 [2020-11-12 03:39:14,343 INFO L226 Difference]: Without dead ends: 4519 [2020-11-12 03:39:14,343 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=955, Invalid=3077, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 03:39:14,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4519 states. [2020-11-12 03:39:14,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4519 to 2907. [2020-11-12 03:39:14,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2907 states, 2843 states have (on average 1.8044319380935632) internal successors, (5130), 2906 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:14,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2907 states to 2907 states and 5130 transitions. [2020-11-12 03:39:14,407 INFO L78 Accepts]: Start accepts. Automaton has 2907 states and 5130 transitions. Word has length 141 [2020-11-12 03:39:14,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:39:14,407 INFO L481 AbstractCegarLoop]: Abstraction has 2907 states and 5130 transitions. [2020-11-12 03:39:14,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:14,407 INFO L276 IsEmpty]: Start isEmpty. Operand 2907 states and 5130 transitions. [2020-11-12 03:39:14,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:39:14,409 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:39:14,409 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:39:14,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264,260 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:14,610 INFO L429 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:39:14,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:39:14,611 INFO L82 PathProgramCache]: Analyzing trace with hash -2013290622, now seen corresponding path program 255 times [2020-11-12 03:39:14,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:39:14,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316919571] [2020-11-12 03:39:14,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:39:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:15,422 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:15,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316919571] [2020-11-12 03:39:15,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404722280] [2020-11-12 03:39:15,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 261 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 261 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:15,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-11-12 03:39:15,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:39:15,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:39:15,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:39:15,613 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:39:15,639 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:15,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:39:15,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-11-12 03:39:15,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464063593] [2020-11-12 03:39:15,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:39:15,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:39:15,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:39:15,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:39:15,641 INFO L87 Difference]: Start difference. First operand 2907 states and 5130 transitions. Second operand has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:17,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:39:17,761 INFO L93 Difference]: Finished difference Result 4764 states and 8640 transitions. [2020-11-12 03:39:17,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 03:39:17,762 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:39:17,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:39:17,766 INFO L225 Difference]: With dead ends: 4764 [2020-11-12 03:39:17,766 INFO L226 Difference]: Without dead ends: 4494 [2020-11-12 03:39:17,766 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=977, Invalid=3055, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 03:39:17,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4494 states. [2020-11-12 03:39:17,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4494 to 2907. [2020-11-12 03:39:17,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2907 states, 2843 states have (on average 1.8044319380935632) internal successors, (5130), 2906 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:17,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2907 states to 2907 states and 5130 transitions. [2020-11-12 03:39:17,802 INFO L78 Accepts]: Start accepts. Automaton has 2907 states and 5130 transitions. Word has length 141 [2020-11-12 03:39:17,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:39:17,802 INFO L481 AbstractCegarLoop]: Abstraction has 2907 states and 5130 transitions. [2020-11-12 03:39:17,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:17,802 INFO L276 IsEmpty]: Start isEmpty. Operand 2907 states and 5130 transitions. [2020-11-12 03:39:17,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:39:17,805 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:39:17,805 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:39:18,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 261 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable265 [2020-11-12 03:39:18,005 INFO L429 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:39:18,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:39:18,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1013174590, now seen corresponding path program 256 times [2020-11-12 03:39:18,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:39:18,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64257263] [2020-11-12 03:39:18,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:39:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:18,862 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:18,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64257263] [2020-11-12 03:39:18,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041298969] [2020-11-12 03:39:18,863 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 262 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 262 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:18,957 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:39:18,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:39:18,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:39:18,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:39:19,013 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:39:19,098 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:39:19,123 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:19,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:39:19,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-11-12 03:39:19,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717311838] [2020-11-12 03:39:19,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:39:19,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:39:19,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:39:19,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=738, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:39:19,125 INFO L87 Difference]: Start difference. First operand 2907 states and 5130 transitions. Second operand has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:21,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:39:21,587 INFO L93 Difference]: Finished difference Result 4739 states and 8565 transitions. [2020-11-12 03:39:21,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-11-12 03:39:21,589 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:39:21,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:39:21,594 INFO L225 Difference]: With dead ends: 4739 [2020-11-12 03:39:21,594 INFO L226 Difference]: Without dead ends: 4469 [2020-11-12 03:39:21,594 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 959 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1004, Invalid=3286, Unknown=0, NotChecked=0, Total=4290 [2020-11-12 03:39:21,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4469 states. [2020-11-12 03:39:21,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4469 to 2907. [2020-11-12 03:39:21,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2907 states, 2843 states have (on average 1.8044319380935632) internal successors, (5130), 2906 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:21,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2907 states to 2907 states and 5130 transitions. [2020-11-12 03:39:21,631 INFO L78 Accepts]: Start accepts. Automaton has 2907 states and 5130 transitions. Word has length 141 [2020-11-12 03:39:21,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:39:21,631 INFO L481 AbstractCegarLoop]: Abstraction has 2907 states and 5130 transitions. [2020-11-12 03:39:21,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:21,631 INFO L276 IsEmpty]: Start isEmpty. Operand 2907 states and 5130 transitions. [2020-11-12 03:39:21,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:39:21,634 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:39:21,634 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:39:21,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266,262 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:21,834 INFO L429 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:39:21,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:39:21,835 INFO L82 PathProgramCache]: Analyzing trace with hash -2140831648, now seen corresponding path program 257 times [2020-11-12 03:39:21,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:39:21,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899162392] [2020-11-12 03:39:21,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:39:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:22,640 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:22,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899162392] [2020-11-12 03:39:22,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460037056] [2020-11-12 03:39:22,641 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 263 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 263 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:22,742 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2020-11-12 03:39:22,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:39:22,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:39:22,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:39:22,830 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:39:22,855 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:22,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:39:22,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-11-12 03:39:22,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84426527] [2020-11-12 03:39:22,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:39:22,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:39:22,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:39:22,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:39:22,857 INFO L87 Difference]: Start difference. First operand 2907 states and 5130 transitions. Second operand has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:25,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:39:25,071 INFO L93 Difference]: Finished difference Result 4714 states and 8490 transitions. [2020-11-12 03:39:25,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 03:39:25,072 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:39:25,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:39:25,077 INFO L225 Difference]: With dead ends: 4714 [2020-11-12 03:39:25,077 INFO L226 Difference]: Without dead ends: 4444 [2020-11-12 03:39:25,078 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1040, Invalid=3250, Unknown=0, NotChecked=0, Total=4290 [2020-11-12 03:39:25,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4444 states. [2020-11-12 03:39:25,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4444 to 2907. [2020-11-12 03:39:25,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2907 states, 2843 states have (on average 1.8044319380935632) internal successors, (5130), 2906 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:25,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2907 states to 2907 states and 5130 transitions. [2020-11-12 03:39:25,115 INFO L78 Accepts]: Start accepts. Automaton has 2907 states and 5130 transitions. Word has length 141 [2020-11-12 03:39:25,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:39:25,116 INFO L481 AbstractCegarLoop]: Abstraction has 2907 states and 5130 transitions. [2020-11-12 03:39:25,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:25,116 INFO L276 IsEmpty]: Start isEmpty. Operand 2907 states and 5130 transitions. [2020-11-12 03:39:25,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:39:25,118 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:39:25,118 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:39:25,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 263 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable267 [2020-11-12 03:39:25,319 INFO L429 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:39:25,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:39:25,320 INFO L82 PathProgramCache]: Analyzing trace with hash -732946528, now seen corresponding path program 258 times [2020-11-12 03:39:25,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:39:25,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970384817] [2020-11-12 03:39:25,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:39:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:26,148 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:26,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970384817] [2020-11-12 03:39:26,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642049554] [2020-11-12 03:39:26,148 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 264 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 264 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:26,256 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-12 03:39:26,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:39:26,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:39:26,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:39:26,314 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:39:26,397 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:39:26,422 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:26,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:39:26,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-11-12 03:39:26,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575246056] [2020-11-12 03:39:26,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:39:26,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:39:26,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:39:26,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:39:26,423 INFO L87 Difference]: Start difference. First operand 2907 states and 5130 transitions. Second operand has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:29,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:39:29,042 INFO L93 Difference]: Finished difference Result 4689 states and 8415 transitions. [2020-11-12 03:39:29,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-11-12 03:39:29,043 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:39:29,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:39:29,049 INFO L225 Difference]: With dead ends: 4689 [2020-11-12 03:39:29,049 INFO L226 Difference]: Without dead ends: 4419 [2020-11-12 03:39:29,050 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1065 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1069, Invalid=3487, Unknown=0, NotChecked=0, Total=4556 [2020-11-12 03:39:29,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4419 states. [2020-11-12 03:39:29,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4419 to 2907. [2020-11-12 03:39:29,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2907 states, 2843 states have (on average 1.8044319380935632) internal successors, (5130), 2906 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:29,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2907 states to 2907 states and 5130 transitions. [2020-11-12 03:39:29,087 INFO L78 Accepts]: Start accepts. Automaton has 2907 states and 5130 transitions. Word has length 141 [2020-11-12 03:39:29,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:39:29,087 INFO L481 AbstractCegarLoop]: Abstraction has 2907 states and 5130 transitions. [2020-11-12 03:39:29,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:29,087 INFO L276 IsEmpty]: Start isEmpty. Operand 2907 states and 5130 transitions. [2020-11-12 03:39:29,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:39:29,090 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:39:29,090 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:39:29,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 264 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable268 [2020-11-12 03:39:29,290 INFO L429 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:39:29,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:39:29,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1654178114, now seen corresponding path program 259 times [2020-11-12 03:39:29,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:39:29,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689571862] [2020-11-12 03:39:29,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:39:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:30,067 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:30,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689571862] [2020-11-12 03:39:30,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813253557] [2020-11-12 03:39:30,067 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 265 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 265 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:30,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:39:30,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:39:30,257 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:39:30,282 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:30,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:39:30,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-11-12 03:39:30,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266591589] [2020-11-12 03:39:30,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:39:30,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:39:30,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:39:30,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:39:30,284 INFO L87 Difference]: Start difference. First operand 2907 states and 5130 transitions. Second operand has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:32,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:39:32,581 INFO L93 Difference]: Finished difference Result 4664 states and 8340 transitions. [2020-11-12 03:39:32,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-12 03:39:32,583 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:39:32,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:39:32,588 INFO L225 Difference]: With dead ends: 4664 [2020-11-12 03:39:32,588 INFO L226 Difference]: Without dead ends: 4394 [2020-11-12 03:39:32,589 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1119, Invalid=3437, Unknown=0, NotChecked=0, Total=4556 [2020-11-12 03:39:32,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4394 states. [2020-11-12 03:39:32,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4394 to 2907. [2020-11-12 03:39:32,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2907 states, 2843 states have (on average 1.8044319380935632) internal successors, (5130), 2906 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:32,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2907 states to 2907 states and 5130 transitions. [2020-11-12 03:39:32,626 INFO L78 Accepts]: Start accepts. Automaton has 2907 states and 5130 transitions. Word has length 141 [2020-11-12 03:39:32,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:39:32,626 INFO L481 AbstractCegarLoop]: Abstraction has 2907 states and 5130 transitions. [2020-11-12 03:39:32,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:32,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2907 states and 5130 transitions. [2020-11-12 03:39:32,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:39:32,629 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:39:32,629 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:39:32,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269,265 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:32,829 INFO L429 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:39:32,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:39:32,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1626598910, now seen corresponding path program 260 times [2020-11-12 03:39:32,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:39:32,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264132966] [2020-11-12 03:39:32,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:39:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:33,729 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:33,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264132966] [2020-11-12 03:39:33,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409911553] [2020-11-12 03:39:33,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 266 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 266 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:33,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:39:33,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:39:33,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:39:33,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:39:33,879 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:39:33,965 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:39:34,008 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:34,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:39:34,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-11-12 03:39:34,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348729509] [2020-11-12 03:39:34,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:39:34,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:39:34,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:39:34,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:39:34,014 INFO L87 Difference]: Start difference. First operand 2907 states and 5130 transitions. Second operand has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:36,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:39:36,799 INFO L93 Difference]: Finished difference Result 4639 states and 8265 transitions. [2020-11-12 03:39:36,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-11-12 03:39:36,801 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:39:36,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:39:36,806 INFO L225 Difference]: With dead ends: 4639 [2020-11-12 03:39:36,806 INFO L226 Difference]: Without dead ends: 4369 [2020-11-12 03:39:36,807 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1150, Invalid=3680, Unknown=0, NotChecked=0, Total=4830 [2020-11-12 03:39:36,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4369 states. [2020-11-12 03:39:36,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4369 to 2907. [2020-11-12 03:39:36,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2907 states, 2843 states have (on average 1.8044319380935632) internal successors, (5130), 2906 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:36,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2907 states to 2907 states and 5130 transitions. [2020-11-12 03:39:36,844 INFO L78 Accepts]: Start accepts. Automaton has 2907 states and 5130 transitions. Word has length 141 [2020-11-12 03:39:36,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:39:36,844 INFO L481 AbstractCegarLoop]: Abstraction has 2907 states and 5130 transitions. [2020-11-12 03:39:36,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:36,844 INFO L276 IsEmpty]: Start isEmpty. Operand 2907 states and 5130 transitions. [2020-11-12 03:39:36,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:39:36,847 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:39:36,847 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:39:37,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 266 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable270 [2020-11-12 03:39:37,048 INFO L429 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:39:37,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:39:37,048 INFO L82 PathProgramCache]: Analyzing trace with hash 154385052, now seen corresponding path program 261 times [2020-11-12 03:39:37,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:39:37,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910893156] [2020-11-12 03:39:37,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:39:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:37,846 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:37,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910893156] [2020-11-12 03:39:37,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852163763] [2020-11-12 03:39:37,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 267 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 267 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:37,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-11-12 03:39:37,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:39:37,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:39:37,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:39:38,044 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:39:38,066 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:38,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:39:38,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-11-12 03:39:38,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933960649] [2020-11-12 03:39:38,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:39:38,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:39:38,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:39:38,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:39:38,068 INFO L87 Difference]: Start difference. First operand 2907 states and 5130 transitions. Second operand has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:40,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:39:40,497 INFO L93 Difference]: Finished difference Result 4614 states and 8190 transitions. [2020-11-12 03:39:40,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-12 03:39:40,499 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:39:40,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:39:40,504 INFO L225 Difference]: With dead ends: 4614 [2020-11-12 03:39:40,504 INFO L226 Difference]: Without dead ends: 4344 [2020-11-12 03:39:40,505 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1255 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1214, Invalid=3616, Unknown=0, NotChecked=0, Total=4830 [2020-11-12 03:39:40,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4344 states. [2020-11-12 03:39:40,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4344 to 2907. [2020-11-12 03:39:40,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2907 states, 2843 states have (on average 1.8044319380935632) internal successors, (5130), 2906 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:40,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2907 states to 2907 states and 5130 transitions. [2020-11-12 03:39:40,542 INFO L78 Accepts]: Start accepts. Automaton has 2907 states and 5130 transitions. Word has length 141 [2020-11-12 03:39:40,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:39:40,542 INFO L481 AbstractCegarLoop]: Abstraction has 2907 states and 5130 transitions. [2020-11-12 03:39:40,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:40,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2907 states and 5130 transitions. [2020-11-12 03:39:40,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:39:40,545 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:39:40,545 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:39:40,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271,267 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:40,745 INFO L429 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:39:40,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:39:40,746 INFO L82 PathProgramCache]: Analyzing trace with hash -323585572, now seen corresponding path program 262 times [2020-11-12 03:39:40,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:39:40,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250771947] [2020-11-12 03:39:40,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:39:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:41,569 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:41,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250771947] [2020-11-12 03:39:41,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345445760] [2020-11-12 03:39:41,569 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 268 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 268 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:41,662 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:39:41,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:39:41,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:39:41,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:39:41,725 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:39:41,830 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:39:41,871 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:41,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:39:41,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-11-12 03:39:41,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881879926] [2020-11-12 03:39:41,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:39:41,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:39:41,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:39:41,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=741, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:39:41,872 INFO L87 Difference]: Start difference. First operand 2907 states and 5130 transitions. Second operand has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:44,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:39:44,901 INFO L93 Difference]: Finished difference Result 4589 states and 8115 transitions. [2020-11-12 03:39:44,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-11-12 03:39:44,903 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:39:44,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:39:44,908 INFO L225 Difference]: With dead ends: 4589 [2020-11-12 03:39:44,908 INFO L226 Difference]: Without dead ends: 4319 [2020-11-12 03:39:44,909 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1289 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1247, Invalid=3865, Unknown=0, NotChecked=0, Total=5112 [2020-11-12 03:39:44,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4319 states. [2020-11-12 03:39:44,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4319 to 2907. [2020-11-12 03:39:44,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2907 states, 2843 states have (on average 1.8044319380935632) internal successors, (5130), 2906 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:44,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2907 states to 2907 states and 5130 transitions. [2020-11-12 03:39:44,962 INFO L78 Accepts]: Start accepts. Automaton has 2907 states and 5130 transitions. Word has length 141 [2020-11-12 03:39:44,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:39:44,962 INFO L481 AbstractCegarLoop]: Abstraction has 2907 states and 5130 transitions. [2020-11-12 03:39:44,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:44,962 INFO L276 IsEmpty]: Start isEmpty. Operand 2907 states and 5130 transitions. [2020-11-12 03:39:44,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:39:44,964 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:39:44,965 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:39:45,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272,268 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:45,165 INFO L429 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:39:45,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:39:45,166 INFO L82 PathProgramCache]: Analyzing trace with hash 823251962, now seen corresponding path program 263 times [2020-11-12 03:39:45,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:39:45,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740078761] [2020-11-12 03:39:45,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:39:45,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:45,942 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:45,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740078761] [2020-11-12 03:39:45,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535856457] [2020-11-12 03:39:45,942 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 269 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 269 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:46,045 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-11-12 03:39:46,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:39:46,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:39:46,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:39:46,139 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:39:46,161 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:46,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:39:46,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-11-12 03:39:46,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129649949] [2020-11-12 03:39:46,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:39:46,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:39:46,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:39:46,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:39:46,162 INFO L87 Difference]: Start difference. First operand 2907 states and 5130 transitions. Second operand has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:48,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:39:48,785 INFO L93 Difference]: Finished difference Result 4564 states and 8040 transitions. [2020-11-12 03:39:48,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-11-12 03:39:48,786 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:39:48,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:39:48,791 INFO L225 Difference]: With dead ends: 4564 [2020-11-12 03:39:48,791 INFO L226 Difference]: Without dead ends: 4294 [2020-11-12 03:39:48,792 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1370 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1325, Invalid=3787, Unknown=0, NotChecked=0, Total=5112 [2020-11-12 03:39:48,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4294 states. [2020-11-12 03:39:48,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4294 to 2907. [2020-11-12 03:39:48,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2907 states, 2843 states have (on average 1.8044319380935632) internal successors, (5130), 2906 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:48,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2907 states to 2907 states and 5130 transitions. [2020-11-12 03:39:48,827 INFO L78 Accepts]: Start accepts. Automaton has 2907 states and 5130 transitions. Word has length 141 [2020-11-12 03:39:48,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:39:48,828 INFO L481 AbstractCegarLoop]: Abstraction has 2907 states and 5130 transitions. [2020-11-12 03:39:48,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:48,828 INFO L276 IsEmpty]: Start isEmpty. Operand 2907 states and 5130 transitions. [2020-11-12 03:39:48,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:39:48,830 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:39:48,830 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:39:49,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273,269 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:49,031 INFO L429 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:39:49,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:39:49,031 INFO L82 PathProgramCache]: Analyzing trace with hash 2111742778, now seen corresponding path program 264 times [2020-11-12 03:39:49,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:39:49,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416185724] [2020-11-12 03:39:49,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:39:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:49,835 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:49,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416185724] [2020-11-12 03:39:49,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511306091] [2020-11-12 03:39:49,835 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 270 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 270 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:49,938 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-11-12 03:39:49,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:39:49,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:39:49,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:39:49,997 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:39:50,086 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:39:50,116 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:50,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:39:50,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-11-12 03:39:50,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499035262] [2020-11-12 03:39:50,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:39:50,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:39:50,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:39:50,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:39:50,118 INFO L87 Difference]: Start difference. First operand 2907 states and 5130 transitions. Second operand has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:53,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:39:53,320 INFO L93 Difference]: Finished difference Result 4539 states and 7965 transitions. [2020-11-12 03:39:53,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-11-12 03:39:53,321 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:39:53,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:39:53,326 INFO L225 Difference]: With dead ends: 4539 [2020-11-12 03:39:53,326 INFO L226 Difference]: Without dead ends: 4269 [2020-11-12 03:39:53,327 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1407 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1360, Invalid=4042, Unknown=0, NotChecked=0, Total=5402 [2020-11-12 03:39:53,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4269 states. [2020-11-12 03:39:53,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4269 to 2907. [2020-11-12 03:39:53,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2907 states, 2843 states have (on average 1.8044319380935632) internal successors, (5130), 2906 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:53,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2907 states to 2907 states and 5130 transitions. [2020-11-12 03:39:53,363 INFO L78 Accepts]: Start accepts. Automaton has 2907 states and 5130 transitions. Word has length 141 [2020-11-12 03:39:53,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:39:53,363 INFO L481 AbstractCegarLoop]: Abstraction has 2907 states and 5130 transitions. [2020-11-12 03:39:53,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:53,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2907 states and 5130 transitions. [2020-11-12 03:39:53,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:39:53,366 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:39:53,366 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:39:53,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274,270 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:53,567 INFO L429 AbstractCegarLoop]: === Iteration 276 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:39:53,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:39:53,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1130392280, now seen corresponding path program 265 times [2020-11-12 03:39:53,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:39:53,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263110765] [2020-11-12 03:39:53,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:39:53,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:54,326 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:54,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263110765] [2020-11-12 03:39:54,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133904864] [2020-11-12 03:39:54,326 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 271 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 271 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:54,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:39:54,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:39:54,516 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:39:54,537 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:54,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:39:54,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-11-12 03:39:54,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546380012] [2020-11-12 03:39:54,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:39:54,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:39:54,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:39:54,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:39:54,539 INFO L87 Difference]: Start difference. First operand 2907 states and 5130 transitions. Second operand has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:57,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:39:57,282 INFO L93 Difference]: Finished difference Result 4514 states and 7890 transitions. [2020-11-12 03:39:57,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-11-12 03:39:57,284 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:39:57,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:39:57,290 INFO L225 Difference]: With dead ends: 4514 [2020-11-12 03:39:57,290 INFO L226 Difference]: Without dead ends: 4244 [2020-11-12 03:39:57,291 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1489 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1452, Invalid=3950, Unknown=0, NotChecked=0, Total=5402 [2020-11-12 03:39:57,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4244 states. [2020-11-12 03:39:57,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4244 to 2907. [2020-11-12 03:39:57,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2907 states, 2843 states have (on average 1.8044319380935632) internal successors, (5130), 2906 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:57,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2907 states to 2907 states and 5130 transitions. [2020-11-12 03:39:57,335 INFO L78 Accepts]: Start accepts. Automaton has 2907 states and 5130 transitions. Word has length 141 [2020-11-12 03:39:57,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:39:57,335 INFO L481 AbstractCegarLoop]: Abstraction has 2907 states and 5130 transitions. [2020-11-12 03:39:57,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:39:57,335 INFO L276 IsEmpty]: Start isEmpty. Operand 2907 states and 5130 transitions. [2020-11-12 03:39:57,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:39:57,338 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:39:57,338 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:39:57,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275,271 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:57,538 INFO L429 AbstractCegarLoop]: === Iteration 277 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:39:57,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:39:57,539 INFO L82 PathProgramCache]: Analyzing trace with hash 466307608, now seen corresponding path program 266 times [2020-11-12 03:39:57,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:39:57,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651317992] [2020-11-12 03:39:57,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:39:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:39:58,342 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:58,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651317992] [2020-11-12 03:39:58,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130242334] [2020-11-12 03:39:58,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 272 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 272 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:39:58,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:39:58,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:39:58,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:39:58,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:39:58,493 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:39:58,581 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:39:58,621 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:39:58,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:39:58,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-11-12 03:39:58,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027677019] [2020-11-12 03:39:58,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:39:58,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:39:58,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:39:58,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=723, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:39:58,623 INFO L87 Difference]: Start difference. First operand 2907 states and 5130 transitions. Second operand has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:02,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:40:02,001 INFO L93 Difference]: Finished difference Result 4489 states and 7815 transitions. [2020-11-12 03:40:02,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-11-12 03:40:02,003 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:40:02,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:40:02,008 INFO L225 Difference]: With dead ends: 4489 [2020-11-12 03:40:02,008 INFO L226 Difference]: Without dead ends: 4219 [2020-11-12 03:40:02,009 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1529 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1489, Invalid=4211, Unknown=0, NotChecked=0, Total=5700 [2020-11-12 03:40:02,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4219 states. [2020-11-12 03:40:02,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4219 to 2907. [2020-11-12 03:40:02,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2907 states, 2843 states have (on average 1.8044319380935632) internal successors, (5130), 2906 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:02,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2907 states to 2907 states and 5130 transitions. [2020-11-12 03:40:02,045 INFO L78 Accepts]: Start accepts. Automaton has 2907 states and 5130 transitions. Word has length 141 [2020-11-12 03:40:02,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:40:02,046 INFO L481 AbstractCegarLoop]: Abstraction has 2907 states and 5130 transitions. [2020-11-12 03:40:02,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:02,046 INFO L276 IsEmpty]: Start isEmpty. Operand 2907 states and 5130 transitions. [2020-11-12 03:40:02,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:40:02,048 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:40:02,048 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:40:02,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276,272 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:02,249 INFO L429 AbstractCegarLoop]: === Iteration 278 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:40:02,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:40:02,250 INFO L82 PathProgramCache]: Analyzing trace with hash 764829494, now seen corresponding path program 267 times [2020-11-12 03:40:02,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:40:02,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785268825] [2020-11-12 03:40:02,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:40:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:40:03,039 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:03,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785268825] [2020-11-12 03:40:03,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907867357] [2020-11-12 03:40:03,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 273 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 273 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:03,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-11-12 03:40:03,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:40:03,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:40:03,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:40:03,245 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:40:03,265 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:03,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:40:03,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-11-12 03:40:03,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147142781] [2020-11-12 03:40:03,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:40:03,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:40:03,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:40:03,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:40:03,266 INFO L87 Difference]: Start difference. First operand 2907 states and 5130 transitions. Second operand has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:06,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:40:06,078 INFO L93 Difference]: Finished difference Result 4464 states and 7740 transitions. [2020-11-12 03:40:06,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-11-12 03:40:06,080 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:40:06,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:40:06,084 INFO L225 Difference]: With dead ends: 4464 [2020-11-12 03:40:06,084 INFO L226 Difference]: Without dead ends: 4194 [2020-11-12 03:40:06,085 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1612 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1595, Invalid=4105, Unknown=0, NotChecked=0, Total=5700 [2020-11-12 03:40:06,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4194 states. [2020-11-12 03:40:06,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4194 to 2907. [2020-11-12 03:40:06,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2907 states, 2843 states have (on average 1.8044319380935632) internal successors, (5130), 2906 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:06,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2907 states to 2907 states and 5130 transitions. [2020-11-12 03:40:06,122 INFO L78 Accepts]: Start accepts. Automaton has 2907 states and 5130 transitions. Word has length 141 [2020-11-12 03:40:06,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:40:06,122 INFO L481 AbstractCegarLoop]: Abstraction has 2907 states and 5130 transitions. [2020-11-12 03:40:06,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:06,123 INFO L276 IsEmpty]: Start isEmpty. Operand 2907 states and 5130 transitions. [2020-11-12 03:40:06,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:40:06,125 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:40:06,125 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:40:06,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 273 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable277 [2020-11-12 03:40:06,326 INFO L429 AbstractCegarLoop]: === Iteration 279 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:40:06,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:40:06,326 INFO L82 PathProgramCache]: Analyzing trace with hash -856469898, now seen corresponding path program 268 times [2020-11-12 03:40:06,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:40:06,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507155475] [2020-11-12 03:40:06,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:40:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:40:07,130 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:07,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507155475] [2020-11-12 03:40:07,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978678128] [2020-11-12 03:40:07,131 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 274 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 274 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:07,221 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:40:07,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:40:07,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:40:07,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:40:07,281 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:40:07,370 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:40:07,390 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:07,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:40:07,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-11-12 03:40:07,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658608573] [2020-11-12 03:40:07,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:40:07,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:40:07,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:40:07,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:40:07,392 INFO L87 Difference]: Start difference. First operand 2907 states and 5130 transitions. Second operand has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:10,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:40:10,971 INFO L93 Difference]: Finished difference Result 4504 states and 7782 transitions. [2020-11-12 03:40:10,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-11-12 03:40:10,972 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:40:10,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:40:10,978 INFO L225 Difference]: With dead ends: 4504 [2020-11-12 03:40:10,978 INFO L226 Difference]: Without dead ends: 4234 [2020-11-12 03:40:10,978 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1655 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1634, Invalid=4372, Unknown=0, NotChecked=0, Total=6006 [2020-11-12 03:40:10,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4234 states. [2020-11-12 03:40:11,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4234 to 2927. [2020-11-12 03:40:11,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2927 states, 2863 states have (on average 1.8075445337059028) internal successors, (5175), 2926 states have internal predecessors, (5175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:11,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2927 states to 2927 states and 5175 transitions. [2020-11-12 03:40:11,015 INFO L78 Accepts]: Start accepts. Automaton has 2927 states and 5175 transitions. Word has length 141 [2020-11-12 03:40:11,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:40:11,015 INFO L481 AbstractCegarLoop]: Abstraction has 2927 states and 5175 transitions. [2020-11-12 03:40:11,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:11,015 INFO L276 IsEmpty]: Start isEmpty. Operand 2927 states and 5175 transitions. [2020-11-12 03:40:11,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:40:11,018 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:40:11,018 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:40:11,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 274 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable278 [2020-11-12 03:40:11,218 INFO L429 AbstractCegarLoop]: === Iteration 280 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:40:11,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:40:11,219 INFO L82 PathProgramCache]: Analyzing trace with hash 277620266, now seen corresponding path program 269 times [2020-11-12 03:40:11,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:40:11,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978258181] [2020-11-12 03:40:11,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:40:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:40:11,979 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:11,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978258181] [2020-11-12 03:40:11,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725157184] [2020-11-12 03:40:11,979 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 275 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 275 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:12,080 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-11-12 03:40:12,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:40:12,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:40:12,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:40:12,188 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:40:12,207 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:12,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:40:12,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-11-12 03:40:12,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42980829] [2020-11-12 03:40:12,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:40:12,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:40:12,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:40:12,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=634, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:40:12,208 INFO L87 Difference]: Start difference. First operand 2927 states and 5175 transitions. Second operand has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:15,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:40:15,253 INFO L93 Difference]: Finished difference Result 5566 states and 9194 transitions. [2020-11-12 03:40:15,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-11-12 03:40:15,254 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:40:15,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:40:15,260 INFO L225 Difference]: With dead ends: 5566 [2020-11-12 03:40:15,260 INFO L226 Difference]: Without dead ends: 5281 [2020-11-12 03:40:15,261 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1738 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1755, Invalid=4251, Unknown=0, NotChecked=0, Total=6006 [2020-11-12 03:40:15,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5281 states. [2020-11-12 03:40:15,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5281 to 3012. [2020-11-12 03:40:15,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3012 states, 2948 states have (on average 1.8225915875169607) internal successors, (5373), 3011 states have internal predecessors, (5373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:15,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3012 states to 3012 states and 5373 transitions. [2020-11-12 03:40:15,302 INFO L78 Accepts]: Start accepts. Automaton has 3012 states and 5373 transitions. Word has length 141 [2020-11-12 03:40:15,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:40:15,303 INFO L481 AbstractCegarLoop]: Abstraction has 3012 states and 5373 transitions. [2020-11-12 03:40:15,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:15,303 INFO L276 IsEmpty]: Start isEmpty. Operand 3012 states and 5373 transitions. [2020-11-12 03:40:15,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 03:40:15,305 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:40:15,305 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:40:15,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 275 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable279 [2020-11-12 03:40:15,506 INFO L429 AbstractCegarLoop]: === Iteration 281 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:40:15,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:40:15,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1117597458, now seen corresponding path program 270 times [2020-11-12 03:40:15,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:40:15,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846526818] [2020-11-12 03:40:15,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:40:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:40:16,287 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:16,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846526818] [2020-11-12 03:40:16,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395475349] [2020-11-12 03:40:16,287 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 276 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 276 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:16,387 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-11-12 03:40:16,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:40:16,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 03:40:16,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:40:16,447 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:40:16,487 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:40:16,507 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:16,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:40:16,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-11-12 03:40:16,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047495000] [2020-11-12 03:40:16,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 03:40:16,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:40:16,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 03:40:16,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=634, Unknown=0, NotChecked=0, Total=812 [2020-11-12 03:40:16,509 INFO L87 Difference]: Start difference. First operand 3012 states and 5373 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:20,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:40:20,153 INFO L93 Difference]: Finished difference Result 4565 states and 7789 transitions. [2020-11-12 03:40:20,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-11-12 03:40:20,155 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 03:40:20,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:40:20,160 INFO L225 Difference]: With dead ends: 4565 [2020-11-12 03:40:20,160 INFO L226 Difference]: Without dead ends: 4169 [2020-11-12 03:40:20,161 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1741 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1768, Invalid=4394, Unknown=0, NotChecked=0, Total=6162 [2020-11-12 03:40:20,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4169 states. [2020-11-12 03:40:20,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4169 to 2907. [2020-11-12 03:40:20,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2907 states, 2843 states have (on average 1.8167428772423497) internal successors, (5165), 2906 states have internal predecessors, (5165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:20,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2907 states to 2907 states and 5165 transitions. [2020-11-12 03:40:20,198 INFO L78 Accepts]: Start accepts. Automaton has 2907 states and 5165 transitions. Word has length 141 [2020-11-12 03:40:20,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:40:20,198 INFO L481 AbstractCegarLoop]: Abstraction has 2907 states and 5165 transitions. [2020-11-12 03:40:20,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:20,199 INFO L276 IsEmpty]: Start isEmpty. Operand 2907 states and 5165 transitions. [2020-11-12 03:40:20,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:40:20,201 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:40:20,201 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:40:20,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 276 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable280 [2020-11-12 03:40:20,402 INFO L429 AbstractCegarLoop]: === Iteration 282 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:40:20,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:40:20,402 INFO L82 PathProgramCache]: Analyzing trace with hash 524878084, now seen corresponding path program 271 times [2020-11-12 03:40:20,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:40:20,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42364703] [2020-11-12 03:40:20,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:40:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:40:21,425 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:21,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42364703] [2020-11-12 03:40:21,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556090964] [2020-11-12 03:40:21,425 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 277 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 277 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:40:21,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:40:21,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:40:21,632 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:40:21,698 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:40:21,734 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:21,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:40:21,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 33 [2020-11-12 03:40:21,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350011208] [2020-11-12 03:40:21,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-12 03:40:21,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:40:21,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-12 03:40:21,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=819, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 03:40:21,735 INFO L87 Difference]: Start difference. First operand 2907 states and 5165 transitions. Second operand has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:23,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:40:23,769 INFO L93 Difference]: Finished difference Result 4265 states and 7609 transitions. [2020-11-12 03:40:23,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-12 03:40:23,770 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:40:23,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:40:23,775 INFO L225 Difference]: With dead ends: 4265 [2020-11-12 03:40:23,775 INFO L226 Difference]: Without dead ends: 3931 [2020-11-12 03:40:23,776 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1064, Invalid=2842, Unknown=0, NotChecked=0, Total=3906 [2020-11-12 03:40:23,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2020-11-12 03:40:23,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 2982. [2020-11-12 03:40:23,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2982 states, 2918 states have (on average 1.82145305003427) internal successors, (5315), 2981 states have internal predecessors, (5315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:23,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 5315 transitions. [2020-11-12 03:40:23,812 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 5315 transitions. Word has length 146 [2020-11-12 03:40:23,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:40:23,812 INFO L481 AbstractCegarLoop]: Abstraction has 2982 states and 5315 transitions. [2020-11-12 03:40:23,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:23,813 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 5315 transitions. [2020-11-12 03:40:23,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:40:23,815 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:40:23,815 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:40:24,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281,277 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:24,016 INFO L429 AbstractCegarLoop]: === Iteration 283 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:40:24,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:40:24,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1598074278, now seen corresponding path program 272 times [2020-11-12 03:40:24,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:40:24,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699155126] [2020-11-12 03:40:24,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:40:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:40:25,104 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:25,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699155126] [2020-11-12 03:40:25,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878997824] [2020-11-12 03:40:25,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 278 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 278 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:25,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:40:25,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:40:25,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:40:25,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:40:25,286 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:40:25,318 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:25,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:40:25,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2020-11-12 03:40:25,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170343457] [2020-11-12 03:40:25,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:40:25,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:40:25,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:40:25,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:40:25,320 INFO L87 Difference]: Start difference. First operand 2982 states and 5315 transitions. Second operand has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:27,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:40:27,004 INFO L93 Difference]: Finished difference Result 5159 states and 9590 transitions. [2020-11-12 03:40:27,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-12 03:40:27,006 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:40:27,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:40:27,011 INFO L225 Difference]: With dead ends: 5159 [2020-11-12 03:40:27,011 INFO L226 Difference]: Without dead ends: 4889 [2020-11-12 03:40:27,012 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=894, Invalid=2298, Unknown=0, NotChecked=0, Total=3192 [2020-11-12 03:40:27,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4889 states. [2020-11-12 03:40:27,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4889 to 3042. [2020-11-12 03:40:27,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3042 states, 2978 states have (on average 1.8132975151108126) internal successors, (5400), 3041 states have internal predecessors, (5400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:27,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3042 states to 3042 states and 5400 transitions. [2020-11-12 03:40:27,052 INFO L78 Accepts]: Start accepts. Automaton has 3042 states and 5400 transitions. Word has length 146 [2020-11-12 03:40:27,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:40:27,052 INFO L481 AbstractCegarLoop]: Abstraction has 3042 states and 5400 transitions. [2020-11-12 03:40:27,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:27,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3042 states and 5400 transitions. [2020-11-12 03:40:27,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:40:27,055 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:40:27,055 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:40:27,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 278 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable282 [2020-11-12 03:40:27,256 INFO L429 AbstractCegarLoop]: === Iteration 284 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:40:27,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:40:27,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1709040858, now seen corresponding path program 273 times [2020-11-12 03:40:27,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:40:27,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267492647] [2020-11-12 03:40:27,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:40:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:40:28,402 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:28,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267492647] [2020-11-12 03:40:28,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114913134] [2020-11-12 03:40:28,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 279 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 279 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:28,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-11-12 03:40:28,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:40:28,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:40:28,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:40:28,572 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:40:28,678 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:40:28,727 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:28,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:40:28,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-11-12 03:40:28,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089957781] [2020-11-12 03:40:28,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 03:40:28,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:40:28,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 03:40:28,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=736, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:40:28,729 INFO L87 Difference]: Start difference. First operand 3042 states and 5400 transitions. Second operand has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:30,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:40:30,751 INFO L93 Difference]: Finished difference Result 5089 states and 9425 transitions. [2020-11-12 03:40:30,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-12 03:40:30,752 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:40:30,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:40:30,757 INFO L225 Difference]: With dead ends: 5089 [2020-11-12 03:40:30,757 INFO L226 Difference]: Without dead ends: 4819 [2020-11-12 03:40:30,758 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=971, Invalid=2689, Unknown=0, NotChecked=0, Total=3660 [2020-11-12 03:40:30,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4819 states. [2020-11-12 03:40:30,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4819 to 3067. [2020-11-12 03:40:30,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3067 states, 3003 states have (on average 1.8065268065268065) internal successors, (5425), 3066 states have internal predecessors, (5425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:30,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3067 states to 3067 states and 5425 transitions. [2020-11-12 03:40:30,814 INFO L78 Accepts]: Start accepts. Automaton has 3067 states and 5425 transitions. Word has length 146 [2020-11-12 03:40:30,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:40:30,815 INFO L481 AbstractCegarLoop]: Abstraction has 3067 states and 5425 transitions. [2020-11-12 03:40:30,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:30,815 INFO L276 IsEmpty]: Start isEmpty. Operand 3067 states and 5425 transitions. [2020-11-12 03:40:30,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:40:30,817 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:40:30,817 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:40:31,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283,279 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:31,018 INFO L429 AbstractCegarLoop]: === Iteration 285 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:40:31,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:40:31,019 INFO L82 PathProgramCache]: Analyzing trace with hash -217079106, now seen corresponding path program 274 times [2020-11-12 03:40:31,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:40:31,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101513781] [2020-11-12 03:40:31,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:40:31,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:40:32,008 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:32,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101513781] [2020-11-12 03:40:32,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595599283] [2020-11-12 03:40:32,009 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 280 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 280 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:32,107 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:40:32,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:40:32,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-12 03:40:32,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:40:32,197 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:40:32,228 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:32,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:40:32,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2020-11-12 03:40:32,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355287304] [2020-11-12 03:40:32,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:40:32,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:40:32,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:40:32,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:40:32,229 INFO L87 Difference]: Start difference. First operand 3067 states and 5425 transitions. Second operand has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:34,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:40:34,074 INFO L93 Difference]: Finished difference Result 5089 states and 9400 transitions. [2020-11-12 03:40:34,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 03:40:34,075 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:40:34,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:40:34,079 INFO L225 Difference]: With dead ends: 5089 [2020-11-12 03:40:34,079 INFO L226 Difference]: Without dead ends: 4819 [2020-11-12 03:40:34,079 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=894, Invalid=2528, Unknown=0, NotChecked=0, Total=3422 [2020-11-12 03:40:34,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4819 states. [2020-11-12 03:40:34,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4819 to 3092. [2020-11-12 03:40:34,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:34,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:40:34,117 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:40:34,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:40:34,117 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:40:34,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:34,117 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:40:34,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:40:34,119 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:40:34,119 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:40:34,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284,280 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:34,320 INFO L429 AbstractCegarLoop]: === Iteration 286 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:40:34,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:40:34,321 INFO L82 PathProgramCache]: Analyzing trace with hash 934937086, now seen corresponding path program 275 times [2020-11-12 03:40:34,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:40:34,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375928504] [2020-11-12 03:40:34,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:40:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:40:35,363 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:35,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375928504] [2020-11-12 03:40:35,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502807956] [2020-11-12 03:40:35,364 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 281 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 281 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:35,468 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2020-11-12 03:40:35,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:40:35,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:40:35,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:40:35,526 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:40:35,612 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:40:35,645 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:35,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:40:35,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-11-12 03:40:35,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962970507] [2020-11-12 03:40:35,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 03:40:35,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:40:35,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 03:40:35,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=756, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:40:35,646 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:37,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:40:37,812 INFO L93 Difference]: Finished difference Result 5064 states and 9325 transitions. [2020-11-12 03:40:37,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-12 03:40:37,814 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:40:37,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:40:37,818 INFO L225 Difference]: With dead ends: 5064 [2020-11-12 03:40:37,819 INFO L226 Difference]: Without dead ends: 4794 [2020-11-12 03:40:37,819 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=979, Invalid=2927, Unknown=0, NotChecked=0, Total=3906 [2020-11-12 03:40:37,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4794 states. [2020-11-12 03:40:37,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4794 to 3092. [2020-11-12 03:40:37,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:37,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:40:37,858 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:40:37,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:40:37,858 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:40:37,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:37,858 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:40:37,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:40:37,861 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:40:37,861 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:40:38,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285,281 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:38,061 INFO L429 AbstractCegarLoop]: === Iteration 287 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:40:38,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:40:38,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1110758628, now seen corresponding path program 276 times [2020-11-12 03:40:38,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:40:38,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191513574] [2020-11-12 03:40:38,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:40:38,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:40:39,040 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:39,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191513574] [2020-11-12 03:40:39,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742659638] [2020-11-12 03:40:39,040 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 282 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 282 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:39,150 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-12 03:40:39,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:40:39,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:40:39,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:40:39,241 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:40:39,271 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:39,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:40:39,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2020-11-12 03:40:39,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751949893] [2020-11-12 03:40:39,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:40:39,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:40:39,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:40:39,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:40:39,272 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:41,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:40:41,288 INFO L93 Difference]: Finished difference Result 5014 states and 9225 transitions. [2020-11-12 03:40:41,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 03:40:41,290 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:40:41,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:40:41,295 INFO L225 Difference]: With dead ends: 5014 [2020-11-12 03:40:41,295 INFO L226 Difference]: Without dead ends: 4744 [2020-11-12 03:40:41,295 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=910, Invalid=2750, Unknown=0, NotChecked=0, Total=3660 [2020-11-12 03:40:41,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4744 states. [2020-11-12 03:40:41,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4744 to 3092. [2020-11-12 03:40:41,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:41,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:40:41,334 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:40:41,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:40:41,335 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:40:41,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:41,335 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:40:41,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:40:41,337 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:40:41,337 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:40:41,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286,282 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:41,538 INFO L429 AbstractCegarLoop]: === Iteration 288 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:40:41,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:40:41,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1429759396, now seen corresponding path program 277 times [2020-11-12 03:40:41,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:40:41,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635972224] [2020-11-12 03:40:41,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:40:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:40:42,574 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:42,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635972224] [2020-11-12 03:40:42,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768315633] [2020-11-12 03:40:42,575 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 283 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 283 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:40:42,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:40:42,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:40:42,728 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:40:42,815 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:40:42,850 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:42,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:40:42,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-11-12 03:40:42,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106601065] [2020-11-12 03:40:42,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 03:40:42,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:40:42,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 03:40:42,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=772, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:40:42,851 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:45,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:40:45,284 INFO L93 Difference]: Finished difference Result 4964 states and 9125 transitions. [2020-11-12 03:40:45,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-11-12 03:40:45,286 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:40:45,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:40:45,292 INFO L225 Difference]: With dead ends: 4964 [2020-11-12 03:40:45,292 INFO L226 Difference]: Without dead ends: 4694 [2020-11-12 03:40:45,292 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1003, Invalid=3157, Unknown=0, NotChecked=0, Total=4160 [2020-11-12 03:40:45,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4694 states. [2020-11-12 03:40:45,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4694 to 3092. [2020-11-12 03:40:45,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:45,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:40:45,332 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:40:45,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:40:45,332 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:40:45,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:45,333 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:40:45,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:40:45,335 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:40:45,335 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:40:45,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 283 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable287 [2020-11-12 03:40:45,537 INFO L429 AbstractCegarLoop]: === Iteration 289 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:40:45,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:40:45,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1428549882, now seen corresponding path program 278 times [2020-11-12 03:40:45,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:40:45,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125806128] [2020-11-12 03:40:45,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:40:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:40:46,485 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:46,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125806128] [2020-11-12 03:40:46,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058599183] [2020-11-12 03:40:46,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 284 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 284 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:46,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:40:46,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:40:46,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:40:46,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:40:46,675 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:40:46,705 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:46,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:40:46,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2020-11-12 03:40:46,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968895304] [2020-11-12 03:40:46,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:40:46,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:40:46,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:40:46,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=719, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:40:46,706 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:48,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:40:48,886 INFO L93 Difference]: Finished difference Result 4914 states and 9025 transitions. [2020-11-12 03:40:48,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 03:40:48,888 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:40:48,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:40:48,893 INFO L225 Difference]: With dead ends: 4914 [2020-11-12 03:40:48,894 INFO L226 Difference]: Without dead ends: 4644 [2020-11-12 03:40:48,894 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=942, Invalid=2964, Unknown=0, NotChecked=0, Total=3906 [2020-11-12 03:40:48,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4644 states. [2020-11-12 03:40:48,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4644 to 3092. [2020-11-12 03:40:48,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:48,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:40:48,934 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:40:48,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:40:48,934 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:40:48,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:48,935 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:40:48,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:40:48,937 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:40:48,937 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:40:49,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 284 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable288 [2020-11-12 03:40:49,138 INFO L429 AbstractCegarLoop]: === Iteration 290 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:40:49,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:40:49,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1228378054, now seen corresponding path program 279 times [2020-11-12 03:40:49,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:40:49,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554928922] [2020-11-12 03:40:49,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:40:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:40:50,140 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:50,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554928922] [2020-11-12 03:40:50,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116987651] [2020-11-12 03:40:50,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 285 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 285 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:50,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-11-12 03:40:50,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:40:50,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:40:50,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:40:50,313 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:40:50,403 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:40:50,453 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:50,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:40:50,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-11-12 03:40:50,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008775773] [2020-11-12 03:40:50,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 03:40:50,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:40:50,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 03:40:50,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:40:50,455 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:53,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:40:53,113 INFO L93 Difference]: Finished difference Result 4864 states and 8925 transitions. [2020-11-12 03:40:53,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-11-12 03:40:53,115 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:40:53,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:40:53,121 INFO L225 Difference]: With dead ends: 4864 [2020-11-12 03:40:53,121 INFO L226 Difference]: Without dead ends: 4594 [2020-11-12 03:40:53,121 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 925 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1043, Invalid=3379, Unknown=0, NotChecked=0, Total=4422 [2020-11-12 03:40:53,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4594 states. [2020-11-12 03:40:53,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4594 to 3092. [2020-11-12 03:40:53,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:53,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:40:53,161 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:40:53,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:40:53,161 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:40:53,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:53,161 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:40:53,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:40:53,164 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:40:53,164 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:40:53,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 285 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable289 [2020-11-12 03:40:53,364 INFO L429 AbstractCegarLoop]: === Iteration 291 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:40:53,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:40:53,365 INFO L82 PathProgramCache]: Analyzing trace with hash 235328600, now seen corresponding path program 280 times [2020-11-12 03:40:53,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:40:53,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163785785] [2020-11-12 03:40:53,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:40:53,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:40:54,314 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:54,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163785785] [2020-11-12 03:40:54,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978966780] [2020-11-12 03:40:54,315 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 286 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 286 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:54,410 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:40:54,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:40:54,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-12 03:40:54,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:40:54,507 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:40:54,535 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:54,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:40:54,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2020-11-12 03:40:54,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665725639] [2020-11-12 03:40:54,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:40:54,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:40:54,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:40:54,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=728, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:40:54,536 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:56,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:40:56,896 INFO L93 Difference]: Finished difference Result 4814 states and 8825 transitions. [2020-11-12 03:40:56,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 03:40:56,898 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:40:56,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:40:56,903 INFO L225 Difference]: With dead ends: 4814 [2020-11-12 03:40:56,904 INFO L226 Difference]: Without dead ends: 4544 [2020-11-12 03:40:56,904 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 907 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=990, Invalid=3170, Unknown=0, NotChecked=0, Total=4160 [2020-11-12 03:40:56,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4544 states. [2020-11-12 03:40:56,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4544 to 3092. [2020-11-12 03:40:56,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:56,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:40:56,945 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:40:56,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:40:56,945 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:40:56,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:40:56,945 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:40:56,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:40:56,947 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:40:56,947 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:40:57,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290,286 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:57,148 INFO L429 AbstractCegarLoop]: === Iteration 292 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:40:57,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:40:57,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1235444632, now seen corresponding path program 281 times [2020-11-12 03:40:57,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:40:57,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377948483] [2020-11-12 03:40:57,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:40:57,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:40:58,157 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:58,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377948483] [2020-11-12 03:40:58,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976895295] [2020-11-12 03:40:58,158 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 287 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 287 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:40:58,258 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2020-11-12 03:40:58,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:40:58,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:40:58,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:40:58,317 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:40:58,410 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:40:58,437 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:40:58,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:40:58,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-11-12 03:40:58,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493424252] [2020-11-12 03:40:58,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 03:40:58,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:40:58,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 03:40:58,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=792, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:40:58,438 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:01,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:41:01,286 INFO L93 Difference]: Finished difference Result 4764 states and 8725 transitions. [2020-11-12 03:41:01,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-11-12 03:41:01,288 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:41:01,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:41:01,293 INFO L225 Difference]: With dead ends: 4764 [2020-11-12 03:41:01,293 INFO L226 Difference]: Without dead ends: 4494 [2020-11-12 03:41:01,293 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1099, Invalid=3593, Unknown=0, NotChecked=0, Total=4692 [2020-11-12 03:41:01,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4494 states. [2020-11-12 03:41:01,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4494 to 3092. [2020-11-12 03:41:01,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:01,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:41:01,350 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:41:01,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:41:01,350 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:41:01,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:01,350 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:41:01,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:41:01,352 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:41:01,353 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:41:01,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291,287 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:01,553 INFO L429 AbstractCegarLoop]: === Iteration 293 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:41:01,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:41:01,554 INFO L82 PathProgramCache]: Analyzing trace with hash 107787574, now seen corresponding path program 282 times [2020-11-12 03:41:01,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:41:01,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096010384] [2020-11-12 03:41:01,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:41:01,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:41:02,446 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:02,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096010384] [2020-11-12 03:41:02,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201587265] [2020-11-12 03:41:02,446 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 288 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 288 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:02,557 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-12 03:41:02,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:41:02,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:41:02,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:41:02,654 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:41:02,681 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:02,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:41:02,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2020-11-12 03:41:02,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374933998] [2020-11-12 03:41:02,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:41:02,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:41:02,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:41:02,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=733, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:41:02,683 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:05,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:41:05,232 INFO L93 Difference]: Finished difference Result 4714 states and 8625 transitions. [2020-11-12 03:41:05,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 03:41:05,234 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:41:05,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:41:05,238 INFO L225 Difference]: With dead ends: 4714 [2020-11-12 03:41:05,238 INFO L226 Difference]: Without dead ends: 4444 [2020-11-12 03:41:05,239 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1003 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1054, Invalid=3368, Unknown=0, NotChecked=0, Total=4422 [2020-11-12 03:41:05,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4444 states. [2020-11-12 03:41:05,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4444 to 3092. [2020-11-12 03:41:05,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:05,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:41:05,276 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:41:05,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:41:05,277 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:41:05,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:05,277 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:41:05,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:41:05,279 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:41:05,279 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:41:05,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292,288 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:05,480 INFO L429 AbstractCegarLoop]: === Iteration 294 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:41:05,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:41:05,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1515672694, now seen corresponding path program 283 times [2020-11-12 03:41:05,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:41:05,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295486793] [2020-11-12 03:41:05,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:41:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:41:06,421 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:06,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295486793] [2020-11-12 03:41:06,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135752838] [2020-11-12 03:41:06,422 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 289 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 289 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:41:06,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:41:06,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:41:06,574 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:41:06,668 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:41:06,696 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:06,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:41:06,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-11-12 03:41:06,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098929322] [2020-11-12 03:41:06,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 03:41:06,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:41:06,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 03:41:06,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:41:06,698 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:09,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:41:09,770 INFO L93 Difference]: Finished difference Result 4664 states and 8525 transitions. [2020-11-12 03:41:09,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-11-12 03:41:09,772 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:41:09,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:41:09,777 INFO L225 Difference]: With dead ends: 4664 [2020-11-12 03:41:09,777 INFO L226 Difference]: Without dead ends: 4394 [2020-11-12 03:41:09,778 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1171, Invalid=3799, Unknown=0, NotChecked=0, Total=4970 [2020-11-12 03:41:09,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4394 states. [2020-11-12 03:41:09,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4394 to 3092. [2020-11-12 03:41:09,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:09,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:41:09,818 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:41:09,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:41:09,819 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:41:09,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:09,819 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:41:09,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:41:09,823 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:41:09,823 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:41:10,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293,289 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:10,037 INFO L429 AbstractCegarLoop]: === Iteration 295 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:41:10,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:41:10,038 INFO L82 PathProgramCache]: Analyzing trace with hash 594441108, now seen corresponding path program 284 times [2020-11-12 03:41:10,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:41:10,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996472199] [2020-11-12 03:41:10,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:41:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:41:10,951 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:10,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996472199] [2020-11-12 03:41:10,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329486033] [2020-11-12 03:41:10,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 290 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 290 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:11,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:41:11,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:41:11,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:41:11,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:41:11,145 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:41:11,171 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:11,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:41:11,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2020-11-12 03:41:11,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75605050] [2020-11-12 03:41:11,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:41:11,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:41:11,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:41:11,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:41:11,172 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:13,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:41:13,868 INFO L93 Difference]: Finished difference Result 4614 states and 8425 transitions. [2020-11-12 03:41:13,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-12 03:41:13,870 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:41:13,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:41:13,875 INFO L225 Difference]: With dead ends: 4614 [2020-11-12 03:41:13,875 INFO L226 Difference]: Without dead ends: 4344 [2020-11-12 03:41:13,876 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1103 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1134, Invalid=3558, Unknown=0, NotChecked=0, Total=4692 [2020-11-12 03:41:13,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4344 states. [2020-11-12 03:41:13,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4344 to 3092. [2020-11-12 03:41:13,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:13,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:41:13,914 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:41:13,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:41:13,914 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:41:13,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:13,914 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:41:13,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:41:13,917 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:41:13,917 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:41:14,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294,290 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:14,118 INFO L429 AbstractCegarLoop]: === Iteration 296 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:41:14,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:41:14,118 INFO L82 PathProgramCache]: Analyzing trace with hash -419749164, now seen corresponding path program 285 times [2020-11-12 03:41:14,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:41:14,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354428388] [2020-11-12 03:41:14,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:41:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:41:15,053 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:15,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354428388] [2020-11-12 03:41:15,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46108046] [2020-11-12 03:41:15,054 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 291 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 291 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:15,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-11-12 03:41:15,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:41:15,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:41:15,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:41:15,223 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:41:15,318 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:41:15,366 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:15,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:41:15,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-11-12 03:41:15,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276750951] [2020-11-12 03:41:15,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 03:41:15,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:41:15,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 03:41:15,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:41:15,367 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:18,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:41:18,733 INFO L93 Difference]: Finished difference Result 4564 states and 8325 transitions. [2020-11-12 03:41:18,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-11-12 03:41:18,735 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:41:18,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:41:18,739 INFO L225 Difference]: With dead ends: 4564 [2020-11-12 03:41:18,739 INFO L226 Difference]: Without dead ends: 4294 [2020-11-12 03:41:18,740 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1234 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1259, Invalid=3997, Unknown=0, NotChecked=0, Total=5256 [2020-11-12 03:41:18,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4294 states. [2020-11-12 03:41:18,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4294 to 3092. [2020-11-12 03:41:18,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:18,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:41:18,779 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:41:18,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:41:18,780 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:41:18,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:18,780 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:41:18,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:41:18,782 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:41:18,782 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:41:18,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295,291 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:18,983 INFO L429 AbstractCegarLoop]: === Iteration 297 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:41:18,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:41:18,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1891963022, now seen corresponding path program 286 times [2020-11-12 03:41:18,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:41:18,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021641966] [2020-11-12 03:41:18,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:41:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:41:19,879 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:19,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021641966] [2020-11-12 03:41:19,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545887492] [2020-11-12 03:41:19,880 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 292 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 292 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:19,976 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:41:19,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:41:19,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-12 03:41:19,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:41:20,076 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:41:20,101 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:20,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:41:20,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2020-11-12 03:41:20,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638778983] [2020-11-12 03:41:20,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:41:20,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:41:20,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:41:20,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:41:20,102 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:22,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:41:22,967 INFO L93 Difference]: Finished difference Result 4514 states and 8225 transitions. [2020-11-12 03:41:22,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-12 03:41:22,969 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:41:22,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:41:22,974 INFO L225 Difference]: With dead ends: 4514 [2020-11-12 03:41:22,974 INFO L226 Difference]: Without dead ends: 4244 [2020-11-12 03:41:22,974 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1207 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1230, Invalid=3740, Unknown=0, NotChecked=0, Total=4970 [2020-11-12 03:41:22,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4244 states. [2020-11-12 03:41:23,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4244 to 3092. [2020-11-12 03:41:23,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:23,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:41:23,038 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:41:23,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:41:23,038 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:41:23,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:23,038 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:41:23,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:41:23,041 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:41:23,041 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:41:23,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296,292 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:23,242 INFO L429 AbstractCegarLoop]: === Iteration 298 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:41:23,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:41:23,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1925033650, now seen corresponding path program 287 times [2020-11-12 03:41:23,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:41:23,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008756009] [2020-11-12 03:41:23,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:41:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:41:24,171 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:24,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008756009] [2020-11-12 03:41:24,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591153354] [2020-11-12 03:41:24,172 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 293 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 293 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:24,277 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2020-11-12 03:41:24,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:41:24,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:41:24,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:41:24,343 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:41:24,438 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:41:24,464 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:24,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:41:24,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-11-12 03:41:24,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207269140] [2020-11-12 03:41:24,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 03:41:24,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:41:24,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 03:41:24,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=792, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:41:24,465 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:28,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:41:28,032 INFO L93 Difference]: Finished difference Result 4464 states and 8125 transitions. [2020-11-12 03:41:28,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-11-12 03:41:28,033 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:41:28,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:41:28,038 INFO L225 Difference]: With dead ends: 4464 [2020-11-12 03:41:28,038 INFO L226 Difference]: Without dead ends: 4194 [2020-11-12 03:41:28,039 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1345 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1363, Invalid=4187, Unknown=0, NotChecked=0, Total=5550 [2020-11-12 03:41:28,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4194 states. [2020-11-12 03:41:28,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4194 to 3092. [2020-11-12 03:41:28,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:28,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:41:28,077 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:41:28,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:41:28,077 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:41:28,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:28,078 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:41:28,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:41:28,080 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:41:28,080 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:41:28,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297,293 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:28,281 INFO L429 AbstractCegarLoop]: === Iteration 299 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:41:28,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:41:28,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1223096112, now seen corresponding path program 288 times [2020-11-12 03:41:28,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:41:28,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37251052] [2020-11-12 03:41:28,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:41:28,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:41:29,212 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:29,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37251052] [2020-11-12 03:41:29,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870720506] [2020-11-12 03:41:29,212 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 294 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 294 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:29,324 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-12 03:41:29,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:41:29,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:41:29,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:41:29,430 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:41:29,453 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:29,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:41:29,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2020-11-12 03:41:29,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848986411] [2020-11-12 03:41:29,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:41:29,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:41:29,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:41:29,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=724, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:41:29,454 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:32,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:41:32,479 INFO L93 Difference]: Finished difference Result 4414 states and 8025 transitions. [2020-11-12 03:41:32,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-11-12 03:41:32,481 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:41:32,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:41:32,486 INFO L225 Difference]: With dead ends: 4414 [2020-11-12 03:41:32,486 INFO L226 Difference]: Without dead ends: 4144 [2020-11-12 03:41:32,487 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1315 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1342, Invalid=3914, Unknown=0, NotChecked=0, Total=5256 [2020-11-12 03:41:32,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4144 states. [2020-11-12 03:41:32,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4144 to 3092. [2020-11-12 03:41:32,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:32,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:41:32,524 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:41:32,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:41:32,524 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:41:32,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:32,524 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:41:32,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:41:32,527 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:41:32,527 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:41:32,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 294 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable298 [2020-11-12 03:41:32,727 INFO L429 AbstractCegarLoop]: === Iteration 300 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:41:32,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:41:32,728 INFO L82 PathProgramCache]: Analyzing trace with hash 65394704, now seen corresponding path program 289 times [2020-11-12 03:41:32,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:41:32,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913669404] [2020-11-12 03:41:32,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:41:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:41:33,622 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:33,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913669404] [2020-11-12 03:41:33,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675338381] [2020-11-12 03:41:33,623 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 295 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 295 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:41:33,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:41:33,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:41:33,779 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:41:33,874 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:41:33,918 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:33,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:41:33,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-11-12 03:41:33,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540131226] [2020-11-12 03:41:33,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 03:41:33,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:41:33,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 03:41:33,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:41:33,919 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:37,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:41:37,813 INFO L93 Difference]: Finished difference Result 4364 states and 7925 transitions. [2020-11-12 03:41:37,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-11-12 03:41:37,815 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:41:37,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:41:37,820 INFO L225 Difference]: With dead ends: 4364 [2020-11-12 03:41:37,820 INFO L226 Difference]: Without dead ends: 4094 [2020-11-12 03:41:37,821 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1460 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1483, Invalid=4369, Unknown=0, NotChecked=0, Total=5852 [2020-11-12 03:41:37,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4094 states. [2020-11-12 03:41:37,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4094 to 3092. [2020-11-12 03:41:37,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:37,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:41:37,875 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:41:37,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:41:37,876 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:41:37,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:37,876 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:41:37,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:41:37,880 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:41:37,880 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:41:38,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299,295 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:38,080 INFO L429 AbstractCegarLoop]: === Iteration 301 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:41:38,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:41:38,081 INFO L82 PathProgramCache]: Analyzing trace with hash -915955794, now seen corresponding path program 290 times [2020-11-12 03:41:38,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:41:38,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557440966] [2020-11-12 03:41:38,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:41:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:41:38,970 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:38,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557440966] [2020-11-12 03:41:38,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147642166] [2020-11-12 03:41:38,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 296 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 296 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:39,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:41:39,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:41:39,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:41:39,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:41:39,173 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:41:39,196 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:39,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:41:39,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2020-11-12 03:41:39,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049900821] [2020-11-12 03:41:39,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:41:39,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:41:39,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:41:39,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=713, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:41:39,197 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:42,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:41:42,394 INFO L93 Difference]: Finished difference Result 4314 states and 7825 transitions. [2020-11-12 03:41:42,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-11-12 03:41:42,396 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:41:42,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:41:42,400 INFO L225 Difference]: With dead ends: 4314 [2020-11-12 03:41:42,400 INFO L226 Difference]: Without dead ends: 4044 [2020-11-12 03:41:42,401 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1427 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1470, Invalid=4080, Unknown=0, NotChecked=0, Total=5550 [2020-11-12 03:41:42,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4044 states. [2020-11-12 03:41:42,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4044 to 3092. [2020-11-12 03:41:42,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:42,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:41:42,436 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:41:42,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:41:42,436 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:41:42,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:42,436 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:41:42,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:41:42,439 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:41:42,439 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:41:42,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 296 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable300 [2020-11-12 03:41:42,639 INFO L429 AbstractCegarLoop]: === Iteration 302 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:41:42,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:41:42,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1580040466, now seen corresponding path program 291 times [2020-11-12 03:41:42,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:41:42,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821256196] [2020-11-12 03:41:42,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:41:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:41:43,524 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:43,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821256196] [2020-11-12 03:41:43,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930679204] [2020-11-12 03:41:43,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 297 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 297 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:43,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-11-12 03:41:43,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:41:43,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:41:43,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:41:43,715 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:41:43,811 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:41:43,833 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:43,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:41:43,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-11-12 03:41:43,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059349137] [2020-11-12 03:41:43,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 03:41:43,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:41:43,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 03:41:43,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=772, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:41:43,835 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:47,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:41:47,934 INFO L93 Difference]: Finished difference Result 4264 states and 7725 transitions. [2020-11-12 03:41:47,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-11-12 03:41:47,936 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:41:47,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:41:47,941 INFO L225 Difference]: With dead ends: 4264 [2020-11-12 03:41:47,941 INFO L226 Difference]: Without dead ends: 3994 [2020-11-12 03:41:47,942 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1579 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1619, Invalid=4543, Unknown=0, NotChecked=0, Total=6162 [2020-11-12 03:41:47,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2020-11-12 03:41:47,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 3092. [2020-11-12 03:41:47,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:47,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:41:47,978 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:41:47,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:41:47,979 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:41:47,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:47,979 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:41:47,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:41:47,981 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:41:47,981 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:41:48,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 297 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable301 [2020-11-12 03:41:48,182 INFO L429 AbstractCegarLoop]: === Iteration 303 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:41:48,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:41:48,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1281518580, now seen corresponding path program 292 times [2020-11-12 03:41:48,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:41:48,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485029127] [2020-11-12 03:41:48,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:41:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:41:49,053 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:49,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485029127] [2020-11-12 03:41:49,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517773456] [2020-11-12 03:41:49,054 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 298 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 298 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:49,151 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:41:49,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:41:49,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-12 03:41:49,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:41:49,259 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:41:49,279 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:49,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:41:49,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2020-11-12 03:41:49,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116843320] [2020-11-12 03:41:49,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:41:49,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:41:49,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:41:49,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=698, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:41:49,281 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:52,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:41:52,727 INFO L93 Difference]: Finished difference Result 4214 states and 7625 transitions. [2020-11-12 03:41:52,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-11-12 03:41:52,729 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:41:52,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:41:52,734 INFO L225 Difference]: With dead ends: 4214 [2020-11-12 03:41:52,734 INFO L226 Difference]: Without dead ends: 3944 [2020-11-12 03:41:52,734 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1614, Invalid=4238, Unknown=0, NotChecked=0, Total=5852 [2020-11-12 03:41:52,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3944 states. [2020-11-12 03:41:52,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3944 to 3092. [2020-11-12 03:41:52,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.7998678996036988) internal successors, (5450), 3091 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:52,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5450 transitions. [2020-11-12 03:41:52,772 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5450 transitions. Word has length 146 [2020-11-12 03:41:52,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:41:52,772 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5450 transitions. [2020-11-12 03:41:52,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:52,772 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5450 transitions. [2020-11-12 03:41:52,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:41:52,775 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:41:52,775 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:41:52,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 298 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable302 [2020-11-12 03:41:52,975 INFO L429 AbstractCegarLoop]: === Iteration 304 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:41:52,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:41:52,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1392149324, now seen corresponding path program 293 times [2020-11-12 03:41:52,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:41:52,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731976132] [2020-11-12 03:41:52,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:41:52,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:41:53,923 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:53,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731976132] [2020-11-12 03:41:53,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052828687] [2020-11-12 03:41:53,923 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 299 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 299 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:54,026 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2020-11-12 03:41:54,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:41:54,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:41:54,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:41:54,095 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:41:54,192 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:41:54,213 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:54,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:41:54,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-11-12 03:41:54,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905031976] [2020-11-12 03:41:54,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 03:41:54,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:41:54,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 03:41:54,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=756, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:41:54,214 INFO L87 Difference]: Start difference. First operand 3092 states and 5450 transitions. Second operand has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:58,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:41:58,742 INFO L93 Difference]: Finished difference Result 4613 states and 8370 transitions. [2020-11-12 03:41:58,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-11-12 03:41:58,744 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:41:58,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:41:58,747 INFO L225 Difference]: With dead ends: 4613 [2020-11-12 03:41:58,747 INFO L226 Difference]: Without dead ends: 4104 [2020-11-12 03:41:58,748 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1801 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1794, Invalid=5012, Unknown=0, NotChecked=0, Total=6806 [2020-11-12 03:41:58,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4104 states. [2020-11-12 03:41:58,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4104 to 3112. [2020-11-12 03:41:58,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3112 states, 3048 states have (on average 1.8028215223097113) internal successors, (5495), 3111 states have internal predecessors, (5495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:58,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3112 states to 3112 states and 5495 transitions. [2020-11-12 03:41:58,786 INFO L78 Accepts]: Start accepts. Automaton has 3112 states and 5495 transitions. Word has length 146 [2020-11-12 03:41:58,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:41:58,786 INFO L481 AbstractCegarLoop]: Abstraction has 3112 states and 5495 transitions. [2020-11-12 03:41:58,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:41:58,787 INFO L276 IsEmpty]: Start isEmpty. Operand 3112 states and 5495 transitions. [2020-11-12 03:41:58,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:41:58,789 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:41:58,789 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:41:58,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303,299 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:58,990 INFO L429 AbstractCegarLoop]: === Iteration 305 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:41:58,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:41:58,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1768727808, now seen corresponding path program 294 times [2020-11-12 03:41:58,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:41:58,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999277355] [2020-11-12 03:41:58,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:41:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:41:59,887 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:41:59,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999277355] [2020-11-12 03:41:59,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803446421] [2020-11-12 03:41:59,888 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 300 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 300 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:41:59,999 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-12 03:41:59,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:42:00,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:42:00,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:42:00,108 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:42:00,129 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:00,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:42:00,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2020-11-12 03:42:00,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908309100] [2020-11-12 03:42:00,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 03:42:00,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:42:00,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 03:42:00,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=679, Unknown=0, NotChecked=0, Total=870 [2020-11-12 03:42:00,130 INFO L87 Difference]: Start difference. First operand 3112 states and 5495 transitions. Second operand has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:03,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:42:03,752 INFO L93 Difference]: Finished difference Result 5291 states and 9079 transitions. [2020-11-12 03:42:03,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-11-12 03:42:03,754 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:42:03,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:42:03,759 INFO L225 Difference]: With dead ends: 5291 [2020-11-12 03:42:03,759 INFO L226 Difference]: Without dead ends: 5006 [2020-11-12 03:42:03,759 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1662 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1775, Invalid=4387, Unknown=0, NotChecked=0, Total=6162 [2020-11-12 03:42:03,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5006 states. [2020-11-12 03:42:03,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5006 to 3197. [2020-11-12 03:42:03,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3197 states, 3133 states have (on average 1.8171082030003192) internal successors, (5693), 3196 states have internal predecessors, (5693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:03,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 5693 transitions. [2020-11-12 03:42:03,801 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 5693 transitions. Word has length 146 [2020-11-12 03:42:03,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:42:03,801 INFO L481 AbstractCegarLoop]: Abstraction has 3197 states and 5693 transitions. [2020-11-12 03:42:03,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:03,801 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 5693 transitions. [2020-11-12 03:42:03,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 03:42:03,804 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:42:03,804 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:42:04,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 300 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable304 [2020-11-12 03:42:04,005 INFO L429 AbstractCegarLoop]: === Iteration 306 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:42:04,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:42:04,005 INFO L82 PathProgramCache]: Analyzing trace with hash -928750616, now seen corresponding path program 295 times [2020-11-12 03:42:04,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:42:04,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993275233] [2020-11-12 03:42:04,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:42:04,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:42:04,917 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:04,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993275233] [2020-11-12 03:42:04,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653179574] [2020-11-12 03:42:04,918 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 301 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 301 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:42:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:42:05,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 03:42:05,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:42:05,081 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:42:05,152 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:42:05,173 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:05,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:42:05,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-11-12 03:42:05,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348922216] [2020-11-12 03:42:05,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 03:42:05,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:42:05,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 03:42:05,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=736, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:42:05,174 INFO L87 Difference]: Start difference. First operand 3197 states and 5693 transitions. Second operand has 31 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:09,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:42:09,840 INFO L93 Difference]: Finished difference Result 4706 states and 8515 transitions. [2020-11-12 03:42:09,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-11-12 03:42:09,843 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 03:42:09,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:42:09,847 INFO L225 Difference]: With dead ends: 4706 [2020-11-12 03:42:09,848 INFO L226 Difference]: Without dead ends: 4134 [2020-11-12 03:42:09,848 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1969 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1989, Invalid=5321, Unknown=0, NotChecked=0, Total=7310 [2020-11-12 03:42:09,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4134 states. [2020-11-12 03:42:09,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4134 to 3092. [2020-11-12 03:42:09,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3028 states have (on average 1.8114266842800528) internal successors, (5485), 3091 states have internal predecessors, (5485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:09,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5485 transitions. [2020-11-12 03:42:09,892 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5485 transitions. Word has length 146 [2020-11-12 03:42:09,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:42:09,892 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 5485 transitions. [2020-11-12 03:42:09,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:09,892 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5485 transitions. [2020-11-12 03:42:09,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 03:42:09,895 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:42:09,895 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:42:10,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305,301 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:42:10,096 INFO L429 AbstractCegarLoop]: === Iteration 307 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:42:10,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:42:10,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1599052647, now seen corresponding path program 296 times [2020-11-12 03:42:10,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:42:10,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181468045] [2020-11-12 03:42:10,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:42:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:42:11,324 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:11,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181468045] [2020-11-12 03:42:11,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082601443] [2020-11-12 03:42:11,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 302 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 302 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:42:11,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:42:11,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:42:11,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:42:11,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:42:11,519 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:42:11,555 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:11,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:42:11,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2020-11-12 03:42:11,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484973395] [2020-11-12 03:42:11,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 03:42:11,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:42:11,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 03:42:11,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=725, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:42:11,556 INFO L87 Difference]: Start difference. First operand 3092 states and 5485 transitions. Second operand has 31 states, 31 states have (on average 4.935483870967742) internal successors, (153), 31 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:13,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:42:13,696 INFO L93 Difference]: Finished difference Result 4664 states and 8560 transitions. [2020-11-12 03:42:13,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-12 03:42:13,699 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.935483870967742) internal successors, (153), 31 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 03:42:13,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:42:13,704 INFO L225 Difference]: With dead ends: 4664 [2020-11-12 03:42:13,704 INFO L226 Difference]: Without dead ends: 4394 [2020-11-12 03:42:13,704 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=976, Invalid=2684, Unknown=0, NotChecked=0, Total=3660 [2020-11-12 03:42:13,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4394 states. [2020-11-12 03:42:13,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4394 to 3107. [2020-11-12 03:42:13,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3107 states, 3043 states have (on average 1.807426881367072) internal successors, (5500), 3106 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:13,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 5500 transitions. [2020-11-12 03:42:13,763 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 5500 transitions. Word has length 151 [2020-11-12 03:42:13,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:42:13,763 INFO L481 AbstractCegarLoop]: Abstraction has 3107 states and 5500 transitions. [2020-11-12 03:42:13,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.935483870967742) internal successors, (153), 31 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:13,763 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 5500 transitions. [2020-11-12 03:42:13,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 03:42:13,766 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:42:13,766 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:42:13,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306,302 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:42:13,966 INFO L429 AbstractCegarLoop]: === Iteration 308 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:42:13,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:42:13,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1336101927, now seen corresponding path program 297 times [2020-11-12 03:42:13,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:42:13,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724489716] [2020-11-12 03:42:13,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:42:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:42:15,223 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:15,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724489716] [2020-11-12 03:42:15,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319039579] [2020-11-12 03:42:15,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 303 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 303 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:42:15,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2020-11-12 03:42:15,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:42:15,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:42:15,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:42:15,401 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:42:15,499 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:42:15,533 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:15,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:42:15,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 32 [2020-11-12 03:42:15,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440907618] [2020-11-12 03:42:15,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-11-12 03:42:15,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:42:15,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-12 03:42:15,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=795, Unknown=0, NotChecked=0, Total=992 [2020-11-12 03:42:15,535 INFO L87 Difference]: Start difference. First operand 3107 states and 5500 transitions. Second operand has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:17,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:42:17,825 INFO L93 Difference]: Finished difference Result 5224 states and 9655 transitions. [2020-11-12 03:42:17,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-12 03:42:17,827 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 03:42:17,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:42:17,832 INFO L225 Difference]: With dead ends: 5224 [2020-11-12 03:42:17,832 INFO L226 Difference]: Without dead ends: 4954 [2020-11-12 03:42:17,833 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1040, Invalid=2992, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 03:42:17,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4954 states. [2020-11-12 03:42:17,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4954 to 3107. [2020-11-12 03:42:17,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3107 states, 3043 states have (on average 1.807426881367072) internal successors, (5500), 3106 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:17,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 5500 transitions. [2020-11-12 03:42:17,873 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 5500 transitions. Word has length 151 [2020-11-12 03:42:17,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:42:17,873 INFO L481 AbstractCegarLoop]: Abstraction has 3107 states and 5500 transitions. [2020-11-12 03:42:17,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:17,873 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 5500 transitions. [2020-11-12 03:42:17,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 03:42:17,876 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:42:17,876 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:42:18,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307,303 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:42:18,077 INFO L429 AbstractCegarLoop]: === Iteration 309 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:42:18,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:42:18,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1466200201, now seen corresponding path program 298 times [2020-11-12 03:42:18,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:42:18,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060791459] [2020-11-12 03:42:18,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:42:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:42:19,238 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:19,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060791459] [2020-11-12 03:42:19,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113150331] [2020-11-12 03:42:19,239 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 304 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 304 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:42:19,341 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 03:42:19,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:42:19,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-12 03:42:19,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:42:19,438 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:42:19,472 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:19,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:42:19,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2020-11-12 03:42:19,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407563702] [2020-11-12 03:42:19,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 03:42:19,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:42:19,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 03:42:19,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=745, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:42:19,474 INFO L87 Difference]: Start difference. First operand 3107 states and 5500 transitions. Second operand has 31 states, 31 states have (on average 4.935483870967742) internal successors, (153), 31 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:21,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:42:21,778 INFO L93 Difference]: Finished difference Result 5214 states and 9610 transitions. [2020-11-12 03:42:21,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 03:42:21,780 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.935483870967742) internal successors, (153), 31 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 03:42:21,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:42:21,786 INFO L225 Difference]: With dead ends: 5214 [2020-11-12 03:42:21,786 INFO L226 Difference]: Without dead ends: 4944 [2020-11-12 03:42:21,786 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1032, Invalid=3000, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 03:42:21,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4944 states. [2020-11-12 03:42:21,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4944 to 3107. [2020-11-12 03:42:21,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3107 states, 3043 states have (on average 1.807426881367072) internal successors, (5500), 3106 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:21,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 5500 transitions. [2020-11-12 03:42:21,827 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 5500 transitions. Word has length 151 [2020-11-12 03:42:21,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:42:21,827 INFO L481 AbstractCegarLoop]: Abstraction has 3107 states and 5500 transitions. [2020-11-12 03:42:21,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.935483870967742) internal successors, (153), 31 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:21,827 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 5500 transitions. [2020-11-12 03:42:21,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 03:42:21,830 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:42:21,830 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:42:22,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 304 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable308 [2020-11-12 03:42:22,030 INFO L429 AbstractCegarLoop]: === Iteration 310 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:42:22,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:42:22,031 INFO L82 PathProgramCache]: Analyzing trace with hash -314184009, now seen corresponding path program 299 times [2020-11-12 03:42:22,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:42:22,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737780536] [2020-11-12 03:42:22,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:42:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:42:23,237 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:23,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737780536] [2020-11-12 03:42:23,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212444440] [2020-11-12 03:42:23,237 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 305 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 305 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:42:23,344 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2020-11-12 03:42:23,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:42:23,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:42:23,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:42:23,409 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:42:23,517 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:42:23,550 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:23,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:42:23,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 32 [2020-11-12 03:42:23,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135447211] [2020-11-12 03:42:23,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-11-12 03:42:23,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:42:23,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-12 03:42:23,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=814, Unknown=0, NotChecked=0, Total=992 [2020-11-12 03:42:23,551 INFO L87 Difference]: Start difference. First operand 3107 states and 5500 transitions. Second operand has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:26,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:42:26,091 INFO L93 Difference]: Finished difference Result 5189 states and 9535 transitions. [2020-11-12 03:42:26,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-11-12 03:42:26,093 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 03:42:26,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:42:26,099 INFO L225 Difference]: With dead ends: 5189 [2020-11-12 03:42:26,099 INFO L226 Difference]: Without dead ends: 4919 [2020-11-12 03:42:26,100 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1055, Invalid=3235, Unknown=0, NotChecked=0, Total=4290 [2020-11-12 03:42:26,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4919 states. [2020-11-12 03:42:26,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4919 to 3107. [2020-11-12 03:42:26,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3107 states, 3043 states have (on average 1.807426881367072) internal successors, (5500), 3106 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:26,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 5500 transitions. [2020-11-12 03:42:26,141 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 5500 transitions. Word has length 151 [2020-11-12 03:42:26,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:42:26,141 INFO L481 AbstractCegarLoop]: Abstraction has 3107 states and 5500 transitions. [2020-11-12 03:42:26,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:26,141 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 5500 transitions. [2020-11-12 03:42:26,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 03:42:26,143 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:42:26,144 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:42:26,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 305 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable309 [2020-11-12 03:42:26,344 INFO L429 AbstractCegarLoop]: === Iteration 311 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:42:26,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:42:26,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1935087573, now seen corresponding path program 300 times [2020-11-12 03:42:26,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:42:26,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492603022] [2020-11-12 03:42:26,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:42:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:42:27,468 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:27,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492603022] [2020-11-12 03:42:27,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412205452] [2020-11-12 03:42:27,469 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 306 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 306 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:42:27,580 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2020-11-12 03:42:27,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:42:27,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:42:27,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:42:27,679 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:42:27,733 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:27,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:42:27,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2020-11-12 03:42:27,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248191077] [2020-11-12 03:42:27,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 03:42:27,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:42:27,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 03:42:27,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=761, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:42:27,734 INFO L87 Difference]: Start difference. First operand 3107 states and 5500 transitions. Second operand has 31 states, 31 states have (on average 4.935483870967742) internal successors, (153), 31 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:30,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:42:30,267 INFO L93 Difference]: Finished difference Result 5164 states and 9460 transitions. [2020-11-12 03:42:30,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 03:42:30,269 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.935483870967742) internal successors, (153), 31 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 03:42:30,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:42:30,275 INFO L225 Difference]: With dead ends: 5164 [2020-11-12 03:42:30,275 INFO L226 Difference]: Without dead ends: 4894 [2020-11-12 03:42:30,276 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 943 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1061, Invalid=3229, Unknown=0, NotChecked=0, Total=4290 [2020-11-12 03:42:30,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4894 states. [2020-11-12 03:42:30,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4894 to 3107. [2020-11-12 03:42:30,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3107 states, 3043 states have (on average 1.807426881367072) internal successors, (5500), 3106 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:30,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 5500 transitions. [2020-11-12 03:42:30,317 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 5500 transitions. Word has length 151 [2020-11-12 03:42:30,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:42:30,317 INFO L481 AbstractCegarLoop]: Abstraction has 3107 states and 5500 transitions. [2020-11-12 03:42:30,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.935483870967742) internal successors, (153), 31 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:30,317 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 5500 transitions. [2020-11-12 03:42:30,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 03:42:30,319 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:42:30,319 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:42:30,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 306 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable310 [2020-11-12 03:42:30,520 INFO L429 AbstractCegarLoop]: === Iteration 312 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:42:30,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:42:30,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1616086805, now seen corresponding path program 301 times [2020-11-12 03:42:30,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:42:30,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367361591] [2020-11-12 03:42:30,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:42:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:42:31,731 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:31,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367361591] [2020-11-12 03:42:31,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437903503] [2020-11-12 03:42:31,732 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 307 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 307 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:42:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:42:31,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:42:31,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:42:31,895 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:42:32,000 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:42:32,033 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:32,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:42:32,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 32 [2020-11-12 03:42:32,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425619868] [2020-11-12 03:42:32,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-11-12 03:42:32,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:42:32,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-12 03:42:32,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2020-11-12 03:42:32,034 INFO L87 Difference]: Start difference. First operand 3107 states and 5500 transitions. Second operand has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:34,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:42:34,822 INFO L93 Difference]: Finished difference Result 5139 states and 9385 transitions. [2020-11-12 03:42:34,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-11-12 03:42:34,824 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 03:42:34,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:42:34,829 INFO L225 Difference]: With dead ends: 5139 [2020-11-12 03:42:34,829 INFO L226 Difference]: Without dead ends: 4869 [2020-11-12 03:42:34,830 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 966 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1086, Invalid=3470, Unknown=0, NotChecked=0, Total=4556 [2020-11-12 03:42:34,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4869 states. [2020-11-12 03:42:34,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4869 to 3107. [2020-11-12 03:42:34,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3107 states, 3043 states have (on average 1.807426881367072) internal successors, (5500), 3106 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:34,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 5500 transitions. [2020-11-12 03:42:34,871 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 5500 transitions. Word has length 151 [2020-11-12 03:42:34,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:42:34,871 INFO L481 AbstractCegarLoop]: Abstraction has 3107 states and 5500 transitions. [2020-11-12 03:42:34,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:34,872 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 5500 transitions. [2020-11-12 03:42:34,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 03:42:34,874 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:42:34,874 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:42:35,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 307 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable311 [2020-11-12 03:42:35,075 INFO L429 AbstractCegarLoop]: === Iteration 313 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:42:35,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:42:35,076 INFO L82 PathProgramCache]: Analyzing trace with hash 179428787, now seen corresponding path program 302 times [2020-11-12 03:42:35,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:42:35,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221310177] [2020-11-12 03:42:35,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:42:35,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:42:36,197 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:36,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221310177] [2020-11-12 03:42:36,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489058133] [2020-11-12 03:42:36,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 308 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 308 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:42:36,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 03:42:36,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:42:36,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:42:36,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:42:36,399 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:42:36,429 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:36,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:42:36,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2020-11-12 03:42:36,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788000555] [2020-11-12 03:42:36,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 03:42:36,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:42:36,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 03:42:36,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=773, Unknown=0, NotChecked=0, Total=930 [2020-11-12 03:42:36,430 INFO L87 Difference]: Start difference. First operand 3107 states and 5500 transitions. Second operand has 31 states, 31 states have (on average 4.935483870967742) internal successors, (153), 31 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:39,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:42:39,098 INFO L93 Difference]: Finished difference Result 5114 states and 9310 transitions. [2020-11-12 03:42:39,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 03:42:39,101 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.935483870967742) internal successors, (153), 31 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 03:42:39,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:42:39,107 INFO L225 Difference]: With dead ends: 5114 [2020-11-12 03:42:39,107 INFO L226 Difference]: Without dead ends: 4844 [2020-11-12 03:42:39,108 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1106, Invalid=3450, Unknown=0, NotChecked=0, Total=4556 [2020-11-12 03:42:39,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4844 states. [2020-11-12 03:42:39,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4844 to 3107. [2020-11-12 03:42:39,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3107 states, 3043 states have (on average 1.807426881367072) internal successors, (5500), 3106 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:39,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 5500 transitions. [2020-11-12 03:42:39,164 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 5500 transitions. Word has length 151 [2020-11-12 03:42:39,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:42:39,164 INFO L481 AbstractCegarLoop]: Abstraction has 3107 states and 5500 transitions. [2020-11-12 03:42:39,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.935483870967742) internal successors, (153), 31 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 03:42:39,164 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 5500 transitions. [2020-11-12 03:42:39,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 03:42:39,167 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:42:39,167 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:42:39,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 308 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable312 [2020-11-12 03:42:39,368 INFO L429 AbstractCegarLoop]: === Iteration 314 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:42:39,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:42:39,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1817468147, now seen corresponding path program 303 times [2020-11-12 03:42:39,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:42:39,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375326238] [2020-11-12 03:42:39,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:42:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:42:40,525 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:40,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375326238] [2020-11-12 03:42:40,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809819569] [2020-11-12 03:42:40,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 309 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 309 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 03:42:40,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2020-11-12 03:42:40,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 03:42:40,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 03:42:40,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 03:42:40,701 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 03:42:40,803 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 03:42:40,834 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:42:40,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 03:42:40,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 32 [2020-11-12 03:42:40,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961210649] [2020-11-12 03:42:40,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-11-12 03:42:40,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:42:40,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-12 03:42:40,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=840, Unknown=0, NotChecked=0, Total=992 [2020-11-12 03:42:40,835 INFO L87 Difference]: Start difference. First operand 3107 states and 5500 transitions. Second operand has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2020-11-12 03:42:42,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-12 03:42:42,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 309 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable313 [2020-11-12 03:42:42,816 WARN L546 AbstractCegarLoop]: Verification canceled [2020-11-12 03:42:42,822 WARN L250 ceAbstractionStarter]: Timeout [2020-11-12 03:42:42,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 03:42:42 BasicIcfg [2020-11-12 03:42:42,823 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 03:42:42,825 INFO L168 Benchmark]: Toolchain (without parser) took 808332.72 ms. Allocated memory was 306.2 MB in the beginning and 641.7 MB in the end (delta: 335.5 MB). Free memory was 281.9 MB in the beginning and 605.9 MB in the end (delta: -324.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.0 GB. [2020-11-12 03:42:42,825 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 306.2 MB. Free memory is still 276.5 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 03:42:42,825 INFO L168 Benchmark]: CACSL2BoogieTranslator took 736.34 ms. Allocated memory is still 306.2 MB. Free memory was 281.2 MB in the beginning and 252.4 MB in the end (delta: 28.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2020-11-12 03:42:42,826 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.04 ms. Allocated memory is still 306.2 MB. Free memory was 252.4 MB in the beginning and 250.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 03:42:42,826 INFO L168 Benchmark]: Boogie Preprocessor took 32.81 ms. Allocated memory is still 306.2 MB. Free memory was 250.5 MB in the beginning and 249.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 03:42:42,826 INFO L168 Benchmark]: RCFGBuilder took 630.21 ms. Allocated memory is still 306.2 MB. Free memory was 249.0 MB in the beginning and 270.1 MB in the end (delta: -21.1 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.0 GB. [2020-11-12 03:42:42,827 INFO L168 Benchmark]: TraceAbstraction took 806870.23 ms. Allocated memory was 306.2 MB in the beginning and 641.7 MB in the end (delta: 335.5 MB). Free memory was 270.1 MB in the beginning and 605.9 MB in the end (delta: -335.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 16.0 GB. [2020-11-12 03:42:42,829 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 306.2 MB. Free memory is still 276.5 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 736.34 ms. Allocated memory is still 306.2 MB. Free memory was 281.2 MB in the beginning and 252.4 MB in the end (delta: 28.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 51.04 ms. Allocated memory is still 306.2 MB. Free memory was 252.4 MB in the beginning and 250.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 32.81 ms. Allocated memory is still 306.2 MB. Free memory was 250.5 MB in the beginning and 249.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 630.21 ms. Allocated memory is still 306.2 MB. Free memory was 249.0 MB in the beginning and 270.1 MB in the end (delta: -21.1 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 806870.23 ms. Allocated memory was 306.2 MB in the beginning and 641.7 MB in the end (delta: 335.5 MB). Free memory was 270.1 MB in the beginning and 605.9 MB in the end (delta: -335.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 685]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 685). Cancelled while BasicCegarLoop was constructing difference of abstraction (3107states) and FLOYD_HOARE automaton (currently 28 states, 32 states before enhancement),while ReachableStatesComputation was computing reachable states (1197 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 806.7s, OverallIterations: 314, TraceHistogramMax: 13, AutomataDifference: 500.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, HoareTripleCheckerStatistics: 25840 SDtfs, 252520 SDslu, 267344 SDs, 0 SdLazy, 52390 SolverSat, 44112 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 71.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48871 GetRequests, 33257 SyntacticMatches, 286 SemanticMatches, 15328 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202077 ImplicationChecksByTransitivity, 529.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3197occurred in iteration=305, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 12.1s AutomataMinimizationTime, 313 MinimizatonAttempts, 331222 StatesRemovedByMinimization, 313 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5.4s SsaConstructionTime, 15.3s SatisfiabilityAnalysisTime, 190.1s InterpolantComputationTime, 67370 NumberOfCodeBlocks, 67370 NumberOfCodeBlocksAsserted, 1967 NumberOfCheckSat, 66748 ConstructedInterpolants, 0 QuantifiedInterpolants, 33848944 SizeOfPredicates, 6097 NumberOfNonLiveVariables, 68024 ConjunctsInSsa, 7068 ConjunctsInUnsatCore, 622 InterpolantComputations, 6 PerfectInterpolantSequences, 0/186076 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown