/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/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-lit/fkp2014.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 08:15:22,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 08:15:22,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 08:15:22,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 08:15:22,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 08:15:22,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 08:15:22,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 08:15:22,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 08:15:22,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 08:15:22,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 08:15:22,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 08:15:22,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 08:15:22,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 08:15:22,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 08:15:22,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 08:15:22,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 08:15:22,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 08:15:22,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 08:15:22,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 08:15:22,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 08:15:22,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 08:15:22,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 08:15:22,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 08:15:22,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 08:15:22,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-27 08:15:22,692 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-27 08:15:22,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-27 08:15:22,693 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-27 08:15:22,693 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-27 08:15:22,694 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-27 08:15:22,694 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 08:15:22,695 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 08:15:22,696 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 08:15:22,697 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 08:15:22,698 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 08:15:22,698 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 08:15:22,700 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 08:15:22,700 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 08:15:22,700 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 08:15:22,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 08:15:22,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 08:15:22,707 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2019-12-27 08:15:22,728 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 08:15:22,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 08:15:22,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 08:15:22,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 08:15:22,730 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 08:15:22,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 08:15:22,731 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 08:15:22,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 08:15:22,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 08:15:22,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 08:15:22,733 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 08:15:22,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 08:15:22,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 08:15:22,734 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 08:15:22,734 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 08:15:22,734 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 08:15:22,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 08:15:22,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 08:15:22,735 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 08:15:22,735 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 08:15:22,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 08:15:22,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 08:15:22,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 08:15:22,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 08:15:22,736 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 08:15:22,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 08:15:22,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 08:15:22,736 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-27 08:15:22,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 08:15:22,737 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 08:15:23,007 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 08:15:23,024 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 08:15:23,029 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 08:15:23,030 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 08:15:23,031 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 08:15:23,032 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/fkp2014.i [2019-12-27 08:15:23,118 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa4f7be89/57c2fb80b42742eeb90e9b4c6066d36f/FLAG910540deb [2019-12-27 08:15:23,682 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 08:15:23,683 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fkp2014.i [2019-12-27 08:15:23,699 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa4f7be89/57c2fb80b42742eeb90e9b4c6066d36f/FLAG910540deb [2019-12-27 08:15:23,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa4f7be89/57c2fb80b42742eeb90e9b4c6066d36f [2019-12-27 08:15:23,956 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 08:15:23,959 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 08:15:23,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 08:15:23,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 08:15:23,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 08:15:23,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 08:15:23" (1/1) ... [2019-12-27 08:15:23,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a22c285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:15:23, skipping insertion in model container [2019-12-27 08:15:23,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 08:15:23" (1/1) ... [2019-12-27 08:15:23,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 08:15:24,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 08:15:24,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 08:15:24,452 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 08:15:24,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 08:15:24,626 INFO L208 MainTranslator]: Completed translation [2019-12-27 08:15:24,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:15:24 WrapperNode [2019-12-27 08:15:24,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 08:15:24,628 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 08:15:24,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 08:15:24,628 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 08:15:24,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:15:24" (1/1) ... [2019-12-27 08:15:24,656 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:15:24" (1/1) ... [2019-12-27 08:15:24,679 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 08:15:24,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 08:15:24,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 08:15:24,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 08:15:24,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:15:24" (1/1) ... [2019-12-27 08:15:24,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:15:24" (1/1) ... [2019-12-27 08:15:24,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:15:24" (1/1) ... [2019-12-27 08:15:24,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:15:24" (1/1) ... [2019-12-27 08:15:24,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:15:24" (1/1) ... [2019-12-27 08:15:24,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:15:24" (1/1) ... [2019-12-27 08:15:24,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:15:24" (1/1) ... [2019-12-27 08:15:24,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 08:15:24,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 08:15:24,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 08:15:24,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 08:15:24,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:15:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 08:15:24,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 08:15:24,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-27 08:15:24,779 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2019-12-27 08:15:24,779 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2019-12-27 08:15:24,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 08:15:24,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 08:15:24,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-27 08:15:24,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 08:15:24,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 08:15:24,784 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-27 08:15:25,065 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 08:15:25,066 INFO L287 CfgBuilder]: Removed 11 assume(true) statements. [2019-12-27 08:15:25,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 08:15:25 BoogieIcfgContainer [2019-12-27 08:15:25,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 08:15:25,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 08:15:25,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 08:15:25,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 08:15:25,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 08:15:23" (1/3) ... [2019-12-27 08:15:25,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@569cf61d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 08:15:25, skipping insertion in model container [2019-12-27 08:15:25,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:15:24" (2/3) ... [2019-12-27 08:15:25,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@569cf61d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 08:15:25, skipping insertion in model container [2019-12-27 08:15:25,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 08:15:25" (3/3) ... [2019-12-27 08:15:25,079 INFO L109 eAbstractionObserver]: Analyzing ICFG fkp2014.i [2019-12-27 08:15:25,094 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 08:15:25,095 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 08:15:25,103 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-27 08:15:25,104 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 08:15:25,131 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:25,132 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:25,132 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:25,133 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:25,133 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:25,133 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:25,134 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:25,134 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:25,134 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:25,135 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:25,135 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:25,135 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:25,136 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:25,136 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:25,140 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:25,141 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:25,141 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:25,141 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:25,142 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:25,142 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:25,142 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:25,143 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:25,161 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-27 08:15:25,183 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 08:15:25,183 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 08:15:25,183 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 08:15:25,183 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 08:15:25,184 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 08:15:25,184 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 08:15:25,184 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 08:15:25,184 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 08:15:25,199 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 43 transitions [2019-12-27 08:15:25,202 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 44 places, 43 transitions [2019-12-27 08:15:25,243 INFO L132 PetriNetUnfolder]: 3/52 cut-off events. [2019-12-27 08:15:25,243 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 08:15:25,249 INFO L76 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 52 events. 3/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs. 0/46 useless extension candidates. Maximal degree in co-relation 25. Up to 4 conditions per place. [2019-12-27 08:15:25,253 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 44 places, 43 transitions [2019-12-27 08:15:25,272 INFO L132 PetriNetUnfolder]: 3/52 cut-off events. [2019-12-27 08:15:25,272 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 08:15:25,274 INFO L76 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 52 events. 3/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs. 0/46 useless extension candidates. Maximal degree in co-relation 25. Up to 4 conditions per place. [2019-12-27 08:15:25,275 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 336 [2019-12-27 08:15:25,277 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-27 08:15:26,414 INFO L206 etLargeBlockEncoding]: Checked pairs total: 243 [2019-12-27 08:15:26,414 INFO L214 etLargeBlockEncoding]: Total number of compositions: 40 [2019-12-27 08:15:26,421 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 9 places, 8 transitions [2019-12-27 08:15:26,431 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 19 states. [2019-12-27 08:15:26,434 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-12-27 08:15:26,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-27 08:15:26,453 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:15:26,454 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-27 08:15:26,455 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:15:26,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:15:26,463 INFO L82 PathProgramCache]: Analyzing trace with hash 5761098, now seen corresponding path program 1 times [2019-12-27 08:15:26,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:15:26,471 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060915494] [2019-12-27 08:15:26,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:15:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:15:26,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:15:26,653 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060915494] [2019-12-27 08:15:26,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:15:26,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-27 08:15:26,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259181769] [2019-12-27 08:15:26,660 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 08:15:26,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:15:26,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 08:15:26,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 08:15:26,679 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2019-12-27 08:15:26,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:15:26,700 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2019-12-27 08:15:26,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 08:15:26,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-27 08:15:26,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:15:26,712 INFO L225 Difference]: With dead ends: 14 [2019-12-27 08:15:26,713 INFO L226 Difference]: Without dead ends: 11 [2019-12-27 08:15:26,714 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 08:15:26,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-12-27 08:15:26,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-12-27 08:15:26,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-27 08:15:26,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-12-27 08:15:26,749 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 4 [2019-12-27 08:15:26,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:15:26,750 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-12-27 08:15:26,750 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 08:15:26,750 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2019-12-27 08:15:26,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-27 08:15:26,750 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:15:26,751 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-12-27 08:15:26,751 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:15:26,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:15:26,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1241448245, now seen corresponding path program 1 times [2019-12-27 08:15:26,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:15:26,752 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681601575] [2019-12-27 08:15:26,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:15:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 08:15:26,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 08:15:26,826 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-27 08:15:26,827 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-27 08:15:26,831 WARN L364 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-27 08:15:26,832 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2019-12-27 08:15:26,843 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,844 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,844 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,844 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,845 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,845 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,845 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,846 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,846 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,847 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,847 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,847 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,847 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,848 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,848 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,848 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,849 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,850 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,850 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,851 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,851 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,852 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,852 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,852 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,852 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,853 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,853 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,854 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,854 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,855 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,855 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,855 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,855 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,856 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,856 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,856 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,863 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,863 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,863 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,864 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,864 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,864 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,864 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,864 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:26,866 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-27 08:15:26,866 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 08:15:26,867 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 08:15:26,867 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 08:15:26,867 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 08:15:26,867 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 08:15:26,867 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 08:15:26,867 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 08:15:26,867 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 08:15:26,870 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 56 transitions [2019-12-27 08:15:26,870 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 58 places, 56 transitions [2019-12-27 08:15:26,894 INFO L132 PetriNetUnfolder]: 5/78 cut-off events. [2019-12-27 08:15:26,895 INFO L133 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2019-12-27 08:15:26,897 INFO L76 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 78 events. 5/78 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 125 event pairs. 0/68 useless extension candidates. Maximal degree in co-relation 53. Up to 6 conditions per place. [2019-12-27 08:15:26,903 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 58 places, 56 transitions [2019-12-27 08:15:26,928 INFO L132 PetriNetUnfolder]: 5/78 cut-off events. [2019-12-27 08:15:26,929 INFO L133 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2019-12-27 08:15:26,930 INFO L76 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 78 events. 5/78 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 125 event pairs. 0/68 useless extension candidates. Maximal degree in co-relation 53. Up to 6 conditions per place. [2019-12-27 08:15:26,933 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 984 [2019-12-27 08:15:26,934 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-27 08:15:27,753 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1323 [2019-12-27 08:15:27,753 INFO L214 etLargeBlockEncoding]: Total number of compositions: 46 [2019-12-27 08:15:27,753 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 16 transitions [2019-12-27 08:15:27,764 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 179 states. [2019-12-27 08:15:27,765 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2019-12-27 08:15:27,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-27 08:15:27,765 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:15:27,766 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-27 08:15:27,766 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:15:27,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:15:27,766 INFO L82 PathProgramCache]: Analyzing trace with hash 291015221, now seen corresponding path program 1 times [2019-12-27 08:15:27,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:15:27,767 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181519341] [2019-12-27 08:15:27,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:15:27,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:15:27,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:15:27,817 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181519341] [2019-12-27 08:15:27,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:15:27,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 08:15:27,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965687076] [2019-12-27 08:15:27,818 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 08:15:27,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:15:27,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 08:15:27,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 08:15:27,819 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 4 states. [2019-12-27 08:15:27,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:15:27,871 INFO L93 Difference]: Finished difference Result 162 states and 334 transitions. [2019-12-27 08:15:27,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 08:15:27,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-12-27 08:15:27,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:15:27,876 INFO L225 Difference]: With dead ends: 162 [2019-12-27 08:15:27,876 INFO L226 Difference]: Without dead ends: 146 [2019-12-27 08:15:27,877 INFO L631 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 [2019-12-27 08:15:27,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-12-27 08:15:27,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 131. [2019-12-27 08:15:27,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2019-12-27 08:15:27,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 277 transitions. [2019-12-27 08:15:27,896 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 277 transitions. Word has length 5 [2019-12-27 08:15:27,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:15:27,897 INFO L462 AbstractCegarLoop]: Abstraction has 131 states and 277 transitions. [2019-12-27 08:15:27,897 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 08:15:27,897 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 277 transitions. [2019-12-27 08:15:27,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-27 08:15:27,898 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:15:27,898 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2019-12-27 08:15:27,899 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:15:27,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:15:27,899 INFO L82 PathProgramCache]: Analyzing trace with hash -2015404397, now seen corresponding path program 1 times [2019-12-27 08:15:27,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:15:27,900 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506035756] [2019-12-27 08:15:27,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:15:27,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 08:15:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 08:15:27,935 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-27 08:15:27,936 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-27 08:15:27,936 WARN L364 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-27 08:15:27,936 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2019-12-27 08:15:27,943 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,944 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,944 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,944 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,944 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,945 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,945 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,945 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,945 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,945 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,946 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,946 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,946 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,946 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,947 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,947 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,947 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,947 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,947 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,948 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,948 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,948 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,948 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,948 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,949 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,949 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,949 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,949 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,950 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,950 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,950 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,950 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,950 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,951 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,951 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,951 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,951 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,951 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,952 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,952 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,952 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,952 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,953 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,953 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,953 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,953 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,954 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,954 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,954 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,954 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,956 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,956 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,956 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,956 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,957 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,957 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,957 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,957 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,959 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,959 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,959 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,959 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,959 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,960 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,960 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,960 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:27,962 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-12-27 08:15:27,962 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 08:15:27,962 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 08:15:27,962 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 08:15:27,962 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 08:15:27,963 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 08:15:27,963 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 08:15:27,963 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 08:15:27,963 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 08:15:27,965 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 69 transitions [2019-12-27 08:15:27,965 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 72 places, 69 transitions [2019-12-27 08:15:27,985 INFO L132 PetriNetUnfolder]: 7/104 cut-off events. [2019-12-27 08:15:27,985 INFO L133 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2019-12-27 08:15:27,987 INFO L76 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 104 events. 7/104 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 181 event pairs. 0/90 useless extension candidates. Maximal degree in co-relation 82. Up to 8 conditions per place. [2019-12-27 08:15:27,991 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 72 places, 69 transitions [2019-12-27 08:15:28,022 INFO L132 PetriNetUnfolder]: 7/104 cut-off events. [2019-12-27 08:15:28,023 INFO L133 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2019-12-27 08:15:28,024 INFO L76 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 104 events. 7/104 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 181 event pairs. 0/90 useless extension candidates. Maximal degree in co-relation 82. Up to 8 conditions per place. [2019-12-27 08:15:28,028 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1944 [2019-12-27 08:15:28,028 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-27 08:15:29,017 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3045 [2019-12-27 08:15:29,018 INFO L214 etLargeBlockEncoding]: Total number of compositions: 60 [2019-12-27 08:15:29,018 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 21 transitions [2019-12-27 08:15:29,057 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 904 states. [2019-12-27 08:15:29,057 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states. [2019-12-27 08:15:29,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-27 08:15:29,058 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:15:29,058 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-27 08:15:29,058 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:15:29,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:15:29,059 INFO L82 PathProgramCache]: Analyzing trace with hash 430208582, now seen corresponding path program 1 times [2019-12-27 08:15:29,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:15:29,059 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316300904] [2019-12-27 08:15:29,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:15:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:15:29,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:15:29,120 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316300904] [2019-12-27 08:15:29,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:15:29,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 08:15:29,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488049758] [2019-12-27 08:15:29,121 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 08:15:29,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:15:29,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 08:15:29,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 08:15:29,122 INFO L87 Difference]: Start difference. First operand 904 states. Second operand 4 states. [2019-12-27 08:15:29,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:15:29,226 INFO L93 Difference]: Finished difference Result 642 states and 1833 transitions. [2019-12-27 08:15:29,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 08:15:29,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-12-27 08:15:29,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:15:29,238 INFO L225 Difference]: With dead ends: 642 [2019-12-27 08:15:29,239 INFO L226 Difference]: Without dead ends: 625 [2019-12-27 08:15:29,239 INFO L631 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 [2019-12-27 08:15:29,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2019-12-27 08:15:29,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 619. [2019-12-27 08:15:29,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2019-12-27 08:15:29,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 1777 transitions. [2019-12-27 08:15:29,310 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 1777 transitions. Word has length 5 [2019-12-27 08:15:29,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:15:29,310 INFO L462 AbstractCegarLoop]: Abstraction has 619 states and 1777 transitions. [2019-12-27 08:15:29,310 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 08:15:29,310 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 1777 transitions. [2019-12-27 08:15:29,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-27 08:15:29,312 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:15:29,312 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:15:29,312 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:15:29,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:15:29,313 INFO L82 PathProgramCache]: Analyzing trace with hash 802180161, now seen corresponding path program 1 times [2019-12-27 08:15:29,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:15:29,313 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337904557] [2019-12-27 08:15:29,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:15:29,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:15:29,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:15:29,382 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337904557] [2019-12-27 08:15:29,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:15:29,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-27 08:15:29,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366025909] [2019-12-27 08:15:29,384 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 08:15:29,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:15:29,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 08:15:29,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-27 08:15:29,385 INFO L87 Difference]: Start difference. First operand 619 states and 1777 transitions. Second operand 5 states. [2019-12-27 08:15:29,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:15:29,512 INFO L93 Difference]: Finished difference Result 1031 states and 2688 transitions. [2019-12-27 08:15:29,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 08:15:29,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-12-27 08:15:29,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:15:29,522 INFO L225 Difference]: With dead ends: 1031 [2019-12-27 08:15:29,522 INFO L226 Difference]: Without dead ends: 1025 [2019-12-27 08:15:29,523 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-27 08:15:29,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2019-12-27 08:15:29,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 823. [2019-12-27 08:15:29,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 823 states. [2019-12-27 08:15:29,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 2262 transitions. [2019-12-27 08:15:29,576 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 2262 transitions. Word has length 12 [2019-12-27 08:15:29,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:15:29,576 INFO L462 AbstractCegarLoop]: Abstraction has 823 states and 2262 transitions. [2019-12-27 08:15:29,576 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 08:15:29,577 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 2262 transitions. [2019-12-27 08:15:29,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-27 08:15:29,578 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:15:29,578 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:15:29,578 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:15:29,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:15:29,578 INFO L82 PathProgramCache]: Analyzing trace with hash -432656821, now seen corresponding path program 2 times [2019-12-27 08:15:29,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:15:29,579 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281649263] [2019-12-27 08:15:29,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:15:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:15:29,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:15:29,631 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281649263] [2019-12-27 08:15:29,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:15:29,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-27 08:15:29,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954629433] [2019-12-27 08:15:29,632 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 08:15:29,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:15:29,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 08:15:29,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-27 08:15:29,633 INFO L87 Difference]: Start difference. First operand 823 states and 2262 transitions. Second operand 5 states. [2019-12-27 08:15:29,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:15:29,744 INFO L93 Difference]: Finished difference Result 1131 states and 3048 transitions. [2019-12-27 08:15:29,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 08:15:29,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-12-27 08:15:29,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:15:29,753 INFO L225 Difference]: With dead ends: 1131 [2019-12-27 08:15:29,754 INFO L226 Difference]: Without dead ends: 1125 [2019-12-27 08:15:29,754 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-27 08:15:29,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2019-12-27 08:15:29,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 913. [2019-12-27 08:15:29,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 913 states. [2019-12-27 08:15:29,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 2546 transitions. [2019-12-27 08:15:29,788 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 2546 transitions. Word has length 12 [2019-12-27 08:15:29,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:15:29,789 INFO L462 AbstractCegarLoop]: Abstraction has 913 states and 2546 transitions. [2019-12-27 08:15:29,789 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 08:15:29,789 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 2546 transitions. [2019-12-27 08:15:29,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-27 08:15:29,790 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:15:29,790 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:15:29,791 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:15:29,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:15:29,791 INFO L82 PathProgramCache]: Analyzing trace with hash 125652077, now seen corresponding path program 3 times [2019-12-27 08:15:29,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:15:29,791 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372241398] [2019-12-27 08:15:29,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:15:29,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:15:29,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:15:29,880 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372241398] [2019-12-27 08:15:29,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:15:29,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-27 08:15:29,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072037578] [2019-12-27 08:15:29,883 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-27 08:15:29,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:15:29,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-27 08:15:29,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-27 08:15:29,884 INFO L87 Difference]: Start difference. First operand 913 states and 2546 transitions. Second operand 6 states. [2019-12-27 08:15:29,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:15:29,984 INFO L93 Difference]: Finished difference Result 845 states and 2368 transitions. [2019-12-27 08:15:29,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 08:15:29,985 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-12-27 08:15:29,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:15:29,990 INFO L225 Difference]: With dead ends: 845 [2019-12-27 08:15:29,991 INFO L226 Difference]: Without dead ends: 836 [2019-12-27 08:15:29,991 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-27 08:15:29,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2019-12-27 08:15:30,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 639. [2019-12-27 08:15:30,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2019-12-27 08:15:30,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1800 transitions. [2019-12-27 08:15:30,013 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1800 transitions. Word has length 12 [2019-12-27 08:15:30,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:15:30,013 INFO L462 AbstractCegarLoop]: Abstraction has 639 states and 1800 transitions. [2019-12-27 08:15:30,013 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-27 08:15:30,014 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1800 transitions. [2019-12-27 08:15:30,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-27 08:15:30,016 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:15:30,016 INFO L411 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2019-12-27 08:15:30,016 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:15:30,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:15:30,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1528779804, now seen corresponding path program 1 times [2019-12-27 08:15:30,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:15:30,017 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245571927] [2019-12-27 08:15:30,017 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:15:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 08:15:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 08:15:30,047 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-27 08:15:30,047 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-27 08:15:30,047 WARN L364 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-27 08:15:30,048 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2019-12-27 08:15:30,057 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,057 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,057 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,057 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,058 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,058 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,058 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,058 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,058 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,058 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,059 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,059 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,059 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,059 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,060 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,060 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,060 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,060 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,061 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,061 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,061 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,061 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,061 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,062 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,066 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,066 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,066 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,067 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,067 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,067 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,067 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,067 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,068 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,069 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,069 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,069 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,070 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,070 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,070 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,070 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,070 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,070 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,073 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,073 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,073 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,073 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,074 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,074 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,074 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,074 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,074 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,074 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,075 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,076 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,076 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,076 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,076 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,077 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,077 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,077 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,077 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,077 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,077 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,078 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,084 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,085 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,085 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,085 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,085 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,085 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,086 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,087 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,088 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,088 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,089 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,089 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,089 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,089 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,089 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,089 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,091 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,091 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,091 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,091 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,091 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,092 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,092 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,092 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:30,094 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-12-27 08:15:30,094 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 08:15:30,094 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 08:15:30,095 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 08:15:30,095 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 08:15:30,095 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 08:15:30,095 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 08:15:30,095 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 08:15:30,095 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 08:15:30,096 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 82 transitions [2019-12-27 08:15:30,096 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 86 places, 82 transitions [2019-12-27 08:15:30,118 INFO L132 PetriNetUnfolder]: 9/130 cut-off events. [2019-12-27 08:15:30,118 INFO L133 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2019-12-27 08:15:30,121 INFO L76 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 130 events. 9/130 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 241 event pairs. 0/112 useless extension candidates. Maximal degree in co-relation 112. Up to 10 conditions per place. [2019-12-27 08:15:30,127 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 86 places, 82 transitions [2019-12-27 08:15:30,148 INFO L132 PetriNetUnfolder]: 9/130 cut-off events. [2019-12-27 08:15:30,148 INFO L133 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2019-12-27 08:15:30,151 INFO L76 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 130 events. 9/130 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 241 event pairs. 0/112 useless extension candidates. Maximal degree in co-relation 112. Up to 10 conditions per place. [2019-12-27 08:15:30,158 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3216 [2019-12-27 08:15:30,159 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-27 08:15:31,254 INFO L206 etLargeBlockEncoding]: Checked pairs total: 6321 [2019-12-27 08:15:31,255 INFO L214 etLargeBlockEncoding]: Total number of compositions: 65 [2019-12-27 08:15:31,255 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 35 transitions [2019-12-27 08:15:32,164 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 11729 states. [2019-12-27 08:15:32,164 INFO L276 IsEmpty]: Start isEmpty. Operand 11729 states. [2019-12-27 08:15:32,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-27 08:15:32,165 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:15:32,165 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-27 08:15:32,165 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:15:32,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:15:32,165 INFO L82 PathProgramCache]: Analyzing trace with hash 584056695, now seen corresponding path program 1 times [2019-12-27 08:15:32,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:15:32,166 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790916971] [2019-12-27 08:15:32,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:15:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:15:32,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:15:32,193 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790916971] [2019-12-27 08:15:32,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:15:32,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 08:15:32,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046096478] [2019-12-27 08:15:32,194 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 08:15:32,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:15:32,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 08:15:32,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 08:15:32,195 INFO L87 Difference]: Start difference. First operand 11729 states. Second operand 4 states. [2019-12-27 08:15:32,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:15:32,673 INFO L93 Difference]: Finished difference Result 19520 states and 72545 transitions. [2019-12-27 08:15:32,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 08:15:32,674 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-12-27 08:15:32,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:15:32,821 INFO L225 Difference]: With dead ends: 19520 [2019-12-27 08:15:32,822 INFO L226 Difference]: Without dead ends: 18914 [2019-12-27 08:15:32,822 INFO L631 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 [2019-12-27 08:15:32,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18914 states. [2019-12-27 08:15:33,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18914 to 14835. [2019-12-27 08:15:33,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14835 states. [2019-12-27 08:15:33,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14835 states to 14835 states and 58367 transitions. [2019-12-27 08:15:33,662 INFO L78 Accepts]: Start accepts. Automaton has 14835 states and 58367 transitions. Word has length 5 [2019-12-27 08:15:33,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:15:33,662 INFO L462 AbstractCegarLoop]: Abstraction has 14835 states and 58367 transitions. [2019-12-27 08:15:33,662 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 08:15:33,662 INFO L276 IsEmpty]: Start isEmpty. Operand 14835 states and 58367 transitions. [2019-12-27 08:15:33,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-27 08:15:33,663 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:15:33,663 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:15:33,664 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:15:33,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:15:33,664 INFO L82 PathProgramCache]: Analyzing trace with hash -749347680, now seen corresponding path program 1 times [2019-12-27 08:15:33,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:15:33,665 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645331261] [2019-12-27 08:15:33,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:15:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:15:33,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:15:33,716 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645331261] [2019-12-27 08:15:33,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:15:33,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 08:15:33,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437074901] [2019-12-27 08:15:33,717 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 08:15:33,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:15:33,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 08:15:33,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-27 08:15:33,719 INFO L87 Difference]: Start difference. First operand 14835 states and 58367 transitions. Second operand 5 states. [2019-12-27 08:15:33,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:15:33,962 INFO L93 Difference]: Finished difference Result 16150 states and 60711 transitions. [2019-12-27 08:15:33,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 08:15:33,963 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-12-27 08:15:33,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:15:34,034 INFO L225 Difference]: With dead ends: 16150 [2019-12-27 08:15:34,034 INFO L226 Difference]: Without dead ends: 15461 [2019-12-27 08:15:34,035 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-27 08:15:34,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15461 states. [2019-12-27 08:15:35,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15461 to 9319. [2019-12-27 08:15:35,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9319 states. [2019-12-27 08:15:35,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9319 states to 9319 states and 36952 transitions. [2019-12-27 08:15:35,441 INFO L78 Accepts]: Start accepts. Automaton has 9319 states and 36952 transitions. Word has length 12 [2019-12-27 08:15:35,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:15:35,441 INFO L462 AbstractCegarLoop]: Abstraction has 9319 states and 36952 transitions. [2019-12-27 08:15:35,441 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 08:15:35,441 INFO L276 IsEmpty]: Start isEmpty. Operand 9319 states and 36952 transitions. [2019-12-27 08:15:35,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-27 08:15:35,444 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:15:35,445 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:15:35,445 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:15:35,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:15:35,445 INFO L82 PathProgramCache]: Analyzing trace with hash -14296948, now seen corresponding path program 1 times [2019-12-27 08:15:35,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:15:35,446 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934290356] [2019-12-27 08:15:35,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:15:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:15:35,524 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:15:35,525 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934290356] [2019-12-27 08:15:35,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:15:35,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-27 08:15:35,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966943441] [2019-12-27 08:15:35,526 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-27 08:15:35,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:15:35,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-27 08:15:35,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-27 08:15:35,527 INFO L87 Difference]: Start difference. First operand 9319 states and 36952 transitions. Second operand 6 states. [2019-12-27 08:15:35,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:15:35,708 INFO L93 Difference]: Finished difference Result 9032 states and 35391 transitions. [2019-12-27 08:15:35,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 08:15:35,709 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2019-12-27 08:15:35,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:15:35,747 INFO L225 Difference]: With dead ends: 9032 [2019-12-27 08:15:35,748 INFO L226 Difference]: Without dead ends: 8453 [2019-12-27 08:15:35,748 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-27 08:15:35,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8453 states. [2019-12-27 08:15:35,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8453 to 5957. [2019-12-27 08:15:35,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5957 states. [2019-12-27 08:15:35,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5957 states to 5957 states and 23771 transitions. [2019-12-27 08:15:35,940 INFO L78 Accepts]: Start accepts. Automaton has 5957 states and 23771 transitions. Word has length 19 [2019-12-27 08:15:35,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:15:35,942 INFO L462 AbstractCegarLoop]: Abstraction has 5957 states and 23771 transitions. [2019-12-27 08:15:35,942 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-27 08:15:35,942 INFO L276 IsEmpty]: Start isEmpty. Operand 5957 states and 23771 transitions. [2019-12-27 08:15:35,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-27 08:15:35,947 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:15:35,947 INFO L411 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2019-12-27 08:15:35,947 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:15:35,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:15:35,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1602541199, now seen corresponding path program 1 times [2019-12-27 08:15:35,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:15:35,949 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699992407] [2019-12-27 08:15:35,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:15:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 08:15:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 08:15:36,010 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-27 08:15:36,011 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-27 08:15:36,011 WARN L364 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-27 08:15:36,011 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2019-12-27 08:15:36,026 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,027 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,027 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,027 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,027 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,027 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,027 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,028 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,028 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,028 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,028 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,028 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,028 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,028 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,029 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,029 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,029 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,029 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,029 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,029 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,030 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,030 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,030 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,030 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,030 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,031 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,031 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,032 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,032 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,032 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,032 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,032 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,032 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,033 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,033 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,033 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,033 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,034 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,034 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,034 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,034 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,034 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,035 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,035 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,035 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,035 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,035 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,035 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,035 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,036 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,036 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,036 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,036 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,036 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,036 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,036 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,037 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,037 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,037 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,038 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,038 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,038 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,038 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,038 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,038 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,038 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,039 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,039 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,039 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,039 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,040 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,040 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,040 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,040 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,040 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,040 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,041 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,041 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,042 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,042 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,043 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,043 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,043 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,043 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,043 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,043 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,045 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,045 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,045 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,045 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,045 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,046 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,046 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,046 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,047 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,047 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,048 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,048 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,048 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,048 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,048 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,048 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,051 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,051 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,051 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,051 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,051 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,051 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,052 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,054 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:15:36,055 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-12-27 08:15:36,055 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 08:15:36,056 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 08:15:36,056 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 08:15:36,056 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 08:15:36,056 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 08:15:36,056 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 08:15:36,056 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 08:15:36,056 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 08:15:36,058 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 95 transitions [2019-12-27 08:15:36,058 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 100 places, 95 transitions [2019-12-27 08:15:36,082 INFO L132 PetriNetUnfolder]: 11/156 cut-off events. [2019-12-27 08:15:36,082 INFO L133 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2019-12-27 08:15:36,085 INFO L76 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 156 events. 11/156 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 307 event pairs. 0/134 useless extension candidates. Maximal degree in co-relation 143. Up to 12 conditions per place. [2019-12-27 08:15:36,095 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 100 places, 95 transitions [2019-12-27 08:15:36,120 INFO L132 PetriNetUnfolder]: 11/156 cut-off events. [2019-12-27 08:15:36,120 INFO L133 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2019-12-27 08:15:36,123 INFO L76 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 156 events. 11/156 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 307 event pairs. 0/134 useless extension candidates. Maximal degree in co-relation 143. Up to 12 conditions per place. [2019-12-27 08:15:36,133 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 4800 [2019-12-27 08:15:36,133 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-27 08:15:36,339 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2019-12-27 08:15:37,480 INFO L206 etLargeBlockEncoding]: Checked pairs total: 8985 [2019-12-27 08:15:37,480 INFO L214 etLargeBlockEncoding]: Total number of compositions: 75 [2019-12-27 08:15:37,480 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 40 transitions [2019-12-27 08:15:47,125 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 59004 states. [2019-12-27 08:15:47,126 INFO L276 IsEmpty]: Start isEmpty. Operand 59004 states. [2019-12-27 08:15:47,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-27 08:15:47,126 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:15:47,126 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-27 08:15:47,127 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:15:47,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:15:47,127 INFO L82 PathProgramCache]: Analyzing trace with hash 762052463, now seen corresponding path program 1 times [2019-12-27 08:15:47,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:15:47,127 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312526103] [2019-12-27 08:15:47,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:15:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:15:47,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:15:47,155 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312526103] [2019-12-27 08:15:47,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:15:47,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 08:15:47,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391929506] [2019-12-27 08:15:47,156 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 08:15:47,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:15:47,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 08:15:47,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 08:15:47,157 INFO L87 Difference]: Start difference. First operand 59004 states. Second operand 4 states. [2019-12-27 08:15:47,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:15:47,912 INFO L93 Difference]: Finished difference Result 108259 states and 469253 transitions. [2019-12-27 08:15:47,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 08:15:47,912 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-12-27 08:15:47,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:15:48,351 INFO L225 Difference]: With dead ends: 108259 [2019-12-27 08:15:48,351 INFO L226 Difference]: Without dead ends: 107001 [2019-12-27 08:15:48,352 INFO L631 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 [2019-12-27 08:15:51,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107001 states. [2019-12-27 08:15:55,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107001 to 88703. [2019-12-27 08:15:55,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88703 states. [2019-12-27 08:15:55,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88703 states to 88703 states and 399070 transitions. [2019-12-27 08:15:55,937 INFO L78 Accepts]: Start accepts. Automaton has 88703 states and 399070 transitions. Word has length 5 [2019-12-27 08:15:55,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:15:55,937 INFO L462 AbstractCegarLoop]: Abstraction has 88703 states and 399070 transitions. [2019-12-27 08:15:55,937 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 08:15:55,937 INFO L276 IsEmpty]: Start isEmpty. Operand 88703 states and 399070 transitions. [2019-12-27 08:15:55,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-27 08:15:55,938 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:15:55,938 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:15:55,938 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:15:55,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:15:55,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1764633640, now seen corresponding path program 1 times [2019-12-27 08:15:55,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:15:55,939 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129043892] [2019-12-27 08:15:55,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:15:55,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:15:55,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:15:55,983 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129043892] [2019-12-27 08:15:55,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:15:55,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 08:15:55,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263435831] [2019-12-27 08:15:55,985 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 08:15:55,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:15:55,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 08:15:55,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-27 08:15:55,986 INFO L87 Difference]: Start difference. First operand 88703 states and 399070 transitions. Second operand 5 states. [2019-12-27 08:16:00,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:16:00,096 INFO L93 Difference]: Finished difference Result 104350 states and 444312 transitions. [2019-12-27 08:16:00,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 08:16:00,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-12-27 08:16:00,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:16:00,510 INFO L225 Difference]: With dead ends: 104350 [2019-12-27 08:16:00,511 INFO L226 Difference]: Without dead ends: 102488 [2019-12-27 08:16:00,511 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-27 08:16:00,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102488 states. [2019-12-27 08:16:02,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102488 to 56523. [2019-12-27 08:16:02,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56523 states. [2019-12-27 08:16:02,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56523 states to 56523 states and 251087 transitions. [2019-12-27 08:16:02,378 INFO L78 Accepts]: Start accepts. Automaton has 56523 states and 251087 transitions. Word has length 12 [2019-12-27 08:16:02,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:16:02,378 INFO L462 AbstractCegarLoop]: Abstraction has 56523 states and 251087 transitions. [2019-12-27 08:16:02,378 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 08:16:02,378 INFO L276 IsEmpty]: Start isEmpty. Operand 56523 states and 251087 transitions. [2019-12-27 08:16:02,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-27 08:16:02,381 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:16:02,381 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:16:02,381 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:16:02,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:16:02,381 INFO L82 PathProgramCache]: Analyzing trace with hash -181006804, now seen corresponding path program 1 times [2019-12-27 08:16:02,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:16:02,382 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990947137] [2019-12-27 08:16:02,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:16:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:16:02,460 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:16:02,460 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990947137] [2019-12-27 08:16:02,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:16:02,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-27 08:16:02,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433818884] [2019-12-27 08:16:02,461 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-27 08:16:02,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:16:02,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-27 08:16:02,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-27 08:16:02,462 INFO L87 Difference]: Start difference. First operand 56523 states and 251087 transitions. Second operand 6 states. [2019-12-27 08:16:02,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:16:02,894 INFO L93 Difference]: Finished difference Result 52899 states and 232176 transitions. [2019-12-27 08:16:02,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 08:16:02,894 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2019-12-27 08:16:02,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:16:03,740 INFO L225 Difference]: With dead ends: 52899 [2019-12-27 08:16:03,741 INFO L226 Difference]: Without dead ends: 50484 [2019-12-27 08:16:03,741 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-27 08:16:03,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50484 states. [2019-12-27 08:16:04,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50484 to 31613. [2019-12-27 08:16:04,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31613 states. [2019-12-27 08:16:04,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31613 states to 31613 states and 144669 transitions. [2019-12-27 08:16:04,530 INFO L78 Accepts]: Start accepts. Automaton has 31613 states and 144669 transitions. Word has length 19 [2019-12-27 08:16:04,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:16:04,531 INFO L462 AbstractCegarLoop]: Abstraction has 31613 states and 144669 transitions. [2019-12-27 08:16:04,531 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-27 08:16:04,531 INFO L276 IsEmpty]: Start isEmpty. Operand 31613 states and 144669 transitions. [2019-12-27 08:16:04,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-27 08:16:04,539 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:16:04,539 INFO L411 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:16:04,539 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:16:04,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:16:04,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1715173987, now seen corresponding path program 1 times [2019-12-27 08:16:04,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:16:04,540 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966480517] [2019-12-27 08:16:04,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:16:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 08:16:04,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 08:16:04,565 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-27 08:16:04,565 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-27 08:16:04,565 WARN L364 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-27 08:16:04,566 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2019-12-27 08:16:04,575 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,575 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,576 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,576 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,576 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,576 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,576 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,576 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,576 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,577 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,577 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,577 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,577 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,577 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,577 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,578 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,578 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,578 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,578 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,578 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,578 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,578 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,578 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,579 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,579 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,579 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,579 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,579 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,579 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,580 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,580 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,580 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,580 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,580 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,580 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,580 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,580 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,581 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,581 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,581 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,581 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,581 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,581 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,582 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,582 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,582 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,582 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,582 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,582 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,582 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,582 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,583 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,583 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,583 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,583 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,583 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,583 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,584 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,584 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,584 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,584 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,584 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,584 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,585 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,585 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,585 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,585 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,585 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,585 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,585 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,586 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,586 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,586 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,586 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,586 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,586 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,586 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,587 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,587 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,587 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,587 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,587 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,587 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,587 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,588 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,588 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,588 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,588 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,588 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,588 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,589 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,589 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,590 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,591 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,591 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,591 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,591 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,591 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,591 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,591 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,593 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,593 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,593 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,593 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,593 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,594 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,594 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,594 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,595 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,596 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,596 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,596 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,596 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,596 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,596 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,596 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,598 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,598 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,598 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,598 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,598 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,599 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,599 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,599 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,600 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,600 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,601 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,601 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,601 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,601 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,601 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,601 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:16:04,603 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-12-27 08:16:04,603 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 08:16:04,603 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 08:16:04,603 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 08:16:04,603 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 08:16:04,603 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 08:16:04,603 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 08:16:04,604 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 08:16:04,604 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 08:16:04,605 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 108 transitions [2019-12-27 08:16:04,605 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 114 places, 108 transitions [2019-12-27 08:16:04,632 INFO L132 PetriNetUnfolder]: 13/182 cut-off events. [2019-12-27 08:16:04,633 INFO L133 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2019-12-27 08:16:04,637 INFO L76 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 182 events. 13/182 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 391 event pairs. 0/156 useless extension candidates. Maximal degree in co-relation 175. Up to 14 conditions per place. [2019-12-27 08:16:04,650 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 114 places, 108 transitions [2019-12-27 08:16:04,677 INFO L132 PetriNetUnfolder]: 13/182 cut-off events. [2019-12-27 08:16:04,677 INFO L133 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2019-12-27 08:16:04,681 INFO L76 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 182 events. 13/182 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 391 event pairs. 0/156 useless extension candidates. Maximal degree in co-relation 175. Up to 14 conditions per place. [2019-12-27 08:16:04,695 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 6696 [2019-12-27 08:16:04,695 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-27 08:16:05,620 WARN L192 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2019-12-27 08:16:06,301 INFO L206 etLargeBlockEncoding]: Checked pairs total: 10256 [2019-12-27 08:16:06,301 INFO L214 etLargeBlockEncoding]: Total number of compositions: 91 [2019-12-27 08:16:06,301 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 44 places, 39 transitions [2019-12-27 08:16:51,644 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 158579 states. [2019-12-27 08:16:51,644 INFO L276 IsEmpty]: Start isEmpty. Operand 158579 states. [2019-12-27 08:16:51,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-27 08:16:51,645 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:16:51,645 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-27 08:16:51,645 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:16:51,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:16:51,645 INFO L82 PathProgramCache]: Analyzing trace with hash 969802902, now seen corresponding path program 1 times [2019-12-27 08:16:51,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:16:51,646 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994429409] [2019-12-27 08:16:51,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:16:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:16:51,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:16:51,687 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994429409] [2019-12-27 08:16:51,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:16:51,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 08:16:51,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465049244] [2019-12-27 08:16:51,687 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 08:16:51,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:16:51,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 08:16:51,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 08:16:51,688 INFO L87 Difference]: Start difference. First operand 158579 states. Second operand 4 states. [2019-12-27 08:16:53,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:16:53,244 INFO L93 Difference]: Finished difference Result 127586 states and 674606 transitions. [2019-12-27 08:16:53,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 08:16:53,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-12-27 08:16:53,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:16:55,064 INFO L225 Difference]: With dead ends: 127586 [2019-12-27 08:16:55,065 INFO L226 Difference]: Without dead ends: 127331 [2019-12-27 08:16:55,065 INFO L631 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 [2019-12-27 08:17:01,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127331 states. [2019-12-27 08:17:04,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127331 to 123683. [2019-12-27 08:17:04,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123683 states. [2019-12-27 08:17:05,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123683 states to 123683 states and 660397 transitions. [2019-12-27 08:17:05,339 INFO L78 Accepts]: Start accepts. Automaton has 123683 states and 660397 transitions. Word has length 5 [2019-12-27 08:17:05,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:17:05,339 INFO L462 AbstractCegarLoop]: Abstraction has 123683 states and 660397 transitions. [2019-12-27 08:17:05,339 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 08:17:05,339 INFO L276 IsEmpty]: Start isEmpty. Operand 123683 states and 660397 transitions. [2019-12-27 08:17:05,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-27 08:17:05,340 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:17:05,340 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:17:05,340 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:17:05,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:17:05,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1678884846, now seen corresponding path program 1 times [2019-12-27 08:17:05,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:17:05,341 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161794459] [2019-12-27 08:17:05,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:17:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:17:05,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:17:05,388 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161794459] [2019-12-27 08:17:05,388 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392730726] [2019-12-27 08:17:05,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:17:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:17:05,465 INFO L264 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-27 08:17:05,467 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:17:05,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:17:05,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-27 08:17:05,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2019-12-27 08:17:05,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767864485] [2019-12-27 08:17:05,535 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-27 08:17:05,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:17:05,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-27 08:17:05,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-12-27 08:17:05,536 INFO L87 Difference]: Start difference. First operand 123683 states and 660397 transitions. Second operand 6 states. [2019-12-27 08:17:07,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:17:07,881 INFO L93 Difference]: Finished difference Result 140187 states and 754064 transitions. [2019-12-27 08:17:07,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 08:17:07,882 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-12-27 08:17:07,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:17:08,400 INFO L225 Difference]: With dead ends: 140187 [2019-12-27 08:17:08,400 INFO L226 Difference]: Without dead ends: 140169 [2019-12-27 08:17:08,401 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-12-27 08:17:17,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140169 states. [2019-12-27 08:17:21,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140169 to 140109. [2019-12-27 08:17:21,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140109 states. [2019-12-27 08:17:30,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140109 states to 140109 states and 753681 transitions. [2019-12-27 08:17:30,215 INFO L78 Accepts]: Start accepts. Automaton has 140109 states and 753681 transitions. Word has length 12 [2019-12-27 08:17:30,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:17:30,215 INFO L462 AbstractCegarLoop]: Abstraction has 140109 states and 753681 transitions. [2019-12-27 08:17:30,215 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-27 08:17:30,215 INFO L276 IsEmpty]: Start isEmpty. Operand 140109 states and 753681 transitions. [2019-12-27 08:17:30,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-27 08:17:30,216 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:17:30,216 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:17:30,417 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:17:30,417 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:17:30,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:17:30,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1677718221, now seen corresponding path program 1 times [2019-12-27 08:17:30,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:17:30,419 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194152358] [2019-12-27 08:17:30,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:17:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:17:30,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 08:17:30,473 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194152358] [2019-12-27 08:17:30,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:17:30,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-27 08:17:30,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575519648] [2019-12-27 08:17:30,475 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 08:17:30,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:17:30,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 08:17:30,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-27 08:17:30,475 INFO L87 Difference]: Start difference. First operand 140109 states and 753681 transitions. Second operand 5 states. [2019-12-27 08:17:39,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:17:39,094 INFO L93 Difference]: Finished difference Result 244158 states and 1163457 transitions. [2019-12-27 08:17:39,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 08:17:39,094 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-12-27 08:17:39,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:17:39,883 INFO L225 Difference]: With dead ends: 244158 [2019-12-27 08:17:39,884 INFO L226 Difference]: Without dead ends: 244116 [2019-12-27 08:17:39,884 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-27 08:17:41,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244116 states. [2019-12-27 08:17:45,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244116 to 189027. [2019-12-27 08:17:45,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189027 states. [2019-12-27 08:17:47,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189027 states to 189027 states and 905779 transitions. [2019-12-27 08:17:47,213 INFO L78 Accepts]: Start accepts. Automaton has 189027 states and 905779 transitions. Word has length 12 [2019-12-27 08:17:47,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:17:47,213 INFO L462 AbstractCegarLoop]: Abstraction has 189027 states and 905779 transitions. [2019-12-27 08:17:47,213 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 08:17:47,213 INFO L276 IsEmpty]: Start isEmpty. Operand 189027 states and 905779 transitions. [2019-12-27 08:17:47,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-27 08:17:47,215 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:17:47,215 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:17:47,215 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:17:47,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:17:47,216 INFO L82 PathProgramCache]: Analyzing trace with hash -374516441, now seen corresponding path program 1 times [2019-12-27 08:17:47,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:17:47,216 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777768957] [2019-12-27 08:17:47,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:17:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:17:47,290 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:17:47,290 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777768957] [2019-12-27 08:17:47,291 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147715042] [2019-12-27 08:17:47,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:17:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:17:47,367 INFO L264 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-27 08:17:47,368 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:17:47,436 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:17:47,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:17:47,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 11 [2019-12-27 08:17:47,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509017257] [2019-12-27 08:17:47,437 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-27 08:17:47,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:17:47,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-27 08:17:47,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-12-27 08:17:47,438 INFO L87 Difference]: Start difference. First operand 189027 states and 905779 transitions. Second operand 13 states. [2019-12-27 08:17:56,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:17:56,603 INFO L93 Difference]: Finished difference Result 310634 states and 1476067 transitions. [2019-12-27 08:17:56,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-12-27 08:17:56,603 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 19 [2019-12-27 08:17:56,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:17:57,562 INFO L225 Difference]: With dead ends: 310634 [2019-12-27 08:17:57,563 INFO L226 Difference]: Without dead ends: 309930 [2019-12-27 08:17:57,563 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2019-12-27 08:18:05,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309930 states. [2019-12-27 08:18:10,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309930 to 221959. [2019-12-27 08:18:10,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221959 states. [2019-12-27 08:18:11,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221959 states to 221959 states and 1049093 transitions. [2019-12-27 08:18:11,577 INFO L78 Accepts]: Start accepts. Automaton has 221959 states and 1049093 transitions. Word has length 19 [2019-12-27 08:18:11,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:18:11,578 INFO L462 AbstractCegarLoop]: Abstraction has 221959 states and 1049093 transitions. [2019-12-27 08:18:11,578 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-27 08:18:11,578 INFO L276 IsEmpty]: Start isEmpty. Operand 221959 states and 1049093 transitions. [2019-12-27 08:18:11,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-27 08:18:11,579 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:18:11,580 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:18:11,782 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:18:11,783 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:18:11,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:18:11,784 INFO L82 PathProgramCache]: Analyzing trace with hash 696385227, now seen corresponding path program 1 times [2019-12-27 08:18:11,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:18:11,784 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134033985] [2019-12-27 08:18:11,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:18:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:18:11,851 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:18:11,851 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134033985] [2019-12-27 08:18:11,851 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964686740] [2019-12-27 08:18:11,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:18:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:18:19,895 INFO L264 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-27 08:18:19,896 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:18:19,963 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:18:19,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-27 08:18:19,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 11 [2019-12-27 08:18:19,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62282932] [2019-12-27 08:18:19,964 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-27 08:18:19,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:18:19,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-27 08:18:19,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2019-12-27 08:18:19,965 INFO L87 Difference]: Start difference. First operand 221959 states and 1049093 transitions. Second operand 8 states. [2019-12-27 08:18:22,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:18:22,353 INFO L93 Difference]: Finished difference Result 238629 states and 1131409 transitions. [2019-12-27 08:18:22,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-27 08:18:22,353 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-12-27 08:18:22,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:18:23,143 INFO L225 Difference]: With dead ends: 238629 [2019-12-27 08:18:23,143 INFO L226 Difference]: Without dead ends: 238590 [2019-12-27 08:18:23,143 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2019-12-27 08:18:30,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238590 states. [2019-12-27 08:18:34,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238590 to 206162. [2019-12-27 08:18:34,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206162 states. [2019-12-27 08:18:36,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206162 states to 206162 states and 970090 transitions. [2019-12-27 08:18:36,714 INFO L78 Accepts]: Start accepts. Automaton has 206162 states and 970090 transitions. Word has length 19 [2019-12-27 08:18:36,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:18:36,715 INFO L462 AbstractCegarLoop]: Abstraction has 206162 states and 970090 transitions. [2019-12-27 08:18:36,715 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-27 08:18:36,715 INFO L276 IsEmpty]: Start isEmpty. Operand 206162 states and 970090 transitions. [2019-12-27 08:18:36,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-27 08:18:36,717 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:18:36,717 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:18:36,917 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:18:36,918 INFO L410 AbstractCegarLoop]: === Iteration 6 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:18:36,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:18:36,919 INFO L82 PathProgramCache]: Analyzing trace with hash 701661723, now seen corresponding path program 2 times [2019-12-27 08:18:36,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:18:36,919 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757871922] [2019-12-27 08:18:36,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:18:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:18:36,976 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-12-27 08:18:36,977 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757871922] [2019-12-27 08:18:36,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:18:36,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-27 08:18:36,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379486167] [2019-12-27 08:18:36,978 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-27 08:18:36,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:18:36,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-27 08:18:36,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-27 08:18:36,979 INFO L87 Difference]: Start difference. First operand 206162 states and 970090 transitions. Second operand 6 states. Received shutdown request... [2019-12-27 08:18:45,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-27 08:18:45,584 WARN L527 AbstractCegarLoop]: Verification canceled [2019-12-27 08:18:45,589 WARN L227 ceAbstractionStarter]: Timeout [2019-12-27 08:18:45,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 08:18:45 BasicIcfg [2019-12-27 08:18:45,589 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 08:18:45,591 INFO L168 Benchmark]: Toolchain (without parser) took 201632.75 ms. Allocated memory was 136.8 MB in the beginning and 4.7 GB in the end (delta: 4.6 GB). Free memory was 100.4 MB in the beginning and 2.9 GB in the end (delta: -2.8 GB). Peak memory consumption was 4.4 GB. Max. memory is 7.1 GB. [2019-12-27 08:18:45,592 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-12-27 08:18:45,592 INFO L168 Benchmark]: CACSL2BoogieTranslator took 664.39 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 100.1 MB in the beginning and 160.8 MB in the end (delta: -60.6 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2019-12-27 08:18:45,593 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.86 ms. Allocated memory is still 201.3 MB. Free memory was 160.8 MB in the beginning and 158.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-12-27 08:18:45,593 INFO L168 Benchmark]: Boogie Preprocessor took 32.35 ms. Allocated memory is still 201.3 MB. Free memory was 158.7 MB in the beginning and 157.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-12-27 08:18:45,594 INFO L168 Benchmark]: RCFGBuilder took 356.35 ms. Allocated memory is still 201.3 MB. Free memory was 157.2 MB in the beginning and 139.6 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. [2019-12-27 08:18:45,595 INFO L168 Benchmark]: TraceAbstraction took 200519.59 ms. Allocated memory was 201.3 MB in the beginning and 4.7 GB in the end (delta: 4.5 GB). Free memory was 138.9 MB in the beginning and 2.9 GB in the end (delta: -2.8 GB). Peak memory consumption was 4.3 GB. Max. memory is 7.1 GB. [2019-12-27 08:18:45,598 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 664.39 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 100.1 MB in the beginning and 160.8 MB in the end (delta: -60.6 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.86 ms. Allocated memory is still 201.3 MB. Free memory was 160.8 MB in the beginning and 158.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.35 ms. Allocated memory is still 201.3 MB. Free memory was 158.7 MB in the beginning and 157.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 356.35 ms. Allocated memory is still 201.3 MB. Free memory was 157.2 MB in the beginning and 139.6 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 200519.59 ms. Allocated memory was 201.3 MB in the beginning and 4.7 GB in the end (delta: 4.5 GB). Free memory was 138.9 MB in the beginning and 2.9 GB in the end (delta: -2.8 GB). Peak memory consumption was 4.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.2s, 44 ProgramPointsBefore, 9 ProgramPointsAfterwards, 43 TransitionsBefore, 8 TransitionsAfterwards, 336 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 2 ChoiceCompositions, 169 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 243 CheckedPairsTotal, 40 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.8s, 58 ProgramPointsBefore, 18 ProgramPointsAfterwards, 56 TransitionsBefore, 16 TransitionsAfterwards, 984 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 501 VarBasedMoverChecksPositive, 18 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1323 CheckedPairsTotal, 46 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.0s, 72 ProgramPointsBefore, 24 ProgramPointsAfterwards, 69 TransitionsBefore, 21 TransitionsAfterwards, 1944 CoEnabledTransitionPairs, 7 FixpointIterations, 15 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 4 ChoiceCompositions, 964 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 3045 CheckedPairsTotal, 60 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.1s, 86 ProgramPointsBefore, 36 ProgramPointsAfterwards, 82 TransitionsBefore, 35 TransitionsAfterwards, 3216 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 1632 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 6321 CheckedPairsTotal, 65 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 100 ProgramPointsBefore, 42 ProgramPointsAfterwards, 95 TransitionsBefore, 40 TransitionsAfterwards, 4800 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 3 ChoiceCompositions, 2333 VarBasedMoverChecksPositive, 56 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 8985 CheckedPairsTotal, 75 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 114 ProgramPointsBefore, 44 ProgramPointsAfterwards, 108 TransitionsBefore, 39 TransitionsAfterwards, 6696 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 66 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 6 ChoiceCompositions, 3345 VarBasedMoverChecksPositive, 45 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 10256 CheckedPairsTotal, 91 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 676]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 676). Cancelled while BasicCegarLoop was constructing difference of abstraction (206162states) and FLOYD_HOARE automaton (currently 7 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (167745 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 41 locations, 1 error locations. Result: TIMEOUT, OverallTime: 160.9s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 37.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 223 SDtfs, 639 SDslu, 518 SDs, 0 SdLazy, 1227 SolverSat, 336 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=221959occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 67.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 179196 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 127 ConstructedInterpolants, 0 QuantifiedInterpolants, 11491 SizeOfPredicates, 0 NumberOfNonLiveVariables, 249 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 26/46 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown