/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-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-array-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 19:25:55,765 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 19:25:55,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 19:25:55,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 19:25:55,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 19:25:55,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 19:25:55,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 19:25:55,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 19:25:55,785 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 19:25:55,786 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 19:25:55,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 19:25:55,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 19:25:55,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 19:25:55,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 19:25:55,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 19:25:55,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 19:25:55,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 19:25:55,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 19:25:55,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 19:25:55,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 19:25:55,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 19:25:55,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 19:25:55,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 19:25:55,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 19:25:55,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-18 19:25:55,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-18 19:25:55,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-18 19:25:55,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-18 19:25:55,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-18 19:25:55,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-18 19:25:55,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 19:25:55,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 19:25:55,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 19:25:55,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 19:25:55,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 19:25:55,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 19:25:55,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 19:25:55,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 19:25:55,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 19:25:55,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 19:25:55,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 19:25:55,814 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-SemanticLbe.epf [2019-12-18 19:25:55,837 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 19:25:55,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 19:25:55,839 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 19:25:55,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 19:25:55,839 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 19:25:55,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 19:25:55,840 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 19:25:55,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 19:25:55,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 19:25:55,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 19:25:55,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 19:25:55,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 19:25:55,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 19:25:55,842 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 19:25:55,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 19:25:55,842 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 19:25:55,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 19:25:55,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 19:25:55,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 19:25:55,843 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 19:25:55,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 19:25:55,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 19:25:55,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 19:25:55,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 19:25:55,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 19:25:55,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 19:25:55,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 19:25:55,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 19:25:55,846 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 19:25:56,101 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 19:25:56,117 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 19:25:56,121 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 19:25:56,122 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 19:25:56,122 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 19:25:56,123 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-array-1.i [2019-12-18 19:25:56,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e5abfca9/45e556bdb48a4099a10ca24cd306335b/FLAGcaab52e2b [2019-12-18 19:25:56,754 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 19:25:56,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-array-1.i [2019-12-18 19:25:56,776 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e5abfca9/45e556bdb48a4099a10ca24cd306335b/FLAGcaab52e2b [2019-12-18 19:25:57,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e5abfca9/45e556bdb48a4099a10ca24cd306335b [2019-12-18 19:25:57,062 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 19:25:57,064 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 19:25:57,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 19:25:57,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 19:25:57,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 19:25:57,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:25:57" (1/1) ... [2019-12-18 19:25:57,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51df9b38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:25:57, skipping insertion in model container [2019-12-18 19:25:57,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:25:57" (1/1) ... [2019-12-18 19:25:57,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 19:25:57,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 19:25:57,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 19:25:57,675 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 19:25:57,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 19:25:57,848 INFO L208 MainTranslator]: Completed translation [2019-12-18 19:25:57,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:25:57 WrapperNode [2019-12-18 19:25:57,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 19:25:57,851 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 19:25:57,851 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 19:25:57,851 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 19:25:57,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:25:57" (1/1) ... [2019-12-18 19:25:57,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:25:57" (1/1) ... [2019-12-18 19:25:57,908 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 19:25:57,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 19:25:57,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 19:25:57,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 19:25:57,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:25:57" (1/1) ... [2019-12-18 19:25:57,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:25:57" (1/1) ... [2019-12-18 19:25:57,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:25:57" (1/1) ... [2019-12-18 19:25:57,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:25:57" (1/1) ... [2019-12-18 19:25:57,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:25:57" (1/1) ... [2019-12-18 19:25:57,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:25:57" (1/1) ... [2019-12-18 19:25:57,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:25:57" (1/1) ... [2019-12-18 19:25:57,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 19:25:57,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 19:25:57,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 19:25:57,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 19:25:57,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:25:57" (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 [2019-12-18 19:25:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-12-18 19:25:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-18 19:25:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 19:25:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2019-12-18 19:25:58,016 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2019-12-18 19:25:58,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 19:25:58,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 19:25:58,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 19:25:58,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 19:25:58,018 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-18 19:25:58,402 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 19:25:58,403 INFO L287 CfgBuilder]: Removed 9 assume(true) statements. [2019-12-18 19:25:58,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:25:58 BoogieIcfgContainer [2019-12-18 19:25:58,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 19:25:58,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 19:25:58,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 19:25:58,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 19:25:58,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 07:25:57" (1/3) ... [2019-12-18 19:25:58,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f39a5a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:25:58, skipping insertion in model container [2019-12-18 19:25:58,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:25:57" (2/3) ... [2019-12-18 19:25:58,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f39a5a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:25:58, skipping insertion in model container [2019-12-18 19:25:58,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:25:58" (3/3) ... [2019-12-18 19:25:58,413 INFO L109 eAbstractionObserver]: Analyzing ICFG nondet-array-1.i [2019-12-18 19:25:58,420 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 19:25:58,421 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 19:25:58,427 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-18 19:25:58,428 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 19:25:58,451 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:25:58,451 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:25:58,451 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:25:58,452 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:25:58,453 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:25:58,453 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:25:58,453 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:25:58,457 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:25:58,457 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:25:58,458 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:25:58,458 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:25:58,458 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:25:58,485 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 19:25:58,503 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 19:25:58,503 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 19:25:58,504 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 19:25:58,504 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 19:25:58,504 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 19:25:58,504 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 19:25:58,504 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 19:25:58,504 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 19:25:58,517 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 66 transitions [2019-12-18 19:25:58,519 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 66 transitions [2019-12-18 19:25:58,566 INFO L126 PetriNetUnfolder]: 11/98 cut-off events. [2019-12-18 19:25:58,567 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:25:58,573 INFO L76 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 98 events. 11/98 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 197 event pairs. 10/92 useless extension candidates. Maximal degree in co-relation 50. Up to 4 conditions per place. [2019-12-18 19:25:58,579 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 66 transitions [2019-12-18 19:25:58,610 INFO L126 PetriNetUnfolder]: 11/98 cut-off events. [2019-12-18 19:25:58,610 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:25:58,611 INFO L76 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 98 events. 11/98 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 197 event pairs. 