/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-lit/sssc12.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:23:21,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:23:21,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:23:21,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 11:23:21,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 11:23:21,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 11:23:21,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 11:23:21,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 11:23:21,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 11:23:21,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 11:23:21,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 11:23:21,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 11:23:21,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:23:21,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:23:21,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:23:21,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:23:21,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:23:21,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:23:21,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:23:21,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:23:21,363 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:23:21,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:23:21,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:23:21,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:23:21,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 11:23:21,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 11:23:21,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 11:23:21,373 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 11:23:21,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 11:23:21,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 11:23:21,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 11:23:21,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 11:23:21,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 11:23:21,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:23:21,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:23:21,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:23:21,378 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-16 11:23:21,405 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:23:21,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:23:21,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:23:21,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:23:21,407 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:23:21,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:23:21,407 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:23:21,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:23:21,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:23:21,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:23:21,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:23:21,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:23:21,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:23:21,409 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:23:21,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:23:21,409 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:23:21,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:23:21,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:23:21,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:23:21,410 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:23:21,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:23:21,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:23:21,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:23:21,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 11:23:21,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:23:21,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:23:21,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:23:21,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:23:21,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 11:23:21,412 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 11:23:21,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:23:21,736 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:23:21,741 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:23:21,742 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:23:21,745 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:23:21,746 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/sssc12.i [2020-10-16 11:23:21,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9414d251/b458ea2a2ff44ea2a6b597447aeb8628/FLAG2577c3c76 [2020-10-16 11:23:22,397 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:23:22,398 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-lit/sssc12.i [2020-10-16 11:23:22,421 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9414d251/b458ea2a2ff44ea2a6b597447aeb8628/FLAG2577c3c76 [2020-10-16 11:23:22,680 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9414d251/b458ea2a2ff44ea2a6b597447aeb8628 [2020-10-16 11:23:22,690 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:23:22,692 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:23:22,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:23:22,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:23:22,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:23:22,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:23:22" (1/1) ... [2020-10-16 11:23:22,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e07f4ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:22, skipping insertion in model container [2020-10-16 11:23:22,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:23:22" (1/1) ... [2020-10-16 11:23:22,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:23:22,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:23:23,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:23:23,368 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:23:23,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:23:23,589 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:23:23,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:23 WrapperNode [2020-10-16 11:23:23,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:23:23,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:23:23,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:23:23,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:23:23,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:23" (1/1) ... [2020-10-16 11:23:23,648 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:23" (1/1) ... [2020-10-16 11:23:23,681 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:23:23,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:23:23,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:23:23,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:23:23,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:23" (1/1) ... [2020-10-16 11:23:23,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:23" (1/1) ... [2020-10-16 11:23:23,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:23" (1/1) ... [2020-10-16 11:23:23,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:23" (1/1) ... [2020-10-16 11:23:23,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:23" (1/1) ... [2020-10-16 11:23:23,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:23" (1/1) ... [2020-10-16 11:23:23,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:23" (1/1) ... [2020-10-16 11:23:23,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:23:23,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:23:23,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:23:23,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:23:23,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:23,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 11:23:23,793 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2020-10-16 11:23:23,793 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2020-10-16 11:23:23,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:23:23,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:23:23,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 11:23:23,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:23:23,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-16 11:23:23,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:23:23,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:23:23,799 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 11:23:24,242 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:23:24,242 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-16 11:23:24,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:23:24 BoogieIcfgContainer [2020-10-16 11:23:24,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:23:24,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:23:24,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:23:24,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:23:24,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:23:22" (1/3) ... [2020-10-16 11:23:24,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c4e6d84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:23:24, skipping insertion in model container [2020-10-16 11:23:24,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:23" (2/3) ... [2020-10-16 11:23:24,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c4e6d84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:23:24, skipping insertion in model container [2020-10-16 11:23:24,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:23:24" (3/3) ... [2020-10-16 11:23:24,258 INFO L111 eAbstractionObserver]: Analyzing ICFG sssc12.i [2020-10-16 11:23:24,270 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:23:24,270 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:23:24,277 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 11:23:24,278 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:23:24,304 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,305 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,305 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,305 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,306 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,306 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,306 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,306 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,307 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,307 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,307 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,308 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,308 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,308 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,309 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,309 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,309 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,309 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,309 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,310 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,310 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,310 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,311 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,311 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,311 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,311 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,312 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,312 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,312 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,313 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,313 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,317 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,318 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,318 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,318 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,318 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,319 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,319 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,319 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,319 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,320 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:24,324 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:23:24,338 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-16 11:23:24,362 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:23:24,362 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:23:24,362 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:23:24,363 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:23:24,363 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:23:24,363 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:23:24,363 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:23:24,363 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:23:24,393 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:23:24,396 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 61 transitions, 127 flow [2020-10-16 11:23:24,399 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 61 transitions, 127 flow [2020-10-16 11:23:24,401 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 58 places, 61 transitions, 127 flow [2020-10-16 11:23:24,440 INFO L129 PetriNetUnfolder]: 7/70 cut-off events. [2020-10-16 11:23:24,441 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 11:23:24,447 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 70 events. 7/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 36. Up to 4 conditions per place. [2020-10-16 11:23:24,452 INFO L117 LiptonReduction]: Number of co-enabled transitions 572 [2020-10-16 11:23:25,677 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-10-16 11:23:25,843 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2020-10-16 11:23:26,149 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-16 11:23:26,231 INFO L132 LiptonReduction]: Checked pairs total: 458 [2020-10-16 11:23:26,232 INFO L134 LiptonReduction]: Total number of compositions: 64 [2020-10-16 11:23:26,238 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 12 places, 10 transitions, 25 flow [2020-10-16 11:23:26,246 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 24 states. [2020-10-16 11:23:26,248 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-16 11:23:26,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-16 11:23:26,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:26,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 11:23:26,255 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:26,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:26,261 INFO L82 PathProgramCache]: Analyzing trace with hash 293090759, now seen corresponding path program 1 times [2020-10-16 11:23:26,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:26,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959503349] [2020-10-16 11:23:26,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:26,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:26,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959503349] [2020-10-16 11:23:26,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:26,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:23:26,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105354282] [2020-10-16 11:23:26,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:23:26,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:26,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:23:26,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:23:26,542 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2020-10-16 11:23:26,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:26,582 INFO L93 Difference]: Finished difference Result 27 states and 45 transitions. [2020-10-16 11:23:26,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:23:26,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-10-16 11:23:26,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:26,597 INFO L225 Difference]: With dead ends: 27 [2020-10-16 11:23:26,597 INFO L226 Difference]: Without dead ends: 27 [2020-10-16 11:23:26,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:23:26,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-16 11:23:26,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2020-10-16 11:23:26,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-16 11:23:26,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 42 transitions. [2020-10-16 11:23:26,640 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 42 transitions. Word has length 5 [2020-10-16 11:23:26,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:26,640 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 42 transitions. [2020-10-16 11:23:26,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:23:26,641 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 42 transitions. [2020-10-16 11:23:26,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-16 11:23:26,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:26,642 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 11:23:26,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 11:23:26,642 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:26,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:26,643 INFO L82 PathProgramCache]: Analyzing trace with hash 495879514, now seen corresponding path program 1 times [2020-10-16 11:23:26,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:26,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578910102] [2020-10-16 11:23:26,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:26,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:26,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:26,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578910102] [2020-10-16 11:23:26,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358333976] [2020-10-16 11:23:26,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:23:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:26,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-16 11:23:26,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:26,896 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 2, 1] term [2020-10-16 11:23:26,896 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 11:23:26,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:26,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:26,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2020-10-16 11:23:26,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602711636] [2020-10-16 11:23:26,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:23:26,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:26,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:23:26,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:26,925 INFO L87 Difference]: Start difference. First operand 23 states and 42 transitions. Second operand 7 states. [2020-10-16 11:23:27,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:27,067 INFO L93 Difference]: Finished difference Result 31 states and 52 transitions. [2020-10-16 11:23:27,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:23:27,068 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2020-10-16 11:23:27,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:27,069 INFO L225 Difference]: With dead ends: 31 [2020-10-16 11:23:27,069 INFO L226 Difference]: Without dead ends: 31 [2020-10-16 11:23:27,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:23:27,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-16 11:23:27,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 15. [2020-10-16 11:23:27,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-16 11:23:27,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 24 transitions. [2020-10-16 11:23:27,075 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 24 transitions. Word has length 6 [2020-10-16 11:23:27,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:27,075 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 24 transitions. [2020-10-16 11:23:27,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:23:27,076 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 24 transitions. [2020-10-16 11:23:27,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-16 11:23:27,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:27,077 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-10-16 11:23:27,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-16 11:23:27,278 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:27,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:27,278 INFO L82 PathProgramCache]: Analyzing trace with hash 495744146, now seen corresponding path program 1 times [2020-10-16 11:23:27,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:27,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48350760] [2020-10-16 11:23:27,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:23:27,297 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:23:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:23:27,308 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:23:27,326 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 11:23:27,326 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 11:23:27,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 11:23:27,327 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 11:23:27,328 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 11:23:27,328 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-16 11:23:27,336 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,336 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,336 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,336 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,337 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,337 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,337 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,337 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,338 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,338 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,338 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,338 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,338 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,339 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,339 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,339 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,339 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,339 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,340 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,340 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,340 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,340 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,340 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,340 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,341 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,341 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,341 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,341 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,341 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,342 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,342 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,342 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,343 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,343 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,343 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,343 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,343 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,343 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,344 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,344 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,344 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,344 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,344 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,345 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,345 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,345 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,345 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,345 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,345 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,346 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,346 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,346 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,346 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,346 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,347 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,347 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,347 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,347 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,347 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,348 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,348 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,348 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,349 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,349 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,349 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,349 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,350 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,350 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,350 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,350 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,350 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,351 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,352 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,352 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,353 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,353 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,353 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,353 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,353 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,354 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,354 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,354 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:27,355 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:23:27,356 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 11:23:27,356 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:23:27,356 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:23:27,356 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:23:27,356 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:23:27,356 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:23:27,357 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:23:27,357 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:23:27,357 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:23:27,359 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:23:27,359 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 88 transitions, 188 flow [2020-10-16 11:23:27,359 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 88 transitions, 188 flow [2020-10-16 11:23:27,360 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 83 places, 88 transitions, 188 flow [2020-10-16 11:23:27,385 INFO L129 PetriNetUnfolder]: 12/107 cut-off events. [2020-10-16 11:23:27,385 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 11:23:27,386 INFO L80 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 107 events. 12/107 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 223 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 71. Up to 6 conditions per place. [2020-10-16 11:23:27,390 INFO L117 LiptonReduction]: Number of co-enabled transitions 2548 [2020-10-16 11:23:29,172 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-16 11:23:29,241 INFO L132 LiptonReduction]: Checked pairs total: 5928 [2020-10-16 11:23:29,241 INFO L134 LiptonReduction]: Total number of compositions: 79 [2020-10-16 11:23:29,241 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 27 transitions, 66 flow [2020-10-16 11:23:29,266 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 445 states. [2020-10-16 11:23:29,266 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states. [2020-10-16 11:23:29,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-16 11:23:29,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:29,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:29,268 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:29,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:29,268 INFO L82 PathProgramCache]: Analyzing trace with hash -345168823, now seen corresponding path program 1 times [2020-10-16 11:23:29,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:29,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555581787] [2020-10-16 11:23:29,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:29,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:29,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555581787] [2020-10-16 11:23:29,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:29,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:23:29,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211748210] [2020-10-16 11:23:29,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:23:29,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:29,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:23:29,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:29,321 INFO L87 Difference]: Start difference. First operand 445 states. Second operand 3 states. [2020-10-16 11:23:29,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:29,363 INFO L93 Difference]: Finished difference Result 471 states and 1311 transitions. [2020-10-16 11:23:29,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:23:29,364 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-16 11:23:29,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:29,374 INFO L225 Difference]: With dead ends: 471 [2020-10-16 11:23:29,375 INFO L226 Difference]: Without dead ends: 471 [2020-10-16 11:23:29,375 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 [2020-10-16 11:23:29,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-10-16 11:23:29,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 432. [2020-10-16 11:23:29,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2020-10-16 11:23:29,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 1241 transitions. [2020-10-16 11:23:29,454 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 1241 transitions. Word has length 7 [2020-10-16 11:23:29,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:29,455 INFO L481 AbstractCegarLoop]: Abstraction has 432 states and 1241 transitions. [2020-10-16 11:23:29,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:23:29,455 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 1241 transitions. [2020-10-16 11:23:29,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:23:29,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:29,458 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2020-10-16 11:23:29,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 11:23:29,458 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:29,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:29,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1481361204, now seen corresponding path program 1 times [2020-10-16 11:23:29,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:29,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832632838] [2020-10-16 11:23:29,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:23:29,490 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:23:29,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:23:29,506 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:23:29,518 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 11:23:29,519 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 11:23:29,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 11:23:29,519 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 11:23:29,521 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 11:23:29,522 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-16 11:23:29,533 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,533 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,533 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,534 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,534 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,534 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,534 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,535 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,535 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,535 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,535 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,535 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,535 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,536 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,536 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,549 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,550 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,550 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,550 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,550 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,550 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,550 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,550 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,550 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,551 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,551 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,551 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,551 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,551 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,552 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,552 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,553 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,553 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,554 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,554 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,554 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,554 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,554 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,554 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,555 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,555 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,555 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,555 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,555 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,555 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,556 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,556 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,556 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,556 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,556 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,556 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,557 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,557 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,557 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,557 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,557 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,557 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,557 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,558 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,558 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,558 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,558 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,559 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,559 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,559 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,559 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,559 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,559 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,560 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,560 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,560 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,560 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,560 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,560 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,561 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,561 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,561 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,561 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,561 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,561 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,562 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,562 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,562 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,562 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,562 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,562 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,563 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,563 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,563 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,563 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,563 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,564 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,564 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,564 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,564 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,565 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,565 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,565 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,565 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,565 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,565 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,566 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,566 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,567 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,568 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,568 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,568 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,568 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,568 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,568 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,569 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,569 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,569 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,570 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,570 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,571 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,571 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,571 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,571 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,571 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,571 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,571 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,572 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:29,573 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:23:29,573 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 11:23:29,574 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:23:29,574 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:23:29,574 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:23:29,574 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:23:29,574 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:23:29,574 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:23:29,575 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:23:29,575 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:23:29,577 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:23:29,577 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 115 transitions, 251 flow [2020-10-16 11:23:29,577 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 115 transitions, 251 flow [2020-10-16 11:23:29,577 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 108 places, 115 transitions, 251 flow [2020-10-16 11:23:29,604 INFO L129 PetriNetUnfolder]: 17/144 cut-off events. [2020-10-16 11:23:29,605 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 11:23:29,607 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 144 events. 17/144 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 374 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 111. Up to 8 conditions per place. [2020-10-16 11:23:29,613 INFO L117 LiptonReduction]: Number of co-enabled transitions 5928 [2020-10-16 11:23:31,819 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-16 11:23:31,906 INFO L132 LiptonReduction]: Checked pairs total: 14612 [2020-10-16 11:23:31,907 INFO L134 LiptonReduction]: Total number of compositions: 102 [2020-10-16 11:23:31,907 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 38 transitions, 97 flow [2020-10-16 11:23:32,116 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 4009 states. [2020-10-16 11:23:32,117 INFO L276 IsEmpty]: Start isEmpty. Operand 4009 states. [2020-10-16 11:23:32,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-16 11:23:32,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:32,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:32,118 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:32,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:32,118 INFO L82 PathProgramCache]: Analyzing trace with hash 349546925, now seen corresponding path program 1 times [2020-10-16 11:23:32,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:32,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553915008] [2020-10-16 11:23:32,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:32,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:32,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553915008] [2020-10-16 11:23:32,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:32,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:23:32,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590441372] [2020-10-16 11:23:32,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:23:32,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:32,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:23:32,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:23:32,160 INFO L87 Difference]: Start difference. First operand 4009 states. Second operand 4 states. [2020-10-16 11:23:32,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:32,279 INFO L93 Difference]: Finished difference Result 4251 states and 16881 transitions. [2020-10-16 11:23:32,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:23:32,280 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-16 11:23:32,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:32,328 INFO L225 Difference]: With dead ends: 4251 [2020-10-16 11:23:32,328 INFO L226 Difference]: Without dead ends: 4251 [2020-10-16 11:23:32,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:23:32,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4251 states. [2020-10-16 11:23:32,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4251 to 3897. [2020-10-16 11:23:32,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3897 states. [2020-10-16 11:23:32,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3897 states to 3897 states and 15858 transitions. [2020-10-16 11:23:32,538 INFO L78 Accepts]: Start accepts. Automaton has 3897 states and 15858 transitions. Word has length 7 [2020-10-16 11:23:32,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:32,538 INFO L481 AbstractCegarLoop]: Abstraction has 3897 states and 15858 transitions. [2020-10-16 11:23:32,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:23:32,538 INFO L276 IsEmpty]: Start isEmpty. Operand 3897 states and 15858 transitions. [2020-10-16 11:23:32,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 11:23:32,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:32,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:32,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 11:23:32,540 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:32,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:32,540 INFO L82 PathProgramCache]: Analyzing trace with hash -2048946228, now seen corresponding path program 1 times [2020-10-16 11:23:32,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:32,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085026662] [2020-10-16 11:23:32,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:32,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:32,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085026662] [2020-10-16 11:23:32,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:32,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:32,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790339412] [2020-10-16 11:23:32,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:23:32,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:32,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:23:32,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:32,573 INFO L87 Difference]: Start difference. First operand 3897 states and 15858 transitions. Second operand 3 states. [2020-10-16 11:23:32,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:32,718 INFO L93 Difference]: Finished difference Result 4251 states and 16527 transitions. [2020-10-16 11:23:32,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:23:32,718 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 11:23:32,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:32,763 INFO L225 Difference]: With dead ends: 4251 [2020-10-16 11:23:32,763 INFO L226 Difference]: Without dead ends: 4251 [2020-10-16 11:23:32,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:32,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4251 states. [2020-10-16 11:23:32,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4251 to 3897. [2020-10-16 11:23:32,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3897 states. [2020-10-16 11:23:32,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3897 states to 3897 states and 15504 transitions. [2020-10-16 11:23:32,990 INFO L78 Accepts]: Start accepts. Automaton has 3897 states and 15504 transitions. Word has length 8 [2020-10-16 11:23:32,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:32,990 INFO L481 AbstractCegarLoop]: Abstraction has 3897 states and 15504 transitions. [2020-10-16 11:23:32,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:23:32,990 INFO L276 IsEmpty]: Start isEmpty. Operand 3897 states and 15504 transitions. [2020-10-16 11:23:32,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 11:23:32,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:32,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:32,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 11:23:32,992 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:32,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:32,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1977084772, now seen corresponding path program 1 times [2020-10-16 11:23:32,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:32,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121154671] [2020-10-16 11:23:32,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:33,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:33,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121154671] [2020-10-16 11:23:33,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:33,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:33,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425983899] [2020-10-16 11:23:33,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:33,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:33,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:33,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:33,060 INFO L87 Difference]: Start difference. First operand 3897 states and 15504 transitions. Second operand 5 states. [2020-10-16 11:23:33,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:33,388 INFO L93 Difference]: Finished difference Result 11165 states and 43215 transitions. [2020-10-16 11:23:33,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:23:33,389 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-16 11:23:33,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:33,480 INFO L225 Difference]: With dead ends: 11165 [2020-10-16 11:23:33,480 INFO L226 Difference]: Without dead ends: 11165 [2020-10-16 11:23:33,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:33,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11165 states. [2020-10-16 11:23:33,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11165 to 6034. [2020-10-16 11:23:33,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6034 states. [2020-10-16 11:23:33,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6034 states to 6034 states and 23844 transitions. [2020-10-16 11:23:33,973 INFO L78 Accepts]: Start accepts. Automaton has 6034 states and 23844 transitions. Word has length 10 [2020-10-16 11:23:33,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:33,974 INFO L481 AbstractCegarLoop]: Abstraction has 6034 states and 23844 transitions. [2020-10-16 11:23:33,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:33,974 INFO L276 IsEmpty]: Start isEmpty. Operand 6034 states and 23844 transitions. [2020-10-16 11:23:33,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 11:23:33,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:33,975 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:33,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 11:23:33,976 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:33,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:33,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1526629100, now seen corresponding path program 1 times [2020-10-16 11:23:33,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:33,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532716451] [2020-10-16 11:23:33,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:34,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:23:34,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532716451] [2020-10-16 11:23:34,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:34,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:23:34,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515310008] [2020-10-16 11:23:34,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:23:34,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:34,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:23:34,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:23:34,007 INFO L87 Difference]: Start difference. First operand 6034 states and 23844 transitions. Second operand 4 states. [2020-10-16 11:23:34,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:34,138 INFO L93 Difference]: Finished difference Result 7619 states and 30053 transitions. [2020-10-16 11:23:34,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:23:34,139 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-16 11:23:34,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:34,186 INFO L225 Difference]: With dead ends: 7619 [2020-10-16 11:23:34,186 INFO L226 Difference]: Without dead ends: 7619 [2020-10-16 11:23:34,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:23:34,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7619 states. [2020-10-16 11:23:34,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7619 to 7055. [2020-10-16 11:23:34,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7055 states. [2020-10-16 11:23:34,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7055 states to 7055 states and 28411 transitions. [2020-10-16 11:23:34,520 INFO L78 Accepts]: Start accepts. Automaton has 7055 states and 28411 transitions. Word has length 10 [2020-10-16 11:23:34,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:34,521 INFO L481 AbstractCegarLoop]: Abstraction has 7055 states and 28411 transitions. [2020-10-16 11:23:34,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:23:34,521 INFO L276 IsEmpty]: Start isEmpty. Operand 7055 states and 28411 transitions. [2020-10-16 11:23:34,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 11:23:34,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:34,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:34,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 11:23:34,523 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:34,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:34,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1160084803, now seen corresponding path program 1 times [2020-10-16 11:23:34,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:34,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278676218] [2020-10-16 11:23:34,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:35,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:35,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278676218] [2020-10-16 11:23:35,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495919893] [2020-10-16 11:23:35,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:23:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:35,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:23:35,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:35,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:35,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:35,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-10-16 11:23:35,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929638063] [2020-10-16 11:23:35,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:35,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:35,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:35,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:35,224 INFO L87 Difference]: Start difference. First operand 7055 states and 28411 transitions. Second operand 5 states. [2020-10-16 11:23:35,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:35,618 INFO L93 Difference]: Finished difference Result 13135 states and 51631 transitions. [2020-10-16 11:23:35,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:23:35,619 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-16 11:23:35,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:35,687 INFO L225 Difference]: With dead ends: 13135 [2020-10-16 11:23:35,688 INFO L226 Difference]: Without dead ends: 13135 [2020-10-16 11:23:35,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:35,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13135 states. [2020-10-16 11:23:36,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13135 to 9279. [2020-10-16 11:23:36,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9279 states. [2020-10-16 11:23:36,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9279 states to 9279 states and 38063 transitions. [2020-10-16 11:23:36,223 INFO L78 Accepts]: Start accepts. Automaton has 9279 states and 38063 transitions. Word has length 11 [2020-10-16 11:23:36,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:36,223 INFO L481 AbstractCegarLoop]: Abstraction has 9279 states and 38063 transitions. [2020-10-16 11:23:36,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:36,224 INFO L276 IsEmpty]: Start isEmpty. Operand 9279 states and 38063 transitions. [2020-10-16 11:23:36,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 11:23:36,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:36,225 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:36,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-16 11:23:36,438 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:36,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:36,439 INFO L82 PathProgramCache]: Analyzing trace with hash 80863033, now seen corresponding path program 1 times [2020-10-16 11:23:36,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:36,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940434986] [2020-10-16 11:23:36,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:36,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:23:36,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940434986] [2020-10-16 11:23:36,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:36,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:36,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371717196] [2020-10-16 11:23:36,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:23:36,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:36,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:23:36,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:36,464 INFO L87 Difference]: Start difference. First operand 9279 states and 38063 transitions. Second operand 3 states. [2020-10-16 11:23:36,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:36,556 INFO L93 Difference]: Finished difference Result 9641 states and 38195 transitions. [2020-10-16 11:23:36,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:23:36,557 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-16 11:23:36,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:36,604 INFO L225 Difference]: With dead ends: 9641 [2020-10-16 11:23:36,605 INFO L226 Difference]: Without dead ends: 9641 [2020-10-16 11:23:36,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:36,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9641 states. [2020-10-16 11:23:36,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9641 to 9065. [2020-10-16 11:23:36,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9065 states. [2020-10-16 11:23:36,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9065 states to 9065 states and 36455 transitions. [2020-10-16 11:23:36,931 INFO L78 Accepts]: Start accepts. Automaton has 9065 states and 36455 transitions. Word has length 11 [2020-10-16 11:23:36,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:36,931 INFO L481 AbstractCegarLoop]: Abstraction has 9065 states and 36455 transitions. [2020-10-16 11:23:36,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:23:36,932 INFO L276 IsEmpty]: Start isEmpty. Operand 9065 states and 36455 transitions. [2020-10-16 11:23:36,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 11:23:36,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:36,933 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:36,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-16 11:23:36,933 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:36,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:36,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1602889540, now seen corresponding path program 2 times [2020-10-16 11:23:36,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:36,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832470598] [2020-10-16 11:23:36,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:36,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:36,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832470598] [2020-10-16 11:23:36,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220271851] [2020-10-16 11:23:36,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:23:37,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:23:37,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:23:37,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:23:37,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:37,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:37,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:37,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-16 11:23:37,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805176394] [2020-10-16 11:23:37,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 11:23:37,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:37,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 11:23:37,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-16 11:23:37,058 INFO L87 Difference]: Start difference. First operand 9065 states and 36455 transitions. Second operand 6 states. [2020-10-16 11:23:37,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:37,571 INFO L93 Difference]: Finished difference Result 14129 states and 54503 transitions. [2020-10-16 11:23:37,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 11:23:37,572 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-16 11:23:37,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:37,643 INFO L225 Difference]: With dead ends: 14129 [2020-10-16 11:23:37,643 INFO L226 Difference]: Without dead ends: 14129 [2020-10-16 11:23:37,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:23:37,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14129 states. [2020-10-16 11:23:37,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14129 to 9554. [2020-10-16 11:23:37,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9554 states. [2020-10-16 11:23:38,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9554 states to 9554 states and 38824 transitions. [2020-10-16 11:23:38,011 INFO L78 Accepts]: Start accepts. Automaton has 9554 states and 38824 transitions. Word has length 12 [2020-10-16 11:23:38,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:38,012 INFO L481 AbstractCegarLoop]: Abstraction has 9554 states and 38824 transitions. [2020-10-16 11:23:38,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 11:23:38,012 INFO L276 IsEmpty]: Start isEmpty. Operand 9554 states and 38824 transitions. [2020-10-16 11:23:38,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 11:23:38,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:38,013 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2020-10-16 11:23:38,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-16 11:23:38,214 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:38,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:38,215 INFO L82 PathProgramCache]: Analyzing trace with hash 562791573, now seen corresponding path program 1 times [2020-10-16 11:23:38,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:38,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606025038] [2020-10-16 11:23:38,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:23:38,223 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:23:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:23:38,229 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:23:38,236 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 11:23:38,236 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 11:23:38,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-16 11:23:38,236 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 11:23:38,237 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 11:23:38,237 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-16 11:23:38,245 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,245 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,246 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,246 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,246 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,246 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,246 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,246 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,247 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,247 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,247 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,247 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,247 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,247 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,247 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,248 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,248 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,248 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,248 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,248 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,248 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,248 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,249 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,249 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,249 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,249 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,249 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,249 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,249 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,250 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,250 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,250 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,250 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,250 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,250 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,251 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,251 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,251 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,251 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,251 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,251 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,251 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,252 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,252 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,252 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,252 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,252 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,252 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,252 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,253 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,253 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,253 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,253 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,253 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,253 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,253 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,254 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,254 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,254 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,254 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,254 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,254 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,255 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,255 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,255 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,255 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,255 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,255 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,255 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,256 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,256 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,256 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,256 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,256 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,256 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,256 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,257 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,257 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,257 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,257 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,257 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,257 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,257 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,258 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,258 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,258 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,258 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,258 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,258 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,258 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,259 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,259 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,259 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,259 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,259 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,259 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,259 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,260 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,260 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,260 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,260 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,260 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,260 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,261 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,261 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,261 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,261 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,261 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,261 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,261 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,261 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,262 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,262 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,262 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,262 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,262 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,262 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,262 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,263 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,263 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,263 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,263 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,263 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,263 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,264 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,264 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,264 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,264 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,264 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,265 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,265 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,265 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,265 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,265 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,266 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,267 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,267 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,267 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,267 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,267 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,267 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,268 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,268 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,268 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,269 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,269 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,270 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,270 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,270 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,270 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,270 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,270 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,271 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,271 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,272 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,272 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~end~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,272 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,273 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~c~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,273 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,273 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,273 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,273 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,273 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,274 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:38,275 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:23:38,275 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 11:23:38,275 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:23:38,275 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:23:38,275 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:23:38,275 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:23:38,276 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:23:38,276 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:23:38,276 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:23:38,276 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:23:38,278 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:23:38,278 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 142 transitions, 316 flow [2020-10-16 11:23:38,278 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 142 transitions, 316 flow [2020-10-16 11:23:38,278 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 133 places, 142 transitions, 316 flow [2020-10-16 11:23:38,309 INFO L129 PetriNetUnfolder]: 22/181 cut-off events. [2020-10-16 11:23:38,309 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 11:23:38,313 INFO L80 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 181 events. 22/181 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 556 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 152. Up to 10 conditions per place. [2020-10-16 11:23:38,323 INFO L117 LiptonReduction]: Number of co-enabled transitions 10712 [2020-10-16 11:23:40,973 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-16 11:23:41,047 INFO L132 LiptonReduction]: Checked pairs total: 28741 [2020-10-16 11:23:41,048 INFO L134 LiptonReduction]: Total number of compositions: 128 [2020-10-16 11:23:41,048 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 50 places, 49 transitions, 130 flow [2020-10-16 11:23:46,140 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 36085 states. [2020-10-16 11:23:46,140 INFO L276 IsEmpty]: Start isEmpty. Operand 36085 states. [2020-10-16 11:23:46,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-16 11:23:46,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:46,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:46,141 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:46,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:46,142 INFO L82 PathProgramCache]: Analyzing trace with hash 885326645, now seen corresponding path program 1 times [2020-10-16 11:23:46,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:46,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989703289] [2020-10-16 11:23:46,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:46,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:46,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989703289] [2020-10-16 11:23:46,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:46,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:23:46,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914273110] [2020-10-16 11:23:46,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:23:46,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:46,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:23:46,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:23:46,166 INFO L87 Difference]: Start difference. First operand 36085 states. Second operand 4 states. [2020-10-16 11:23:46,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:46,522 INFO L93 Difference]: Finished difference Result 38271 states and 194460 transitions. [2020-10-16 11:23:46,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:23:46,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-16 11:23:46,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:46,731 INFO L225 Difference]: With dead ends: 38271 [2020-10-16 11:23:46,732 INFO L226 Difference]: Without dead ends: 38271 [2020-10-16 11:23:46,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:23:48,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38271 states. [2020-10-16 11:23:50,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38271 to 35082. [2020-10-16 11:23:50,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35082 states. [2020-10-16 11:23:50,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35082 states to 35082 states and 181710 transitions. [2020-10-16 11:23:50,214 INFO L78 Accepts]: Start accepts. Automaton has 35082 states and 181710 transitions. Word has length 7 [2020-10-16 11:23:50,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:50,214 INFO L481 AbstractCegarLoop]: Abstraction has 35082 states and 181710 transitions. [2020-10-16 11:23:50,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:23:50,214 INFO L276 IsEmpty]: Start isEmpty. Operand 35082 states and 181710 transitions. [2020-10-16 11:23:50,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 11:23:50,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:50,215 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:50,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-16 11:23:50,215 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:50,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:50,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1675324038, now seen corresponding path program 1 times [2020-10-16 11:23:50,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:50,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84471641] [2020-10-16 11:23:50,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:50,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:50,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84471641] [2020-10-16 11:23:50,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:50,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:50,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567968722] [2020-10-16 11:23:50,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:23:50,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:50,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:23:50,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:50,255 INFO L87 Difference]: Start difference. First operand 35082 states and 181710 transitions. Second operand 3 states. [2020-10-16 11:23:50,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:50,473 INFO L93 Difference]: Finished difference Result 38271 states and 191271 transitions. [2020-10-16 11:23:50,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:23:50,473 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 11:23:50,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:50,626 INFO L225 Difference]: With dead ends: 38271 [2020-10-16 11:23:50,626 INFO L226 Difference]: Without dead ends: 38271 [2020-10-16 11:23:50,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:53,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38271 states. [2020-10-16 11:23:53,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38271 to 35082. [2020-10-16 11:23:53,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35082 states. [2020-10-16 11:23:54,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35082 states to 35082 states and 178521 transitions. [2020-10-16 11:23:54,506 INFO L78 Accepts]: Start accepts. Automaton has 35082 states and 178521 transitions. Word has length 8 [2020-10-16 11:23:54,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:54,506 INFO L481 AbstractCegarLoop]: Abstraction has 35082 states and 178521 transitions. [2020-10-16 11:23:54,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:23:54,507 INFO L276 IsEmpty]: Start isEmpty. Operand 35082 states and 178521 transitions. [2020-10-16 11:23:54,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 11:23:54,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:54,507 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:54,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-16 11:23:54,507 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:54,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:54,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1680450871, now seen corresponding path program 1 times [2020-10-16 11:23:54,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:54,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37635373] [2020-10-16 11:23:54,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:54,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:23:54,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37635373] [2020-10-16 11:23:54,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:54,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:23:54,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760955155] [2020-10-16 11:23:54,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:23:54,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:54,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:23:54,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:54,543 INFO L87 Difference]: Start difference. First operand 35082 states and 178521 transitions. Second operand 3 states. [2020-10-16 11:23:54,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:54,834 INFO L93 Difference]: Finished difference Result 46764 states and 232812 transitions. [2020-10-16 11:23:54,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:23:54,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-16 11:23:54,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:54,981 INFO L225 Difference]: With dead ends: 46764 [2020-10-16 11:23:54,981 INFO L226 Difference]: Without dead ends: 46764 [2020-10-16 11:23:54,981 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 [2020-10-16 11:23:55,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46764 states. [2020-10-16 11:23:58,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46764 to 42870. [2020-10-16 11:23:58,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42870 states. [2020-10-16 11:23:58,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42870 states to 42870 states and 217311 transitions. [2020-10-16 11:23:58,461 INFO L78 Accepts]: Start accepts. Automaton has 42870 states and 217311 transitions. Word has length 10 [2020-10-16 11:23:58,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:58,462 INFO L481 AbstractCegarLoop]: Abstraction has 42870 states and 217311 transitions. [2020-10-16 11:23:58,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:23:58,462 INFO L276 IsEmpty]: Start isEmpty. Operand 42870 states and 217311 transitions. [2020-10-16 11:23:58,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 11:23:58,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:58,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:58,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-16 11:23:58,463 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:58,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:58,463 INFO L82 PathProgramCache]: Analyzing trace with hash -662629176, now seen corresponding path program 1 times [2020-10-16 11:23:58,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:58,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198022696] [2020-10-16 11:23:58,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:58,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:58,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198022696] [2020-10-16 11:23:58,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:58,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:58,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472736557] [2020-10-16 11:23:58,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:58,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:58,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:58,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:58,501 INFO L87 Difference]: Start difference. First operand 42870 states and 217311 transitions. Second operand 5 states. [2020-10-16 11:24:00,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:00,063 INFO L93 Difference]: Finished difference Result 141044 states and 692287 transitions. [2020-10-16 11:24:00,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:24:00,064 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-16 11:24:00,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:04,382 INFO L225 Difference]: With dead ends: 141044 [2020-10-16 11:24:04,382 INFO L226 Difference]: Without dead ends: 141044 [2020-10-16 11:24:04,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:24:05,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141044 states. [2020-10-16 11:24:07,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141044 to 76855. [2020-10-16 11:24:07,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76855 states. [2020-10-16 11:24:07,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76855 states to 76855 states and 386073 transitions. [2020-10-16 11:24:07,523 INFO L78 Accepts]: Start accepts. Automaton has 76855 states and 386073 transitions. Word has length 10 [2020-10-16 11:24:07,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:07,523 INFO L481 AbstractCegarLoop]: Abstraction has 76855 states and 386073 transitions. [2020-10-16 11:24:07,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:24:07,524 INFO L276 IsEmpty]: Start isEmpty. Operand 76855 states and 386073 transitions. [2020-10-16 11:24:07,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 11:24:07,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:07,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:07,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-16 11:24:07,525 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:07,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:07,525 INFO L82 PathProgramCache]: Analyzing trace with hash 933333843, now seen corresponding path program 1 times [2020-10-16 11:24:07,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:07,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332561906] [2020-10-16 11:24:07,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:07,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:24:07,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332561906] [2020-10-16 11:24:07,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126111680] [2020-10-16 11:24:07,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:24:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:07,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:24:07,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:07,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:24:07,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:07,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-10-16 11:24:07,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132167590] [2020-10-16 11:24:07,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:24:07,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:07,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:24:07,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:24:07,621 INFO L87 Difference]: Start difference. First operand 76855 states and 386073 transitions. Second operand 5 states. [2020-10-16 11:24:09,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:09,488 INFO L93 Difference]: Finished difference Result 156575 states and 767493 transitions. [2020-10-16 11:24:09,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:24:09,488 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-16 11:24:09,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:14,948 INFO L225 Difference]: With dead ends: 156575 [2020-10-16 11:24:14,948 INFO L226 Difference]: Without dead ends: 156575 [2020-10-16 11:24:14,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:24:16,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156575 states. [2020-10-16 11:24:18,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156575 to 106668. [2020-10-16 11:24:18,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106668 states. [2020-10-16 11:24:19,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106668 states to 106668 states and 541606 transitions. [2020-10-16 11:24:19,436 INFO L78 Accepts]: Start accepts. Automaton has 106668 states and 541606 transitions. Word has length 11 [2020-10-16 11:24:19,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:19,439 INFO L481 AbstractCegarLoop]: Abstraction has 106668 states and 541606 transitions. [2020-10-16 11:24:19,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:24:19,439 INFO L276 IsEmpty]: Start isEmpty. Operand 106668 states and 541606 transitions. [2020-10-16 11:24:19,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 11:24:19,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:19,440 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:19,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-16 11:24:19,656 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:19,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:19,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1131420120, now seen corresponding path program 2 times [2020-10-16 11:24:19,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:19,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933055542] [2020-10-16 11:24:19,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:19,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:24:19,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933055542] [2020-10-16 11:24:19,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147985757] [2020-10-16 11:24:19,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:24:19,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:24:19,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:24:19,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:24:19,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:19,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:24:19,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:19,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-16 11:24:19,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33471352] [2020-10-16 11:24:19,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 11:24:19,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:19,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 11:24:19,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-16 11:24:19,792 INFO L87 Difference]: Start difference. First operand 106668 states and 541606 transitions. Second operand 6 states. [2020-10-16 11:24:22,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:22,409 INFO L93 Difference]: Finished difference Result 159236 states and 782186 transitions. [2020-10-16 11:24:22,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 11:24:22,409 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-16 11:24:22,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:22,956 INFO L225 Difference]: With dead ends: 159236 [2020-10-16 11:24:22,956 INFO L226 Difference]: Without dead ends: 159236 [2020-10-16 11:24:22,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:24:25,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159236 states. [2020-10-16 11:24:33,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159236 to 111759. [2020-10-16 11:24:33,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111759 states. [2020-10-16 11:24:33,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111759 states to 111759 states and 571639 transitions. [2020-10-16 11:24:33,930 INFO L78 Accepts]: Start accepts. Automaton has 111759 states and 571639 transitions. Word has length 12 [2020-10-16 11:24:33,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:33,930 INFO L481 AbstractCegarLoop]: Abstraction has 111759 states and 571639 transitions. [2020-10-16 11:24:33,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 11:24:33,930 INFO L276 IsEmpty]: Start isEmpty. Operand 111759 states and 571639 transitions. [2020-10-16 11:24:33,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:24:33,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:33,932 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2020-10-16 11:24:34,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:24:34,892 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:34,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:34,893 INFO L82 PathProgramCache]: Analyzing trace with hash 527017072, now seen corresponding path program 1 times [2020-10-16 11:24:34,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:34,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896511852] [2020-10-16 11:24:34,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:34,922 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 11:24:34,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896511852] [2020-10-16 11:24:34,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:34,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:24:34,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939651313] [2020-10-16 11:24:34,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:24:34,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:34,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:24:34,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:24:34,924 INFO L87 Difference]: Start difference. First operand 111759 states and 571639 transitions. Second operand 4 states. [2020-10-16 11:24:35,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:35,880 INFO L93 Difference]: Finished difference Result 140498 states and 717820 transitions. [2020-10-16 11:24:35,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:24:35,881 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-16 11:24:35,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:36,365 INFO L225 Difference]: With dead ends: 140498 [2020-10-16 11:24:36,365 INFO L226 Difference]: Without dead ends: 140498 [2020-10-16 11:24:36,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:24:42,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140498 states. [2020-10-16 11:24:45,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140498 to 130613. [2020-10-16 11:24:45,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130613 states. [2020-10-16 11:24:46,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130613 states to 130613 states and 677480 transitions. [2020-10-16 11:24:46,350 INFO L78 Accepts]: Start accepts. Automaton has 130613 states and 677480 transitions. Word has length 13 [2020-10-16 11:24:46,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:46,350 INFO L481 AbstractCegarLoop]: Abstraction has 130613 states and 677480 transitions. [2020-10-16 11:24:46,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:24:46,350 INFO L276 IsEmpty]: Start isEmpty. Operand 130613 states and 677480 transitions. [2020-10-16 11:24:46,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:24:46,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:46,352 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:46,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-16 11:24:46,352 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:46,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:46,353 INFO L82 PathProgramCache]: Analyzing trace with hash -207198542, now seen corresponding path program 1 times [2020-10-16 11:24:46,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:46,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971119447] [2020-10-16 11:24:46,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:46,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:24:46,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971119447] [2020-10-16 11:24:46,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:46,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:24:46,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243900192] [2020-10-16 11:24:46,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:24:46,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:46,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:24:46,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:24:46,416 INFO L87 Difference]: Start difference. First operand 130613 states and 677480 transitions. Second operand 5 states. [2020-10-16 11:24:57,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:57,496 INFO L93 Difference]: Finished difference Result 339201 states and 1759962 transitions. [2020-10-16 11:24:57,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:24:57,496 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 11:24:57,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:59,726 INFO L225 Difference]: With dead ends: 339201 [2020-10-16 11:24:59,726 INFO L226 Difference]: Without dead ends: 339201 [2020-10-16 11:24:59,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:25:02,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339201 states. [2020-10-16 11:25:08,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339201 to 187241. [2020-10-16 11:25:08,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187241 states. [2020-10-16 11:25:20,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187241 states to 187241 states and 988529 transitions. [2020-10-16 11:25:20,703 INFO L78 Accepts]: Start accepts. Automaton has 187241 states and 988529 transitions. Word has length 13 [2020-10-16 11:25:20,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:20,703 INFO L481 AbstractCegarLoop]: Abstraction has 187241 states and 988529 transitions. [2020-10-16 11:25:20,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:25:20,703 INFO L276 IsEmpty]: Start isEmpty. Operand 187241 states and 988529 transitions. [2020-10-16 11:25:20,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:25:20,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:20,705 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:20,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-16 11:25:20,705 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:25:20,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:20,705 INFO L82 PathProgramCache]: Analyzing trace with hash -714283533, now seen corresponding path program 3 times [2020-10-16 11:25:20,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:20,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240887170] [2020-10-16 11:25:20,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:20,781 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:25:20,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240887170] [2020-10-16 11:25:20,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905432123] [2020-10-16 11:25:20,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:25:20,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 11:25:20,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:25:20,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:25:20,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:25:20,900 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 11:25:20,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-16 11:25:20,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2020-10-16 11:25:20,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138950867] [2020-10-16 11:25:20,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:25:20,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:20,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:25:20,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:25:20,902 INFO L87 Difference]: Start difference. First operand 187241 states and 988529 transitions. Second operand 5 states. [2020-10-16 11:25:29,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:29,716 INFO L93 Difference]: Finished difference Result 324012 states and 1699504 transitions. [2020-10-16 11:25:29,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:25:29,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 11:25:29,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:31,846 INFO L225 Difference]: With dead ends: 324012 [2020-10-16 11:25:31,846 INFO L226 Difference]: Without dead ends: 324012 [2020-10-16 11:25:31,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:25:39,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324012 states. [2020-10-16 11:25:45,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324012 to 203980. [2020-10-16 11:25:45,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203980 states. [2020-10-16 11:25:47,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203980 states to 203980 states and 1071758 transitions. [2020-10-16 11:25:47,605 INFO L78 Accepts]: Start accepts. Automaton has 203980 states and 1071758 transitions. Word has length 13 [2020-10-16 11:25:47,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:47,605 INFO L481 AbstractCegarLoop]: Abstraction has 203980 states and 1071758 transitions. [2020-10-16 11:25:47,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:25:47,605 INFO L276 IsEmpty]: Start isEmpty. Operand 203980 states and 1071758 transitions. [2020-10-16 11:25:47,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 11:25:47,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:47,607 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:47,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:25:47,815 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:25:47,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:47,815 INFO L82 PathProgramCache]: Analyzing trace with hash -842338344, now seen corresponding path program 1 times [2020-10-16 11:25:47,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:47,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216970108] [2020-10-16 11:25:47,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:47,845 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 11:25:47,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216970108] [2020-10-16 11:25:47,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:25:47,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:25:47,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345425557] [2020-10-16 11:25:47,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:25:47,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:47,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:25:47,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:25:47,847 INFO L87 Difference]: Start difference. First operand 203980 states and 1071758 transitions. Second operand 3 states. [2020-10-16 11:25:56,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:56,347 INFO L93 Difference]: Finished difference Result 214092 states and 1094877 transitions. [2020-10-16 11:25:56,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:25:56,347 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-16 11:25:56,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:58,084 INFO L225 Difference]: With dead ends: 214092 [2020-10-16 11:25:58,085 INFO L226 Difference]: Without dead ends: 214092 [2020-10-16 11:25:58,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:25:59,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214092 states. [2020-10-16 11:26:04,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214092 to 200826. [2020-10-16 11:26:04,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200826 states. [2020-10-16 11:26:06,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200826 states to 200826 states and 1039664 transitions. [2020-10-16 11:26:06,638 INFO L78 Accepts]: Start accepts. Automaton has 200826 states and 1039664 transitions. Word has length 14 [2020-10-16 11:26:06,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:06,638 INFO L481 AbstractCegarLoop]: Abstraction has 200826 states and 1039664 transitions. [2020-10-16 11:26:06,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:26:06,638 INFO L276 IsEmpty]: Start isEmpty. Operand 200826 states and 1039664 transitions. [2020-10-16 11:26:06,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 11:26:06,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:06,641 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:06,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-16 11:26:06,641 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:26:06,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:06,642 INFO L82 PathProgramCache]: Analyzing trace with hash -2128185923, now seen corresponding path program 1 times [2020-10-16 11:26:06,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:06,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411830657] [2020-10-16 11:26:06,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:06,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:26:06,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411830657] [2020-10-16 11:26:06,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315009710] [2020-10-16 11:26:06,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:26:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:06,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:26:06,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:26:06,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:26:06,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:26:06,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-10-16 11:26:06,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633362272] [2020-10-16 11:26:06,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:26:06,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:06,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:26:06,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:26:06,727 INFO L87 Difference]: Start difference. First operand 200826 states and 1039664 transitions. Second operand 5 states. [2020-10-16 11:26:17,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:26:17,020 INFO L93 Difference]: Finished difference Result 345997 states and 1776480 transitions. [2020-10-16 11:26:17,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:26:17,020 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-16 11:26:17,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:26:18,373 INFO L225 Difference]: With dead ends: 345997 [2020-10-16 11:26:18,373 INFO L226 Difference]: Without dead ends: 345997 [2020-10-16 11:26:18,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 Received shutdown request... [2020-10-16 11:26:27,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345997 states. [2020-10-16 11:26:27,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:26:27,694 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-16 11:26:27,699 WARN L235 ceAbstractionStarter]: Timeout [2020-10-16 11:26:27,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:26:27 BasicIcfg [2020-10-16 11:26:27,700 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 11:26:27,704 INFO L168 Benchmark]: Toolchain (without parser) took 185010.15 ms. Allocated memory was 141.6 MB in the beginning and 5.2 GB in the end (delta: 5.1 GB). Free memory was 102.0 MB in the beginning and 3.1 GB in the end (delta: -3.0 GB). Peak memory consumption was 4.1 GB. Max. memory is 7.1 GB. [2020-10-16 11:26:27,705 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-16 11:26:27,705 INFO L168 Benchmark]: CACSL2BoogieTranslator took 898.31 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 101.8 MB in the beginning and 135.4 MB in the end (delta: -33.6 MB). Peak memory consumption was 34.1 MB. Max. memory is 7.1 GB. [2020-10-16 11:26:27,708 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.67 ms. Allocated memory is still 203.9 MB. Free memory was 135.4 MB in the beginning and 132.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-10-16 11:26:27,714 INFO L168 Benchmark]: Boogie Preprocessor took 34.49 ms. Allocated memory is still 203.9 MB. Free memory was 132.8 MB in the beginning and 131.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 11:26:27,715 INFO L168 Benchmark]: RCFGBuilder took 528.79 ms. Allocated memory is still 203.9 MB. Free memory was 131.6 MB in the beginning and 105.1 MB in the end (delta: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-10-16 11:26:27,715 INFO L168 Benchmark]: TraceAbstraction took 183453.57 ms. Allocated memory was 203.9 MB in the beginning and 5.2 GB in the end (delta: 5.0 GB). Free memory was 104.5 MB in the beginning and 3.1 GB in the end (delta: -3.0 GB). Peak memory consumption was 4.1 GB. Max. memory is 7.1 GB. [2020-10-16 11:26:27,722 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 898.31 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 101.8 MB in the beginning and 135.4 MB in the end (delta: -33.6 MB). Peak memory consumption was 34.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 88.67 ms. Allocated memory is still 203.9 MB. Free memory was 135.4 MB in the beginning and 132.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.49 ms. Allocated memory is still 203.9 MB. Free memory was 132.8 MB in the beginning and 131.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 528.79 ms. Allocated memory is still 203.9 MB. Free memory was 131.6 MB in the beginning and 105.1 MB in the end (delta: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 183453.57 ms. Allocated memory was 203.9 MB in the beginning and 5.2 GB in the end (delta: 5.0 GB). Free memory was 104.5 MB in the beginning and 3.1 GB in the end (delta: -3.0 GB). Peak memory consumption was 4.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 359 VarBasedMoverChecksPositive, 4 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 4 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 58 PlacesBefore, 12 PlacesAfterwards, 61 TransitionsBefore, 10 TransitionsAfterwards, 572 CoEnabledTransitionPairs, 5 FixpointIterations, 22 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 64 TotalNumberOfCompositions, 458 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1872 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 23 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 279 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 83 PlacesBefore, 28 PlacesAfterwards, 88 TransitionsBefore, 27 TransitionsAfterwards, 2548 CoEnabledTransitionPairs, 6 FixpointIterations, 24 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 11 ConcurrentYvCompositions, 6 ChoiceCompositions, 79 TotalNumberOfCompositions, 5928 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 3928 VarBasedMoverChecksPositive, 73 VarBasedMoverChecksNegative, 35 SemBasedMoverChecksPositive, 38 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 372 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.3s, 108 PlacesBefore, 39 PlacesAfterwards, 115 TransitionsBefore, 38 TransitionsAfterwards, 5928 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 16 ConcurrentYvCompositions, 8 ChoiceCompositions, 102 TotalNumberOfCompositions, 14612 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 6470 VarBasedMoverChecksPositive, 134 VarBasedMoverChecksNegative, 76 SemBasedMoverChecksPositive, 58 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 415 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.7s, 133 PlacesBefore, 50 PlacesAfterwards, 142 TransitionsBefore, 49 TransitionsAfterwards, 10712 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 71 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 22 ConcurrentYvCompositions, 10 ChoiceCompositions, 128 TotalNumberOfCompositions, 28741 MoverChecksTotal - TimeoutResultAtElement [Line: 987]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 987). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 55 locations, 1 error locations. Started 4 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 183.2s, OverallIterations: 24, TraceHistogramMax: 4, AutomataDifference: 67.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 14.1s, HoareTripleCheckerStatistics: 1474 SDtfs, 1811 SDslu, 1804 SDs, 0 SdLazy, 2549 SolverSat, 86 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=203980occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 96.4s AutomataMinimizationTime, 21 MinimizatonAttempts, 482457 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 318 NumberOfCodeBlocks, 317 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 263 ConstructedInterpolants, 0 QuantifiedInterpolants, 10760 SizeOfPredicates, 10 NumberOfNonLiveVariables, 624 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 28 InterpolantComputations, 15 PerfectInterpolantSequences, 36/62 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown