/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-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 19:27:34,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 19:27:34,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 19:27:34,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 19:27:34,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 19:27:34,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 19:27:34,912 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 19:27:34,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 19:27:34,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 19:27:34,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 19:27:34,931 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 19:27:34,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 19:27:34,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 19:27:34,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 19:27:34,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 19:27:34,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 19:27:34,941 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 19:27:34,942 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 19:27:34,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 19:27:34,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 19:27:34,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 19:27:34,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 19:27:34,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 19:27:34,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 19:27:34,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-18 19:27:34,963 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-18 19:27:34,963 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-18 19:27:34,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-18 19:27:34,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-18 19:27:34,967 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-18 19:27:34,967 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 19:27:34,969 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 19:27:34,970 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 19:27:34,971 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 19:27:34,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 19:27:34,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 19:27:34,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 19:27:34,974 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 19:27:34,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 19:27:34,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 19:27:34,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 19:27:34,977 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 19:27:35,008 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 19:27:35,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 19:27:35,010 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 19:27:35,010 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 19:27:35,010 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 19:27:35,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 19:27:35,011 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 19:27:35,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 19:27:35,011 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 19:27:35,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 19:27:35,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 19:27:35,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 19:27:35,012 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 19:27:35,012 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 19:27:35,012 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 19:27:35,013 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 19:27:35,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 19:27:35,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 19:27:35,013 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 19:27:35,013 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 19:27:35,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 19:27:35,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 19:27:35,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 19:27:35,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 19:27:35,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 19:27:35,015 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 19:27:35,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 19:27:35,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 19:27:35,015 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 19:27:35,269 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 19:27:35,285 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 19:27:35,289 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 19:27:35,291 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 19:27:35,291 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 19:27:35,292 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-array-2.i [2019-12-18 19:27:35,362 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/facb5fb7b/efc9dfbaf4ac46d681a60314f9967f2f/FLAGa47e24c53 [2019-12-18 19:27:35,960 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 19:27:35,964 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-array-2.i [2019-12-18 19:27:35,982 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/facb5fb7b/efc9dfbaf4ac46d681a60314f9967f2f/FLAGa47e24c53 [2019-12-18 19:27:36,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/facb5fb7b/efc9dfbaf4ac46d681a60314f9967f2f [2019-12-18 19:27:36,175 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 19:27:36,177 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 19:27:36,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 19:27:36,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 19:27:36,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 19:27:36,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:27:36" (1/1) ... [2019-12-18 19:27:36,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@248fca8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:27:36, skipping insertion in model container [2019-12-18 19:27:36,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:27:36" (1/1) ... [2019-12-18 19:27:36,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 19:27:36,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 19:27:36,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 19:27:36,706 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 19:27:36,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 19:27:36,832 INFO L208 MainTranslator]: Completed translation [2019-12-18 19:27:36,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:27:36 WrapperNode [2019-12-18 19:27:36,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 19:27:36,834 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 19:27:36,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 19:27:36,834 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 19:27:36,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:27:36" (1/1) ... [2019-12-18 19:27:36,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:27:36" (1/1) ... [2019-12-18 19:27:36,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 19:27:36,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 19:27:36,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 19:27:36,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 19:27:36,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:27:36" (1/1) ... [2019-12-18 19:27:36,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:27:36" (1/1) ... [2019-12-18 19:27:36,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:27:36" (1/1) ... [2019-12-18 19:27:36,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:27:36" (1/1) ... [2019-12-18 19:27:36,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:27:36" (1/1) ... [2019-12-18 19:27:36,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:27:36" (1/1) ... [2019-12-18 19:27:36,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:27:36" (1/1) ... [2019-12-18 19:27:36,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 19:27:36,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 19:27:36,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 19:27:36,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 19:27:36,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:27:36" (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 19:27:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-12-18 19:27:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-18 19:27:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 19:27:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2019-12-18 19:27:36,974 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2019-12-18 19:27:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 19:27:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 19:27:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 19:27:36,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 19:27:36,979 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 19:27:37,346 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 19:27:37,347 INFO L287 CfgBuilder]: Removed 9 assume(true) statements. [2019-12-18 19:27:37,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:27:37 BoogieIcfgContainer [2019-12-18 19:27:37,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 19:27:37,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 19:27:37,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 19:27:37,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 19:27:37,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 07:27:36" (1/3) ... [2019-12-18 19:27:37,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e1f280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:27:37, skipping insertion in model container [2019-12-18 19:27:37,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:27:36" (2/3) ... [2019-12-18 19:27:37,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e1f280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:27:37, skipping insertion in model container [2019-12-18 19:27:37,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:27:37" (3/3) ... [2019-12-18 19:27:37,357 INFO L109 eAbstractionObserver]: Analyzing ICFG nondet-array-2.i [2019-12-18 19:27:37,367 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 19:27:37,368 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 19:27:37,374 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-18 19:27:37,375 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 19:27:37,399 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:37,399 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:37,399 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:37,400 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:37,400 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:37,400 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:37,401 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:37,404 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:37,405 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:37,405 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:37,405 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:37,406 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:37,426 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 19:27:37,447 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 19:27:37,448 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 19:27:37,448 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 19:27:37,448 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 19:27:37,448 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 19:27:37,448 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 19:27:37,449 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 19:27:37,449 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 19:27:37,463 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 66 transitions [2019-12-18 19:27:37,465 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 66 transitions [2019-12-18 19:27:37,513 INFO L126 PetriNetUnfolder]: 11/98 cut-off events. [2019-12-18 19:27:37,513 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:27:37,520 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 19:27:37,524 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 66 transitions [2019-12-18 19:27:37,549 INFO L126 PetriNetUnfolder]: 11/98 cut-off events. [2019-12-18 19:27:37,550 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:27:37,551 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 19:27:37,553 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 370 [2019-12-18 19:27:37,554 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 19:27:39,098 WARN L192 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-12-18 19:27:39,223 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2019-12-18 19:27:39,273 INFO L206 etLargeBlockEncoding]: Checked pairs total: 289 [2019-12-18 19:27:39,274 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2019-12-18 19:27:39,280 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 14 places, 14 transitions [2019-12-18 19:27:39,289 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 27 states. [2019-12-18 19:27:39,291 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-12-18 19:27:39,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-18 19:27:39,300 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:27:39,301 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-18 19:27:39,302 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:27:39,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:27:39,312 INFO L82 PathProgramCache]: Analyzing trace with hash 7975439, now seen corresponding path program 1 times [2019-12-18 19:27:39,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:27:39,327 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601944455] [2019-12-18 19:27:39,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:27:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:27:39,561 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 19:27:39,562 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601944455] [2019-12-18 19:27:39,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:27:39,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 19:27:39,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925795521] [2019-12-18 19:27:39,580 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 19:27:39,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:27:39,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 19:27:39,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:27:39,605 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2019-12-18 19:27:39,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:27:39,660 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2019-12-18 19:27:39,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 19:27:39,663 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-18 19:27:39,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:27:39,678 INFO L225 Difference]: With dead ends: 27 [2019-12-18 19:27:39,678 INFO L226 Difference]: Without dead ends: 23 [2019-12-18 19:27:39,680 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 19:27:39,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-18 19:27:39,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-18 19:27:39,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-18 19:27:39,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 32 transitions. [2019-12-18 19:27:39,719 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 32 transitions. Word has length 4 [2019-12-18 19:27:39,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:27:39,720 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 32 transitions. [2019-12-18 19:27:39,720 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 19:27:39,720 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2019-12-18 19:27:39,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-18 19:27:39,721 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:27:39,721 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-12-18 19:27:39,721 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:27:39,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:27:39,722 INFO L82 PathProgramCache]: Analyzing trace with hash -940684826, now seen corresponding path program 1 times [2019-12-18 19:27:39,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:27:39,722 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987035751] [2019-12-18 19:27:39,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:27:39,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:27:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:27:39,851 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 19:27:39,851 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 19:27:39,853 WARN L364 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 19:27:39,853 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2019-12-18 19:27:39,859 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:39,859 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:39,860 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:39,860 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:39,860 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:39,860 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:39,860 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:39,861 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:39,861 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:39,861 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:39,861 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:39,861 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:39,862 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:39,862 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:39,862 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:39,863 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:39,863 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:39,863 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:39,863 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:39,865 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:39,865 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:39,866 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:39,866 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:39,866 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:39,876 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 19:27:39,877 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 19:27:39,877 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 19:27:39,877 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 19:27:39,877 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 19:27:39,877 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 19:27:39,877 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 19:27:39,878 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 19:27:39,878 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 19:27:39,882 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 73 transitions [2019-12-18 19:27:39,882 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 71 places, 73 transitions [2019-12-18 19:27:39,946 INFO L126 PetriNetUnfolder]: 22/178 cut-off events. [2019-12-18 19:27:39,947 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:27:39,949 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 19:27:39,954 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 71 places, 73 transitions [2019-12-18 19:27:39,999 INFO L126 PetriNetUnfolder]: 22/178 cut-off events. [2019-12-18 19:27:39,999 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:27:40,001 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 19:27:40,004 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 900 [2019-12-18 19:27:40,005 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 19:27:41,253 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-12-18 19:27:41,341 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1597 [2019-12-18 19:27:41,342 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2019-12-18 19:27:41,342 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 23 transitions [2019-12-18 19:27:41,353 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 242 states. [2019-12-18 19:27:41,354 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2019-12-18 19:27:41,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-18 19:27:41,354 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:27:41,355 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-18 19:27:41,355 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:27:41,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:27:41,355 INFO L82 PathProgramCache]: Analyzing trace with hash 12287151, now seen corresponding path program 1 times [2019-12-18 19:27:41,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:27:41,356 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788062408] [2019-12-18 19:27:41,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:27:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:27:41,404 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 19:27:41,405 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788062408] [2019-12-18 19:27:41,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:27:41,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 19:27:41,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399973053] [2019-12-18 19:27:41,406 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 19:27:41,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:27:41,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 19:27:41,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:27:41,407 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 3 states. [2019-12-18 19:27:41,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:27:41,437 INFO L93 Difference]: Finished difference Result 292 states and 661 transitions. [2019-12-18 19:27:41,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 19:27:41,438 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-18 19:27:41,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:27:41,444 INFO L225 Difference]: With dead ends: 292 [2019-12-18 19:27:41,444 INFO L226 Difference]: Without dead ends: 241 [2019-12-18 19:27:41,445 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 19:27:41,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2019-12-18 19:27:41,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2019-12-18 19:27:41,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2019-12-18 19:27:41,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 550 transitions. [2019-12-18 19:27:41,478 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 550 transitions. Word has length 4 [2019-12-18 19:27:41,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:27:41,478 INFO L462 AbstractCegarLoop]: Abstraction has 241 states and 550 transitions. [2019-12-18 19:27:41,478 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 19:27:41,479 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 550 transitions. [2019-12-18 19:27:41,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-18 19:27:41,479 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:27:41,479 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-18 19:27:41,479 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:27:41,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:27:41,480 INFO L82 PathProgramCache]: Analyzing trace with hash 380901951, now seen corresponding path program 1 times [2019-12-18 19:27:41,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:27:41,480 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217175210] [2019-12-18 19:27:41,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:27:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:27:41,528 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 19:27:41,528 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217175210] [2019-12-18 19:27:41,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:27:41,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 19:27:41,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037247076] [2019-12-18 19:27:41,530 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 19:27:41,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:27:41,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 19:27:41,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:27:41,530 INFO L87 Difference]: Start difference. First operand 241 states and 550 transitions. Second operand 3 states. [2019-12-18 19:27:41,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:27:41,562 INFO L93 Difference]: Finished difference Result 241 states and 549 transitions. [2019-12-18 19:27:41,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 19:27:41,562 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-12-18 19:27:41,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:27:41,565 INFO L225 Difference]: With dead ends: 241 [2019-12-18 19:27:41,566 INFO L226 Difference]: Without dead ends: 241 [2019-12-18 19:27:41,567 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 19:27:41,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2019-12-18 19:27:41,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2019-12-18 19:27:41,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2019-12-18 19:27:41,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 549 transitions. [2019-12-18 19:27:41,589 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 549 transitions. Word has length 5 [2019-12-18 19:27:41,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:27:41,589 INFO L462 AbstractCegarLoop]: Abstraction has 241 states and 549 transitions. [2019-12-18 19:27:41,589 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 19:27:41,590 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 549 transitions. [2019-12-18 19:27:41,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 19:27:41,590 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:27:41,590 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:27:41,591 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:27:41,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:27:41,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1705906013, now seen corresponding path program 1 times [2019-12-18 19:27:41,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:27:41,592 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858365726] [2019-12-18 19:27:41,592 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:27:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:27:41,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 19:27:41,648 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858365726] [2019-12-18 19:27:41,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:27:41,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:27:41,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102558159] [2019-12-18 19:27:41,649 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 19:27:41,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:27:41,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 19:27:41,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:27:41,649 INFO L87 Difference]: Start difference. First operand 241 states and 549 transitions. Second operand 4 states. [2019-12-18 19:27:41,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:27:41,682 INFO L93 Difference]: Finished difference Result 203 states and 426 transitions. [2019-12-18 19:27:41,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 19:27:41,682 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-18 19:27:41,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:27:41,684 INFO L225 Difference]: With dead ends: 203 [2019-12-18 19:27:41,685 INFO L226 Difference]: Without dead ends: 203 [2019-12-18 19:27:41,685 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 19:27:41,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2019-12-18 19:27:41,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 197. [2019-12-18 19:27:41,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2019-12-18 19:27:41,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 420 transitions. [2019-12-18 19:27:41,698 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 420 transitions. Word has length 9 [2019-12-18 19:27:41,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:27:41,699 INFO L462 AbstractCegarLoop]: Abstraction has 197 states and 420 transitions. [2019-12-18 19:27:41,699 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 19:27:41,699 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 420 transitions. [2019-12-18 19:27:41,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 19:27:41,700 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:27:41,700 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2019-12-18 19:27:41,701 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:27:41,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:27:41,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1086197660, now seen corresponding path program 1 times [2019-12-18 19:27:41,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:27:41,701 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182154834] [2019-12-18 19:27:41,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:27:41,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:27:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:27:41,741 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 19:27:41,741 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 19:27:41,741 WARN L364 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 19:27:41,741 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2019-12-18 19:27:41,750 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,750 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,752 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,752 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,752 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,752 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,752 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,754 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,755 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,755 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,755 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,755 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,755 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,756 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,756 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,756 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,756 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,757 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,757 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,757 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,757 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,758 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,758 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,758 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,758 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,758 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,769 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,770 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,771 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,771 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,771 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,772 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,773 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,773 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,774 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,774 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:41,781 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 19:27:41,782 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 19:27:41,782 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 19:27:41,782 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 19:27:41,782 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 19:27:41,782 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 19:27:41,782 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 19:27:41,782 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 19:27:41,782 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 19:27:41,784 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 80 transitions [2019-12-18 19:27:41,784 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 79 places, 80 transitions [2019-12-18 19:27:41,828 INFO L126 PetriNetUnfolder]: 44/325 cut-off events. [2019-12-18 19:27:41,828 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:27:41,832 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 19:27:41,837 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 79 places, 80 transitions [2019-12-18 19:27:41,866 INFO L126 PetriNetUnfolder]: 44/325 cut-off events. [2019-12-18 19:27:41,867 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:27:41,870 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 19:27:41,875 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1470 [2019-12-18 19:27:41,875 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 19:27:43,315 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-12-18 19:27:43,398 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2828 [2019-12-18 19:27:43,398 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2019-12-18 19:27:43,399 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 28 transitions [2019-12-18 19:27:43,444 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1150 states. [2019-12-18 19:27:43,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states. [2019-12-18 19:27:43,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-18 19:27:43,445 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:27:43,445 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-18 19:27:43,446 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:27:43,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:27:43,446 INFO L82 PathProgramCache]: Analyzing trace with hash 16813297, now seen corresponding path program 1 times [2019-12-18 19:27:43,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:27:43,447 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291728544] [2019-12-18 19:27:43,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:27:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:27:43,484 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 19:27:43,484 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291728544] [2019-12-18 19:27:43,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:27:43,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 19:27:43,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417350563] [2019-12-18 19:27:43,485 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 19:27:43,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:27:43,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 19:27:43,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:27:43,485 INFO L87 Difference]: Start difference. First operand 1150 states. Second operand 3 states. [2019-12-18 19:27:43,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:27:43,517 INFO L93 Difference]: Finished difference Result 1400 states and 4061 transitions. [2019-12-18 19:27:43,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 19:27:43,517 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-18 19:27:43,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:27:43,528 INFO L225 Difference]: With dead ends: 1400 [2019-12-18 19:27:43,528 INFO L226 Difference]: Without dead ends: 1149 [2019-12-18 19:27:43,529 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 19:27:43,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2019-12-18 19:27:43,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1149. [2019-12-18 19:27:43,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1149 states. [2019-12-18 19:27:43,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 3360 transitions. [2019-12-18 19:27:43,596 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 3360 transitions. Word has length 4 [2019-12-18 19:27:43,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:27:43,597 INFO L462 AbstractCegarLoop]: Abstraction has 1149 states and 3360 transitions. [2019-12-18 19:27:43,597 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 19:27:43,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 3360 transitions. [2019-12-18 19:27:43,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-18 19:27:43,601 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:27:43,601 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-18 19:27:43,602 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:27:43,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:27:43,602 INFO L82 PathProgramCache]: Analyzing trace with hash 521212778, now seen corresponding path program 1 times [2019-12-18 19:27:43,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:27:43,603 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083020990] [2019-12-18 19:27:43,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:27:43,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:27:43,654 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 19:27:43,655 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083020990] [2019-12-18 19:27:43,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:27:43,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 19:27:43,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795981598] [2019-12-18 19:27:43,656 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 19:27:43,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:27:43,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 19:27:43,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:27:43,657 INFO L87 Difference]: Start difference. First operand 1149 states and 3360 transitions. Second operand 3 states. [2019-12-18 19:27:43,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:27:43,688 INFO L93 Difference]: Finished difference Result 1149 states and 3359 transitions. [2019-12-18 19:27:43,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 19:27:43,689 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-12-18 19:27:43,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:27:43,697 INFO L225 Difference]: With dead ends: 1149 [2019-12-18 19:27:43,697 INFO L226 Difference]: Without dead ends: 1149 [2019-12-18 19:27:43,697 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 19:27:43,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2019-12-18 19:27:43,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1149. [2019-12-18 19:27:43,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1149 states. [2019-12-18 19:27:43,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 3359 transitions. [2019-12-18 19:27:43,737 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 3359 transitions. Word has length 5 [2019-12-18 19:27:43,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:27:43,738 INFO L462 AbstractCegarLoop]: Abstraction has 1149 states and 3359 transitions. [2019-12-18 19:27:43,738 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 19:27:43,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 3359 transitions. [2019-12-18 19:27:43,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 19:27:43,740 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:27:43,741 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:27:43,741 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:27:43,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:27:43,741 INFO L82 PathProgramCache]: Analyzing trace with hash -353960300, now seen corresponding path program 1 times [2019-12-18 19:27:43,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:27:43,741 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375827729] [2019-12-18 19:27:43,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:27:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:27:43,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 19:27:43,803 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375827729] [2019-12-18 19:27:43,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:27:43,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:27:43,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145706878] [2019-12-18 19:27:43,804 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 19:27:43,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:27:43,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 19:27:43,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:27:43,805 INFO L87 Difference]: Start difference. First operand 1149 states and 3359 transitions. Second operand 4 states. [2019-12-18 19:27:43,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:27:43,863 INFO L93 Difference]: Finished difference Result 1015 states and 2784 transitions. [2019-12-18 19:27:43,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 19:27:43,863 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-18 19:27:43,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:27:43,870 INFO L225 Difference]: With dead ends: 1015 [2019-12-18 19:27:43,870 INFO L226 Difference]: Without dead ends: 1015 [2019-12-18 19:27:43,871 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 19:27:43,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2019-12-18 19:27:43,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 977. [2019-12-18 19:27:43,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 977 states. [2019-12-18 19:27:43,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 2718 transitions. [2019-12-18 19:27:43,922 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 2718 transitions. Word has length 9 [2019-12-18 19:27:43,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:27:43,922 INFO L462 AbstractCegarLoop]: Abstraction has 977 states and 2718 transitions. [2019-12-18 19:27:43,923 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 19:27:43,923 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 2718 transitions. [2019-12-18 19:27:43,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-18 19:27:43,925 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:27:43,925 INFO L411 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2019-12-18 19:27:43,925 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:27:43,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:27:43,925 INFO L82 PathProgramCache]: Analyzing trace with hash 880459202, now seen corresponding path program 1 times [2019-12-18 19:27:43,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:27:43,926 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233752962] [2019-12-18 19:27:43,926 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:27:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:27:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:27:43,956 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 19:27:43,956 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 19:27:43,956 WARN L364 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 19:27:43,956 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2019-12-18 19:27:43,968 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,969 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,969 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,969 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,969 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,969 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,970 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,970 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,970 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,970 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,970 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,970 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,971 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,972 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,972 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,972 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,973 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,973 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,973 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,973 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,973 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,973 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,974 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,974 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,974 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,974 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,974 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,974 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,975 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,975 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,975 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,975 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,975 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,989 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,990 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,990 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,990 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,990 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,993 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,993 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,993 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,993 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,993 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,995 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,995 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,996 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,996 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:43,996 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:44,000 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 19:27:44,000 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 19:27:44,000 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 19:27:44,001 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 19:27:44,001 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 19:27:44,001 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 19:27:44,001 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 19:27:44,001 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 19:27:44,001 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 19:27:44,003 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 87 transitions [2019-12-18 19:27:44,003 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 87 places, 87 transitions [2019-12-18 19:27:44,072 INFO L126 PetriNetUnfolder]: 90/608 cut-off events. [2019-12-18 19:27:44,073 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:27:44,078 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 19:27:44,091 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 87 places, 87 transitions [2019-12-18 19:27:44,157 INFO L126 PetriNetUnfolder]: 90/608 cut-off events. [2019-12-18 19:27:44,157 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:27:44,162 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 19:27:44,178 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2120 [2019-12-18 19:27:44,179 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 19:27:45,358 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-12-18 19:27:45,509 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3986 [2019-12-18 19:27:45,509 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2019-12-18 19:27:45,510 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 33 transitions [2019-12-18 19:27:45,875 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5482 states. [2019-12-18 19:27:45,875 INFO L276 IsEmpty]: Start isEmpty. Operand 5482 states. [2019-12-18 19:27:45,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-18 19:27:45,876 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:27:45,876 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-18 19:27:45,876 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:27:45,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:27:45,876 INFO L82 PathProgramCache]: Analyzing trace with hash 21615603, now seen corresponding path program 1 times [2019-12-18 19:27:45,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:27:45,877 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937739585] [2019-12-18 19:27:45,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:27:45,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:27:45,892 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 19:27:45,892 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937739585] [2019-12-18 19:27:45,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:27:45,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 19:27:45,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341534322] [2019-12-18 19:27:45,893 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 19:27:45,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:27:45,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 19:27:45,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:27:45,894 INFO L87 Difference]: Start difference. First operand 5482 states. Second operand 3 states. [2019-12-18 19:27:45,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:27:45,975 INFO L93 Difference]: Finished difference Result 5482 states and 19554 transitions. [2019-12-18 19:27:45,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 19:27:45,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-18 19:27:45,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:27:46,018 INFO L225 Difference]: With dead ends: 5482 [2019-12-18 19:27:46,018 INFO L226 Difference]: Without dead ends: 4856 [2019-12-18 19:27:46,019 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 19:27:46,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2019-12-18 19:27:46,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2019-12-18 19:27:46,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2019-12-18 19:27:46,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 17428 transitions. [2019-12-18 19:27:46,280 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 17428 transitions. Word has length 4 [2019-12-18 19:27:46,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:27:46,281 INFO L462 AbstractCegarLoop]: Abstraction has 4856 states and 17428 transitions. [2019-12-18 19:27:46,281 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 19:27:46,281 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 17428 transitions. [2019-12-18 19:27:46,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 19:27:46,282 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:27:46,282 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:27:46,282 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:27:46,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:27:46,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1297801215, now seen corresponding path program 1 times [2019-12-18 19:27:46,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:27:46,284 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549523795] [2019-12-18 19:27:46,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:27:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:27:46,317 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 19:27:46,317 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549523795] [2019-12-18 19:27:46,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:27:46,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 19:27:46,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977032434] [2019-12-18 19:27:46,319 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 19:27:46,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:27:46,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 19:27:46,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:27:46,319 INFO L87 Difference]: Start difference. First operand 4856 states and 17428 transitions. Second operand 3 states. [2019-12-18 19:27:46,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:27:46,366 INFO L93 Difference]: Finished difference Result 5481 states and 19553 transitions. [2019-12-18 19:27:46,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 19:27:46,367 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-18 19:27:46,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:27:46,416 INFO L225 Difference]: With dead ends: 5481 [2019-12-18 19:27:46,416 INFO L226 Difference]: Without dead ends: 5481 [2019-12-18 19:27:46,417 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 19:27:46,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5481 states. [2019-12-18 19:27:46,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5481 to 5481. [2019-12-18 19:27:46,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5481 states. [2019-12-18 19:27:46,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 19553 transitions. [2019-12-18 19:27:46,626 INFO L78 Accepts]: Start accepts. Automaton has 5481 states and 19553 transitions. Word has length 8 [2019-12-18 19:27:46,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:27:46,627 INFO L462 AbstractCegarLoop]: Abstraction has 5481 states and 19553 transitions. [2019-12-18 19:27:46,627 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 19:27:46,627 INFO L276 IsEmpty]: Start isEmpty. Operand 5481 states and 19553 transitions. [2019-12-18 19:27:46,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 19:27:46,627 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:27:46,628 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:27:46,628 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:27:46,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:27:46,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1577131179, now seen corresponding path program 1 times [2019-12-18 19:27:46,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:27:46,629 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572377605] [2019-12-18 19:27:46,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:27:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:27:46,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 19:27:46,658 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572377605] [2019-12-18 19:27:46,658 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412765105] [2019-12-18 19:27:46,658 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 19:27:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:27:46,719 INFO L264 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-18 19:27:46,721 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:27:46,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 19:27:46,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:27:46,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2019-12-18 19:27:46,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718641474] [2019-12-18 19:27:46,756 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-18 19:27:46,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:27:46,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-18 19:27:46,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-18 19:27:46,757 INFO L87 Difference]: Start difference. First operand 5481 states and 19553 transitions. Second operand 6 states. [2019-12-18 19:27:46,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:27:46,821 INFO L93 Difference]: Finished difference Result 5481 states and 19549 transitions. [2019-12-18 19:27:46,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 19:27:46,822 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2019-12-18 19:27:46,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:27:46,847 INFO L225 Difference]: With dead ends: 5481 [2019-12-18 19:27:46,848 INFO L226 Difference]: Without dead ends: 5481 [2019-12-18 19:27:46,848 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 19:27:46,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5481 states. [2019-12-18 19:27:47,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5481 to 5481. [2019-12-18 19:27:47,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5481 states. [2019-12-18 19:27:47,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 19549 transitions. [2019-12-18 19:27:47,109 INFO L78 Accepts]: Start accepts. Automaton has 5481 states and 19549 transitions. Word has length 9 [2019-12-18 19:27:47,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:27:47,110 INFO L462 AbstractCegarLoop]: Abstraction has 5481 states and 19549 transitions. [2019-12-18 19:27:47,110 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-18 19:27:47,110 INFO L276 IsEmpty]: Start isEmpty. Operand 5481 states and 19549 transitions. [2019-12-18 19:27:47,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-18 19:27:47,112 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:27:47,112 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:27:47,315 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:27:47,316 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:27:47,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:27:47,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1902302392, now seen corresponding path program 1 times [2019-12-18 19:27:47,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:27:47,318 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730186568] [2019-12-18 19:27:47,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:27:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:27:47,359 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 19:27:47,359 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730186568] [2019-12-18 19:27:47,359 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407536117] [2019-12-18 19:27:47,360 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 19:27:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:27:47,426 INFO L264 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-18 19:27:47,428 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:27:47,462 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 19:27:47,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:27:47,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2019-12-18 19:27:47,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927921075] [2019-12-18 19:27:47,463 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-18 19:27:47,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:27:47,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-18 19:27:47,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-12-18 19:27:47,464 INFO L87 Difference]: Start difference. First operand 5481 states and 19549 transitions. Second operand 8 states. [2019-12-18 19:27:47,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:27:47,531 INFO L93 Difference]: Finished difference Result 5481 states and 19533 transitions. [2019-12-18 19:27:47,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 19:27:47,531 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2019-12-18 19:27:47,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:27:47,553 INFO L225 Difference]: With dead ends: 5481 [2019-12-18 19:27:47,553 INFO L226 Difference]: Without dead ends: 5481 [2019-12-18 19:27:47,555 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 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 19:27:47,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5481 states. [2019-12-18 19:27:47,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5481 to 5481. [2019-12-18 19:27:47,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5481 states. [2019-12-18 19:27:47,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 19533 transitions. [2019-12-18 19:27:47,720 INFO L78 Accepts]: Start accepts. Automaton has 5481 states and 19533 transitions. Word has length 13 [2019-12-18 19:27:47,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:27:47,720 INFO L462 AbstractCegarLoop]: Abstraction has 5481 states and 19533 transitions. [2019-12-18 19:27:47,720 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-18 19:27:47,720 INFO L276 IsEmpty]: Start isEmpty. Operand 5481 states and 19533 transitions. [2019-12-18 19:27:47,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-18 19:27:47,722 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:27:47,722 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:27:47,926 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:27:47,926 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:27:47,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:27:47,927 INFO L82 PathProgramCache]: Analyzing trace with hash 654736636, now seen corresponding path program 1 times [2019-12-18 19:27:47,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:27:47,927 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93543230] [2019-12-18 19:27:47,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:27:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:27:47,980 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 19:27:47,980 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93543230] [2019-12-18 19:27:47,980 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576358505] [2019-12-18 19:27:47,980 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 19:27:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:27:48,505 INFO L264 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-18 19:27:48,506 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:27:48,574 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 19:27:48,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:27:48,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2019-12-18 19:27:48,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390970177] [2019-12-18 19:27:48,577 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-18 19:27:48,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:27:48,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-18 19:27:48,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2019-12-18 19:27:48,578 INFO L87 Difference]: Start difference. First operand 5481 states and 19533 transitions. Second operand 10 states. [2019-12-18 19:27:48,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:27:48,655 INFO L93 Difference]: Finished difference Result 5481 states and 19469 transitions. [2019-12-18 19:27:48,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-18 19:27:48,656 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2019-12-18 19:27:48,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:27:48,674 INFO L225 Difference]: With dead ends: 5481 [2019-12-18 19:27:48,675 INFO L226 Difference]: Without dead ends: 5481 [2019-12-18 19:27:48,675 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 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 19:27:48,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5481 states. [2019-12-18 19:27:48,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5481 to 5481. [2019-12-18 19:27:48,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5481 states. [2019-12-18 19:27:48,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 19469 transitions. [2019-12-18 19:27:48,843 INFO L78 Accepts]: Start accepts. Automaton has 5481 states and 19469 transitions. Word has length 17 [2019-12-18 19:27:48,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:27:48,844 INFO L462 AbstractCegarLoop]: Abstraction has 5481 states and 19469 transitions. [2019-12-18 19:27:48,845 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-18 19:27:48,845 INFO L276 IsEmpty]: Start isEmpty. Operand 5481 states and 19469 transitions. [2019-12-18 19:27:48,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-18 19:27:48,847 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:27:48,847 INFO L411 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2019-12-18 19:27:49,055 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:27:49,055 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:27:49,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:27:49,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1144536387, now seen corresponding path program 1 times [2019-12-18 19:27:49,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:27:49,056 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178483883] [2019-12-18 19:27:49,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:27:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:27:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:27:49,101 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 19:27:49,101 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 19:27:49,101 WARN L364 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 19:27:49,101 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2019-12-18 19:27:49,110 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,111 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,111 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,111 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,111 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,111 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,111 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,112 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,112 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,112 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,112 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,112 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,112 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,113 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,113 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,113 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,113 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,113 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,113 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,113 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,114 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,114 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,114 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,114 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,114 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,114 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,115 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,115 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,115 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,115 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,115 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,116 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,116 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,116 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,116 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,116 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,117 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,117 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,117 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,117 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,118 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,119 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,119 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,119 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,119 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,120 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,120 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,121 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,121 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,121 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,122 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,122 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,122 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,122 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,123 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,124 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,124 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,124 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,124 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,124 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:27:49,129 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 19:27:49,129 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 19:27:49,130 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 19:27:49,130 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 19:27:49,130 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 19:27:49,130 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 19:27:49,130 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 19:27:49,130 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 19:27:49,130 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 19:27:49,131 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 94 transitions [2019-12-18 19:27:49,131 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 95 places, 94 transitions [2019-12-18 19:27:49,256 INFO L126 PetriNetUnfolder]: 188/1167 cut-off events. [2019-12-18 19:27:49,256 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:27:49,267 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 19:27:49,297 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 95 places, 94 transitions [2019-12-18 19:27:49,420 INFO L126 PetriNetUnfolder]: 188/1167 cut-off events. [2019-12-18 19:27:49,420 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:27:49,433 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 19:27:49,460 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2850 [2019-12-18 19:27:49,460 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 19:27:50,865 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-12-18 19:27:50,978 INFO L206 etLargeBlockEncoding]: Checked pairs total: 6149 [2019-12-18 19:27:50,979 INFO L214 etLargeBlockEncoding]: Total number of compositions: 60 [2019-12-18 19:27:50,979 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 38 transitions [2019-12-18 19:27:52,998 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26310 states. [2019-12-18 19:27:52,998 INFO L276 IsEmpty]: Start isEmpty. Operand 26310 states. [2019-12-18 19:27:52,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-18 19:27:52,998 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:27:52,999 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-18 19:27:52,999 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:27:52,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:27:52,999 INFO L82 PathProgramCache]: Analyzing trace with hash 26696947, now seen corresponding path program 1 times [2019-12-18 19:27:52,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:27:52,999 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714387729] [2019-12-18 19:27:53,000 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:27:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:27:53,028 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 19:27:53,028 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714387729] [2019-12-18 19:27:53,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:27:53,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 19:27:53,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277621070] [2019-12-18 19:27:53,029 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 19:27:53,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:27:53,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 19:27:53,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:27:53,030 INFO L87 Difference]: Start difference. First operand 26310 states. Second operand 3 states. [2019-12-18 19:27:53,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:27:53,266 INFO L93 Difference]: Finished difference Result 32560 states and 135677 transitions. [2019-12-18 19:27:53,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 19:27:53,266 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-18 19:27:53,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:27:53,374 INFO L225 Difference]: With dead ends: 32560 [2019-12-18 19:27:53,374 INFO L226 Difference]: Without dead ends: 26309 [2019-12-18 19:27:53,375 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 19:27:53,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26309 states. [2019-12-18 19:27:55,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26309 to 26309. [2019-12-18 19:27:55,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26309 states. [2019-12-18 19:27:55,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26309 states to 26309 states and 110676 transitions. [2019-12-18 19:27:55,401 INFO L78 Accepts]: Start accepts. Automaton has 26309 states and 110676 transitions. Word has length 4 [2019-12-18 19:27:55,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:27:55,401 INFO L462 AbstractCegarLoop]: Abstraction has 26309 states and 110676 transitions. [2019-12-18 19:27:55,401 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 19:27:55,401 INFO L276 IsEmpty]: Start isEmpty. Operand 26309 states and 110676 transitions. [2019-12-18 19:27:55,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-18 19:27:55,401 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:27:55,401 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-18 19:27:55,401 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:27:55,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:27:55,402 INFO L82 PathProgramCache]: Analyzing trace with hash 827606282, now seen corresponding path program 1 times [2019-12-18 19:27:55,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:27:55,402 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763606124] [2019-12-18 19:27:55,402 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:27:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:27:55,436 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 19:27:55,436 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763606124] [2019-12-18 19:27:55,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:27:55,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 19:27:55,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313964942] [2019-12-18 19:27:55,437 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 19:27:55,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:27:55,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 19:27:55,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:27:55,438 INFO L87 Difference]: Start difference. First operand 26309 states and 110676 transitions. Second operand 3 states. [2019-12-18 19:27:55,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:27:55,882 INFO L93 Difference]: Finished difference Result 26309 states and 110675 transitions. [2019-12-18 19:27:55,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 19:27:55,882 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-12-18 19:27:55,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:27:55,977 INFO L225 Difference]: With dead ends: 26309 [2019-12-18 19:27:55,978 INFO L226 Difference]: Without dead ends: 26309 [2019-12-18 19:27:55,978 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 19:27:56,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26309 states. [2019-12-18 19:27:56,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26309 to 26309. [2019-12-18 19:27:56,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26309 states. [2019-12-18 19:27:58,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26309 states to 26309 states and 110675 transitions. [2019-12-18 19:27:58,551 INFO L78 Accepts]: Start accepts. Automaton has 26309 states and 110675 transitions. Word has length 5 [2019-12-18 19:27:58,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:27:58,551 INFO L462 AbstractCegarLoop]: Abstraction has 26309 states and 110675 transitions. [2019-12-18 19:27:58,551 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 19:27:58,551 INFO L276 IsEmpty]: Start isEmpty. Operand 26309 states and 110675 transitions. [2019-12-18 19:27:58,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 19:27:58,552 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:27:58,552 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:27:58,552 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:27:58,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:27:58,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1295838944, now seen corresponding path program 1 times [2019-12-18 19:27:58,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:27:58,553 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631875996] [2019-12-18 19:27:58,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:27:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:27:58,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 19:27:58,589 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631875996] [2019-12-18 19:27:58,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:27:58,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:27:58,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025409199] [2019-12-18 19:27:58,590 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 19:27:58,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:27:58,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 19:27:58,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:27:58,591 INFO L87 Difference]: Start difference. First operand 26309 states and 110675 transitions. Second operand 4 states. [2019-12-18 19:27:58,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:27:58,777 INFO L93 Difference]: Finished difference Result 24543 states and 99524 transitions. [2019-12-18 19:27:58,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 19:27:58,778 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-18 19:27:58,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:27:58,865 INFO L225 Difference]: With dead ends: 24543 [2019-12-18 19:27:58,866 INFO L226 Difference]: Without dead ends: 24543 [2019-12-18 19:27:58,866 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 19:27:59,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24543 states. [2019-12-18 19:27:59,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24543 to 23577. [2019-12-18 19:27:59,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23577 states. [2019-12-18 19:27:59,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23577 states to 23577 states and 96338 transitions. [2019-12-18 19:27:59,817 INFO L78 Accepts]: Start accepts. Automaton has 23577 states and 96338 transitions. Word has length 9 [2019-12-18 19:27:59,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:27:59,817 INFO L462 AbstractCegarLoop]: Abstraction has 23577 states and 96338 transitions. [2019-12-18 19:27:59,817 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 19:27:59,817 INFO L276 IsEmpty]: Start isEmpty. Operand 23577 states and 96338 transitions. [2019-12-18 19:27:59,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-18 19:27:59,818 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:27:59,818 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:27:59,818 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:27:59,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:27:59,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1647353871, now seen corresponding path program 1 times [2019-12-18 19:27:59,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:27:59,819 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231438258] [2019-12-18 19:27:59,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:27:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:27:59,846 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 19:27:59,846 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231438258] [2019-12-18 19:27:59,847 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344365392] [2019-12-18 19:27:59,847 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 19:27:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:27:59,907 INFO L264 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-18 19:27:59,908 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:27:59,936 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 19:27:59,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:27:59,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2019-12-18 19:27:59,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371793947] [2019-12-18 19:27:59,937 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-18 19:27:59,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:27:59,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-18 19:27:59,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-18 19:27:59,937 INFO L87 Difference]: Start difference. First operand 23577 states and 96338 transitions. Second operand 6 states. [2019-12-18 19:28:00,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:28:00,111 INFO L93 Difference]: Finished difference Result 23573 states and 96327 transitions. [2019-12-18 19:28:00,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 19:28:00,111 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-12-18 19:28:00,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:28:00,189 INFO L225 Difference]: With dead ends: 23573 [2019-12-18 19:28:00,189 INFO L226 Difference]: Without dead ends: 23573 [2019-12-18 19:28:00,190 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 19:28:00,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23573 states. [2019-12-18 19:28:01,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23573 to 23573. [2019-12-18 19:28:01,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23573 states. [2019-12-18 19:28:01,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23573 states to 23573 states and 96327 transitions. [2019-12-18 19:28:01,088 INFO L78 Accepts]: Start accepts. Automaton has 23573 states and 96327 transitions. Word has length 16 [2019-12-18 19:28:01,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:28:01,088 INFO L462 AbstractCegarLoop]: Abstraction has 23573 states and 96327 transitions. [2019-12-18 19:28:01,088 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-18 19:28:01,088 INFO L276 IsEmpty]: Start isEmpty. Operand 23573 states and 96327 transitions. [2019-12-18 19:28:01,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-18 19:28:01,091 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:28:01,091 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 19:28:01,301 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:28:01,301 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:28:01,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:28:01,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1700547162, now seen corresponding path program 1 times [2019-12-18 19:28:01,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:28:01,302 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227854922] [2019-12-18 19:28:01,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:28:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:28:01,343 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 19:28:01,344 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227854922] [2019-12-18 19:28:01,344 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115461295] [2019-12-18 19:28:01,344 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 19:28:01,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:28:01,407 INFO L264 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-18 19:28:01,408 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:28:01,441 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 19:28:01,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:28:01,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2019-12-18 19:28:01,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228621600] [2019-12-18 19:28:01,442 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-18 19:28:01,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:28:01,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-18 19:28:01,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-12-18 19:28:01,443 INFO L87 Difference]: Start difference. First operand 23573 states and 96327 transitions. Second operand 8 states. [2019-12-18 19:28:01,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:28:01,577 INFO L93 Difference]: Finished difference Result 23557 states and 96271 transitions. [2019-12-18 19:28:01,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 19:28:01,578 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2019-12-18 19:28:01,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:28:01,635 INFO L225 Difference]: With dead ends: 23557 [2019-12-18 19:28:01,635 INFO L226 Difference]: Without dead ends: 23557 [2019-12-18 19:28:01,635 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 19:28:01,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23557 states. [2019-12-18 19:28:02,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23557 to 23557. [2019-12-18 19:28:02,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23557 states. [2019-12-18 19:28:02,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23557 states to 23557 states and 96271 transitions. [2019-12-18 19:28:02,481 INFO L78 Accepts]: Start accepts. Automaton has 23557 states and 96271 transitions. Word has length 20 [2019-12-18 19:28:02,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:28:02,481 INFO L462 AbstractCegarLoop]: Abstraction has 23557 states and 96271 transitions. [2019-12-18 19:28:02,481 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-18 19:28:02,481 INFO L276 IsEmpty]: Start isEmpty. Operand 23557 states and 96271 transitions. [2019-12-18 19:28:02,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-18 19:28:02,486 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:28:02,486 INFO L411 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:28:02,686 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:28:02,687 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:28:02,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:28:02,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1187474448, now seen corresponding path program 1 times [2019-12-18 19:28:02,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:28:02,688 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263656834] [2019-12-18 19:28:02,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:28:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:28:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:28:02,721 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 19:28:02,722 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 19:28:02,722 WARN L364 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 19:28:02,722 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2019-12-18 19:28:02,735 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,735 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,735 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,735 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,735 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,736 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,736 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,736 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,736 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,736 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,736 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,736 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,737 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,737 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,737 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,737 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,737 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,737 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,737 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,738 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,738 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,738 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,738 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,738 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,738 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,738 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,739 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,739 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,739 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,739 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,739 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,739 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,739 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,740 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,740 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,740 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,740 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,740 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,740 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,740 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,740 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,741 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,741 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,741 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,741 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,741 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,742 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,743 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,743 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,743 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,744 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,744 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,745 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,745 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,745 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,745 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,746 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,747 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,747 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,747 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,747 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,747 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,749 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,749 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,750 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,750 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,750 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,752 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,752 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,752 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,752 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,753 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:28:02,758 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 19:28:02,758 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 19:28:02,758 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 19:28:02,758 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 19:28:02,758 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 19:28:02,759 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 19:28:02,759 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 19:28:02,759 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 19:28:02,759 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 19:28:02,760 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 101 transitions [2019-12-18 19:28:02,760 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 103 places, 101 transitions [2019-12-18 19:28:03,162 INFO L126 PetriNetUnfolder]: 398/2286 cut-off events. [2019-12-18 19:28:03,163 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:28:03,189 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 19:28:03,247 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 103 places, 101 transitions [2019-12-18 19:28:03,550 INFO L126 PetriNetUnfolder]: 398/2286 cut-off events. [2019-12-18 19:28:03,551 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:28:03,574 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 19:28:03,627 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3660 [2019-12-18 19:28:03,627 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 19:28:05,226 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-12-18 19:28:05,318 INFO L206 etLargeBlockEncoding]: Checked pairs total: 7553 [2019-12-18 19:28:05,318 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2019-12-18 19:28:05,319 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 43 transitions [2019-12-18 19:28:33,590 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 127122 states. [2019-12-18 19:28:33,590 INFO L276 IsEmpty]: Start isEmpty. Operand 127122 states. [2019-12-18 19:28:33,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-18 19:28:33,590 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:28:33,590 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-18 19:28:33,590 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:28:33,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:28:33,591 INFO L82 PathProgramCache]: Analyzing trace with hash 32083310, now seen corresponding path program 1 times [2019-12-18 19:28:33,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:28:33,591 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228599677] [2019-12-18 19:28:33,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:28:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:28:33,604 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 19:28:33,604 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228599677] [2019-12-18 19:28:33,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:28:33,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 19:28:33,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867043553] [2019-12-18 19:28:33,605 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 19:28:33,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:28:33,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 19:28:33,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:28:33,606 INFO L87 Difference]: Start difference. First operand 127122 states. Second operand 3 states. [2019-12-18 19:28:38,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:28:38,130 INFO L93 Difference]: Finished difference Result 158372 states and 759149 transitions. [2019-12-18 19:28:38,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 19:28:38,131 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-18 19:28:38,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:28:38,588 INFO L225 Difference]: With dead ends: 158372 [2019-12-18 19:28:38,589 INFO L226 Difference]: Without dead ends: 127121 [2019-12-18 19:28:38,589 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 19:28:41,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127121 states. [2019-12-18 19:28:43,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127121 to 127121. [2019-12-18 19:28:43,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127121 states. [2019-12-18 19:28:51,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127121 states to 127121 states and 615398 transitions. [2019-12-18 19:28:51,035 INFO L78 Accepts]: Start accepts. Automaton has 127121 states and 615398 transitions. Word has length 4 [2019-12-18 19:28:51,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:28:51,035 INFO L462 AbstractCegarLoop]: Abstraction has 127121 states and 615398 transitions. [2019-12-18 19:28:51,035 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 19:28:51,035 INFO L276 IsEmpty]: Start isEmpty. Operand 127121 states and 615398 transitions. [2019-12-18 19:28:51,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-18 19:28:51,035 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:28:51,036 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-18 19:28:51,036 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:28:51,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:28:51,036 INFO L82 PathProgramCache]: Analyzing trace with hash 994583493, now seen corresponding path program 1 times [2019-12-18 19:28:51,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:28:51,037 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867830829] [2019-12-18 19:28:51,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:28:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:28:51,071 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 19:28:51,071 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867830829] [2019-12-18 19:28:51,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:28:51,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 19:28:51,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049590001] [2019-12-18 19:28:51,072 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 19:28:51,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:28:51,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 19:28:51,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:28:51,073 INFO L87 Difference]: Start difference. First operand 127121 states and 615398 transitions. Second operand 3 states. [2019-12-18 19:28:51,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:28:51,848 INFO L93 Difference]: Finished difference Result 127121 states and 615397 transitions. [2019-12-18 19:28:51,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 19:28:51,849 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-12-18 19:28:51,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:28:52,242 INFO L225 Difference]: With dead ends: 127121 [2019-12-18 19:28:52,242 INFO L226 Difference]: Without dead ends: 127121 [2019-12-18 19:28:52,243 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 19:28:56,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127121 states. [2019-12-18 19:29:03,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127121 to 127121. [2019-12-18 19:29:03,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127121 states. [2019-12-18 19:29:04,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127121 states to 127121 states and 615397 transitions. [2019-12-18 19:29:04,380 INFO L78 Accepts]: Start accepts. Automaton has 127121 states and 615397 transitions. Word has length 5 [2019-12-18 19:29:04,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:29:04,380 INFO L462 AbstractCegarLoop]: Abstraction has 127121 states and 615397 transitions. [2019-12-18 19:29:04,380 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 19:29:04,380 INFO L276 IsEmpty]: Start isEmpty. Operand 127121 states and 615397 transitions. [2019-12-18 19:29:04,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 19:29:04,380 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:29:04,380 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:29:04,381 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:29:04,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:29:04,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1024609292, now seen corresponding path program 1 times [2019-12-18 19:29:04,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:29:04,381 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845749206] [2019-12-18 19:29:04,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:29:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:29:04,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 19:29:04,411 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845749206] [2019-12-18 19:29:04,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:29:04,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:29:04,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086158776] [2019-12-18 19:29:04,414 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 19:29:04,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:29:04,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 19:29:04,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:29:04,415 INFO L87 Difference]: Start difference. First operand 127121 states and 615397 transitions. Second operand 4 states. [2019-12-18 19:29:05,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:29:05,572 INFO L93 Difference]: Finished difference Result 120747 states and 568406 transitions. [2019-12-18 19:29:05,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 19:29:05,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-18 19:29:05,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:29:07,608 INFO L225 Difference]: With dead ends: 120747 [2019-12-18 19:29:07,609 INFO L226 Difference]: Without dead ends: 120747 [2019-12-18 19:29:07,609 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 19:29:09,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120747 states. [2019-12-18 19:29:17,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120747 to 116197. [2019-12-18 19:29:17,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116197 states. [2019-12-18 19:29:18,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116197 states to 116197 states and 549860 transitions. [2019-12-18 19:29:18,367 INFO L78 Accepts]: Start accepts. Automaton has 116197 states and 549860 transitions. Word has length 9 [2019-12-18 19:29:18,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:29:18,367 INFO L462 AbstractCegarLoop]: Abstraction has 116197 states and 549860 transitions. [2019-12-18 19:29:18,367 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 19:29:18,367 INFO L276 IsEmpty]: Start isEmpty. Operand 116197 states and 549860 transitions. [2019-12-18 19:29:18,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-18 19:29:18,368 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:29:18,368 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:29:18,368 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:29:18,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:29:18,369 INFO L82 PathProgramCache]: Analyzing trace with hash 579549320, now seen corresponding path program 1 times [2019-12-18 19:29:18,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:29:18,369 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623115226] [2019-12-18 19:29:18,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:29:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:29:18,401 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 19:29:18,401 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623115226] [2019-12-18 19:29:18,401 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045162334] [2019-12-18 19:29:18,401 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 19:29:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:29:18,467 INFO L264 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-18 19:29:18,467 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:29:18,486 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 19:29:18,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:29:18,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2019-12-18 19:29:18,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932803723] [2019-12-18 19:29:18,487 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-18 19:29:18,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:29:18,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-18 19:29:18,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-18 19:29:18,489 INFO L87 Difference]: Start difference. First operand 116197 states and 549860 transitions. Second operand 6 states. [2019-12-18 19:29:20,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:29:20,087 INFO L93 Difference]: Finished difference Result 116193 states and 549849 transitions. [2019-12-18 19:29:20,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 19:29:20,087 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-12-18 19:29:20,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:29:20,462 INFO L225 Difference]: With dead ends: 116193 [2019-12-18 19:29:20,462 INFO L226 Difference]: Without dead ends: 116193 [2019-12-18 19:29:20,463 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 19:29:28,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116193 states. [2019-12-18 19:29:29,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116193 to 116193. [2019-12-18 19:29:29,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116193 states. [2019-12-18 19:29:30,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116193 states to 116193 states and 549849 transitions. [2019-12-18 19:29:30,232 INFO L78 Accepts]: Start accepts. Automaton has 116193 states and 549849 transitions. Word has length 16 [2019-12-18 19:29:30,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:29:30,232 INFO L462 AbstractCegarLoop]: Abstraction has 116193 states and 549849 transitions. [2019-12-18 19:29:30,233 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-18 19:29:30,233 INFO L276 IsEmpty]: Start isEmpty. Operand 116193 states and 549849 transitions. [2019-12-18 19:29:30,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-18 19:29:30,234 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:29:30,235 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 19:29:31,303 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:29:31,303 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:29:31,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:29:31,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1298529040, now seen corresponding path program 1 times [2019-12-18 19:29:31,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:29:31,304 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662077008] [2019-12-18 19:29:31,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:29:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:29:31,338 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 19:29:31,339 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662077008] [2019-12-18 19:29:31,339 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62698555] [2019-12-18 19:29:31,339 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 19:29:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:29:31,410 INFO L264 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-18 19:29:31,411 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:29:31,443 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 19:29:31,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:29:31,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2019-12-18 19:29:31,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767259677] [2019-12-18 19:29:31,444 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-18 19:29:31,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:29:31,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-18 19:29:31,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-12-18 19:29:31,445 INFO L87 Difference]: Start difference. First operand 116193 states and 549849 transitions. Second operand 8 states. [2019-12-18 19:29:32,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:29:32,064 INFO L93 Difference]: Finished difference Result 116177 states and 549793 transitions. [2019-12-18 19:29:32,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 19:29:32,064 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2019-12-18 19:29:32,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:29:32,427 INFO L225 Difference]: With dead ends: 116177 [2019-12-18 19:29:32,427 INFO L226 Difference]: Without dead ends: 116177 [2019-12-18 19:29:32,427 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 19:29:40,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116177 states. [2019-12-18 19:29:41,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116177 to 116177. [2019-12-18 19:29:41,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116177 states. [2019-12-18 19:29:42,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116177 states to 116177 states and 549793 transitions. [2019-12-18 19:29:42,965 INFO L78 Accepts]: Start accepts. Automaton has 116177 states and 549793 transitions. Word has length 20 [2019-12-18 19:29:42,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:29:42,965 INFO L462 AbstractCegarLoop]: Abstraction has 116177 states and 549793 transitions. [2019-12-18 19:29:42,965 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-18 19:29:42,965 INFO L276 IsEmpty]: Start isEmpty. Operand 116177 states and 549793 transitions. [2019-12-18 19:29:42,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-18 19:29:42,971 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:29:42,972 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 19:29:43,174 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:29:43,177 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:29:43,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:29:43,177 INFO L82 PathProgramCache]: Analyzing trace with hash -982455207, now seen corresponding path program 1 times [2019-12-18 19:29:43,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:29:43,178 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163769987] [2019-12-18 19:29:43,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:29:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:29:43,236 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 19:29:43,236 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163769987] [2019-12-18 19:29:43,236 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301710549] [2019-12-18 19:29:43,236 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 19:29:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:29:43,303 INFO L264 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-18 19:29:43,306 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:29:43,348 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 19:29:43,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:29:43,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2019-12-18 19:29:43,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195943162] [2019-12-18 19:29:43,349 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-18 19:29:43,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:29:43,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-18 19:29:43,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2019-12-18 19:29:43,350 INFO L87 Difference]: Start difference. First operand 116177 states and 549793 transitions. Second operand 10 states. [2019-12-18 19:29:45,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:29:45,324 INFO L93 Difference]: Finished difference Result 116113 states and 549521 transitions. [2019-12-18 19:29:45,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-18 19:29:45,324 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2019-12-18 19:29:45,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:29:45,712 INFO L225 Difference]: With dead ends: 116113 [2019-12-18 19:29:45,712 INFO L226 Difference]: Without dead ends: 116113 [2019-12-18 19:29:45,713 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 19:29:47,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116113 states. [2019-12-18 19:29:55,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116113 to 116113. [2019-12-18 19:29:55,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116113 states. [2019-12-18 19:29:55,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116113 states to 116113 states and 549521 transitions. [2019-12-18 19:29:55,859 INFO L78 Accepts]: Start accepts. Automaton has 116113 states and 549521 transitions. Word has length 24 [2019-12-18 19:29:55,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:29:55,859 INFO L462 AbstractCegarLoop]: Abstraction has 116113 states and 549521 transitions. [2019-12-18 19:29:55,859 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-18 19:29:55,859 INFO L276 IsEmpty]: Start isEmpty. Operand 116113 states and 549521 transitions. [2019-12-18 19:29:55,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-18 19:29:55,874 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:29:55,874 INFO L411 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:29:56,075 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:29:56,075 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:29:56,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:29:56,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1095808649, now seen corresponding path program 1 times [2019-12-18 19:29:56,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:29:56,076 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055363307] [2019-12-18 19:29:56,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:29:56,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:29:56,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:29:56,107 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 19:29:56,107 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 19:29:56,107 WARN L364 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 19:29:56,107 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2019-12-18 19:29:56,116 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,116 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,117 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,117 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,117 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,117 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,117 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,117 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,117 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,118 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,118 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,118 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,118 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,118 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,118 WARN L315 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,118 WARN L315 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,119 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,119 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,119 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,119 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,119 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,119 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,119 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,120 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,120 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,120 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,120 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,120 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,120 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,120 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,121 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,121 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,121 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,121 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,121 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,123 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,123 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,123 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,123 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,123 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,123 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,123 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,124 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,124 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,124 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,124 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,124 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,124 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,124 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,125 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,125 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,125 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,125 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,125 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,127 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,127 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,127 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,127 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,127 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,128 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,128 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,129 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,129 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,129 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,135 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,135 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,136 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,136 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,136 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,137 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,137 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,138 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,138 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,138 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,139 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,139 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,139 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,140 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,140 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,141 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,141 WARN L315 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,141 WARN L315 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,141 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,142 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:29:56,147 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 19:29:56,148 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 19:29:56,148 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 19:29:56,148 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 19:29:56,148 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 19:29:56,148 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 19:29:56,148 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 19:29:56,149 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 19:29:56,149 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 19:29:56,150 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 108 transitions [2019-12-18 19:29:56,151 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 111 places, 108 transitions [2019-12-18 19:29:58,027 INFO L126 PetriNetUnfolder]: 848/4541 cut-off events. [2019-12-18 19:29:58,027 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:29:58,077 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 19:29:58,196 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 111 places, 108 transitions [2019-12-18 19:29:58,861 INFO L126 PetriNetUnfolder]: 848/4541 cut-off events. [2019-12-18 19:29:58,862 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:29:58,911 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 19:29:58,996 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 4550 [2019-12-18 19:29:58,996 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 19:30:00,696 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-12-18 19:30:00,773 INFO L206 etLargeBlockEncoding]: Checked pairs total: 11010 [2019-12-18 19:30:00,773 INFO L214 etLargeBlockEncoding]: Total number of compositions: 65 [2019-12-18 19:30:00,773 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 48 transitions Received shutdown request... [2019-12-18 19:31:12,720 WARN L527 AbstractCegarLoop]: Verification canceled [2019-12-18 19:31:12,723 WARN L227 ceAbstractionStarter]: Timeout [2019-12-18 19:31:12,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 07:31:12 BasicIcfg [2019-12-18 19:31:12,724 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 19:31:12,725 INFO L168 Benchmark]: Toolchain (without parser) took 216549.04 ms. Allocated memory was 137.9 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 100.1 MB in the beginning and 1.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. [2019-12-18 19:31:12,726 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 137.9 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-12-18 19:31:12,727 INFO L168 Benchmark]: CACSL2BoogieTranslator took 654.99 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 99.7 MB in the beginning and 162.3 MB in the end (delta: -62.6 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2019-12-18 19:31:12,727 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.04 ms. Allocated memory is still 202.9 MB. Free memory was 162.3 MB in the beginning and 160.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-12-18 19:31:12,728 INFO L168 Benchmark]: Boogie Preprocessor took 27.74 ms. Allocated memory is still 202.9 MB. Free memory was 160.0 MB in the beginning and 157.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-12-18 19:31:12,728 INFO L168 Benchmark]: RCFGBuilder took 429.57 ms. Allocated memory is still 202.9 MB. Free memory was 157.9 MB in the beginning and 136.3 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2019-12-18 19:31:12,728 INFO L168 Benchmark]: TraceAbstraction took 215374.08 ms. Allocated memory was 202.9 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 136.3 MB in the beginning and 1.7 GB in the end (delta: -1.5 GB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2019-12-18 19:31:12,741 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 137.9 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 654.99 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 99.7 MB in the beginning and 162.3 MB in the end (delta: -62.6 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.04 ms. Allocated memory is still 202.9 MB. Free memory was 162.3 MB in the beginning and 160.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.74 ms. Allocated memory is still 202.9 MB. Free memory was 160.0 MB in the beginning and 157.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 429.57 ms. Allocated memory is still 202.9 MB. Free memory was 157.9 MB in the beginning and 136.3 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215374.08 ms. Allocated memory was 202.9 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 136.3 MB in the beginning and 1.7 GB in the end (delta: -1.5 GB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 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: 1.4s, 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: 1.6s, 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: 1.5s, 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: 1.8s, 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: 0.4s, 0 MoverChecksTotal, 7553 CheckedPairsTotal, 62 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 4.6s, 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: 0.4s, 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 203409 states. Currently 32925 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 60 locations, 1 error locations. Result: TIMEOUT, OverallTime: 76.5s, 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