10/92 useless extension candidates. Maximal degree in co-relation 50. Up to 4 conditions per place. [2019-12-18 19:25:58,613 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 370 [2019-12-18 19:25:58,614 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 19:26:00,144 WARN L192 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-12-18 19:26:00,252 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2019-12-18 19:26:00,291 INFO L206 etLargeBlockEncoding]: Checked pairs total: 289 [2019-12-18 19:26:00,291 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2019-12-18 19:26:00,296 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 14 places, 14 transitions [2019-12-18 19:26:00,308 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 27 states. [2019-12-18 19:26:00,311 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-12-18 19:26:00,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-18 19:26:00,319 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:26:00,320 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-18 19:26:00,321 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:26:00,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:26:00,330 INFO L82 PathProgramCache]: Analyzing trace with hash 7975439, now seen corresponding path program 1 times [2019-12-18 19:26:00,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:26:00,342 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203045855] [2019-12-18 19:26:00,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:26:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:26:00,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:26:00,590 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203045855] [2019-12-18 19:26:00,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:26:00,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 19:26:00,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221082872] [2019-12-18 19:26:00,602 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 19:26:00,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:26:00,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 19:26:00,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:26:00,618 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2019-12-18 19:26:00,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:26:00,656 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2019-12-18 19:26:00,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 19:26:00,658 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-18 19:26:00,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:26:00,668 INFO L225 Difference]: With dead ends: 27 [2019-12-18 19:26:00,669 INFO L226 Difference]: Without dead ends: 23 [2019-12-18 19:26:00,670 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:26:00,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-18 19:26:00,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-18 19:26:00,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-18 19:26:00,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 32 transitions. [2019-12-18 19:26:00,706 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 32 transitions. Word has length 4 [2019-12-18 19:26:00,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:26:00,706 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 32 transitions. [2019-12-18 19:26:00,707 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 19:26:00,707 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2019-12-18 19:26:00,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-18 19:26:00,707 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:26:00,708 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-12-18 19:26:00,708 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:26:00,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:26:00,708 INFO L82 PathProgramCache]: Analyzing trace with hash -940684826, now seen corresponding path program 1 times [2019-12-18 19:26:00,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:26:00,709 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479590517] [2019-12-18 19:26:00,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:26:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:26:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:26:00,832 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 19:26:00,832 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 19:26:00,834 WARN L364 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 19:26:00,834 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2019-12-18 19:26:00,843 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:00,843 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:00,843 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:00,843 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:00,844 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:00,844 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:00,844 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:00,844 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:00,844 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:00,845 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:00,845 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:00,845 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:00,845 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:00,845 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:00,846 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:00,846 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:00,846 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:00,847 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:00,847 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:00,848 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:00,849 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:00,849 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:00,849 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:00,849 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:00,853 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 19:26:00,853 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 19:26:00,853 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 19:26:00,853 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 19:26:00,854 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 19:26:00,854 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 19:26:00,854 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 19:26:00,854 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 19:26:00,854 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 19:26:00,856 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 73 transitions [2019-12-18 19:26:00,856 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 71 places, 73 transitions [2019-12-18 19:26:00,888 INFO L126 PetriNetUnfolder]: 22/178 cut-off events. [2019-12-18 19:26:00,888 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:26:00,891 INFO L76 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 178 events. 22/178 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 451 event pairs. 28/176 useless extension candidates. Maximal degree in co-relation 100. Up to 8 conditions per place. [2019-12-18 19:26:00,895 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 71 places, 73 transitions [2019-12-18 19:26:00,925 INFO L126 PetriNetUnfolder]: 22/178 cut-off events. [2019-12-18 19:26:00,926 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:26:00,928 INFO L76 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 178 events. 22/178 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 451 event pairs. 28/176 useless extension candidates. Maximal degree in co-relation 100. Up to 8 conditions per place. [2019-12-18 19:26:00,931 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 900 [2019-12-18 19:26:00,931 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 19:26:02,175 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-12-18 19:26:02,256 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1597 [2019-12-18 19:26:02,256 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2019-12-18 19:26:02,256 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 23 transitions [2019-12-18 19:26:02,268 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 242 states. [2019-12-18 19:26:02,268 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2019-12-18 19:26:02,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-18 19:26:02,269 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:26:02,269 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-18 19:26:02,269 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:26:02,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:26:02,269 INFO L82 PathProgramCache]: Analyzing trace with hash 12287151, now seen corresponding path program 1 times [2019-12-18 19:26:02,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:26:02,270 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715522967] [2019-12-18 19:26:02,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:26:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:26:02,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:26:02,323 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715522967] [2019-12-18 19:26:02,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:26:02,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 19:26:02,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081216316] [2019-12-18 19:26:02,324 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 19:26:02,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:26:02,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 19:26:02,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:26:02,325 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 3 states. [2019-12-18 19:26:02,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:26:02,382 INFO L93 Difference]: Finished difference Result 242 states and 550 transitions. [2019-12-18 19:26:02,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 19:26:02,383 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-18 19:26:02,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:26:02,389 INFO L225 Difference]: With dead ends: 242 [2019-12-18 19:26:02,389 INFO L226 Difference]: Without dead ends: 216 [2019-12-18 19:26:02,389 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:26:02,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2019-12-18 19:26:02,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2019-12-18 19:26:02,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2019-12-18 19:26:02,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 494 transitions. [2019-12-18 19:26:02,420 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 494 transitions. Word has length 4 [2019-12-18 19:26:02,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:26:02,420 INFO L462 AbstractCegarLoop]: Abstraction has 216 states and 494 transitions. [2019-12-18 19:26:02,421 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 19:26:02,421 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 494 transitions. [2019-12-18 19:26:02,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 19:26:02,421 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:26:02,422 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:26:02,422 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:26:02,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:26:02,422 INFO L82 PathProgramCache]: Analyzing trace with hash 2023180747, now seen corresponding path program 1 times [2019-12-18 19:26:02,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:26:02,423 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709593427] [2019-12-18 19:26:02,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:26:02,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:26:02,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 19:26:02,478 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709593427] [2019-12-18 19:26:02,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:26:02,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:26:02,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31774799] [2019-12-18 19:26:02,480 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 19:26:02,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:26:02,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 19:26:02,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:26:02,481 INFO L87 Difference]: Start difference. First operand 216 states and 494 transitions. Second operand 4 states. [2019-12-18 19:26:02,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:26:02,550 INFO L93 Difference]: Finished difference Result 203 states and 426 transitions. [2019-12-18 19:26:02,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 19:26:02,552 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-18 19:26:02,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:26:02,554 INFO L225 Difference]: With dead ends: 203 [2019-12-18 19:26:02,555 INFO L226 Difference]: Without dead ends: 203 [2019-12-18 19:26:02,555 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:26:02,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2019-12-18 19:26:02,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 197. [2019-12-18 19:26:02,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2019-12-18 19:26:02,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 420 transitions. [2019-12-18 19:26:02,586 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 420 transitions. Word has length 8 [2019-12-18 19:26:02,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:26:02,586 INFO L462 AbstractCegarLoop]: Abstraction has 197 states and 420 transitions. [2019-12-18 19:26:02,586 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 19:26:02,586 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 420 transitions. [2019-12-18 19:26:02,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 19:26:02,590 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:26:02,590 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2019-12-18 19:26:02,590 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:26:02,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:26:02,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1086197660, now seen corresponding path program 1 times [2019-12-18 19:26:02,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:26:02,591 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446723429] [2019-12-18 19:26:02,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:26:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:26:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:26:02,636 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 19:26:02,637 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 19:26:02,637 WARN L364 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 19:26:02,637 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2019-12-18 19:26:02,649 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,649 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,649 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,650 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,650 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,650 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,650 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,651 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,651 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,651 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,651 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,651 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,652 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,652 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,652 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,652 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,652 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,652 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,653 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,653 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,653 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,653 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,654 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,654 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,654 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,654 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,656 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,656 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,656 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,656 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,657 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,658 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,658 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,658 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,658 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,659 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:02,662 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 19:26:02,662 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 19:26:02,662 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 19:26:02,663 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 19:26:02,663 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 19:26:02,663 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 19:26:02,663 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 19:26:02,663 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 19:26:02,663 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 19:26:02,665 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 80 transitions [2019-12-18 19:26:02,665 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 79 places, 80 transitions [2019-12-18 19:26:02,713 INFO L126 PetriNetUnfolder]: 44/325 cut-off events. [2019-12-18 19:26:02,713 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:26:02,718 INFO L76 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 325 events. 44/325 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1074 event pairs. 58/327 useless extension candidates. Maximal degree in co-relation 186. Up to 16 conditions per place. [2019-12-18 19:26:02,727 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 79 places, 80 transitions [2019-12-18 19:26:02,765 INFO L126 PetriNetUnfolder]: 44/325 cut-off events. [2019-12-18 19:26:02,765 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:26:02,769 INFO L76 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 325 events. 44/325 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1074 event pairs. 58/327 useless extension candidates. Maximal degree in co-relation 186. Up to 16 conditions per place. [2019-12-18 19:26:02,775 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1470 [2019-12-18 19:26:02,775 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 19:26:04,084 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-12-18 19:26:04,164 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2828 [2019-12-18 19:26:04,164 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2019-12-18 19:26:04,164 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 28 transitions [2019-12-18 19:26:04,210 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1150 states. [2019-12-18 19:26:04,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states. [2019-12-18 19:26:04,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-18 19:26:04,211 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:26:04,211 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-18 19:26:04,211 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:26:04,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:26:04,212 INFO L82 PathProgramCache]: Analyzing trace with hash 16813297, now seen corresponding path program 1 times [2019-12-18 19:26:04,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:26:04,212 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424381285] [2019-12-18 19:26:04,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:26:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:26:04,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:26:04,260 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424381285] [2019-12-18 19:26:04,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:26:04,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 19:26:04,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96743417] [2019-12-18 19:26:04,260 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 19:26:04,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:26:04,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 19:26:04,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:26:04,262 INFO L87 Difference]: Start difference. First operand 1150 states. Second operand 3 states. [2019-12-18 19:26:04,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:26:04,299 INFO L93 Difference]: Finished difference Result 1150 states and 3360 transitions. [2019-12-18 19:26:04,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 19:26:04,299 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-18 19:26:04,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:26:04,310 INFO L225 Difference]: With dead ends: 1150 [2019-12-18 19:26:04,310 INFO L226 Difference]: Without dead ends: 1024 [2019-12-18 19:26:04,311 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:26:04,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2019-12-18 19:26:04,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1024. [2019-12-18 19:26:04,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2019-12-18 19:26:04,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 3009 transitions. [2019-12-18 19:26:04,365 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 3009 transitions. Word has length 4 [2019-12-18 19:26:04,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:26:04,365 INFO L462 AbstractCegarLoop]: Abstraction has 1024 states and 3009 transitions. [2019-12-18 19:26:04,366 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 19:26:04,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 3009 transitions. [2019-12-18 19:26:04,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 19:26:04,366 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:26:04,366 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:26:04,367 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:26:04,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:26:04,367 INFO L82 PathProgramCache]: Analyzing trace with hash -427060089, now seen corresponding path program 1 times [2019-12-18 19:26:04,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:26:04,368 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817898904] [2019-12-18 19:26:04,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:26:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:26:04,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 19:26:04,412 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817898904] [2019-12-18 19:26:04,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:26:04,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:26:04,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339851575] [2019-12-18 19:26:04,413 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 19:26:04,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:26:04,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 19:26:04,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:26:04,419 INFO L87 Difference]: Start difference. First operand 1024 states and 3009 transitions. Second operand 4 states. [2019-12-18 19:26:04,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:26:04,463 INFO L93 Difference]: Finished difference Result 1015 states and 2784 transitions. [2019-12-18 19:26:04,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 19:26:04,464 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-18 19:26:04,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:26:04,472 INFO L225 Difference]: With dead ends: 1015 [2019-12-18 19:26:04,472 INFO L226 Difference]: Without dead ends: 1015 [2019-12-18 19:26:04,472 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:26:04,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2019-12-18 19:26:04,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 977. [2019-12-18 19:26:04,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 977 states. [2019-12-18 19:26:04,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 2718 transitions. [2019-12-18 19:26:04,505 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 2718 transitions. Word has length 8 [2019-12-18 19:26:04,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:26:04,505 INFO L462 AbstractCegarLoop]: Abstraction has 977 states and 2718 transitions. [2019-12-18 19:26:04,505 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 19:26:04,506 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 2718 transitions. [2019-12-18 19:26:04,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-18 19:26:04,508 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:26:04,508 INFO L411 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2019-12-18 19:26:04,508 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:26:04,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:26:04,509 INFO L82 PathProgramCache]: Analyzing trace with hash 880459202, now seen corresponding path program 1 times [2019-12-18 19:26:04,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:26:04,509 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16393325] [2019-12-18 19:26:04,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:26:04,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:26:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:26:04,577 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 19:26:04,577 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 19:26:04,577 WARN L364 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 19:26:04,578 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2019-12-18 19:26:04,590 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,590 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,590 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,590 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,590 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,591 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,592 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,593 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,593 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,593 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,593 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,593 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,593 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,594 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,594 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,594 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,594 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,594 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,594 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,594 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,595 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,595 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,595 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,595 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,595 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,595 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,596 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,596 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,596 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,597 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,597 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,597 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,597 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,599 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,599 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,599 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,600 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,600 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,602 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,602 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,602 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,603 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,603 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,605 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,605 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,605 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,605 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,606 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:04,612 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 19:26:04,612 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 19:26:04,612 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 19:26:04,612 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 19:26:04,613 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 19:26:04,613 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 19:26:04,613 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 19:26:04,613 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 19:26:04,613 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 19:26:04,626 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 87 transitions [2019-12-18 19:26:04,626 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 87 places, 87 transitions [2019-12-18 19:26:04,687 INFO L126 PetriNetUnfolder]: 90/608 cut-off events. [2019-12-18 19:26:04,687 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:26:04,692 INFO L76 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 608 events. 