/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread/singleton.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 21:30:44,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 21:30:44,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 21:30:44,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 21:30:44,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 21:30:44,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 21:30:44,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 21:30:44,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 21:30:44,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 21:30:44,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 21:30:44,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 21:30:44,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 21:30:44,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 21:30:44,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 21:30:44,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 21:30:44,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 21:30:44,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 21:30:44,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 21:30:44,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 21:30:44,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 21:30:44,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 21:30:44,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 21:30:44,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 21:30:44,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 21:30:44,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-21 21:30:44,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 21:30:44,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 21:30:44,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 21:30:44,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 21:30:44,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 21:30:44,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 21:30:44,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 21:30:44,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 21:30:44,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 21:30:44,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 21:30:44,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 21:30:44,714 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-21 21:30:44,751 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 21:30:44,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 21:30:44,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 21:30:44,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 21:30:44,753 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 21:30:44,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 21:30:44,754 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 21:30:44,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 21:30:44,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 21:30:44,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 21:30:44,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 21:30:44,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 21:30:44,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 21:30:44,756 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 21:30:44,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 21:30:44,756 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 21:30:44,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 21:30:44,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 21:30:44,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 21:30:44,757 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 21:30:44,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 21:30:44,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 21:30:44,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 21:30:44,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-21 21:30:44,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 21:30:44,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 21:30:44,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 21:30:44,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 21:30:44,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-21 21:30:44,759 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-21 21:30:45,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 21:30:45,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 21:30:45,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 21:30:45,081 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 21:30:45,081 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 21:30:45,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/singleton.i [2020-10-21 21:30:45,154 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e77a9f62d/d60ce9aa60ac41d7a5e6f3766f9cb463/FLAG7049ca9d1 [2020-10-21 21:30:45,716 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 21:30:45,717 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/singleton.i [2020-10-21 21:30:45,741 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e77a9f62d/d60ce9aa60ac41d7a5e6f3766f9cb463/FLAG7049ca9d1 [2020-10-21 21:30:45,977 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e77a9f62d/d60ce9aa60ac41d7a5e6f3766f9cb463 [2020-10-21 21:30:45,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 21:30:45,992 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 21:30:45,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 21:30:45,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 21:30:45,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 21:30:45,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 09:30:45" (1/1) ... [2020-10-21 21:30:46,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33960956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:30:46, skipping insertion in model container [2020-10-21 21:30:46,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 09:30:45" (1/1) ... [2020-10-21 21:30:46,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 21:30:46,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 21:30:46,429 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-21 21:30:46,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 21:30:46,678 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 21:30:46,696 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-21 21:30:46,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 21:30:46,904 INFO L208 MainTranslator]: Completed translation [2020-10-21 21:30:46,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:30:46 WrapperNode [2020-10-21 21:30:46,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 21:30:46,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 21:30:46,906 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 21:30:46,906 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 21:30:46,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:30:46" (1/1) ... [2020-10-21 21:30:46,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:30:46" (1/1) ... [2020-10-21 21:30:46,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 21:30:46,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 21:30:46,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 21:30:46,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 21:30:46,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:30:46" (1/1) ... [2020-10-21 21:30:46,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:30:46" (1/1) ... [2020-10-21 21:30:46,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:30:46" (1/1) ... [2020-10-21 21:30:46,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:30:46" (1/1) ... [2020-10-21 21:30:46,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:30:46" (1/1) ... [2020-10-21 21:30:46,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:30:46" (1/1) ... [2020-10-21 21:30:46,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:30:46" (1/1) ... [2020-10-21 21:30:46,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 21:30:46,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 21:30:46,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 21:30:46,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 21:30:46,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:30:46" (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 [2020-10-21 21:30:47,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-21 21:30:47,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 21:30:47,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 21:30:47,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-21 21:30:47,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-21 21:30:47,065 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2020-10-21 21:30:47,065 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2020-10-21 21:30:47,065 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-10-21 21:30:47,065 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-10-21 21:30:47,065 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-10-21 21:30:47,066 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-10-21 21:30:47,066 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2020-10-21 21:30:47,066 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2020-10-21 21:30:47,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 21:30:47,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-21 21:30:47,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 21:30:47,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 21:30:47,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 21:30:47,069 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-21 21:30:47,525 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 21:30:47,526 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-21 21:30:47,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 09:30:47 BoogieIcfgContainer [2020-10-21 21:30:47,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 21:30:47,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 21:30:47,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 21:30:47,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 21:30:47,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 09:30:45" (1/3) ... [2020-10-21 21:30:47,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ad4734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 09:30:47, skipping insertion in model container [2020-10-21 21:30:47,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:30:46" (2/3) ... [2020-10-21 21:30:47,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ad4734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 09:30:47, skipping insertion in model container [2020-10-21 21:30:47,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 09:30:47" (3/3) ... [2020-10-21 21:30:47,536 INFO L111 eAbstractionObserver]: Analyzing ICFG singleton.i [2020-10-21 21:30:47,547 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 21:30:47,547 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-21 21:30:47,555 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-21 21:30:47,556 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 21:30:47,591 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,591 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,592 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork4_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,592 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork4_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,592 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,592 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,593 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,593 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,593 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,593 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,594 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,594 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,595 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,595 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,595 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,595 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,596 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,596 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,596 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,596 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,597 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,597 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,597 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,598 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,598 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,598 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,599 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,599 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,599 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,599 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,600 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,600 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,600 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,600 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,600 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,601 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,601 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,601 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,601 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,602 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,602 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,602 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,602 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,602 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,603 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,603 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,603 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,603 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,604 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,604 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,604 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,604 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,604 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,605 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,605 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,605 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,605 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,605 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,605 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,606 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,606 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,606 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,606 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,606 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,607 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,607 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,607 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,607 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,607 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,608 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,608 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,608 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,608 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,608 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,609 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,609 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,609 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,609 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,610 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,610 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,610 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,610 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,611 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,611 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,611 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,611 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,611 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,612 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,612 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,612 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,612 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,612 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,613 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,613 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,613 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,613 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,614 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,614 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,614 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,614 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,618 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,619 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,619 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,619 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,628 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,628 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,628 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,628 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,630 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,631 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,631 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,631 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,633 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,633 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,634 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,634 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,634 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,634 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,636 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,636 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,636 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,637 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,637 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,637 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,637 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,637 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,638 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,638 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,638 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,638 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,638 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,639 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,639 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,639 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork4_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,639 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,639 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,639 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,640 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,640 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork4_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,640 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,640 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,640 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,643 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,644 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,644 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,644 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,646 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,646 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,647 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,647 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,647 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,647 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,649 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,650 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,650 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,650 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,652 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,653 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,653 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,653 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,655 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,656 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,656 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,656 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,658 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,659 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,659 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,659 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:30:47,766 INFO L149 ThreadInstanceAdder]: Constructed 121 joinOtherThreadTransitions. [2020-10-21 21:30:47,781 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-10-21 21:30:47,802 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 21:30:47,802 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 21:30:47,802 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 21:30:47,802 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 21:30:47,802 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 21:30:47,803 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 21:30:47,803 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 21:30:47,803 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 21:30:47,821 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 21:30:47,824 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 180 places, 252 transitions, 884 flow [2020-10-21 21:30:47,827 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 180 places, 252 transitions, 884 flow [2020-10-21 21:30:47,829 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 180 places, 252 transitions, 884 flow [2020-10-21 21:30:47,947 INFO L129 PetriNetUnfolder]: 67/298 cut-off events. [2020-10-21 21:30:47,948 INFO L130 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2020-10-21 21:30:47,965 INFO L80 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 298 events. 67/298 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 915 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 387. Up to 24 conditions per place. [2020-10-21 21:30:47,982 INFO L116 LiptonReduction]: Number of co-enabled transitions 4628 [2020-10-21 21:30:49,755 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-21 21:30:49,870 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-21 21:30:50,138 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2020-10-21 21:30:50,345 INFO L131 LiptonReduction]: Checked pairs total: 52821 [2020-10-21 21:30:50,345 INFO L133 LiptonReduction]: Total number of compositions: 89 [2020-10-21 21:30:50,352 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 101 places, 173 transitions, 726 flow [2020-10-21 21:30:50,927 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 3502 states. [2020-10-21 21:30:50,930 INFO L276 IsEmpty]: Start isEmpty. Operand 3502 states. [2020-10-21 21:30:50,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 21:30:50,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:50,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:50,939 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:30:50,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:50,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1423321664, now seen corresponding path program 1 times [2020-10-21 21:30:50,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:50,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943942291] [2020-10-21 21:30:50,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:51,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:51,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943942291] [2020-10-21 21:30:51,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:30:51,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 21:30:51,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816965354] [2020-10-21 21:30:51,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 21:30:51,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:51,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 21:30:51,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-21 21:30:51,255 INFO L87 Difference]: Start difference. First operand 3502 states. Second operand 5 states. [2020-10-21 21:30:51,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:51,556 INFO L93 Difference]: Finished difference Result 4761 states and 19901 transitions. [2020-10-21 21:30:51,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 21:30:51,558 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-21 21:30:51,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:51,628 INFO L225 Difference]: With dead ends: 4761 [2020-10-21 21:30:51,628 INFO L226 Difference]: Without dead ends: 4273 [2020-10-21 21:30:51,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-21 21:30:51,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4273 states. [2020-10-21 21:30:51,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4273 to 3019. [2020-10-21 21:30:51,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3019 states. [2020-10-21 21:30:51,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3019 states to 3019 states and 12273 transitions. [2020-10-21 21:30:51,864 INFO L78 Accepts]: Start accepts. Automaton has 3019 states and 12273 transitions. Word has length 9 [2020-10-21 21:30:51,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:51,864 INFO L481 AbstractCegarLoop]: Abstraction has 3019 states and 12273 transitions. [2020-10-21 21:30:51,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 21:30:51,865 INFO L276 IsEmpty]: Start isEmpty. Operand 3019 states and 12273 transitions. [2020-10-21 21:30:51,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 21:30:51,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:51,865 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:51,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 21:30:51,866 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:30:51,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:51,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1027712446, now seen corresponding path program 2 times [2020-10-21 21:30:51,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:51,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610111283] [2020-10-21 21:30:51,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:51,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:51,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610111283] [2020-10-21 21:30:51,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:30:51,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 21:30:51,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325798150] [2020-10-21 21:30:51,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-21 21:30:51,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:51,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-21 21:30:51,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-21 21:30:51,970 INFO L87 Difference]: Start difference. First operand 3019 states and 12273 transitions. Second operand 6 states. [2020-10-21 21:30:52,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:52,224 INFO L93 Difference]: Finished difference Result 4277 states and 18060 transitions. [2020-10-21 21:30:52,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 21:30:52,225 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-10-21 21:30:52,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:52,263 INFO L225 Difference]: With dead ends: 4277 [2020-10-21 21:30:52,264 INFO L226 Difference]: Without dead ends: 4277 [2020-10-21 21:30:52,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-21 21:30:52,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4277 states. [2020-10-21 21:30:52,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4277 to 3019. [2020-10-21 21:30:52,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3019 states. [2020-10-21 21:30:52,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3019 states to 3019 states and 12273 transitions. [2020-10-21 21:30:52,464 INFO L78 Accepts]: Start accepts. Automaton has 3019 states and 12273 transitions. Word has length 9 [2020-10-21 21:30:52,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:52,465 INFO L481 AbstractCegarLoop]: Abstraction has 3019 states and 12273 transitions. [2020-10-21 21:30:52,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-21 21:30:52,465 INFO L276 IsEmpty]: Start isEmpty. Operand 3019 states and 12273 transitions. [2020-10-21 21:30:52,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 21:30:52,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:52,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:52,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 21:30:52,467 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:30:52,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:52,467 INFO L82 PathProgramCache]: Analyzing trace with hash 556122090, now seen corresponding path program 3 times [2020-10-21 21:30:52,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:52,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323835943] [2020-10-21 21:30:52,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:52,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:52,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323835943] [2020-10-21 21:30:52,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:30:52,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 21:30:52,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664192262] [2020-10-21 21:30:52,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-21 21:30:52,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:52,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-21 21:30:52,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-21 21:30:52,590 INFO L87 Difference]: Start difference. First operand 3019 states and 12273 transitions. Second operand 6 states. [2020-10-21 21:30:52,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:52,843 INFO L93 Difference]: Finished difference Result 5523 states and 23828 transitions. [2020-10-21 21:30:52,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-21 21:30:52,844 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-10-21 21:30:52,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:52,900 INFO L225 Difference]: With dead ends: 5523 [2020-10-21 21:30:52,900 INFO L226 Difference]: Without dead ends: 5523 [2020-10-21 21:30:52,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-21 21:30:52,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5523 states. [2020-10-21 21:30:53,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5523 to 3008. [2020-10-21 21:30:53,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3008 states. [2020-10-21 21:30:53,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 12255 transitions. [2020-10-21 21:30:53,028 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 12255 transitions. Word has length 9 [2020-10-21 21:30:53,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:53,029 INFO L481 AbstractCegarLoop]: Abstraction has 3008 states and 12255 transitions. [2020-10-21 21:30:53,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-21 21:30:53,029 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 12255 transitions. [2020-10-21 21:30:53,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-21 21:30:53,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:53,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:53,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 21:30:53,032 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:30:53,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:53,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1988086522, now seen corresponding path program 1 times [2020-10-21 21:30:53,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:53,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13696472] [2020-10-21 21:30:53,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:53,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:53,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13696472] [2020-10-21 21:30:53,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:30:53,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 21:30:53,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187515661] [2020-10-21 21:30:53,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 21:30:53,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:53,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 21:30:53,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-21 21:30:53,176 INFO L87 Difference]: Start difference. First operand 3008 states and 12255 transitions. Second operand 5 states. [2020-10-21 21:30:53,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:53,323 INFO L93 Difference]: Finished difference Result 4187 states and 17338 transitions. [2020-10-21 21:30:53,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 21:30:53,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-21 21:30:53,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:53,341 INFO L225 Difference]: With dead ends: 4187 [2020-10-21 21:30:53,341 INFO L226 Difference]: Without dead ends: 4187 [2020-10-21 21:30:53,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-21 21:30:53,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4187 states. [2020-10-21 21:30:53,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4187 to 3589. [2020-10-21 21:30:53,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3589 states. [2020-10-21 21:30:53,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3589 states to 3589 states and 15016 transitions. [2020-10-21 21:30:53,537 INFO L78 Accepts]: Start accepts. Automaton has 3589 states and 15016 transitions. Word has length 16 [2020-10-21 21:30:53,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:53,538 INFO L481 AbstractCegarLoop]: Abstraction has 3589 states and 15016 transitions. [2020-10-21 21:30:53,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 21:30:53,538 INFO L276 IsEmpty]: Start isEmpty. Operand 3589 states and 15016 transitions. [2020-10-21 21:30:53,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-21 21:30:53,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:53,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:53,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-21 21:30:53,540 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:30:53,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:53,541 INFO L82 PathProgramCache]: Analyzing trace with hash 776672030, now seen corresponding path program 2 times [2020-10-21 21:30:53,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:53,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018641910] [2020-10-21 21:30:53,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:53,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:53,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018641910] [2020-10-21 21:30:53,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:30:53,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 21:30:53,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969880690] [2020-10-21 21:30:53,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 21:30:53,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:53,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 21:30:53,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 21:30:53,599 INFO L87 Difference]: Start difference. First operand 3589 states and 15016 transitions. Second operand 3 states. [2020-10-21 21:30:53,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:53,679 INFO L93 Difference]: Finished difference Result 5757 states and 23648 transitions. [2020-10-21 21:30:53,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 21:30:53,680 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-21 21:30:53,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:53,696 INFO L225 Difference]: With dead ends: 5757 [2020-10-21 21:30:53,696 INFO L226 Difference]: Without dead ends: 4163 [2020-10-21 21:30:53,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 21:30:53,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4163 states. [2020-10-21 21:30:53,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4163 to 3595. [2020-10-21 21:30:53,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3595 states. [2020-10-21 21:30:53,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3595 states to 3595 states and 14094 transitions. [2020-10-21 21:30:53,823 INFO L78 Accepts]: Start accepts. Automaton has 3595 states and 14094 transitions. Word has length 16 [2020-10-21 21:30:53,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:53,823 INFO L481 AbstractCegarLoop]: Abstraction has 3595 states and 14094 transitions. [2020-10-21 21:30:53,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 21:30:53,823 INFO L276 IsEmpty]: Start isEmpty. Operand 3595 states and 14094 transitions. [2020-10-21 21:30:53,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-21 21:30:53,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:53,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:53,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-21 21:30:53,826 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:30:53,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:53,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1692971290, now seen corresponding path program 1 times [2020-10-21 21:30:53,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:53,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958849292] [2020-10-21 21:30:53,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:53,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:53,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958849292] [2020-10-21 21:30:53,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:30:53,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 21:30:53,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422090506] [2020-10-21 21:30:53,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-21 21:30:53,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:53,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-21 21:30:53,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-21 21:30:53,909 INFO L87 Difference]: Start difference. First operand 3595 states and 14094 transitions. Second operand 6 states. [2020-10-21 21:30:54,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:54,101 INFO L93 Difference]: Finished difference Result 4831 states and 19135 transitions. [2020-10-21 21:30:54,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 21:30:54,102 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-21 21:30:54,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:54,119 INFO L225 Difference]: With dead ends: 4831 [2020-10-21 21:30:54,120 INFO L226 Difference]: Without dead ends: 4807 [2020-10-21 21:30:54,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-21 21:30:54,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4807 states. [2020-10-21 21:30:54,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4807 to 3588. [2020-10-21 21:30:54,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3588 states. [2020-10-21 21:30:54,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3588 states to 3588 states and 14085 transitions. [2020-10-21 21:30:54,337 INFO L78 Accepts]: Start accepts. Automaton has 3588 states and 14085 transitions. Word has length 17 [2020-10-21 21:30:54,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:54,338 INFO L481 AbstractCegarLoop]: Abstraction has 3588 states and 14085 transitions. [2020-10-21 21:30:54,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-21 21:30:54,338 INFO L276 IsEmpty]: Start isEmpty. Operand 3588 states and 14085 transitions. [2020-10-21 21:30:54,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-21 21:30:54,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:54,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:54,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-21 21:30:54,340 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:30:54,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:54,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1511808800, now seen corresponding path program 2 times [2020-10-21 21:30:54,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:54,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566885648] [2020-10-21 21:30:54,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:54,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:54,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566885648] [2020-10-21 21:30:54,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:30:54,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 21:30:54,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469071398] [2020-10-21 21:30:54,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-21 21:30:54,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:54,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-21 21:30:54,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-21 21:30:54,408 INFO L87 Difference]: Start difference. First operand 3588 states and 14085 transitions. Second operand 6 states. [2020-10-21 21:30:54,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:54,513 INFO L93 Difference]: Finished difference Result 4024 states and 15445 transitions. [2020-10-21 21:30:54,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 21:30:54,513 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-21 21:30:54,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:54,527 INFO L225 Difference]: With dead ends: 4024 [2020-10-21 21:30:54,527 INFO L226 Difference]: Without dead ends: 4024 [2020-10-21 21:30:54,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-21 21:30:54,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2020-10-21 21:30:54,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3573. [2020-10-21 21:30:54,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3573 states. [2020-10-21 21:30:54,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3573 states to 3573 states and 14045 transitions. [2020-10-21 21:30:54,631 INFO L78 Accepts]: Start accepts. Automaton has 3573 states and 14045 transitions. Word has length 17 [2020-10-21 21:30:54,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:54,632 INFO L481 AbstractCegarLoop]: Abstraction has 3573 states and 14045 transitions. [2020-10-21 21:30:54,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-21 21:30:54,632 INFO L276 IsEmpty]: Start isEmpty. Operand 3573 states and 14045 transitions. [2020-10-21 21:30:54,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-21 21:30:54,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:54,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:54,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-21 21:30:54,634 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:30:54,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:54,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1715651031, now seen corresponding path program 1 times [2020-10-21 21:30:54,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:54,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305472272] [2020-10-21 21:30:54,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:54,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:54,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305472272] [2020-10-21 21:30:54,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:30:54,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 21:30:54,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506451662] [2020-10-21 21:30:54,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 21:30:54,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:54,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 21:30:54,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-21 21:30:54,680 INFO L87 Difference]: Start difference. First operand 3573 states and 14045 transitions. Second operand 5 states. [2020-10-21 21:30:54,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:54,824 INFO L93 Difference]: Finished difference Result 4639 states and 18148 transitions. [2020-10-21 21:30:54,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 21:30:54,824 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-21 21:30:54,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:54,839 INFO L225 Difference]: With dead ends: 4639 [2020-10-21 21:30:54,839 INFO L226 Difference]: Without dead ends: 4543 [2020-10-21 21:30:54,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-21 21:30:54,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4543 states. [2020-10-21 21:30:54,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4543 to 4103. [2020-10-21 21:30:54,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4103 states. [2020-10-21 21:30:54,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4103 states to 4103 states and 16284 transitions. [2020-10-21 21:30:54,952 INFO L78 Accepts]: Start accepts. Automaton has 4103 states and 16284 transitions. Word has length 18 [2020-10-21 21:30:54,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:54,952 INFO L481 AbstractCegarLoop]: Abstraction has 4103 states and 16284 transitions. [2020-10-21 21:30:54,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 21:30:54,953 INFO L276 IsEmpty]: Start isEmpty. Operand 4103 states and 16284 transitions. [2020-10-21 21:30:54,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-21 21:30:54,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:54,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:54,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-21 21:30:54,954 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:30:54,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:54,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1948840627, now seen corresponding path program 2 times [2020-10-21 21:30:54,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:54,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223101798] [2020-10-21 21:30:54,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:55,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:55,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223101798] [2020-10-21 21:30:55,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:30:55,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 21:30:55,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318245597] [2020-10-21 21:30:55,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-21 21:30:55,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:55,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-21 21:30:55,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-21 21:30:55,005 INFO L87 Difference]: Start difference. First operand 4103 states and 16284 transitions. Second operand 6 states. [2020-10-21 21:30:55,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:55,513 INFO L93 Difference]: Finished difference Result 4755 states and 18464 transitions. [2020-10-21 21:30:55,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 21:30:55,514 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-21 21:30:55,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:55,525 INFO L225 Difference]: With dead ends: 4755 [2020-10-21 21:30:55,525 INFO L226 Difference]: Without dead ends: 4659 [2020-10-21 21:30:55,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-21 21:30:55,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4659 states. [2020-10-21 21:30:55,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4659 to 3713. [2020-10-21 21:30:55,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3713 states. [2020-10-21 21:30:55,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3713 states to 3713 states and 14455 transitions. [2020-10-21 21:30:55,626 INFO L78 Accepts]: Start accepts. Automaton has 3713 states and 14455 transitions. Word has length 18 [2020-10-21 21:30:55,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:55,626 INFO L481 AbstractCegarLoop]: Abstraction has 3713 states and 14455 transitions. [2020-10-21 21:30:55,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-21 21:30:55,626 INFO L276 IsEmpty]: Start isEmpty. Operand 3713 states and 14455 transitions. [2020-10-21 21:30:55,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-21 21:30:55,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:55,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:55,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-21 21:30:55,628 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:30:55,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:55,628 INFO L82 PathProgramCache]: Analyzing trace with hash -620579829, now seen corresponding path program 3 times [2020-10-21 21:30:55,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:55,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302674509] [2020-10-21 21:30:55,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:55,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:55,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302674509] [2020-10-21 21:30:55,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:30:55,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 21:30:55,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370813045] [2020-10-21 21:30:55,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-21 21:30:55,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:55,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-21 21:30:55,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-21 21:30:55,715 INFO L87 Difference]: Start difference. First operand 3713 states and 14455 transitions. Second operand 8 states. [2020-10-21 21:30:55,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:55,989 INFO L93 Difference]: Finished difference Result 4973 states and 19765 transitions. [2020-10-21 21:30:55,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-21 21:30:55,989 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-10-21 21:30:55,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:56,006 INFO L225 Difference]: With dead ends: 4973 [2020-10-21 21:30:56,006 INFO L226 Difference]: Without dead ends: 4899 [2020-10-21 21:30:56,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-21 21:30:56,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4899 states. [2020-10-21 21:30:56,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4899 to 4127. [2020-10-21 21:30:56,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4127 states. [2020-10-21 21:30:56,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4127 states to 4127 states and 16610 transitions. [2020-10-21 21:30:56,124 INFO L78 Accepts]: Start accepts. Automaton has 4127 states and 16610 transitions. Word has length 18 [2020-10-21 21:30:56,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:56,126 INFO L481 AbstractCegarLoop]: Abstraction has 4127 states and 16610 transitions. [2020-10-21 21:30:56,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-21 21:30:56,126 INFO L276 IsEmpty]: Start isEmpty. Operand 4127 states and 16610 transitions. [2020-10-21 21:30:56,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-21 21:30:56,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:56,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:56,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-21 21:30:56,128 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:30:56,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:56,128 INFO L82 PathProgramCache]: Analyzing trace with hash -570830033, now seen corresponding path program 4 times [2020-10-21 21:30:56,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:56,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174775679] [2020-10-21 21:30:56,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:56,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:56,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174775679] [2020-10-21 21:30:56,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:30:56,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-21 21:30:56,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492104140] [2020-10-21 21:30:56,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-21 21:30:56,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:56,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-21 21:30:56,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-21 21:30:56,250 INFO L87 Difference]: Start difference. First operand 4127 states and 16610 transitions. Second operand 10 states. [2020-10-21 21:30:56,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:56,683 INFO L93 Difference]: Finished difference Result 5275 states and 21270 transitions. [2020-10-21 21:30:56,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-21 21:30:56,683 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-10-21 21:30:56,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:56,696 INFO L225 Difference]: With dead ends: 5275 [2020-10-21 21:30:56,696 INFO L226 Difference]: Without dead ends: 5219 [2020-10-21 21:30:56,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-21 21:30:56,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5219 states. [2020-10-21 21:30:56,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5219 to 4127. [2020-10-21 21:30:56,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4127 states. [2020-10-21 21:30:56,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4127 states to 4127 states and 16610 transitions. [2020-10-21 21:30:56,806 INFO L78 Accepts]: Start accepts. Automaton has 4127 states and 16610 transitions. Word has length 18 [2020-10-21 21:30:56,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:56,807 INFO L481 AbstractCegarLoop]: Abstraction has 4127 states and 16610 transitions. [2020-10-21 21:30:56,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-21 21:30:56,807 INFO L276 IsEmpty]: Start isEmpty. Operand 4127 states and 16610 transitions. [2020-10-21 21:30:56,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-21 21:30:56,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:56,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:56,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-21 21:30:56,809 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:30:56,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:56,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1495509801, now seen corresponding path program 5 times [2020-10-21 21:30:56,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:56,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483122149] [2020-10-21 21:30:56,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:56,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:56,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483122149] [2020-10-21 21:30:56,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:30:56,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 21:30:56,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734751565] [2020-10-21 21:30:56,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-21 21:30:56,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:56,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-21 21:30:56,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-21 21:30:56,885 INFO L87 Difference]: Start difference. First operand 4127 states and 16610 transitions. Second operand 8 states. [2020-10-21 21:30:57,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:57,217 INFO L93 Difference]: Finished difference Result 6468 states and 26392 transitions. [2020-10-21 21:30:57,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-21 21:30:57,218 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-10-21 21:30:57,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:57,242 INFO L225 Difference]: With dead ends: 6468 [2020-10-21 21:30:57,242 INFO L226 Difference]: Without dead ends: 6394 [2020-10-21 21:30:57,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-21 21:30:57,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6394 states. [2020-10-21 21:30:57,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6394 to 4114. [2020-10-21 21:30:57,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4114 states. [2020-10-21 21:30:57,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4114 states to 4114 states and 16572 transitions. [2020-10-21 21:30:57,378 INFO L78 Accepts]: Start accepts. Automaton has 4114 states and 16572 transitions. Word has length 18 [2020-10-21 21:30:57,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:57,379 INFO L481 AbstractCegarLoop]: Abstraction has 4114 states and 16572 transitions. [2020-10-21 21:30:57,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-21 21:30:57,379 INFO L276 IsEmpty]: Start isEmpty. Operand 4114 states and 16572 transitions. [2020-10-21 21:30:57,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 21:30:57,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:57,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:57,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-21 21:30:57,381 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:30:57,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:57,381 INFO L82 PathProgramCache]: Analyzing trace with hash 2124042944, now seen corresponding path program 1 times [2020-10-21 21:30:57,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:57,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349468855] [2020-10-21 21:30:57,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:57,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:57,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349468855] [2020-10-21 21:30:57,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:30:57,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 21:30:57,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309631182] [2020-10-21 21:30:57,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-21 21:30:57,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:57,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-21 21:30:57,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-21 21:30:57,428 INFO L87 Difference]: Start difference. First operand 4114 states and 16572 transitions. Second operand 6 states. [2020-10-21 21:30:57,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:57,538 INFO L93 Difference]: Finished difference Result 4685 states and 18319 transitions. [2020-10-21 21:30:57,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 21:30:57,539 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-21 21:30:57,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:57,550 INFO L225 Difference]: With dead ends: 4685 [2020-10-21 21:30:57,551 INFO L226 Difference]: Without dead ends: 4685 [2020-10-21 21:30:57,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-21 21:30:57,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4685 states. [2020-10-21 21:30:57,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4685 to 4129. [2020-10-21 21:30:57,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4129 states. [2020-10-21 21:30:57,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4129 states to 4129 states and 16615 transitions. [2020-10-21 21:30:57,721 INFO L78 Accepts]: Start accepts. Automaton has 4129 states and 16615 transitions. Word has length 19 [2020-10-21 21:30:57,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:57,722 INFO L481 AbstractCegarLoop]: Abstraction has 4129 states and 16615 transitions. [2020-10-21 21:30:57,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-21 21:30:57,722 INFO L276 IsEmpty]: Start isEmpty. Operand 4129 states and 16615 transitions. [2020-10-21 21:30:57,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 21:30:57,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:57,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:57,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-21 21:30:57,726 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:30:57,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:57,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1995336633, now seen corresponding path program 1 times [2020-10-21 21:30:57,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:57,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403627288] [2020-10-21 21:30:57,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:57,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:57,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403627288] [2020-10-21 21:30:57,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:30:57,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-21 21:30:57,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838697092] [2020-10-21 21:30:57,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 21:30:57,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:57,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 21:30:57,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-21 21:30:57,853 INFO L87 Difference]: Start difference. First operand 4129 states and 16615 transitions. Second operand 9 states. [2020-10-21 21:30:58,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:58,173 INFO L93 Difference]: Finished difference Result 5929 states and 24603 transitions. [2020-10-21 21:30:58,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-21 21:30:58,174 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-21 21:30:58,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:58,191 INFO L225 Difference]: With dead ends: 5929 [2020-10-21 21:30:58,191 INFO L226 Difference]: Without dead ends: 5855 [2020-10-21 21:30:58,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-21 21:30:58,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5855 states. [2020-10-21 21:30:58,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5855 to 4117. [2020-10-21 21:30:58,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4117 states. [2020-10-21 21:30:58,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4117 states to 4117 states and 16571 transitions. [2020-10-21 21:30:58,308 INFO L78 Accepts]: Start accepts. Automaton has 4117 states and 16571 transitions. Word has length 19 [2020-10-21 21:30:58,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:58,308 INFO L481 AbstractCegarLoop]: Abstraction has 4117 states and 16571 transitions. [2020-10-21 21:30:58,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 21:30:58,309 INFO L276 IsEmpty]: Start isEmpty. Operand 4117 states and 16571 transitions. [2020-10-21 21:30:58,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 21:30:58,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:58,311 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:58,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-21 21:30:58,312 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:30:58,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:58,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1945586837, now seen corresponding path program 2 times [2020-10-21 21:30:58,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:58,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408823955] [2020-10-21 21:30:58,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:58,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:58,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408823955] [2020-10-21 21:30:58,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:30:58,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-21 21:30:58,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181150942] [2020-10-21 21:30:58,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 21:30:58,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:58,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 21:30:58,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-21 21:30:58,444 INFO L87 Difference]: Start difference. First operand 4117 states and 16571 transitions. Second operand 11 states. [2020-10-21 21:30:58,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:58,903 INFO L93 Difference]: Finished difference Result 5748 states and 23783 transitions. [2020-10-21 21:30:58,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-21 21:30:58,903 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2020-10-21 21:30:58,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:58,917 INFO L225 Difference]: With dead ends: 5748 [2020-10-21 21:30:58,917 INFO L226 Difference]: Without dead ends: 5686 [2020-10-21 21:30:58,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:30:58,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5686 states. [2020-10-21 21:30:59,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5686 to 4066. [2020-10-21 21:30:59,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4066 states. [2020-10-21 21:30:59,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4066 states to 4066 states and 16383 transitions. [2020-10-21 21:30:59,024 INFO L78 Accepts]: Start accepts. Automaton has 4066 states and 16383 transitions. Word has length 19 [2020-10-21 21:30:59,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:59,024 INFO L481 AbstractCegarLoop]: Abstraction has 4066 states and 16383 transitions. [2020-10-21 21:30:59,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 21:30:59,024 INFO L276 IsEmpty]: Start isEmpty. Operand 4066 states and 16383 transitions. [2020-10-21 21:30:59,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 21:30:59,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:59,027 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:59,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-21 21:30:59,027 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:30:59,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:59,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1149139064, now seen corresponding path program 2 times [2020-10-21 21:30:59,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:59,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835634161] [2020-10-21 21:30:59,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:59,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:59,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:59,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835634161] [2020-10-21 21:30:59,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:30:59,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-21 21:30:59,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114994115] [2020-10-21 21:30:59,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 21:30:59,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:59,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 21:30:59,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-21 21:30:59,157 INFO L87 Difference]: Start difference. First operand 4066 states and 16383 transitions. Second operand 7 states. [2020-10-21 21:30:59,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:59,275 INFO L93 Difference]: Finished difference Result 4549 states and 17853 transitions. [2020-10-21 21:30:59,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 21:30:59,276 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 21:30:59,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:59,287 INFO L225 Difference]: With dead ends: 4549 [2020-10-21 21:30:59,287 INFO L226 Difference]: Without dead ends: 4549 [2020-10-21 21:30:59,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-21 21:30:59,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4549 states. [2020-10-21 21:30:59,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4549 to 4013. [2020-10-21 21:30:59,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4013 states. [2020-10-21 21:30:59,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4013 states to 4013 states and 16198 transitions. [2020-10-21 21:30:59,382 INFO L78 Accepts]: Start accepts. Automaton has 4013 states and 16198 transitions. Word has length 19 [2020-10-21 21:30:59,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:59,382 INFO L481 AbstractCegarLoop]: Abstraction has 4013 states and 16198 transitions. [2020-10-21 21:30:59,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 21:30:59,382 INFO L276 IsEmpty]: Start isEmpty. Operand 4013 states and 16198 transitions. [2020-10-21 21:30:59,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-21 21:30:59,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:59,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:59,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-21 21:30:59,385 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:30:59,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:59,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1420640526, now seen corresponding path program 1 times [2020-10-21 21:30:59,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:59,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107506075] [2020-10-21 21:30:59,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:59,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:59,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107506075] [2020-10-21 21:30:59,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:30:59,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 21:30:59,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832124074] [2020-10-21 21:30:59,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-21 21:30:59,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:59,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-21 21:30:59,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-21 21:30:59,473 INFO L87 Difference]: Start difference. First operand 4013 states and 16198 transitions. Second operand 8 states. [2020-10-21 21:30:59,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:59,759 INFO L93 Difference]: Finished difference Result 5053 states and 20226 transitions. [2020-10-21 21:30:59,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-21 21:30:59,759 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-10-21 21:30:59,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:59,773 INFO L225 Difference]: With dead ends: 5053 [2020-10-21 21:30:59,773 INFO L226 Difference]: Without dead ends: 5007 [2020-10-21 21:30:59,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-21 21:30:59,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5007 states. [2020-10-21 21:30:59,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5007 to 4013. [2020-10-21 21:30:59,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4013 states. [2020-10-21 21:30:59,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4013 states to 4013 states and 16198 transitions. [2020-10-21 21:30:59,868 INFO L78 Accepts]: Start accepts. Automaton has 4013 states and 16198 transitions. Word has length 20 [2020-10-21 21:30:59,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:59,869 INFO L481 AbstractCegarLoop]: Abstraction has 4013 states and 16198 transitions. [2020-10-21 21:30:59,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-21 21:30:59,869 INFO L276 IsEmpty]: Start isEmpty. Operand 4013 states and 16198 transitions. [2020-10-21 21:30:59,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-21 21:30:59,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:59,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:59,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-21 21:30:59,871 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:30:59,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:59,871 INFO L82 PathProgramCache]: Analyzing trace with hash 282076670, now seen corresponding path program 2 times [2020-10-21 21:30:59,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:59,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925801362] [2020-10-21 21:30:59,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:59,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:59,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925801362] [2020-10-21 21:30:59,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:30:59,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-21 21:30:59,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133325522] [2020-10-21 21:30:59,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-21 21:30:59,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:59,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-21 21:30:59,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-21 21:30:59,986 INFO L87 Difference]: Start difference. First operand 4013 states and 16198 transitions. Second operand 10 states. [2020-10-21 21:31:00,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:00,326 INFO L93 Difference]: Finished difference Result 5549 states and 22340 transitions. [2020-10-21 21:31:00,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-21 21:31:00,326 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-21 21:31:00,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:00,340 INFO L225 Difference]: With dead ends: 5549 [2020-10-21 21:31:00,340 INFO L226 Difference]: Without dead ends: 5503 [2020-10-21 21:31:00,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-10-21 21:31:00,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5503 states. [2020-10-21 21:31:00,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5503 to 4149. [2020-10-21 21:31:00,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4149 states. [2020-10-21 21:31:00,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4149 states to 4149 states and 16837 transitions. [2020-10-21 21:31:00,447 INFO L78 Accepts]: Start accepts. Automaton has 4149 states and 16837 transitions. Word has length 20 [2020-10-21 21:31:00,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:00,447 INFO L481 AbstractCegarLoop]: Abstraction has 4149 states and 16837 transitions. [2020-10-21 21:31:00,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-21 21:31:00,447 INFO L276 IsEmpty]: Start isEmpty. Operand 4149 states and 16837 transitions. [2020-10-21 21:31:00,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-21 21:31:00,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:00,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:31:00,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-21 21:31:00,452 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:31:00,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:00,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1943164257, now seen corresponding path program 1 times [2020-10-21 21:31:00,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:00,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077858661] [2020-10-21 21:31:00,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:00,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:00,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077858661] [2020-10-21 21:31:00,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:31:00,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-21 21:31:00,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921975269] [2020-10-21 21:31:00,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-21 21:31:00,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:00,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-21 21:31:00,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-21 21:31:00,582 INFO L87 Difference]: Start difference. First operand 4149 states and 16837 transitions. Second operand 10 states. [2020-10-21 21:31:01,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:01,019 INFO L93 Difference]: Finished difference Result 6400 states and 26033 transitions. [2020-10-21 21:31:01,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-21 21:31:01,019 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-21 21:31:01,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:01,033 INFO L225 Difference]: With dead ends: 6400 [2020-10-21 21:31:01,034 INFO L226 Difference]: Without dead ends: 6354 [2020-10-21 21:31:01,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-10-21 21:31:01,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6354 states. [2020-10-21 21:31:01,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6354 to 3978. [2020-10-21 21:31:01,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3978 states. [2020-10-21 21:31:01,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3978 states to 3978 states and 16074 transitions. [2020-10-21 21:31:01,141 INFO L78 Accepts]: Start accepts. Automaton has 3978 states and 16074 transitions. Word has length 20 [2020-10-21 21:31:01,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:01,141 INFO L481 AbstractCegarLoop]: Abstraction has 3978 states and 16074 transitions. [2020-10-21 21:31:01,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-21 21:31:01,141 INFO L276 IsEmpty]: Start isEmpty. Operand 3978 states and 16074 transitions. [2020-10-21 21:31:01,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-21 21:31:01,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:01,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:31:01,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-21 21:31:01,144 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:31:01,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:01,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1568244378, now seen corresponding path program 3 times [2020-10-21 21:31:01,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:01,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8430515] [2020-10-21 21:31:01,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:01,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:01,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8430515] [2020-10-21 21:31:01,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:31:01,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-21 21:31:01,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638821361] [2020-10-21 21:31:01,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 21:31:01,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:01,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 21:31:01,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-21 21:31:01,205 INFO L87 Difference]: Start difference. First operand 3978 states and 16074 transitions. Second operand 7 states. [2020-10-21 21:31:01,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:01,409 INFO L93 Difference]: Finished difference Result 6325 states and 25457 transitions. [2020-10-21 21:31:01,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-21 21:31:01,409 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-21 21:31:01,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:01,423 INFO L225 Difference]: With dead ends: 6325 [2020-10-21 21:31:01,424 INFO L226 Difference]: Without dead ends: 6279 [2020-10-21 21:31:01,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-21 21:31:01,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6279 states. [2020-10-21 21:31:01,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6279 to 3948. [2020-10-21 21:31:01,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3948 states. [2020-10-21 21:31:01,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3948 states to 3948 states and 16005 transitions. [2020-10-21 21:31:01,501 INFO L78 Accepts]: Start accepts. Automaton has 3948 states and 16005 transitions. Word has length 20 [2020-10-21 21:31:01,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:01,502 INFO L481 AbstractCegarLoop]: Abstraction has 3948 states and 16005 transitions. [2020-10-21 21:31:01,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 21:31:01,502 INFO L276 IsEmpty]: Start isEmpty. Operand 3948 states and 16005 transitions. [2020-10-21 21:31:01,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 21:31:01,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:01,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:31:01,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-21 21:31:01,504 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:31:01,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:01,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1192691367, now seen corresponding path program 1 times [2020-10-21 21:31:01,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:01,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740227613] [2020-10-21 21:31:01,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:01,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:01,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740227613] [2020-10-21 21:31:01,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:31:01,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 21:31:01,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648757643] [2020-10-21 21:31:01,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 21:31:01,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:01,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 21:31:01,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-21 21:31:01,552 INFO L87 Difference]: Start difference. First operand 3948 states and 16005 transitions. Second operand 5 states. [2020-10-21 21:31:01,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:01,676 INFO L93 Difference]: Finished difference Result 4734 states and 18681 transitions. [2020-10-21 21:31:01,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 21:31:01,676 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-21 21:31:01,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:01,687 INFO L225 Difference]: With dead ends: 4734 [2020-10-21 21:31:01,687 INFO L226 Difference]: Without dead ends: 4659 [2020-10-21 21:31:01,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-21 21:31:01,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4659 states. [2020-10-21 21:31:01,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4659 to 4277. [2020-10-21 21:31:01,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4277 states. [2020-10-21 21:31:01,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4277 states to 4277 states and 17201 transitions. [2020-10-21 21:31:01,753 INFO L78 Accepts]: Start accepts. Automaton has 4277 states and 17201 transitions. Word has length 21 [2020-10-21 21:31:01,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:01,753 INFO L481 AbstractCegarLoop]: Abstraction has 4277 states and 17201 transitions. [2020-10-21 21:31:01,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 21:31:01,753 INFO L276 IsEmpty]: Start isEmpty. Operand 4277 states and 17201 transitions. [2020-10-21 21:31:01,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 21:31:01,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:01,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:31:01,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-21 21:31:01,756 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:31:01,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:01,757 INFO L82 PathProgramCache]: Analyzing trace with hash -796445437, now seen corresponding path program 2 times [2020-10-21 21:31:01,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:01,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403601626] [2020-10-21 21:31:01,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:01,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:01,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403601626] [2020-10-21 21:31:01,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:31:01,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 21:31:01,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140925008] [2020-10-21 21:31:01,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-21 21:31:01,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:01,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-21 21:31:01,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-21 21:31:01,806 INFO L87 Difference]: Start difference. First operand 4277 states and 17201 transitions. Second operand 6 states. [2020-10-21 21:31:01,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:01,981 INFO L93 Difference]: Finished difference Result 5056 states and 19868 transitions. [2020-10-21 21:31:01,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 21:31:01,982 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-21 21:31:01,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:01,992 INFO L225 Difference]: With dead ends: 5056 [2020-10-21 21:31:01,993 INFO L226 Difference]: Without dead ends: 4981 [2020-10-21 21:31:01,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-21 21:31:02,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4981 states. [2020-10-21 21:31:02,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4981 to 4270. [2020-10-21 21:31:02,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4270 states. [2020-10-21 21:31:02,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4270 states to 4270 states and 17192 transitions. [2020-10-21 21:31:02,063 INFO L78 Accepts]: Start accepts. Automaton has 4270 states and 17192 transitions. Word has length 21 [2020-10-21 21:31:02,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:02,063 INFO L481 AbstractCegarLoop]: Abstraction has 4270 states and 17192 transitions. [2020-10-21 21:31:02,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-21 21:31:02,063 INFO L276 IsEmpty]: Start isEmpty. Operand 4270 states and 17192 transitions. [2020-10-21 21:31:02,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 21:31:02,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:02,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:31:02,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-21 21:31:02,065 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:31:02,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:02,066 INFO L82 PathProgramCache]: Analyzing trace with hash -112710267, now seen corresponding path program 3 times [2020-10-21 21:31:02,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:02,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164457275] [2020-10-21 21:31:02,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:02,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:02,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164457275] [2020-10-21 21:31:02,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:31:02,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 21:31:02,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960970971] [2020-10-21 21:31:02,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-21 21:31:02,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:02,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-21 21:31:02,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-21 21:31:02,121 INFO L87 Difference]: Start difference. First operand 4270 states and 17192 transitions. Second operand 6 states. [2020-10-21 21:31:02,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:02,271 INFO L93 Difference]: Finished difference Result 5197 states and 20300 transitions. [2020-10-21 21:31:02,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 21:31:02,272 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-21 21:31:02,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:02,284 INFO L225 Difference]: With dead ends: 5197 [2020-10-21 21:31:02,284 INFO L226 Difference]: Without dead ends: 4674 [2020-10-21 21:31:02,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-21 21:31:02,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4674 states. [2020-10-21 21:31:02,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4674 to 3901. [2020-10-21 21:31:02,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3901 states. [2020-10-21 21:31:02,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3901 states to 3901 states and 15421 transitions. [2020-10-21 21:31:02,375 INFO L78 Accepts]: Start accepts. Automaton has 3901 states and 15421 transitions. Word has length 21 [2020-10-21 21:31:02,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:02,375 INFO L481 AbstractCegarLoop]: Abstraction has 3901 states and 15421 transitions. [2020-10-21 21:31:02,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-21 21:31:02,376 INFO L276 IsEmpty]: Start isEmpty. Operand 3901 states and 15421 transitions. [2020-10-21 21:31:02,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 21:31:02,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:02,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:31:02,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-21 21:31:02,379 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:31:02,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:02,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1192651111, now seen corresponding path program 1 times [2020-10-21 21:31:02,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:02,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649434829] [2020-10-21 21:31:02,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:02,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:02,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:02,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649434829] [2020-10-21 21:31:02,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:31:02,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-21 21:31:02,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865511165] [2020-10-21 21:31:02,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 21:31:02,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:02,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 21:31:02,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-21 21:31:02,468 INFO L87 Difference]: Start difference. First operand 3901 states and 15421 transitions. Second operand 7 states. [2020-10-21 21:31:02,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:02,594 INFO L93 Difference]: Finished difference Result 4542 states and 17587 transitions. [2020-10-21 21:31:02,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 21:31:02,595 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-21 21:31:02,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:02,605 INFO L225 Difference]: With dead ends: 4542 [2020-10-21 21:31:02,605 INFO L226 Difference]: Without dead ends: 4387 [2020-10-21 21:31:02,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-21 21:31:02,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4387 states. [2020-10-21 21:31:02,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4387 to 3891. [2020-10-21 21:31:02,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3891 states. [2020-10-21 21:31:02,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3891 states to 3891 states and 15399 transitions. [2020-10-21 21:31:02,669 INFO L78 Accepts]: Start accepts. Automaton has 3891 states and 15399 transitions. Word has length 21 [2020-10-21 21:31:02,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:02,670 INFO L481 AbstractCegarLoop]: Abstraction has 3891 states and 15399 transitions. [2020-10-21 21:31:02,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 21:31:02,670 INFO L276 IsEmpty]: Start isEmpty. Operand 3891 states and 15399 transitions. [2020-10-21 21:31:02,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 21:31:02,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:02,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:31:02,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-21 21:31:02,673 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:31:02,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:02,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1805729590, now seen corresponding path program 1 times [2020-10-21 21:31:02,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:02,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904350125] [2020-10-21 21:31:02,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:02,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:02,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904350125] [2020-10-21 21:31:02,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:31:02,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-21 21:31:02,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852484233] [2020-10-21 21:31:02,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 21:31:02,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:02,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 21:31:02,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-21 21:31:02,827 INFO L87 Difference]: Start difference. First operand 3891 states and 15399 transitions. Second operand 11 states. [2020-10-21 21:31:03,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:03,283 INFO L93 Difference]: Finished difference Result 4755 states and 18401 transitions. [2020-10-21 21:31:03,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-21 21:31:03,284 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-21 21:31:03,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:03,295 INFO L225 Difference]: With dead ends: 4755 [2020-10-21 21:31:03,295 INFO L226 Difference]: Without dead ends: 4706 [2020-10-21 21:31:03,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:31:03,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4706 states. [2020-10-21 21:31:03,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4706 to 3503. [2020-10-21 21:31:03,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3503 states. [2020-10-21 21:31:03,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3503 states to 3503 states and 13480 transitions. [2020-10-21 21:31:03,380 INFO L78 Accepts]: Start accepts. Automaton has 3503 states and 13480 transitions. Word has length 21 [2020-10-21 21:31:03,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:03,381 INFO L481 AbstractCegarLoop]: Abstraction has 3503 states and 13480 transitions. [2020-10-21 21:31:03,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 21:31:03,381 INFO L276 IsEmpty]: Start isEmpty. Operand 3503 states and 13480 transitions. [2020-10-21 21:31:03,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 21:31:03,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:03,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:31:03,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-21 21:31:03,384 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:31:03,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:03,384 INFO L82 PathProgramCache]: Analyzing trace with hash -895791388, now seen corresponding path program 1 times [2020-10-21 21:31:03,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:03,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193966480] [2020-10-21 21:31:03,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:03,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:03,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193966480] [2020-10-21 21:31:03,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:31:03,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-21 21:31:03,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092736992] [2020-10-21 21:31:03,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-21 21:31:03,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:03,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-21 21:31:03,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-21 21:31:03,500 INFO L87 Difference]: Start difference. First operand 3503 states and 13480 transitions. Second operand 10 states. [2020-10-21 21:31:03,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:03,810 INFO L93 Difference]: Finished difference Result 4973 states and 19560 transitions. [2020-10-21 21:31:03,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-21 21:31:03,811 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2020-10-21 21:31:03,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:03,823 INFO L225 Difference]: With dead ends: 4973 [2020-10-21 21:31:03,823 INFO L226 Difference]: Without dead ends: 4899 [2020-10-21 21:31:03,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-21 21:31:03,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4899 states. [2020-10-21 21:31:03,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4899 to 3757. [2020-10-21 21:31:03,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3757 states. [2020-10-21 21:31:03,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3757 states to 3757 states and 14845 transitions. [2020-10-21 21:31:03,910 INFO L78 Accepts]: Start accepts. Automaton has 3757 states and 14845 transitions. Word has length 21 [2020-10-21 21:31:03,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:03,910 INFO L481 AbstractCegarLoop]: Abstraction has 3757 states and 14845 transitions. [2020-10-21 21:31:03,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-21 21:31:03,911 INFO L276 IsEmpty]: Start isEmpty. Operand 3757 states and 14845 transitions. [2020-10-21 21:31:03,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 21:31:03,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:03,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:31:03,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-21 21:31:03,914 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:31:03,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:03,914 INFO L82 PathProgramCache]: Analyzing trace with hash -846041592, now seen corresponding path program 2 times [2020-10-21 21:31:03,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:03,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161732948] [2020-10-21 21:31:03,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:04,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:04,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161732948] [2020-10-21 21:31:04,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:31:04,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-21 21:31:04,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407784268] [2020-10-21 21:31:04,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 21:31:04,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:04,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 21:31:04,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-21 21:31:04,083 INFO L87 Difference]: Start difference. First operand 3757 states and 14845 transitions. Second operand 12 states. [2020-10-21 21:31:04,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:04,440 INFO L93 Difference]: Finished difference Result 4418 states and 17155 transitions. [2020-10-21 21:31:04,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-21 21:31:04,440 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2020-10-21 21:31:04,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:04,449 INFO L225 Difference]: With dead ends: 4418 [2020-10-21 21:31:04,449 INFO L226 Difference]: Without dead ends: 4262 [2020-10-21 21:31:04,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-10-21 21:31:04,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4262 states. [2020-10-21 21:31:04,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4262 to 3004. [2020-10-21 21:31:04,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3004 states. [2020-10-21 21:31:04,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3004 states to 3004 states and 11303 transitions. [2020-10-21 21:31:04,501 INFO L78 Accepts]: Start accepts. Automaton has 3004 states and 11303 transitions. Word has length 21 [2020-10-21 21:31:04,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:04,502 INFO L481 AbstractCegarLoop]: Abstraction has 3004 states and 11303 transitions. [2020-10-21 21:31:04,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 21:31:04,502 INFO L276 IsEmpty]: Start isEmpty. Operand 3004 states and 11303 transitions. [2020-10-21 21:31:04,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 21:31:04,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:04,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:31:04,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-21 21:31:04,504 INFO L429 AbstractCegarLoop]: === Iteration 28 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:31:04,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:04,505 INFO L82 PathProgramCache]: Analyzing trace with hash 73563545, now seen corresponding path program 2 times [2020-10-21 21:31:04,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:04,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108220353] [2020-10-21 21:31:04,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:04,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:04,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108220353] [2020-10-21 21:31:04,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:31:04,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 21:31:04,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771784342] [2020-10-21 21:31:04,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-21 21:31:04,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:04,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-21 21:31:04,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-21 21:31:04,590 INFO L87 Difference]: Start difference. First operand 3004 states and 11303 transitions. Second operand 8 states. [2020-10-21 21:31:04,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:04,715 INFO L93 Difference]: Finished difference Result 3058 states and 11357 transitions. [2020-10-21 21:31:04,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 21:31:04,715 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-21 21:31:04,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:04,722 INFO L225 Difference]: With dead ends: 3058 [2020-10-21 21:31:04,722 INFO L226 Difference]: Without dead ends: 3058 [2020-10-21 21:31:04,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-21 21:31:04,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2020-10-21 21:31:04,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 2831. [2020-10-21 21:31:04,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2831 states. [2020-10-21 21:31:04,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2831 states to 2831 states and 10625 transitions. [2020-10-21 21:31:04,763 INFO L78 Accepts]: Start accepts. Automaton has 2831 states and 10625 transitions. Word has length 21 [2020-10-21 21:31:04,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:04,764 INFO L481 AbstractCegarLoop]: Abstraction has 2831 states and 10625 transitions. [2020-10-21 21:31:04,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-21 21:31:04,764 INFO L276 IsEmpty]: Start isEmpty. Operand 2831 states and 10625 transitions. [2020-10-21 21:31:04,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-21 21:31:04,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:04,766 INFO L422 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] [2020-10-21 21:31:04,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-21 21:31:04,766 INFO L429 AbstractCegarLoop]: === Iteration 29 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:31:04,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:04,767 INFO L82 PathProgramCache]: Analyzing trace with hash 800776370, now seen corresponding path program 1 times [2020-10-21 21:31:04,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:04,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97223361] [2020-10-21 21:31:04,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:04,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:04,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97223361] [2020-10-21 21:31:04,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:31:04,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 21:31:04,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981056135] [2020-10-21 21:31:04,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-21 21:31:04,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:04,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-21 21:31:04,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-21 21:31:04,842 INFO L87 Difference]: Start difference. First operand 2831 states and 10625 transitions. Second operand 8 states. [2020-10-21 21:31:05,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:05,024 INFO L93 Difference]: Finished difference Result 3544 states and 13071 transitions. [2020-10-21 21:31:05,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-21 21:31:05,024 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-10-21 21:31:05,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:05,032 INFO L225 Difference]: With dead ends: 3544 [2020-10-21 21:31:05,032 INFO L226 Difference]: Without dead ends: 3484 [2020-10-21 21:31:05,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-21 21:31:05,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3484 states. [2020-10-21 21:31:05,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3484 to 2822. [2020-10-21 21:31:05,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2822 states. [2020-10-21 21:31:05,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2822 states to 2822 states and 10606 transitions. [2020-10-21 21:31:05,073 INFO L78 Accepts]: Start accepts. Automaton has 2822 states and 10606 transitions. Word has length 22 [2020-10-21 21:31:05,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:05,073 INFO L481 AbstractCegarLoop]: Abstraction has 2822 states and 10606 transitions. [2020-10-21 21:31:05,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-21 21:31:05,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2822 states and 10606 transitions. [2020-10-21 21:31:05,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-21 21:31:05,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:05,075 INFO L422 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] [2020-10-21 21:31:05,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-21 21:31:05,075 INFO L429 AbstractCegarLoop]: === Iteration 30 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:31:05,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:05,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1754318964, now seen corresponding path program 2 times [2020-10-21 21:31:05,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:05,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873607088] [2020-10-21 21:31:05,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:05,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:05,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873607088] [2020-10-21 21:31:05,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:31:05,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-21 21:31:05,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189780807] [2020-10-21 21:31:05,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 21:31:05,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:05,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 21:31:05,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-21 21:31:05,158 INFO L87 Difference]: Start difference. First operand 2822 states and 10606 transitions. Second operand 9 states. [2020-10-21 21:31:05,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:05,367 INFO L93 Difference]: Finished difference Result 3525 states and 13034 transitions. [2020-10-21 21:31:05,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-21 21:31:05,368 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-10-21 21:31:05,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:05,375 INFO L225 Difference]: With dead ends: 3525 [2020-10-21 21:31:05,375 INFO L226 Difference]: Without dead ends: 3465 [2020-10-21 21:31:05,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-21 21:31:05,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3465 states. [2020-10-21 21:31:05,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3465 to 2822. [2020-10-21 21:31:05,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2822 states. [2020-10-21 21:31:05,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2822 states to 2822 states and 10606 transitions. [2020-10-21 21:31:05,423 INFO L78 Accepts]: Start accepts. Automaton has 2822 states and 10606 transitions. Word has length 22 [2020-10-21 21:31:05,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:05,424 INFO L481 AbstractCegarLoop]: Abstraction has 2822 states and 10606 transitions. [2020-10-21 21:31:05,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 21:31:05,424 INFO L276 IsEmpty]: Start isEmpty. Operand 2822 states and 10606 transitions. [2020-10-21 21:31:05,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-21 21:31:05,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:05,426 INFO L422 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] [2020-10-21 21:31:05,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-21 21:31:05,427 INFO L429 AbstractCegarLoop]: === Iteration 31 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:31:05,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:05,427 INFO L82 PathProgramCache]: Analyzing trace with hash -901390894, now seen corresponding path program 3 times [2020-10-21 21:31:05,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:05,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024560962] [2020-10-21 21:31:05,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:05,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:05,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024560962] [2020-10-21 21:31:05,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:31:05,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-21 21:31:05,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961775634] [2020-10-21 21:31:05,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 21:31:05,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:05,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 21:31:05,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-21 21:31:05,553 INFO L87 Difference]: Start difference. First operand 2822 states and 10606 transitions. Second operand 11 states. [2020-10-21 21:31:05,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:05,872 INFO L93 Difference]: Finished difference Result 3740 states and 13820 transitions. [2020-10-21 21:31:05,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-21 21:31:05,872 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2020-10-21 21:31:05,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:05,881 INFO L225 Difference]: With dead ends: 3740 [2020-10-21 21:31:05,881 INFO L226 Difference]: Without dead ends: 3680 [2020-10-21 21:31:05,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:31:05,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3680 states. [2020-10-21 21:31:05,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3680 to 2822. [2020-10-21 21:31:05,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2822 states. [2020-10-21 21:31:05,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2822 states to 2822 states and 10603 transitions. [2020-10-21 21:31:05,927 INFO L78 Accepts]: Start accepts. Automaton has 2822 states and 10603 transitions. Word has length 22 [2020-10-21 21:31:05,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:05,927 INFO L481 AbstractCegarLoop]: Abstraction has 2822 states and 10603 transitions. [2020-10-21 21:31:05,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 21:31:05,928 INFO L276 IsEmpty]: Start isEmpty. Operand 2822 states and 10603 transitions. [2020-10-21 21:31:05,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-21 21:31:05,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:05,929 INFO L422 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] [2020-10-21 21:31:05,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-21 21:31:05,930 INFO L429 AbstractCegarLoop]: === Iteration 32 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:31:05,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:05,930 INFO L82 PathProgramCache]: Analyzing trace with hash -261805906, now seen corresponding path program 4 times [2020-10-21 21:31:05,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:05,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574312234] [2020-10-21 21:31:05,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:06,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:06,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574312234] [2020-10-21 21:31:06,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:31:06,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-21 21:31:06,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737964076] [2020-10-21 21:31:06,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 21:31:06,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:06,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 21:31:06,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-21 21:31:06,010 INFO L87 Difference]: Start difference. First operand 2822 states and 10603 transitions. Second operand 9 states. [2020-10-21 21:31:06,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:06,243 INFO L93 Difference]: Finished difference Result 4237 states and 15414 transitions. [2020-10-21 21:31:06,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-21 21:31:06,244 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-10-21 21:31:06,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:06,253 INFO L225 Difference]: With dead ends: 4237 [2020-10-21 21:31:06,254 INFO L226 Difference]: Without dead ends: 4177 [2020-10-21 21:31:06,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-21 21:31:06,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4177 states. [2020-10-21 21:31:06,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4177 to 2670. [2020-10-21 21:31:06,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2670 states. [2020-10-21 21:31:06,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 9904 transitions. [2020-10-21 21:31:06,330 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 9904 transitions. Word has length 22 [2020-10-21 21:31:06,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:06,331 INFO L481 AbstractCegarLoop]: Abstraction has 2670 states and 9904 transitions. [2020-10-21 21:31:06,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 21:31:06,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 9904 transitions. [2020-10-21 21:31:06,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 21:31:06,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:06,333 INFO L422 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] [2020-10-21 21:31:06,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-21 21:31:06,333 INFO L429 AbstractCegarLoop]: === Iteration 33 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:31:06,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:06,333 INFO L82 PathProgramCache]: Analyzing trace with hash 618359143, now seen corresponding path program 1 times [2020-10-21 21:31:06,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:06,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874885585] [2020-10-21 21:31:06,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:06,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:06,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874885585] [2020-10-21 21:31:06,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:31:06,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-21 21:31:06,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047214440] [2020-10-21 21:31:06,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 21:31:06,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:06,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 21:31:06,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-21 21:31:06,482 INFO L87 Difference]: Start difference. First operand 2670 states and 9904 transitions. Second operand 12 states. [2020-10-21 21:31:06,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:06,881 INFO L93 Difference]: Finished difference Result 3103 states and 11113 transitions. [2020-10-21 21:31:06,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-21 21:31:06,881 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-21 21:31:06,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:06,892 INFO L225 Difference]: With dead ends: 3103 [2020-10-21 21:31:06,892 INFO L226 Difference]: Without dead ends: 3007 [2020-10-21 21:31:06,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-10-21 21:31:06,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2020-10-21 21:31:06,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 2170. [2020-10-21 21:31:06,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2170 states. [2020-10-21 21:31:06,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2170 states to 2170 states and 7789 transitions. [2020-10-21 21:31:06,960 INFO L78 Accepts]: Start accepts. Automaton has 2170 states and 7789 transitions. Word has length 23 [2020-10-21 21:31:06,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:06,960 INFO L481 AbstractCegarLoop]: Abstraction has 2170 states and 7789 transitions. [2020-10-21 21:31:06,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 21:31:06,960 INFO L276 IsEmpty]: Start isEmpty. Operand 2170 states and 7789 transitions. [2020-10-21 21:31:06,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 21:31:06,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:06,964 INFO L422 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] [2020-10-21 21:31:06,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-21 21:31:06,964 INFO L429 AbstractCegarLoop]: === Iteration 34 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:31:06,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:06,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1823757131, now seen corresponding path program 1 times [2020-10-21 21:31:06,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:06,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037454236] [2020-10-21 21:31:06,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:07,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:07,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037454236] [2020-10-21 21:31:07,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:31:07,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-21 21:31:07,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885634754] [2020-10-21 21:31:07,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-21 21:31:07,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:07,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-21 21:31:07,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-21 21:31:07,073 INFO L87 Difference]: Start difference. First operand 2170 states and 7789 transitions. Second operand 10 states. [2020-10-21 21:31:07,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:07,350 INFO L93 Difference]: Finished difference Result 3115 states and 11153 transitions. [2020-10-21 21:31:07,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-21 21:31:07,350 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2020-10-21 21:31:07,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:07,357 INFO L225 Difference]: With dead ends: 3115 [2020-10-21 21:31:07,357 INFO L226 Difference]: Without dead ends: 3058 [2020-10-21 21:31:07,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-21 21:31:07,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2020-10-21 21:31:07,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 2130. [2020-10-21 21:31:07,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2130 states. [2020-10-21 21:31:07,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2130 states to 2130 states and 7633 transitions. [2020-10-21 21:31:07,388 INFO L78 Accepts]: Start accepts. Automaton has 2130 states and 7633 transitions. Word has length 23 [2020-10-21 21:31:07,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:07,389 INFO L481 AbstractCegarLoop]: Abstraction has 2130 states and 7633 transitions. [2020-10-21 21:31:07,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-21 21:31:07,389 INFO L276 IsEmpty]: Start isEmpty. Operand 2130 states and 7633 transitions. [2020-10-21 21:31:07,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 21:31:07,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:07,392 INFO L422 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] [2020-10-21 21:31:07,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-21 21:31:07,392 INFO L429 AbstractCegarLoop]: === Iteration 35 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:31:07,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:07,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1618282095, now seen corresponding path program 2 times [2020-10-21 21:31:07,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:07,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290640879] [2020-10-21 21:31:07,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:07,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:07,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290640879] [2020-10-21 21:31:07,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:31:07,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-21 21:31:07,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936623207] [2020-10-21 21:31:07,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 21:31:07,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:07,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 21:31:07,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-21 21:31:07,577 INFO L87 Difference]: Start difference. First operand 2130 states and 7633 transitions. Second operand 12 states. [2020-10-21 21:31:07,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:07,876 INFO L93 Difference]: Finished difference Result 2799 states and 9853 transitions. [2020-10-21 21:31:07,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-21 21:31:07,877 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-21 21:31:07,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:07,882 INFO L225 Difference]: With dead ends: 2799 [2020-10-21 21:31:07,882 INFO L226 Difference]: Without dead ends: 2682 [2020-10-21 21:31:07,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-21 21:31:07,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2020-10-21 21:31:07,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 1794. [2020-10-21 21:31:07,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1794 states. [2020-10-21 21:31:07,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 6287 transitions. [2020-10-21 21:31:07,908 INFO L78 Accepts]: Start accepts. Automaton has 1794 states and 6287 transitions. Word has length 23 [2020-10-21 21:31:07,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:07,909 INFO L481 AbstractCegarLoop]: Abstraction has 1794 states and 6287 transitions. [2020-10-21 21:31:07,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 21:31:07,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 6287 transitions. [2020-10-21 21:31:07,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-21 21:31:07,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:07,910 INFO L422 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] [2020-10-21 21:31:07,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-21 21:31:07,910 INFO L429 AbstractCegarLoop]: === Iteration 36 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:31:07,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:07,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1881126218, now seen corresponding path program 1 times [2020-10-21 21:31:07,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:07,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299386480] [2020-10-21 21:31:07,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:07,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:07,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299386480] [2020-10-21 21:31:07,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:31:07,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 21:31:07,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559153098] [2020-10-21 21:31:07,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 21:31:07,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:07,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 21:31:07,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-21 21:31:07,938 INFO L87 Difference]: Start difference. First operand 1794 states and 6287 transitions. Second operand 5 states. [2020-10-21 21:31:08,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:08,054 INFO L93 Difference]: Finished difference Result 2298 states and 7732 transitions. [2020-10-21 21:31:08,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 21:31:08,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-21 21:31:08,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:08,059 INFO L225 Difference]: With dead ends: 2298 [2020-10-21 21:31:08,059 INFO L226 Difference]: Without dead ends: 2234 [2020-10-21 21:31:08,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-21 21:31:08,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2020-10-21 21:31:08,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 2113. [2020-10-21 21:31:08,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2113 states. [2020-10-21 21:31:08,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 7288 transitions. [2020-10-21 21:31:08,091 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 7288 transitions. Word has length 24 [2020-10-21 21:31:08,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:08,092 INFO L481 AbstractCegarLoop]: Abstraction has 2113 states and 7288 transitions. [2020-10-21 21:31:08,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 21:31:08,092 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 7288 transitions. [2020-10-21 21:31:08,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-21 21:31:08,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:08,094 INFO L422 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] [2020-10-21 21:31:08,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-21 21:31:08,094 INFO L429 AbstractCegarLoop]: === Iteration 37 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:31:08,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:08,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1170381166, now seen corresponding path program 2 times [2020-10-21 21:31:08,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:08,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911272319] [2020-10-21 21:31:08,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:08,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:08,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911272319] [2020-10-21 21:31:08,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:31:08,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 21:31:08,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058936302] [2020-10-21 21:31:08,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-21 21:31:08,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:08,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-21 21:31:08,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-21 21:31:08,139 INFO L87 Difference]: Start difference. First operand 2113 states and 7288 transitions. Second operand 6 states. [2020-10-21 21:31:08,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:08,291 INFO L93 Difference]: Finished difference Result 2610 states and 8724 transitions. [2020-10-21 21:31:08,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 21:31:08,292 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-21 21:31:08,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:08,297 INFO L225 Difference]: With dead ends: 2610 [2020-10-21 21:31:08,297 INFO L226 Difference]: Without dead ends: 2546 [2020-10-21 21:31:08,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-21 21:31:08,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2020-10-21 21:31:08,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 2106. [2020-10-21 21:31:08,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2106 states. [2020-10-21 21:31:08,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 7279 transitions. [2020-10-21 21:31:08,334 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 7279 transitions. Word has length 24 [2020-10-21 21:31:08,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:08,335 INFO L481 AbstractCegarLoop]: Abstraction has 2106 states and 7279 transitions. [2020-10-21 21:31:08,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-21 21:31:08,335 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 7279 transitions. [2020-10-21 21:31:08,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-21 21:31:08,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:08,336 INFO L422 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] [2020-10-21 21:31:08,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-21 21:31:08,337 INFO L429 AbstractCegarLoop]: === Iteration 38 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:31:08,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:08,337 INFO L82 PathProgramCache]: Analyzing trace with hash -705054292, now seen corresponding path program 3 times [2020-10-21 21:31:08,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:08,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990370328] [2020-10-21 21:31:08,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:08,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:08,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990370328] [2020-10-21 21:31:08,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:31:08,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 21:31:08,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575957467] [2020-10-21 21:31:08,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-21 21:31:08,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:08,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-21 21:31:08,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-21 21:31:08,406 INFO L87 Difference]: Start difference. First operand 2106 states and 7279 transitions. Second operand 8 states. [2020-10-21 21:31:08,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:08,648 INFO L93 Difference]: Finished difference Result 2590 states and 8691 transitions. [2020-10-21 21:31:08,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-21 21:31:08,648 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-10-21 21:31:08,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:08,655 INFO L225 Difference]: With dead ends: 2590 [2020-10-21 21:31:08,655 INFO L226 Difference]: Without dead ends: 2526 [2020-10-21 21:31:08,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-21 21:31:08,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2526 states. [2020-10-21 21:31:08,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2526 to 2093. [2020-10-21 21:31:08,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2093 states. [2020-10-21 21:31:08,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2093 states to 2093 states and 7255 transitions. [2020-10-21 21:31:08,717 INFO L78 Accepts]: Start accepts. Automaton has 2093 states and 7255 transitions. Word has length 24 [2020-10-21 21:31:08,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:08,717 INFO L481 AbstractCegarLoop]: Abstraction has 2093 states and 7255 transitions. [2020-10-21 21:31:08,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-21 21:31:08,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2093 states and 7255 transitions. [2020-10-21 21:31:08,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-21 21:31:08,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:08,721 INFO L422 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] [2020-10-21 21:31:08,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-21 21:31:08,722 INFO L429 AbstractCegarLoop]: === Iteration 39 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:31:08,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:08,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1595569430, now seen corresponding path program 1 times [2020-10-21 21:31:08,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:08,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309831956] [2020-10-21 21:31:08,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:08,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:08,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309831956] [2020-10-21 21:31:08,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:31:08,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-21 21:31:08,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987394303] [2020-10-21 21:31:08,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-21 21:31:08,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:08,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-21 21:31:08,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-21 21:31:08,878 INFO L87 Difference]: Start difference. First operand 2093 states and 7255 transitions. Second operand 10 states. [2020-10-21 21:31:09,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:09,218 INFO L93 Difference]: Finished difference Result 2558 states and 8708 transitions. [2020-10-21 21:31:09,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-21 21:31:09,219 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-21 21:31:09,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:09,227 INFO L225 Difference]: With dead ends: 2558 [2020-10-21 21:31:09,227 INFO L226 Difference]: Without dead ends: 2534 [2020-10-21 21:31:09,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:31:09,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2534 states. [2020-10-21 21:31:09,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2534 to 2093. [2020-10-21 21:31:09,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2093 states. [2020-10-21 21:31:09,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2093 states to 2093 states and 7255 transitions. [2020-10-21 21:31:09,334 INFO L78 Accepts]: Start accepts. Automaton has 2093 states and 7255 transitions. Word has length 24 [2020-10-21 21:31:09,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:09,335 INFO L481 AbstractCegarLoop]: Abstraction has 2093 states and 7255 transitions. [2020-10-21 21:31:09,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-21 21:31:09,335 INFO L276 IsEmpty]: Start isEmpty. Operand 2093 states and 7255 transitions. [2020-10-21 21:31:09,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-21 21:31:09,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:09,339 INFO L422 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] [2020-10-21 21:31:09,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-21 21:31:09,339 INFO L429 AbstractCegarLoop]: === Iteration 40 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:31:09,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:09,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1636815590, now seen corresponding path program 2 times [2020-10-21 21:31:09,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:09,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511341663] [2020-10-21 21:31:09,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:09,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:09,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:09,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511341663] [2020-10-21 21:31:09,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:31:09,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-21 21:31:09,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267813828] [2020-10-21 21:31:09,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 21:31:09,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:09,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 21:31:09,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-21 21:31:09,504 INFO L87 Difference]: Start difference. First operand 2093 states and 7255 transitions. Second operand 11 states. [2020-10-21 21:31:09,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:09,934 INFO L93 Difference]: Finished difference Result 3188 states and 11079 transitions. [2020-10-21 21:31:09,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-21 21:31:09,934 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24 [2020-10-21 21:31:09,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:09,941 INFO L225 Difference]: With dead ends: 3188 [2020-10-21 21:31:09,942 INFO L226 Difference]: Without dead ends: 3164 [2020-10-21 21:31:09,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-10-21 21:31:09,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3164 states. [2020-10-21 21:31:09,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3164 to 1733. [2020-10-21 21:31:09,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2020-10-21 21:31:09,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 5933 transitions. [2020-10-21 21:31:09,984 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 5933 transitions. Word has length 24 [2020-10-21 21:31:09,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:09,985 INFO L481 AbstractCegarLoop]: Abstraction has 1733 states and 5933 transitions. [2020-10-21 21:31:09,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 21:31:09,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 5933 transitions. [2020-10-21 21:31:09,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-21 21:31:09,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:09,987 INFO L422 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] [2020-10-21 21:31:09,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-21 21:31:09,988 INFO L429 AbstractCegarLoop]: === Iteration 41 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:31:09,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:09,988 INFO L82 PathProgramCache]: Analyzing trace with hash -645522248, now seen corresponding path program 4 times [2020-10-21 21:31:09,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:09,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792730007] [2020-10-21 21:31:09,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:10,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:10,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792730007] [2020-10-21 21:31:10,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:31:10,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-21 21:31:10,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473914435] [2020-10-21 21:31:10,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-21 21:31:10,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:10,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-21 21:31:10,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-21 21:31:10,095 INFO L87 Difference]: Start difference. First operand 1733 states and 5933 transitions. Second operand 10 states. [2020-10-21 21:31:10,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:10,351 INFO L93 Difference]: Finished difference Result 2175 states and 7230 transitions. [2020-10-21 21:31:10,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-21 21:31:10,352 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-21 21:31:10,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:10,357 INFO L225 Difference]: With dead ends: 2175 [2020-10-21 21:31:10,357 INFO L226 Difference]: Without dead ends: 2111 [2020-10-21 21:31:10,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2020-10-21 21:31:10,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2111 states. [2020-10-21 21:31:10,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2111 to 1733. [2020-10-21 21:31:10,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2020-10-21 21:31:10,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 5933 transitions. [2020-10-21 21:31:10,380 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 5933 transitions. Word has length 24 [2020-10-21 21:31:10,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:10,380 INFO L481 AbstractCegarLoop]: Abstraction has 1733 states and 5933 transitions. [2020-10-21 21:31:10,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-21 21:31:10,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 5933 transitions. [2020-10-21 21:31:10,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-21 21:31:10,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:10,382 INFO L422 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] [2020-10-21 21:31:10,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-21 21:31:10,382 INFO L429 AbstractCegarLoop]: === Iteration 42 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:31:10,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:10,382 INFO L82 PathProgramCache]: Analyzing trace with hash -651468708, now seen corresponding path program 5 times [2020-10-21 21:31:10,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:10,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307064073] [2020-10-21 21:31:10,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:10,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:10,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307064073] [2020-10-21 21:31:10,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:31:10,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-21 21:31:10,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142461665] [2020-10-21 21:31:10,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 21:31:10,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:10,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 21:31:10,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-21 21:31:10,551 INFO L87 Difference]: Start difference. First operand 1733 states and 5933 transitions. Second operand 12 states. [2020-10-21 21:31:10,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:10,827 INFO L93 Difference]: Finished difference Result 2400 states and 7955 transitions. [2020-10-21 21:31:10,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-21 21:31:10,827 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2020-10-21 21:31:10,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:10,832 INFO L225 Difference]: With dead ends: 2400 [2020-10-21 21:31:10,832 INFO L226 Difference]: Without dead ends: 2272 [2020-10-21 21:31:10,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2020-10-21 21:31:10,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2272 states. [2020-10-21 21:31:10,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2272 to 1669. [2020-10-21 21:31:10,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1669 states. [2020-10-21 21:31:10,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 5719 transitions. [2020-10-21 21:31:10,864 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 5719 transitions. Word has length 24 [2020-10-21 21:31:10,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:10,865 INFO L481 AbstractCegarLoop]: Abstraction has 1669 states and 5719 transitions. [2020-10-21 21:31:10,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 21:31:10,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 5719 transitions. [2020-10-21 21:31:10,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-21 21:31:10,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:10,867 INFO L422 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] [2020-10-21 21:31:10,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-21 21:31:10,867 INFO L429 AbstractCegarLoop]: === Iteration 43 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:31:10,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:10,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1516154866, now seen corresponding path program 6 times [2020-10-21 21:31:10,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:10,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372951737] [2020-10-21 21:31:10,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:10,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:10,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372951737] [2020-10-21 21:31:10,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:31:10,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-21 21:31:10,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458819827] [2020-10-21 21:31:10,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-21 21:31:10,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:10,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-21 21:31:10,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-21 21:31:10,967 INFO L87 Difference]: Start difference. First operand 1669 states and 5719 transitions. Second operand 10 states. [2020-10-21 21:31:11,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:11,212 INFO L93 Difference]: Finished difference Result 2576 states and 8317 transitions. [2020-10-21 21:31:11,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-21 21:31:11,212 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-21 21:31:11,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:11,217 INFO L225 Difference]: With dead ends: 2576 [2020-10-21 21:31:11,218 INFO L226 Difference]: Without dead ends: 2512 [2020-10-21 21:31:11,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:31:11,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2512 states. [2020-10-21 21:31:11,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2512 to 1489. [2020-10-21 21:31:11,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1489 states. [2020-10-21 21:31:11,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 5033 transitions. [2020-10-21 21:31:11,240 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 5033 transitions. Word has length 24 [2020-10-21 21:31:11,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:11,240 INFO L481 AbstractCegarLoop]: Abstraction has 1489 states and 5033 transitions. [2020-10-21 21:31:11,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-21 21:31:11,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 5033 transitions. [2020-10-21 21:31:11,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-21 21:31:11,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:11,243 INFO L422 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] [2020-10-21 21:31:11,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-21 21:31:11,243 INFO L429 AbstractCegarLoop]: === Iteration 44 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:31:11,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:11,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1490897436, now seen corresponding path program 1 times [2020-10-21 21:31:11,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:11,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490464228] [2020-10-21 21:31:11,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:11,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:11,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490464228] [2020-10-21 21:31:11,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:31:11,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-21 21:31:11,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121487167] [2020-10-21 21:31:11,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-21 21:31:11,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:11,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-21 21:31:11,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-21 21:31:11,345 INFO L87 Difference]: Start difference. First operand 1489 states and 5033 transitions. Second operand 10 states. [2020-10-21 21:31:11,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:11,609 INFO L93 Difference]: Finished difference Result 2094 states and 6830 transitions. [2020-10-21 21:31:11,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-21 21:31:11,609 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-10-21 21:31:11,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:11,614 INFO L225 Difference]: With dead ends: 2094 [2020-10-21 21:31:11,614 INFO L226 Difference]: Without dead ends: 2072 [2020-10-21 21:31:11,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:31:11,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2020-10-21 21:31:11,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 1485. [2020-10-21 21:31:11,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1485 states. [2020-10-21 21:31:11,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 5028 transitions. [2020-10-21 21:31:11,638 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 5028 transitions. Word has length 26 [2020-10-21 21:31:11,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:11,638 INFO L481 AbstractCegarLoop]: Abstraction has 1485 states and 5028 transitions. [2020-10-21 21:31:11,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-21 21:31:11,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 5028 transitions. [2020-10-21 21:31:11,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-21 21:31:11,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:11,640 INFO L422 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] [2020-10-21 21:31:11,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-21 21:31:11,641 INFO L429 AbstractCegarLoop]: === Iteration 45 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:31:11,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:11,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1992969286, now seen corresponding path program 2 times [2020-10-21 21:31:11,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:11,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262226897] [2020-10-21 21:31:11,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:11,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:11,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262226897] [2020-10-21 21:31:11,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:31:11,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-21 21:31:11,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440926743] [2020-10-21 21:31:11,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 21:31:11,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:11,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 21:31:11,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-21 21:31:11,803 INFO L87 Difference]: Start difference. First operand 1485 states and 5028 transitions. Second operand 12 states. [2020-10-21 21:31:12,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:12,172 INFO L93 Difference]: Finished difference Result 1538 states and 4992 transitions. [2020-10-21 21:31:12,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-21 21:31:12,172 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-10-21 21:31:12,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:12,178 INFO L225 Difference]: With dead ends: 1538 [2020-10-21 21:31:12,178 INFO L226 Difference]: Without dead ends: 1494 [2020-10-21 21:31:12,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-21 21:31:12,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2020-10-21 21:31:12,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 885. [2020-10-21 21:31:12,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 885 states. [2020-10-21 21:31:12,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 3033 transitions. [2020-10-21 21:31:12,198 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 3033 transitions. Word has length 26 [2020-10-21 21:31:12,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:12,199 INFO L481 AbstractCegarLoop]: Abstraction has 885 states and 3033 transitions. [2020-10-21 21:31:12,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 21:31:12,199 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 3033 transitions. [2020-10-21 21:31:12,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-21 21:31:12,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:12,208 INFO L422 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, 1, 1, 1, 1, 1] [2020-10-21 21:31:12,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-21 21:31:12,208 INFO L429 AbstractCegarLoop]: === Iteration 46 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:31:12,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:12,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1378312331, now seen corresponding path program 1 times [2020-10-21 21:31:12,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:12,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486457870] [2020-10-21 21:31:12,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:12,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:12,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486457870] [2020-10-21 21:31:12,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:31:12,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-21 21:31:12,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365449061] [2020-10-21 21:31:12,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-21 21:31:12,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:12,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-21 21:31:12,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-21 21:31:12,282 INFO L87 Difference]: Start difference. First operand 885 states and 3033 transitions. Second operand 8 states. [2020-10-21 21:31:12,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:12,422 INFO L93 Difference]: Finished difference Result 885 states and 3029 transitions. [2020-10-21 21:31:12,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-21 21:31:12,422 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-10-21 21:31:12,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:12,424 INFO L225 Difference]: With dead ends: 885 [2020-10-21 21:31:12,424 INFO L226 Difference]: Without dead ends: 867 [2020-10-21 21:31:12,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-21 21:31:12,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2020-10-21 21:31:12,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 867. [2020-10-21 21:31:12,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2020-10-21 21:31:12,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 2960 transitions. [2020-10-21 21:31:12,442 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 2960 transitions. Word has length 41 [2020-10-21 21:31:12,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:12,442 INFO L481 AbstractCegarLoop]: Abstraction has 867 states and 2960 transitions. [2020-10-21 21:31:12,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-21 21:31:12,443 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 2960 transitions. [2020-10-21 21:31:12,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-21 21:31:12,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:12,445 INFO L422 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, 1, 1, 1, 1, 1] [2020-10-21 21:31:12,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-21 21:31:12,445 INFO L429 AbstractCegarLoop]: === Iteration 47 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:31:12,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:12,446 INFO L82 PathProgramCache]: Analyzing trace with hash 797706649, now seen corresponding path program 1 times [2020-10-21 21:31:12,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:12,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850388130] [2020-10-21 21:31:12,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:12,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:12,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850388130] [2020-10-21 21:31:12,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:31:12,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-21 21:31:12,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190589028] [2020-10-21 21:31:12,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-21 21:31:12,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:12,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-21 21:31:12,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-21 21:31:12,539 INFO L87 Difference]: Start difference. First operand 867 states and 2960 transitions. Second operand 8 states. [2020-10-21 21:31:12,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:12,696 INFO L93 Difference]: Finished difference Result 867 states and 2956 transitions. [2020-10-21 21:31:12,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-21 21:31:12,696 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-10-21 21:31:12,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:12,699 INFO L225 Difference]: With dead ends: 867 [2020-10-21 21:31:12,699 INFO L226 Difference]: Without dead ends: 819 [2020-10-21 21:31:12,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-21 21:31:12,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2020-10-21 21:31:12,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 819. [2020-10-21 21:31:12,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2020-10-21 21:31:12,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 2784 transitions. [2020-10-21 21:31:12,719 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 2784 transitions. Word has length 41 [2020-10-21 21:31:12,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:12,719 INFO L481 AbstractCegarLoop]: Abstraction has 819 states and 2784 transitions. [2020-10-21 21:31:12,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-21 21:31:12,719 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 2784 transitions. [2020-10-21 21:31:12,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-21 21:31:12,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:12,722 INFO L422 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, 1, 1, 1, 1, 1] [2020-10-21 21:31:12,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-21 21:31:12,723 INFO L429 AbstractCegarLoop]: === Iteration 48 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:31:12,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:12,723 INFO L82 PathProgramCache]: Analyzing trace with hash -179469333, now seen corresponding path program 1 times [2020-10-21 21:31:12,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:12,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300849363] [2020-10-21 21:31:12,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:12,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:12,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300849363] [2020-10-21 21:31:12,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:31:12,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-21 21:31:12,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494134075] [2020-10-21 21:31:12,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-21 21:31:12,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:12,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-21 21:31:12,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-21 21:31:12,871 INFO L87 Difference]: Start difference. First operand 819 states and 2784 transitions. Second operand 10 states. [2020-10-21 21:31:13,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:13,021 INFO L93 Difference]: Finished difference Result 819 states and 2776 transitions. [2020-10-21 21:31:13,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-21 21:31:13,021 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-10-21 21:31:13,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:13,023 INFO L225 Difference]: With dead ends: 819 [2020-10-21 21:31:13,023 INFO L226 Difference]: Without dead ends: 735 [2020-10-21 21:31:13,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-10-21 21:31:13,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2020-10-21 21:31:13,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 735. [2020-10-21 21:31:13,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 735 states. [2020-10-21 21:31:13,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 2470 transitions. [2020-10-21 21:31:13,036 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 2470 transitions. Word has length 41 [2020-10-21 21:31:13,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:13,036 INFO L481 AbstractCegarLoop]: Abstraction has 735 states and 2470 transitions. [2020-10-21 21:31:13,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-21 21:31:13,037 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 2470 transitions. [2020-10-21 21:31:13,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-21 21:31:13,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:13,039 INFO L422 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, 1, 1, 1, 1, 1] [2020-10-21 21:31:13,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-21 21:31:13,040 INFO L429 AbstractCegarLoop]: === Iteration 49 === [thread0Err0INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err3INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-10-21 21:31:13,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:13,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1631305437, now seen corresponding path program 1 times [2020-10-21 21:31:13,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:13,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607367797] [2020-10-21 21:31:13,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 21:31:13,074 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 21:31:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 21:31:13,088 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 21:31:13,126 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 21:31:13,126 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 21:31:13,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-21 21:31:13,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 09:31:13 BasicIcfg [2020-10-21 21:31:13,221 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 21:31:13,223 INFO L168 Benchmark]: Toolchain (without parser) took 27236.54 ms. Allocated memory was 145.8 MB in the beginning and 945.8 MB in the end (delta: 800.1 MB). Free memory was 99.7 MB in the beginning and 710.8 MB in the end (delta: -611.1 MB). Peak memory consumption was 188.9 MB. Max. memory is 7.1 GB. [2020-10-21 21:31:13,224 INFO L168 Benchmark]: CDTParser took 3.12 ms. Allocated memory is still 145.8 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-21 21:31:13,224 INFO L168 Benchmark]: CACSL2BoogieTranslator took 910.97 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 98.7 MB in the beginning and 116.8 MB in the end (delta: -18.1 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. [2020-10-21 21:31:13,224 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.78 ms. Allocated memory is still 202.9 MB. Free memory was 116.8 MB in the beginning and 114.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-21 21:31:13,225 INFO L168 Benchmark]: Boogie Preprocessor took 28.74 ms. Allocated memory is still 202.9 MB. Free memory was 114.7 MB in the beginning and 112.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-21 21:31:13,225 INFO L168 Benchmark]: RCFGBuilder took 543.18 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 112.6 MB in the beginning and 201.0 MB in the end (delta: -88.4 MB). Peak memory consumption was 31.1 MB. Max. memory is 7.1 GB. [2020-10-21 21:31:13,226 INFO L168 Benchmark]: TraceAbstraction took 25692.29 ms. Allocated memory was 234.4 MB in the beginning and 945.8 MB in the end (delta: 711.5 MB). Free memory was 201.0 MB in the beginning and 710.8 MB in the end (delta: -509.8 MB). Peak memory consumption was 201.7 MB. Max. memory is 7.1 GB. [2020-10-21 21:31:13,228 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.12 ms. Allocated memory is still 145.8 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 910.97 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 98.7 MB in the beginning and 116.8 MB in the end (delta: -18.1 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.78 ms. Allocated memory is still 202.9 MB. Free memory was 116.8 MB in the beginning and 114.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.74 ms. Allocated memory is still 202.9 MB. Free memory was 114.7 MB in the beginning and 112.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 543.18 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 112.6 MB in the beginning and 201.0 MB in the end (delta: -88.4 MB). Peak memory consumption was 31.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25692.29 ms. Allocated memory was 234.4 MB in the beginning and 945.8 MB in the end (delta: 711.5 MB). Free memory was 201.0 MB in the beginning and 710.8 MB in the end (delta: -509.8 MB). Peak memory consumption was 201.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 3872 VarBasedMoverChecksPositive, 50 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 1174 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.5s, 180 PlacesBefore, 101 PlacesAfterwards, 252 TransitionsBefore, 173 TransitionsAfterwards, 4628 CoEnabledTransitionPairs, 5 FixpointIterations, 27 TrivialSequentialCompositions, 54 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 89 TotalNumberOfCompositions, 52821 MoverChecksTotal - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1116] 0 char *v; [L1153] 0 pthread_t t; [L1154] FCALL, FORK 0 pthread_create(&t, 0, thread0, 0) VAL [arg={0:0}, v={0:0}] [L1155] 0 \read(t) VAL [arg={0:0}, v={0:0}] [L1138] 1 pthread_t t1, t2, t3, t4, t5; [L1139] FCALL, FORK 1 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, t1={13:0}, t2={14:0}, t3={11:0}, t4={10:0}, t5={6:0}, v={0:0}] [L1140] 1 \read(t1) VAL [\read(t1)=0, arg={0:0}, arg={0:0}, arg={0:0}, t1={13:0}, t2={14:0}, t3={11:0}, t4={10:0}, t5={6:0}, v={0:0}] [L1119] 2 v = malloc(sizeof(char)) [L1120] 2 return 0; [L1140] FCALL, JOIN 2 pthread_join(t1, 0) VAL [\read(t1)=0, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, malloc(sizeof(char))={-1:0}, t1={13:0}, t2={14:0}, t3={11:0}, t4={10:0}, t5={6:0}, v={-1:0}] [L1141] FCALL, FORK 1 pthread_create(&t2, 0, thread2, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, malloc(sizeof(char))={-1:0}, t1={13:0}, t2={14:0}, t3={11:0}, t4={10:0}, t5={6:0}, v={-1:0}] [L1142] FCALL, FORK 1 pthread_create(&t3, 0, thread3, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, malloc(sizeof(char))={-1:0}, t1={13:0}, t2={14:0}, t3={11:0}, t4={10:0}, t5={6:0}, v={-1:0}] [L1125] 3 v[0] = 'X' [L1127] 3 return 0; [L1143] FCALL, FORK 1 pthread_create(&t4, 0, thread2, 0) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, malloc(sizeof(char))={-1:0}, t1={13:0}, t2={14:0}, t3={11:0}, t4={10:0}, t5={6:0}, v={-1:0}] [L1144] FCALL, FORK 1 pthread_create(&t5, 0, thread2, 0) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, malloc(sizeof(char))={-1:0}, t1={13:0}, t2={14:0}, t3={11:0}, t4={10:0}, t5={6:0}, v={-1:0}] [L1145] 1 \read(t2) VAL [\read(t2)=1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, malloc(sizeof(char))={-1:0}, t1={13:0}, t2={14:0}, t3={11:0}, t4={10:0}, t5={6:0}, v={-1:0}] [L1145] FCALL, JOIN 3 pthread_join(t2, 0) VAL [\read(t2)=1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, malloc(sizeof(char))={-1:0}, t1={13:0}, t2={14:0}, t3={11:0}, t4={10:0}, t5={6:0}, v={-1:0}] [L1146] 1 \read(t3) VAL [\read(t3)=2, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, malloc(sizeof(char))={-1:0}, t1={13:0}, t2={14:0}, t3={11:0}, t4={10:0}, t5={6:0}, v={-1:0}] [L1125] 6 v[0] = 'X' [L1127] 6 return 0; [L1125] 5 v[0] = 'X' [L1127] 5 return 0; [L1132] 4 v[0] = 'Y' [L1134] 4 return 0; [L1146] FCALL, JOIN 4 pthread_join(t3, 0) VAL [\read(t3)=2, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, malloc(sizeof(char))={-1:0}, t1={13:0}, t2={14:0}, t3={11:0}, t4={10:0}, t5={6:0}, v={-1:0}] [L1147] 1 \read(t4) VAL [\read(t4)=3, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, malloc(sizeof(char))={-1:0}, t1={13:0}, t2={14:0}, t3={11:0}, t4={10:0}, t5={6:0}, v={-1:0}] [L1147] FCALL, JOIN 5 pthread_join(t4, 0) VAL [\read(t4)=3, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, malloc(sizeof(char))={-1:0}, t1={13:0}, t2={14:0}, t3={11:0}, t4={10:0}, t5={6:0}, v={-1:0}] [L1148] 1 \read(t5) VAL [\read(t5)=4, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, malloc(sizeof(char))={-1:0}, t1={13:0}, t2={14:0}, t3={11:0}, t4={10:0}, t5={6:0}, v={-1:0}] [L1148] FCALL, JOIN 6 pthread_join(t5, 0) VAL [\read(t5)=4, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, malloc(sizeof(char))={-1:0}, t1={13:0}, t2={14:0}, t3={11:0}, t4={10:0}, t5={6:0}, v={-1:0}] [L1149] 1 return 0; [L1149] 1 return 0; [L1149] 1 return 0; [L1149] 1 return 0; [L1149] 1 return 0; [L1149] 1 return 0; [L1155] FCALL, JOIN 1 pthread_join(t, 0) VAL [\result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, malloc(sizeof(char))={-1:0}, v={-1:0}] [L1156] 0 v[0] [L1115] COND TRUE 0 !expression [L12] COND FALSE 0 !(0) [L12] 0 __assert_fail ("0", "singleton.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [\result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, malloc(sizeof(char))={-1:0}, v={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 100 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 25.3s, OverallIterations: 49, TraceHistogramMax: 1, AutomataDifference: 12.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 5020 SDtfs, 9342 SDslu, 12893 SDs, 0 SdLazy, 7709 SolverSat, 1105 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 536 GetRequests, 63 SyntacticMatches, 3 SemanticMatches, 470 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4277occurred in iteration=21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.9s AutomataMinimizationTime, 48 MinimizatonAttempts, 43479 StatesRemovedByMinimization, 45 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 1072 NumberOfCodeBlocks, 1072 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 983 ConstructedInterpolants, 0 QuantifiedInterpolants, 217984 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 48 InterpolantComputations, 48 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...