90/608 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2681 event pairs. 109/611 useless extension candidates. Maximal degree in co-relation 345. Up to 32 conditions per place. [2019-12-18 19:26:04,708 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 87 places, 87 transitions [2019-12-18 19:26:04,770 INFO L126 PetriNetUnfolder]: 90/608 cut-off events. [2019-12-18 19:26:04,770 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:26:04,775 INFO L76 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 608 events. 90/608 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2681 event pairs. 109/611 useless extension candidates. Maximal degree in co-relation 345. Up to 32 conditions per place. [2019-12-18 19:26:04,788 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2120 [2019-12-18 19:26:04,788 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 19:26:05,967 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-12-18 19:26:06,117 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3986 [2019-12-18 19:26:06,118 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2019-12-18 19:26:06,118 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 33 transitions [2019-12-18 19:26:06,442 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5482 states. [2019-12-18 19:26:06,442 INFO L276 IsEmpty]: Start isEmpty. Operand 5482 states. [2019-12-18 19:26:06,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-18 19:26:06,443 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:26:06,443 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-18 19:26:06,443 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:26:06,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:26:06,443 INFO L82 PathProgramCache]: Analyzing trace with hash 21615603, now seen corresponding path program 1 times [2019-12-18 19:26:06,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:26:06,444 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763753974] [2019-12-18 19:26:06,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:26:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:26:06,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:26:06,465 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763753974] [2019-12-18 19:26:06,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:26:06,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 19:26:06,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714489133] [2019-12-18 19:26:06,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 19:26:06,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:26:06,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 19:26:06,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:26:06,467 INFO L87 Difference]: Start difference. First operand 5482 states. Second operand 3 states. [2019-12-18 19:26:06,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:26:06,547 INFO L93 Difference]: Finished difference Result 5482 states and 19554 transitions. [2019-12-18 19:26:06,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 19:26:06,547 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-18 19:26:06,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:26:06,590 INFO L225 Difference]: With dead ends: 5482 [2019-12-18 19:26:06,590 INFO L226 Difference]: Without dead ends: 4856 [2019-12-18 19:26:06,591 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:26:06,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2019-12-18 19:26:06,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2019-12-18 19:26:06,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2019-12-18 19:26:06,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 17428 transitions. [2019-12-18 19:26:06,851 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 17428 transitions. Word has length 4 [2019-12-18 19:26:06,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:26:06,852 INFO L462 AbstractCegarLoop]: Abstraction has 4856 states and 17428 transitions. [2019-12-18 19:26:06,852 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 19:26:06,852 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 17428 transitions. [2019-12-18 19:26:06,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 19:26:06,853 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:26:06,853 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:26:06,853 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:26:06,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:26:06,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1297801215, now seen corresponding path program 1 times [2019-12-18 19:26:06,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:26:06,854 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834691105] [2019-12-18 19:26:06,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:26:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:26:06,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:26:06,885 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834691105] [2019-12-18 19:26:06,885 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968643331] [2019-12-18 19:26:06,886 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 [2019-12-18 19:26:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:26:06,960 INFO L264 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-18 19:26:06,962 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:26:06,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:26:06,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:26:06,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2019-12-18 19:26:06,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287821521] [2019-12-18 19:26:06,998 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-18 19:26:06,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:26:06,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-18 19:26:06,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-18 19:26:06,999 INFO L87 Difference]: Start difference. First operand 4856 states and 17428 transitions. Second operand 6 states. [2019-12-18 19:26:07,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:26:07,067 INFO L93 Difference]: Finished difference Result 4856 states and 17424 transitions. [2019-12-18 19:26:07,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 19:26:07,068 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-12-18 19:26:07,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:26:07,109 INFO L225 Difference]: With dead ends: 4856 [2019-12-18 19:26:07,109 INFO L226 Difference]: Without dead ends: 4856 [2019-12-18 19:26:07,110 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-18 19:26:07,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2019-12-18 19:26:07,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2019-12-18 19:26:07,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2019-12-18 19:26:07,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 17424 transitions. [2019-12-18 19:26:07,282 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 17424 transitions. Word has length 8 [2019-12-18 19:26:07,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:26:07,282 INFO L462 AbstractCegarLoop]: Abstraction has 4856 states and 17424 transitions. [2019-12-18 19:26:07,282 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-18 19:26:07,283 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 17424 transitions. [2019-12-18 19:26:07,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-18 19:26:07,284 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:26:07,284 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-12-18 19:26:07,487 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:26:07,488 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:26:07,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:26:07,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1878298030, now seen corresponding path program 1 times [2019-12-18 19:26:07,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:26:07,488 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602975777] [2019-12-18 19:26:07,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:26:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:26:07,548 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:26:07,549 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602975777] [2019-12-18 19:26:07,549 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656732349] [2019-12-18 19:26:07,549 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 [2019-12-18 19:26:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:26:07,607 INFO L264 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-18 19:26:07,608 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:26:07,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:26:07,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:26:07,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2019-12-18 19:26:07,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789633631] [2019-12-18 19:26:07,646 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-18 19:26:07,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:26:07,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-18 19:26:07,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-12-18 19:26:07,647 INFO L87 Difference]: Start difference. First operand 4856 states and 17424 transitions. Second operand 8 states. [2019-12-18 19:26:07,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:26:07,780 INFO L93 Difference]: Finished difference Result 4856 states and 17408 transitions. [2019-12-18 19:26:07,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 19:26:07,780 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2019-12-18 19:26:07,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:26:07,823 INFO L225 Difference]: With dead ends: 4856 [2019-12-18 19:26:07,824 INFO L226 Difference]: Without dead ends: 4856 [2019-12-18 19:26:07,824 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-12-18 19:26:07,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2019-12-18 19:26:07,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2019-12-18 19:26:07,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2019-12-18 19:26:07,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 17408 transitions. [2019-12-18 19:26:07,976 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 17408 transitions. Word has length 12 [2019-12-18 19:26:07,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:26:07,976 INFO L462 AbstractCegarLoop]: Abstraction has 4856 states and 17408 transitions. [2019-12-18 19:26:07,976 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-18 19:26:07,976 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 17408 transitions. [2019-12-18 19:26:07,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-18 19:26:07,978 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:26:07,978 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:26:08,183 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:26:08,183 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:26:08,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:26:08,183 INFO L82 PathProgramCache]: Analyzing trace with hash -117426822, now seen corresponding path program 1 times [2019-12-18 19:26:08,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:26:08,184 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945485179] [2019-12-18 19:26:08,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:26:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:26:08,271 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:26:08,272 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945485179] [2019-12-18 19:26:08,272 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844309928] [2019-12-18 19:26:08,272 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 [2019-12-18 19:26:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:26:08,348 INFO L264 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-18 19:26:08,353 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:26:08,399 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:26:08,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:26:08,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2019-12-18 19:26:08,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456038381] [2019-12-18 19:26:08,400 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-18 19:26:08,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:26:08,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-18 19:26:08,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2019-12-18 19:26:08,404 INFO L87 Difference]: Start difference. First operand 4856 states and 17408 transitions. Second operand 10 states. [2019-12-18 19:26:08,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:26:08,483 INFO L93 Difference]: Finished difference Result 4856 states and 17344 transitions. [2019-12-18 19:26:08,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-18 19:26:08,483 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2019-12-18 19:26:08,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:26:08,501 INFO L225 Difference]: With dead ends: 4856 [2019-12-18 19:26:08,501 INFO L226 Difference]: Without dead ends: 4856 [2019-12-18 19:26:08,502 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2019-12-18 19:26:08,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2019-12-18 19:26:08,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2019-12-18 19:26:08,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2019-12-18 19:26:08,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 17344 transitions. [2019-12-18 19:26:08,661 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 17344 transitions. Word has length 16 [2019-12-18 19:26:08,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:26:08,663 INFO L462 AbstractCegarLoop]: Abstraction has 4856 states and 17344 transitions. [2019-12-18 19:26:08,663 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-18 19:26:08,664 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 17344 transitions. [2019-12-18 19:26:08,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-18 19:26:08,666 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:26:08,666 INFO L411 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2019-12-18 19:26:08,965 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:26:08,965 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:26:08,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:26:08,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1144536387, now seen corresponding path program 1 times [2019-12-18 19:26:08,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:26:08,966 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367070096] [2019-12-18 19:26:08,967 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:26:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:26:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:26:09,001 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 19:26:09,003 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 19:26:09,004 WARN L364 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 19:26:09,004 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2019-12-18 19:26:09,016 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,016 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,016 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,016 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,016 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,017 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,017 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,018 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,018 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,018 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,018 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,018 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,018 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,019 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,019 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,019 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,019 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,019 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,019 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,020 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,020 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,021 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,021 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,022 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,022 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,022 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,022 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,022 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,023 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,023 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,023 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,023 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,023 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,023 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,023 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,024 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,024 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,024 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,024 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,025 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,026 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,026 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,026 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,027 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,027 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,028 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,028 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,028 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,028 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,028 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,030 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,030 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,030 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,030 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,030 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,031 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,032 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,032 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,032 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,032 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:09,037 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 19:26:09,038 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 19:26:09,038 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 19:26:09,038 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 19:26:09,038 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 19:26:09,038 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 19:26:09,038 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 19:26:09,038 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 19:26:09,038 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 19:26:09,040 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 94 transitions [2019-12-18 19:26:09,040 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 95 places, 94 transitions [2019-12-18 19:26:09,178 INFO L126 PetriNetUnfolder]: 188/1167 cut-off events. [2019-12-18 19:26:09,178 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:26:09,191 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1278 conditions, 1167 events. 188/1167 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6730 event pairs. 201/1164 useless extension candidates. Maximal degree in co-relation 653. Up to 80 conditions per place. [2019-12-18 19:26:09,230 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 95 places, 94 transitions [2019-12-18 19:26:09,378 INFO L126 PetriNetUnfolder]: 188/1167 cut-off events. [2019-12-18 19:26:09,378 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:26:09,388 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1278 conditions, 1167 events. 188/1167 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6730 event pairs. 201/1164 useless extension candidates. Maximal degree in co-relation 653. Up to 80 conditions per place. [2019-12-18 19:26:09,409 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2850 [2019-12-18 19:26:09,409 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 19:26:10,884 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-12-18 19:26:10,992 INFO L206 etLargeBlockEncoding]: Checked pairs total: 6149 [2019-12-18 19:26:10,992 INFO L214 etLargeBlockEncoding]: Total number of compositions: 60 [2019-12-18 19:26:10,992 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 38 transitions [2019-12-18 19:26:13,362 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26310 states. [2019-12-18 19:26:13,362 INFO L276 IsEmpty]: Start isEmpty. Operand 26310 states. [2019-12-18 19:26:13,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-18 19:26:13,362 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:26:13,362 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-18 19:26:13,363 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:26:13,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:26:13,363 INFO L82 PathProgramCache]: Analyzing trace with hash 26696947, now seen corresponding path program 1 times [2019-12-18 19:26:13,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:26:13,363 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766336992] [2019-12-18 19:26:13,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:26:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:26:13,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:26:13,407 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766336992] [2019-12-18 19:26:13,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:26:13,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 19:26:13,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668993460] [2019-12-18 19:26:13,408 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 19:26:13,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:26:13,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 19:26:13,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:26:13,409 INFO L87 Difference]: Start difference. First operand 26310 states. Second operand 3 states. [2019-12-18 19:26:13,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:26:13,572 INFO L93 Difference]: Finished difference Result 26310 states and 110676 transitions. [2019-12-18 19:26:13,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 19:26:13,573 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-18 19:26:13,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:26:13,701 INFO L225 Difference]: With dead ends: 26310 [2019-12-18 19:26:13,701 INFO L226 Difference]: Without dead ends: 23184 [2019-12-18 19:26:13,701 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:26:14,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23184 states. [2019-12-18 19:26:14,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23184 to 23184. [2019-12-18 19:26:14,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23184 states. [2019-12-18 19:26:14,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23184 states to 23184 states and 98175 transitions. [2019-12-18 19:26:14,679 INFO L78 Accepts]: Start accepts. Automaton has 23184 states and 98175 transitions. Word has length 4 [2019-12-18 19:26:14,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:26:14,679 INFO L462 AbstractCegarLoop]: Abstraction has 23184 states and 98175 transitions. [2019-12-18 19:26:14,679 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 19:26:14,679 INFO L276 IsEmpty]: Start isEmpty. Operand 23184 states and 98175 transitions. [2019-12-18 19:26:14,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 19:26:14,680 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:26:14,680 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:26:14,680 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:26:14,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:26:14,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1482219427, now seen corresponding path program 1 times [2019-12-18 19:26:14,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:26:14,680 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717779312] [2019-12-18 19:26:14,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:26:14,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:26:14,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 19:26:14,708 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717779312] [2019-12-18 19:26:14,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:26:14,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:26:14,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616852005] [2019-12-18 19:26:14,709 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 19:26:14,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:26:14,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 19:26:14,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:26:14,709 INFO L87 Difference]: Start difference. First operand 23184 states and 98175 transitions. Second operand 4 states. [2019-12-18 19:26:14,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:26:14,853 INFO L93 Difference]: Finished difference Result 24543 states and 99524 transitions. [2019-12-18 19:26:14,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 19:26:14,853 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-18 19:26:14,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:26:14,934 INFO L225 Difference]: With dead ends: 24543 [2019-12-18 19:26:14,934 INFO L226 Difference]: Without dead ends: 24543 [2019-12-18 19:26:14,935 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:26:16,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24543 states. [2019-12-18 19:26:17,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24543 to 23577. [2019-12-18 19:26:17,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23577 states. [2019-12-18 19:26:17,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23577 states to 23577 states and 96338 transitions. [2019-12-18 19:26:17,144 INFO L78 Accepts]: Start accepts. Automaton has 23577 states and 96338 transitions. Word has length 8 [2019-12-18 19:26:17,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:26:17,144 INFO L462 AbstractCegarLoop]: Abstraction has 23577 states and 96338 transitions. [2019-12-18 19:26:17,144 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 19:26:17,145 INFO L276 IsEmpty]: Start isEmpty. Operand 23577 states and 96338 transitions. [2019-12-18 19:26:17,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-18 19:26:17,145 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:26:17,146 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:26:17,146 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:26:17,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:26:17,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1647353871, now seen corresponding path program 1 times [2019-12-18 19:26:17,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:26:17,147 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789171312] [2019-12-18 19:26:17,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:26:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:26:17,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 19:26:17,182 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789171312] [2019-12-18 19:26:17,182 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781954682] [2019-12-18 19:26:17,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:26:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:26:17,246 INFO L264 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-18 19:26:17,247 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:26:17,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 19:26:17,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:26:17,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2019-12-18 19:26:17,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434289263] [2019-12-18 19:26:17,278 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-18 19:26:17,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:26:17,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-18 19:26:17,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-18 19:26:17,279 INFO L87 Difference]: Start difference. First operand 23577 states and 96338 transitions. Second operand 6 states. [2019-12-18 19:26:17,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:26:17,711 INFO L93 Difference]: Finished difference Result 23573 states and 96327 transitions. [2019-12-18 19:26:17,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 19:26:17,711 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-12-18 19:26:17,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:26:17,766 INFO L225 Difference]: With dead ends: 23573 [2019-12-18 19:26:17,766 INFO L226 Difference]: Without dead ends: 23573 [2019-12-18 19:26:17,766 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-18 19:26:17,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23573 states. [2019-12-18 19:26:18,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23573 to 23573. [2019-12-18 19:26:18,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23573 states. [2019-12-18 19:26:18,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23573 states to 23573 states and 96327 transitions. [2019-12-18 19:26:18,353 INFO L78 Accepts]: Start accepts. Automaton has 23573 states and 96327 transitions. Word has length 16 [2019-12-18 19:26:18,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:26:18,354 INFO L462 AbstractCegarLoop]: Abstraction has 23573 states and 96327 transitions. [2019-12-18 19:26:18,354 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-18 19:26:18,354 INFO L276 IsEmpty]: Start isEmpty. Operand 23573 states and 96327 transitions. [2019-12-18 19:26:18,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-18 19:26:18,356 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:26:18,356 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:26:18,872 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:26:18,873 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:26:18,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:26:18,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1700547162, now seen corresponding path program 1 times [2019-12-18 19:26:18,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:26:18,874 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596253211] [2019-12-18 19:26:18,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:26:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:26:18,914 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 19:26:18,915 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596253211] [2019-12-18 19:26:18,915 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079966800] [2019-12-18 19:26:18,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:26:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:26:18,990 INFO L264 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-18 19:26:18,992 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:26:19,021 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 19:26:19,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:26:19,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2019-12-18 19:26:19,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727522716] [2019-12-18 19:26:19,024 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-18 19:26:19,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:26:19,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-18 19:26:19,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-12-18 19:26:19,025 INFO L87 Difference]: Start difference. First operand 23573 states and 96327 transitions. Second operand 8 states. [2019-12-18 19:26:19,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:26:19,172 INFO L93 Difference]: Finished difference Result 23557 states and 96271 transitions. [2019-12-18 19:26:19,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 19:26:19,173 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2019-12-18 19:26:19,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:26:19,225 INFO L225 Difference]: With dead ends: 23557 [2019-12-18 19:26:19,225 INFO L226 Difference]: Without dead ends: 23557 [2019-12-18 19:26:19,226 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-12-18 19:26:19,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23557 states. [2019-12-18 19:26:19,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23557 to 23557. [2019-12-18 19:26:19,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23557 states. [2019-12-18 19:26:21,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23557 states to 23557 states and 96271 transitions. [2019-12-18 19:26:21,398 INFO L78 Accepts]: Start accepts. Automaton has 23557 states and 96271 transitions. Word has length 20 [2019-12-18 19:26:21,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:26:21,399 INFO L462 AbstractCegarLoop]: Abstraction has 23557 states and 96271 transitions. [2019-12-18 19:26:21,399 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-18 19:26:21,399 INFO L276 IsEmpty]: Start isEmpty. Operand 23557 states and 96271 transitions. [2019-12-18 19:26:21,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-18 19:26:21,407 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:26:21,407 INFO L411 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:26:21,610 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:26:21,610 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:26:21,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:26:21,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1187474448, now seen corresponding path program 1 times [2019-12-18 19:26:21,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:26:21,612 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774378561] [2019-12-18 19:26:21,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:26:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:26:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:26:21,641 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 19:26:21,645 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 19:26:21,645 WARN L364 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 19:26:21,645 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2019-12-18 19:26:21,653 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,654 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,654 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,654 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,654 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,654 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,654 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,655 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,655 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,655 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,655 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,655 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,655 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,655 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,656 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,656 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,656 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,656 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,656 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,656 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,656 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,656 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,657 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,657 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,657 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,657 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,657 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,657 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,657 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,658 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,658 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,658 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,658 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,658 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,658 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,658 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,659 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,659 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,659 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,659 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,659 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,659 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,659 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,660 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,660 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,660 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,660 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,661 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,661 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,662 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,662 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,662 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,663 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,663 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,663 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,663 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,663 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,665 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,665 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,665 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,665 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,665 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,667 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,667 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,667 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,667 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,667 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,669 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,669 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,669 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,669 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,669 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:26:21,674 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 19:26:21,674 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 19:26:21,675 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 19:26:21,675 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 19:26:21,675 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 19:26:21,675 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 19:26:21,675 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 19:26:21,675 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 19:26:21,675 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 19:26:21,676 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 101 transitions [2019-12-18 19:26:21,676 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 103 places, 101 transitions [2019-12-18 19:26:22,035 INFO L126 PetriNetUnfolder]: 398/2286 cut-off events. [2019-12-18 19:26:22,035 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:26:22,059 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2518 conditions, 2286 events. 398/2286 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 16149 event pairs. 378/2266 useless extension candidates. Maximal degree in co-relation 1266. Up to 192 conditions per place. [2019-12-18 19:26:22,115 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 103 places, 101 transitions [2019-12-18 19:26:22,429 INFO L126 PetriNetUnfolder]: 398/2286 cut-off events. [2019-12-18 19:26:22,429 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:26:22,454 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2518 conditions, 2286 events. 398/2286 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 16149 event pairs. 378/2266 useless extension candidates. Maximal degree in co-relation 1266. Up to 192 conditions per place. [2019-12-18 19:26:22,505 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3660 [2019-12-18 19:26:22,505 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 19:26:24,088 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-12-18 19:26:24,176 INFO L206 etLargeBlockEncoding]: Checked pairs total: 7553 [2019-12-18 19:26:24,176 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2019-12-18 19:26:24,177 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 43 transitions [2019-12-18 19:26:50,874 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 127122 states. [2019-12-18 19:26:50,875 INFO L276 IsEmpty]: Start isEmpty. Operand 127122 states. [2019-12-18 19:26:50,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-18 19:26:50,875 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:26:50,875 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-18 19:26:50,875 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:26:50,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:26:50,876 INFO L82 PathProgramCache]: Analyzing trace with hash 32083310, now seen corresponding path program 1 times [2019-12-18 19:26:50,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:26:50,876 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287729198] [2019-12-18 19:26:50,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:26:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:26:50,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:26:50,901 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287729198] [2019-12-18 19:26:50,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:26:50,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 19:26:50,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835405409] [2019-12-18 19:26:50,902 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 19:26:50,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:26:50,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 19:26:50,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:26:50,902 INFO L87 Difference]: Start difference. First operand 127122 states. Second operand 3 states. [2019-12-18 19:26:51,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:26:51,823 INFO L93 Difference]: Finished difference Result 127122 states and 615398 transitions. [2019-12-18 19:26:51,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 19:26:51,824 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-18 19:26:51,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:26:56,310 INFO L225 Difference]: With dead ends: 127122 [2019-12-18 19:26:56,311 INFO L226 Difference]: Without dead ends: 111496 [2019-12-18 19:26:56,311 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:26:59,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111496 states. [2019-12-18 19:27:01,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111496 to 111496. [2019-12-18 19:27:01,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111496 states. [2019-12-18 19:27:02,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111496 states to 111496 states and 543522 transitions. [2019-12-18 19:27:02,469 INFO L78 Accepts]: Start accepts. Automaton has 111496 states and 543522 transitions. Word has length 4 [2019-12-18 19:27:02,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:27:02,469 INFO L462 AbstractCegarLoop]: Abstraction has 111496 states and 543522 transitions. [2019-12-18 19:27:02,469 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 19:27:02,469 INFO L276 IsEmpty]: Start isEmpty. Operand 111496 states and 543522 transitions. [2019-12-18 19:27:02,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 19:27:02,469 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:27:02,469 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:27:02,469 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:27:02,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:27:02,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1213874105, now seen corresponding path program 1 times [2019-12-18 19:27:02,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:27:02,470 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890440248] [2019-12-18 19:27:02,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:27:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:27:02,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 19:27:02,506 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890440248] [2019-12-18 19:27:02,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:27:02,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:27:02,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987026883] [2019-12-18 19:27:02,507 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 19:27:02,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:27:02,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 19:27:02,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:27:02,508 INFO L87 Difference]: Start difference. First operand 111496 states and 543522 transitions. Second operand 4 states. [2019-12-18 19:27:03,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:27:03,186 INFO L93 Difference]: Finished difference Result 120747 states and 568406 transitions. [2019-12-18 19:27:03,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 19:27:03,186 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-18 19:27:03,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:27:03,562 INFO L225 Difference]: With dead ends: 120747 [2019-12-18 19:27:03,562 INFO L226 Difference]: Without dead ends: 120747 [2019-12-18 19:27:03,562 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:27:12,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120747 states. [2019-12-18 19:27:19,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120747 to 116197. [2019-12-18 19:27:19,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116197 states. [2019-12-18 19:27:19,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116197 states to 116197 states and 549860 transitions. [2019-12-18 19:27:19,865 INFO L78 Accepts]: Start accepts. Automaton has 116197 states and 549860 transitions. Word has length 8 [2019-12-18 19:27:19,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:27:19,866 INFO L462 AbstractCegarLoop]: Abstraction has 116197 states and 549860 transitions. [2019-12-18 19:27:19,866 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 19:27:19,866 INFO L276 IsEmpty]: Start isEmpty. Operand 116197 states and 549860 transitions. [2019-12-18 19:27:19,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-18 19:27:19,867 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:27:19,867 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:27:19,867 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:27:19,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:27:19,867 INFO L82 PathProgramCache]: Analyzing trace with hash 579549320, now seen corresponding path program 1 times [2019-12-18 19:27:19,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:27:19,867 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658543224] [2019-12-18 19:27:19,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:27:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:27:19,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 19:27:19,904 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658543224] [2019-12-18 19:27:19,904 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29050982] [2019-12-18 19:27:19,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:27:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:27:19,980 INFO L264 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-18 19:27:19,981 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:27:19,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 19:27:20,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:27:20,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2019-12-18 19:27:20,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411933819] [2019-12-18 19:27:20,001 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-18 19:27:20,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:27:20,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-18 19:27:20,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-18 19:27:20,001 INFO L87 Difference]: Start difference. First operand 116197 states and 549860 transitions. Second operand 6 states. [2019-12-18 19:27:22,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:27:22,093 INFO L93 Difference]: Finished difference Result 116193 states and 549849 transitions. [2019-12-18 19:27:22,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 19:27:22,094 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-12-18 19:27:22,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:27:22,479 INFO L225 Difference]: With dead ends: 116193 [2019-12-18 19:27:22,479 INFO L226 Difference]: Without dead ends: 116193 [2019-12-18 19:27:22,480 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-18 19:27:30,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116193 states. [2019-12-18 19:27:32,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116193 to 116193. [2019-12-18 19:27:32,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116193 states. [2019-12-18 19:27:33,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116193 states to 116193 states and 549849 transitions. [2019-12-18 19:27:33,331 INFO L78 Accepts]: Start accepts. Automaton has 116193 states and 549849 transitions. Word has length 16 [2019-12-18 19:27:33,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:27:33,331 INFO L462 AbstractCegarLoop]: Abstraction has 116193 states and 549849 transitions. [2019-12-18 19:27:33,331 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-18 19:27:33,331 INFO L276 IsEmpty]: Start isEmpty. Operand 116193 states and 549849 transitions. [2019-12-18 19:27:33,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-18 19:27:33,333 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:27:33,333 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:27:33,535 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:27:33,535 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:27:33,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:27:33,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1298529040, now seen corresponding path program 1 times [2019-12-18 19:27:33,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:27:33,537 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111032472] [2019-12-18 19:27:33,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:27:33,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:27:33,581 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 19:27:33,581 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111032472] [2019-12-18 19:27:33,581 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761047035] [2019-12-18 19:27:33,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:27:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:27:33,661 INFO L264 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-18 19:27:33,662 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:27:33,703 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 19:27:33,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:27:33,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2019-12-18 19:27:33,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827717313] [2019-12-18 19:27:33,704 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-18 19:27:33,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:27:33,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-18 19:27:33,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-12-18 19:27:33,708 INFO L87 Difference]: Start difference. First operand 116193 states and 549849 transitions. Second operand 8 states. [2019-12-18 19:27:34,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:27:34,555 INFO L93 Difference]: Finished difference Result 116177 states and 549793 transitions. [2019-12-18 19:27:34,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 19:27:34,555 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2019-12-18 19:27:34,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:27:34,921 INFO L225 Difference]: With dead ends: 116177 [2019-12-18 19:27:34,921 INFO L226 Difference]: Without dead ends: 116177 [2019-12-18 19:27:34,921 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-12-18 19:27:42,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116177 states. [2019-12-18 19:27:44,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116177 to 116177. [2019-12-18 19:27:44,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116177 states. [2019-12-18 19:27:45,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116177 states to 116177 states and 549793 transitions. [2019-12-18 19:27:45,471 INFO L78 Accepts]: Start accepts. Automaton has 116177 states and 549793 transitions. Word has length 20 [2019-12-18 19:27:45,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:27:45,471 INFO L462 AbstractCegarLoop]: Abstraction has 116177 states and 549793 transitions. [2019-12-18 19:27:45,471 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-18 19:27:45,471 INFO L276 IsEmpty]: Start isEmpty. Operand 116177 states and 549793 transitions. [2019-12-18 19:27:45,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-18 19:27:45,478 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:27:45,478 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:27:45,681 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:27:45,681 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:27:45,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:27:45,682 INFO L82 PathProgramCache]: Analyzing trace with hash -982455207, now seen corresponding path program 1 times [2019-12-18 19:27:45,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:27:45,682 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497267318] [2019-12-18 19:27:45,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:27:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:27:45,725 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 19:27:45,725 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497267318] [2019-12-18 19:27:45,725 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253110621] [2019-12-18 19:27:45,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:27:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:27:45,804 INFO L264 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-18 19:27:45,805 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:27:45,844 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 19:27:45,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:27:45,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2019-12-18 19:27:45,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449793484] [2019-12-18 19:27:45,845 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-18 19:27:45,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:27:45,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-18 19:27:45,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2019-12-18 19:27:45,846 INFO L87 Difference]: Start difference. First operand 116177 states and 549793 transitions. Second operand 10 states. [2019-12-18 19:27:46,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:27:46,522 INFO L93 Difference]: Finished difference Result 116113 states and 549521 transitions. [2019-12-18 19:27:46,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-18 19:27:46,522 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2019-12-18 19:27:46,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:27:48,191 INFO L225 Difference]: With dead ends: 116113 [2019-12-18 19:27:48,191 INFO L226 Difference]: Without dead ends: 116113 [2019-12-18 19:27:48,192 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2019-12-18 19:27:50,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116113 states. [2019-12-18 19:27:58,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116113 to 116113. [2019-12-18 19:27:58,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116113 states. [2019-12-18 19:27:58,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116113 states to 116113 states and 549521 transitions. [2019-12-18 19:27:58,405 INFO L78 Accepts]: Start accepts. Automaton has 116113 states and 549521 transitions. Word has length 24 [2019-12-18 19:27:58,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:27:58,405 INFO L462 AbstractCegarLoop]: Abstraction has 116113 states and 549521 transitions. [2019-12-18 19:27:58,405 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-18 19:27:58,405 INFO L276 IsEmpty]: Start isEmpty. Operand 116113 states and 549521 transitions. [2019-12-18 19:27:58,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-18 19:27:58,420 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:27:58,420 INFO L411 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:27:58,623 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:27:58,624 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:27:58,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:27:58,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1095808649, now seen corresponding path program 1 times [2019-12-18 19:27:58,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:27:58,625 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101432449] [2019-12-18 19:27:58,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:27:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:27:58,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:27:58,660 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 19:27:58,660 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 19:27:58,661 WARN L364 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 19:27:58,661 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2019-12-18 19:27:58,670 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,671 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,671 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,671 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,671 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,671 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,671 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,672 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,672 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,672 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,672 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,672 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,672 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,673 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,673 WARN L315 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,673 WARN L315 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,673 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,673 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,673 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,673 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,673 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,674 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,674 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,674 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,674 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,674 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,674 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,674 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,675 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,675 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,675 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,675 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,675 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,675 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,675 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,676 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,676 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,676 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,676 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,676 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,676 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,676 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,677 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,677 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,677 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,677 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,677 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,677 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,677 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,678 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,678 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,678 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,678 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,678 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,688 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,688 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,688 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,689 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,689 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,690 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,690 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,690 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,691 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,691 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,692 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,692 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,692 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,692 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,693 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,694 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,694 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,694 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,694 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,695 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,696 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,696 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,696 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,696 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,696 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,697 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,698 WARN L315 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,698 WARN L315 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,698 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,698 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:58,704 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 19:27:58,704 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 19:27:58,704 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 19:27:58,705 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 19:27:58,705 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 19:27:58,705 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 19:27:58,705 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 19:27:58,705 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 19:27:58,705 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 19:27:58,706 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 108 transitions [2019-12-18 19:27:58,706 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 111 places, 108 transitions [2019-12-18 19:28:00,647 INFO L126 PetriNetUnfolder]: 848/4541 cut-off events. [2019-12-18 19:28:00,647 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:28:00,688 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5039 conditions, 4541 events. 848/4541 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 38159 event pairs. 736/4493 useless extension candidates. Maximal degree in co-relation 2504. Up to 448 conditions per place. [2019-12-18 19:28:00,789 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 111 places, 108 transitions [2019-12-18 19:28:01,659 INFO L126 PetriNetUnfolder]: 848/4541 cut-off events. [2019-12-18 19:28:01,660 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:28:01,713 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5039 conditions, 4541 events. 848/4541 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 38159 event pairs. 736/4493 useless extension candidates. Maximal degree in co-relation 2504. Up to 448 conditions per place. [2019-12-18 19:28:01,831 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 4550 [2019-12-18 19:28:01,831 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 19:28:03,565 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-12-18 19:28:03,652 INFO L206 etLargeBlockEncoding]: Checked pairs total: 11010 [2019-12-18 19:28:03,653 INFO L214 etLargeBlockEncoding]: Total number of compositions: 65 [2019-12-18 19:28:03,653 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 48 transitions Received shutdown request... [2019-12-18 19:29:40,629 WARN L527 AbstractCegarLoop]: Verification canceled [2019-12-18 19:29:40,632 WARN L227 ceAbstractionStarter]: Timeout [2019-12-18 19:29:40,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 07:29:40 BasicIcfg [2019-12-18 19:29:40,633 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 19:29:40,634 INFO L168 Benchmark]: Toolchain (without parser) took 223570.83 ms. Allocated memory was 145.2 MB in the beginning and 2.7 GB in the end (delta: 2.6 GB). Free memory was 101.5 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. [2019-12-18 19:29:40,635 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-12-18 19:29:40,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 784.99 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 101.1 MB in the beginning and 158.5 MB in the end (delta: -57.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2019-12-18 19:29:40,636 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.45 ms. Allocated memory is still 201.9 MB. Free memory was 158.5 MB in the beginning and 156.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-18 19:29:40,644 INFO L168 Benchmark]: Boogie Preprocessor took 46.97 ms. Allocated memory is still 201.9 MB. Free memory was 156.6 MB in the beginning and 154.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-18 19:29:40,646 INFO L168 Benchmark]: RCFGBuilder took 448.63 ms. Allocated memory is still 201.9 MB. Free memory was 154.6 MB in the beginning and 133.4 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2019-12-18 19:29:40,646 INFO L168 Benchmark]: TraceAbstraction took 222227.27 ms. Allocated memory was 201.9 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 132.7 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. [2019-12-18 19:29:40,653 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 784.99 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 101.1 MB in the beginning and 158.5 MB in the end (delta: -57.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.45 ms. Allocated memory is still 201.9 MB. Free memory was 158.5 MB in the beginning and 156.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 46.97 ms. Allocated memory is still 201.9 MB. Free memory was 156.6 MB in the beginning and 154.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 448.63 ms. Allocated memory is still 201.9 MB. Free memory was 154.6 MB in the beginning and 133.4 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222227.27 ms. Allocated memory was 201.9 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 132.7 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 63 ProgramPointsBefore, 14 ProgramPointsAfterwards, 66 TransitionsBefore, 14 TransitionsAfterwards, 370 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 4 ChoiceCompositions, 183 VarBasedMoverChecksPositive, 4 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 4 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 289 CheckedPairsTotal, 56 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 71 ProgramPointsBefore, 24 ProgramPointsAfterwards, 73 TransitionsBefore, 23 TransitionsAfterwards, 900 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 4 ChoiceCompositions, 457 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 15 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1597 CheckedPairsTotal, 55 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 79 ProgramPointsBefore, 30 ProgramPointsAfterwards, 80 TransitionsBefore, 28 TransitionsAfterwards, 1470 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 4 ChoiceCompositions, 760 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 24 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 2828 CheckedPairsTotal, 56 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 87 ProgramPointsBefore, 36 ProgramPointsAfterwards, 87 TransitionsBefore, 33 TransitionsAfterwards, 2120 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 4 ChoiceCompositions, 1032 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 3986 CheckedPairsTotal, 59 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 95 ProgramPointsBefore, 42 ProgramPointsAfterwards, 94 TransitionsBefore, 38 TransitionsAfterwards, 2850 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 4 ChoiceCompositions, 1370 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 40 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 6149 CheckedPairsTotal, 60 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.5s, 103 ProgramPointsBefore, 48 ProgramPointsAfterwards, 101 TransitionsBefore, 43 TransitionsAfterwards, 3660 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 4 ChoiceCompositions, 1751 VarBasedMoverChecksPositive, 45 VarBasedMoverChecksNegative, 30 SemBasedMoverChecksPositive, 40 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 7553 CheckedPairsTotal, 62 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 4.9s, 111 ProgramPointsBefore, 54 ProgramPointsAfterwards, 108 TransitionsBefore, 48 TransitionsAfterwards, 4550 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 4 ChoiceCompositions, 2261 VarBasedMoverChecksPositive, 62 VarBasedMoverChecksNegative, 42 SemBasedMoverChecksPositive, 60 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 0 MoverChecksTotal, 11010 CheckedPairsTotal, 65 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 675]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 675). Cancelled while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 54 places, 48 transitions. Already constructed 237396 states. Currently 34499 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 60 locations, 1 error locations. Result: TIMEOUT, OverallTime: 101.9s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown