/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-ext/46_monabsex2_vs.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 18:58:49,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 18:58:49,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 18:58:49,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 18:58:49,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 18:58:49,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 18:58:49,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 18:58:49,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 18:58:49,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 18:58:49,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 18:58:49,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 18:58:49,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 18:58:49,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 18:58:49,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 18:58:49,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 18:58:49,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 18:58:49,623 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 18:58:49,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 18:58:49,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 18:58:49,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 18:58:49,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 18:58:49,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 18:58:49,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 18:58:49,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 18:58:49,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 18:58:49,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 18:58:49,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 18:58:49,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 18:58:49,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 18:58:49,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 18:58:49,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 18:58:49,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 18:58:49,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 18:58:49,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 18:58:49,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 18:58:49,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 18:58:49,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 18:58:49,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 18:58:49,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 18:58:49,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 18:58:49,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 18:58:49,663 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 [2020-04-17 18:58:49,687 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 18:58:49,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 18:58:49,689 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 18:58:49,689 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 18:58:49,689 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 18:58:49,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 18:58:49,690 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 18:58:49,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 18:58:49,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 18:58:49,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 18:58:49,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 18:58:49,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 18:58:49,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 18:58:49,693 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 18:58:49,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 18:58:49,693 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 18:58:49,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 18:58:49,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 18:58:49,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 18:58:49,694 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 18:58:49,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 18:58:49,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 18:58:49,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 18:58:49,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 18:58:49,695 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 18:58:49,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 18:58:49,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 18:58:49,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 18:58:49,695 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 18:58:49,979 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 18:58:50,001 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 18:58:50,006 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 18:58:50,007 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 18:58:50,007 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 18:58:50,008 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i [2020-04-17 18:58:50,088 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/899e3e4e7/c4fb8097e7c246b996a77b767135ee45/FLAGf848e61c9 [2020-04-17 18:58:50,681 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 18:58:50,682 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i [2020-04-17 18:58:50,697 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/899e3e4e7/c4fb8097e7c246b996a77b767135ee45/FLAGf848e61c9 [2020-04-17 18:58:50,895 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/899e3e4e7/c4fb8097e7c246b996a77b767135ee45 [2020-04-17 18:58:50,908 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 18:58:50,936 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 18:58:50,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 18:58:50,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 18:58:50,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 18:58:50,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 06:58:50" (1/1) ... [2020-04-17 18:58:50,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79c9e642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:58:50, skipping insertion in model container [2020-04-17 18:58:50,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 06:58:50" (1/1) ... [2020-04-17 18:58:50,956 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 18:58:51,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 18:58:51,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 18:58:51,490 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 18:58:51,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 18:58:51,627 INFO L208 MainTranslator]: Completed translation [2020-04-17 18:58:51,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:58:51 WrapperNode [2020-04-17 18:58:51,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 18:58:51,630 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 18:58:51,630 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 18:58:51,630 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 18:58:51,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:58:51" (1/1) ... [2020-04-17 18:58:51,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:58:51" (1/1) ... [2020-04-17 18:58:51,676 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 18:58:51,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 18:58:51,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 18:58:51,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 18:58:51,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:58:51" (1/1) ... [2020-04-17 18:58:51,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:58:51" (1/1) ... [2020-04-17 18:58:51,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:58:51" (1/1) ... [2020-04-17 18:58:51,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:58:51" (1/1) ... [2020-04-17 18:58:51,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:58:51" (1/1) ... [2020-04-17 18:58:51,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:58:51" (1/1) ... [2020-04-17 18:58:51,700 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:58:51" (1/1) ... [2020-04-17 18:58:51,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 18:58:51,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 18:58:51,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 18:58:51,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 18:58:51,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:58:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 18:58:51,769 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-04-17 18:58:51,769 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-04-17 18:58:51,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 18:58:51,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 18:58:51,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 18:58:51,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 18:58:51,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 18:58:51,775 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 18:58:52,102 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 18:58:52,102 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-04-17 18:58:52,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 06:58:52 BoogieIcfgContainer [2020-04-17 18:58:52,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 18:58:52,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 18:58:52,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 18:58:52,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 18:58:52,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 06:58:50" (1/3) ... [2020-04-17 18:58:52,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c30f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 06:58:52, skipping insertion in model container [2020-04-17 18:58:52,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:58:51" (2/3) ... [2020-04-17 18:58:52,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c30f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 06:58:52, skipping insertion in model container [2020-04-17 18:58:52,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 06:58:52" (3/3) ... [2020-04-17 18:58:52,114 INFO L109 eAbstractionObserver]: Analyzing ICFG 46_monabsex2_vs.i [2020-04-17 18:58:52,125 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 18:58:52,126 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 18:58:52,133 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 18:58:52,134 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 18:58:52,156 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:52,157 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:52,157 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:52,158 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:52,158 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:52,159 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:52,163 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:52,163 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:52,163 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:52,164 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:52,182 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-17 18:58:52,199 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 18:58:52,199 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 18:58:52,199 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 18:58:52,199 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 18:58:52,199 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 18:58:52,200 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 18:58:52,200 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 18:58:52,200 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 18:58:52,212 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 28 transitions, 61 flow [2020-04-17 18:58:52,214 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 29 places, 28 transitions, 61 flow [2020-04-17 18:58:52,243 INFO L129 PetriNetUnfolder]: 3/36 cut-off events. [2020-04-17 18:58:52,243 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 18:58:52,248 INFO L80 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 36 events. 3/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 18. Up to 4 conditions per place. [2020-04-17 18:58:52,250 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 29 places, 28 transitions, 61 flow [2020-04-17 18:58:52,262 INFO L129 PetriNetUnfolder]: 3/36 cut-off events. [2020-04-17 18:58:52,262 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 18:58:52,263 INFO L80 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 36 events. 3/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 18. Up to 4 conditions per place. [2020-04-17 18:58:52,264 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 180 [2020-04-17 18:58:52,265 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 18:58:52,843 INFO L206 etLargeBlockEncoding]: Checked pairs total: 114 [2020-04-17 18:58:52,844 INFO L214 etLargeBlockEncoding]: Total number of compositions: 22 [2020-04-17 18:58:52,848 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 11 places, 8 transitions, 21 flow [2020-04-17 18:58:52,857 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 19 states. [2020-04-17 18:58:52,859 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-04-17 18:58:52,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-17 18:58:52,864 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:52,865 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-04-17 18:58:52,866 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:58:52,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:52,873 INFO L82 PathProgramCache]: Analyzing trace with hash 4107967, now seen corresponding path program 1 times [2020-04-17 18:58:52,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:52,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339606412] [2020-04-17 18:58:52,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:53,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:58:53,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339606412] [2020-04-17 18:58:53,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:53,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 18:58:53,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86940214] [2020-04-17 18:58:53,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:58:53,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:53,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:58:53,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:58:53,114 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-04-17 18:58:53,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:53,135 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2020-04-17 18:58:53,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:53,137 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-04-17 18:58:53,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:53,148 INFO L225 Difference]: With dead ends: 11 [2020-04-17 18:58:53,148 INFO L226 Difference]: Without dead ends: 11 [2020-04-17 18:58:53,150 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:58:53,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-04-17 18:58:53,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-04-17 18:58:53,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-04-17 18:58:53,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-04-17 18:58:53,187 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 4 [2020-04-17 18:58:53,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:53,187 INFO L479 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-04-17 18:58:53,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:58:53,188 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-04-17 18:58:53,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-17 18:58:53,188 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:53,188 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-04-17 18:58:53,189 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:58:53,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:53,189 INFO L82 PathProgramCache]: Analyzing trace with hash -347254361, now seen corresponding path program 1 times [2020-04-17 18:58:53,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:53,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459559739] [2020-04-17 18:58:53,190 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 18:58:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 18:58:53,249 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-17 18:58:53,249 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-17 18:58:53,251 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-17 18:58:53,252 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-04-17 18:58:53,264 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:53,265 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:53,265 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:53,266 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:53,267 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:53,267 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:53,268 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:53,268 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:53,268 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:53,268 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:53,269 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:53,269 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:53,270 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:53,270 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:53,270 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:53,271 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:53,282 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:53,282 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:53,282 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:53,283 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:53,284 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 18:58:53,286 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 18:58:53,286 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 18:58:53,287 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 18:58:53,287 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 18:58:53,287 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 18:58:53,287 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 18:58:53,287 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 18:58:53,287 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 18:58:53,290 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 38 transitions, 88 flow [2020-04-17 18:58:53,291 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 40 places, 38 transitions, 88 flow [2020-04-17 18:58:53,320 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-04-17 18:58:53,320 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-04-17 18:58:53,323 INFO L80 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 55 events. 5/55 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 37. Up to 6 conditions per place. [2020-04-17 18:58:53,327 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 40 places, 38 transitions, 88 flow [2020-04-17 18:58:53,350 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-04-17 18:58:53,350 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-04-17 18:58:53,352 INFO L80 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 55 events. 5/55 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 37. Up to 6 conditions per place. [2020-04-17 18:58:53,353 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 540 [2020-04-17 18:58:53,353 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 18:58:53,992 INFO L206 etLargeBlockEncoding]: Checked pairs total: 798 [2020-04-17 18:58:53,993 INFO L214 etLargeBlockEncoding]: Total number of compositions: 29 [2020-04-17 18:58:53,993 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 44 flow [2020-04-17 18:58:54,001 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 149 states. [2020-04-17 18:58:54,002 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states. [2020-04-17 18:58:54,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-17 18:58:54,002 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:54,003 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-04-17 18:58:54,003 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:58:54,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:54,004 INFO L82 PathProgramCache]: Analyzing trace with hash 6531966, now seen corresponding path program 1 times [2020-04-17 18:58:54,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:54,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213512040] [2020-04-17 18:58:54,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:54,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:58:54,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213512040] [2020-04-17 18:58:54,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:54,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 18:58:54,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225826200] [2020-04-17 18:58:54,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:58:54,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:54,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:58:54,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:58:54,100 INFO L87 Difference]: Start difference. First operand 149 states. Second operand 3 states. [2020-04-17 18:58:54,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:54,134 INFO L93 Difference]: Finished difference Result 87 states and 182 transitions. [2020-04-17 18:58:54,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:54,135 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-04-17 18:58:54,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:54,137 INFO L225 Difference]: With dead ends: 87 [2020-04-17 18:58:54,137 INFO L226 Difference]: Without dead ends: 87 [2020-04-17 18:58:54,138 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:58:54,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-04-17 18:58:54,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-04-17 18:58:54,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-04-17 18:58:54,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 182 transitions. [2020-04-17 18:58:54,162 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 182 transitions. Word has length 4 [2020-04-17 18:58:54,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:54,163 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 182 transitions. [2020-04-17 18:58:54,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:58:54,165 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 182 transitions. [2020-04-17 18:58:54,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 18:58:54,166 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:54,167 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2020-04-17 18:58:54,167 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:58:54,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:54,168 INFO L82 PathProgramCache]: Analyzing trace with hash 83161709, now seen corresponding path program 1 times [2020-04-17 18:58:54,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:54,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072989976] [2020-04-17 18:58:54,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 18:58:54,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 18:58:54,248 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-17 18:58:54,248 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-17 18:58:54,249 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-17 18:58:54,252 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-04-17 18:58:54,259 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:54,259 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:54,259 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:54,260 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:54,260 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:54,260 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:54,261 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:54,261 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:54,261 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:54,261 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:54,262 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:54,262 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:54,262 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:54,263 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:54,263 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:54,263 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:54,263 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:54,263 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:54,264 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:54,264 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:54,264 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:54,265 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:54,267 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:54,268 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:54,268 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:54,268 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:54,270 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:54,271 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:54,271 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:54,271 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:54,273 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-17 18:58:54,274 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 18:58:54,274 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 18:58:54,274 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 18:58:54,274 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 18:58:54,274 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 18:58:54,275 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 18:58:54,275 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 18:58:54,275 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 18:58:54,277 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 48 transitions, 117 flow [2020-04-17 18:58:54,277 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 51 places, 48 transitions, 117 flow [2020-04-17 18:58:54,307 INFO L129 PetriNetUnfolder]: 7/74 cut-off events. [2020-04-17 18:58:54,307 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-04-17 18:58:54,308 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 74 events. 7/74 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 170 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 59. Up to 8 conditions per place. [2020-04-17 18:58:54,310 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 51 places, 48 transitions, 117 flow [2020-04-17 18:58:54,321 INFO L129 PetriNetUnfolder]: 7/74 cut-off events. [2020-04-17 18:58:54,322 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-04-17 18:58:54,322 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 74 events. 7/74 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 170 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 59. Up to 8 conditions per place. [2020-04-17 18:58:54,324 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1080 [2020-04-17 18:58:54,324 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 18:58:55,086 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2235 [2020-04-17 18:58:55,086 INFO L214 etLargeBlockEncoding]: Total number of compositions: 41 [2020-04-17 18:58:55,086 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 23 transitions, 67 flow [2020-04-17 18:58:55,129 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 749 states. [2020-04-17 18:58:55,130 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states. [2020-04-17 18:58:55,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-17 18:58:55,130 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:55,131 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-04-17 18:58:55,131 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:58:55,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:55,131 INFO L82 PathProgramCache]: Analyzing trace with hash 9457192, now seen corresponding path program 1 times [2020-04-17 18:58:55,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:55,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149142921] [2020-04-17 18:58:55,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:55,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:58:55,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149142921] [2020-04-17 18:58:55,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:55,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 18:58:55,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019494138] [2020-04-17 18:58:55,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:58:55,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:55,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:58:55,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:58:55,215 INFO L87 Difference]: Start difference. First operand 749 states. Second operand 3 states. [2020-04-17 18:58:55,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:55,289 INFO L93 Difference]: Finished difference Result 421 states and 1176 transitions. [2020-04-17 18:58:55,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:55,290 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-04-17 18:58:55,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:55,299 INFO L225 Difference]: With dead ends: 421 [2020-04-17 18:58:55,300 INFO L226 Difference]: Without dead ends: 421 [2020-04-17 18:58:55,300 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:58:55,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-04-17 18:58:55,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2020-04-17 18:58:55,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-04-17 18:58:55,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 1176 transitions. [2020-04-17 18:58:55,358 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 1176 transitions. Word has length 4 [2020-04-17 18:58:55,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:55,358 INFO L479 AbstractCegarLoop]: Abstraction has 421 states and 1176 transitions. [2020-04-17 18:58:55,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:58:55,359 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 1176 transitions. [2020-04-17 18:58:55,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 18:58:55,360 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:55,360 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:55,360 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:58:55,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:55,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1631208808, now seen corresponding path program 1 times [2020-04-17 18:58:55,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:55,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103858512] [2020-04-17 18:58:55,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:55,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:58:55,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103858512] [2020-04-17 18:58:55,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:55,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:58:55,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823795303] [2020-04-17 18:58:55,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:58:55,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:55,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:58:55,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:58:55,395 INFO L87 Difference]: Start difference. First operand 421 states and 1176 transitions. Second operand 3 states. [2020-04-17 18:58:55,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:55,425 INFO L93 Difference]: Finished difference Result 319 states and 912 transitions. [2020-04-17 18:58:55,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:55,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-17 18:58:55,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:55,434 INFO L225 Difference]: With dead ends: 319 [2020-04-17 18:58:55,435 INFO L226 Difference]: Without dead ends: 319 [2020-04-17 18:58:55,435 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:58:55,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-04-17 18:58:55,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2020-04-17 18:58:55,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-04-17 18:58:55,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 912 transitions. [2020-04-17 18:58:55,470 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 912 transitions. Word has length 10 [2020-04-17 18:58:55,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:55,471 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 912 transitions. [2020-04-17 18:58:55,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:58:55,471 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 912 transitions. [2020-04-17 18:58:55,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 18:58:55,472 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:55,473 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2020-04-17 18:58:55,473 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:58:55,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:55,473 INFO L82 PathProgramCache]: Analyzing trace with hash -274399323, now seen corresponding path program 1 times [2020-04-17 18:58:55,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:55,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420407827] [2020-04-17 18:58:55,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 18:58:55,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 18:58:55,498 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-17 18:58:55,498 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-17 18:58:55,499 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-17 18:58:55,499 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-04-17 18:58:55,505 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,505 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,506 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,506 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,506 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,506 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,507 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,507 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,507 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,507 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,507 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,507 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,508 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,508 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,508 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,508 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,509 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,509 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,509 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,509 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,509 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,509 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,510 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,510 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,512 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,512 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,512 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,512 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,524 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,524 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,524 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,524 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,526 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,526 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,526 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,526 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,528 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,528 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,529 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,529 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:55,530 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-04-17 18:58:55,531 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 18:58:55,531 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 18:58:55,531 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 18:58:55,531 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 18:58:55,531 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 18:58:55,531 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 18:58:55,531 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 18:58:55,531 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 18:58:55,533 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 58 transitions, 148 flow [2020-04-17 18:58:55,533 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 58 transitions, 148 flow [2020-04-17 18:58:55,546 INFO L129 PetriNetUnfolder]: 9/93 cut-off events. [2020-04-17 18:58:55,546 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-04-17 18:58:55,547 INFO L80 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 93 events. 9/93 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 209 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 83. Up to 10 conditions per place. [2020-04-17 18:58:55,550 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 58 transitions, 148 flow [2020-04-17 18:58:55,561 INFO L129 PetriNetUnfolder]: 9/93 cut-off events. [2020-04-17 18:58:55,561 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-04-17 18:58:55,563 INFO L80 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 93 events. 9/93 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 209 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 83. Up to 10 conditions per place. [2020-04-17 18:58:55,565 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1800 [2020-04-17 18:58:55,566 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 18:58:56,641 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3236 [2020-04-17 18:58:56,641 INFO L214 etLargeBlockEncoding]: Total number of compositions: 47 [2020-04-17 18:58:56,641 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 28 transitions, 88 flow [2020-04-17 18:58:56,884 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 3749 states. [2020-04-17 18:58:56,885 INFO L276 IsEmpty]: Start isEmpty. Operand 3749 states. [2020-04-17 18:58:56,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-17 18:58:56,885 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:56,885 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-04-17 18:58:56,885 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:58:56,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:56,886 INFO L82 PathProgramCache]: Analyzing trace with hash 13119213, now seen corresponding path program 1 times [2020-04-17 18:58:56,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:56,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708534893] [2020-04-17 18:58:56,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:56,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:58:56,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708534893] [2020-04-17 18:58:56,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:56,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 18:58:56,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744597387] [2020-04-17 18:58:56,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:58:56,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:56,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:58:56,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:58:56,909 INFO L87 Difference]: Start difference. First operand 3749 states. Second operand 3 states. [2020-04-17 18:58:56,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:56,982 INFO L93 Difference]: Finished difference Result 2133 states and 7537 transitions. [2020-04-17 18:58:56,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:56,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-04-17 18:58:56,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:57,054 INFO L225 Difference]: With dead ends: 2133 [2020-04-17 18:58:57,054 INFO L226 Difference]: Without dead ends: 2133 [2020-04-17 18:58:57,055 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:58:57,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2133 states. [2020-04-17 18:58:57,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2133 to 2133. [2020-04-17 18:58:57,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2133 states. [2020-04-17 18:58:57,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2133 states to 2133 states and 7537 transitions. [2020-04-17 18:58:57,179 INFO L78 Accepts]: Start accepts. Automaton has 2133 states and 7537 transitions. Word has length 4 [2020-04-17 18:58:57,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:57,179 INFO L479 AbstractCegarLoop]: Abstraction has 2133 states and 7537 transitions. [2020-04-17 18:58:57,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:58:57,179 INFO L276 IsEmpty]: Start isEmpty. Operand 2133 states and 7537 transitions. [2020-04-17 18:58:57,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 18:58:57,180 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:57,180 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:57,181 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:58:57,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:57,181 INFO L82 PathProgramCache]: Analyzing trace with hash 660270625, now seen corresponding path program 1 times [2020-04-17 18:58:57,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:57,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163494414] [2020-04-17 18:58:57,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:57,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-17 18:58:57,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163494414] [2020-04-17 18:58:57,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:57,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:58:57,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739100748] [2020-04-17 18:58:57,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:58:57,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:57,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:58:57,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:58:57,207 INFO L87 Difference]: Start difference. First operand 2133 states and 7537 transitions. Second operand 3 states. [2020-04-17 18:58:57,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:57,243 INFO L93 Difference]: Finished difference Result 1279 states and 4608 transitions. [2020-04-17 18:58:57,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:57,244 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-17 18:58:57,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:57,255 INFO L225 Difference]: With dead ends: 1279 [2020-04-17 18:58:57,255 INFO L226 Difference]: Without dead ends: 1279 [2020-04-17 18:58:57,255 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:58:57,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2020-04-17 18:58:57,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1279. [2020-04-17 18:58:57,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2020-04-17 18:58:57,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 4608 transitions. [2020-04-17 18:58:57,306 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 4608 transitions. Word has length 10 [2020-04-17 18:58:57,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:57,306 INFO L479 AbstractCegarLoop]: Abstraction has 1279 states and 4608 transitions. [2020-04-17 18:58:57,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:58:57,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 4608 transitions. [2020-04-17 18:58:57,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 18:58:57,309 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:57,309 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:57,310 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:58:57,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:57,310 INFO L82 PathProgramCache]: Analyzing trace with hash -888053295, now seen corresponding path program 1 times [2020-04-17 18:58:57,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:57,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255336438] [2020-04-17 18:58:57,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 18:58:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 18:58:57,333 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-17 18:58:57,333 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-17 18:58:57,334 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-17 18:58:57,334 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-04-17 18:58:57,341 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,341 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,342 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,342 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,342 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,342 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,342 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,343 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,343 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,343 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,343 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,343 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,343 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,344 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,344 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,344 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,344 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,344 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,345 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,345 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,345 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,345 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,345 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,346 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,346 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,346 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,346 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,346 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,346 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,347 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,347 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,347 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,347 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,347 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,349 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,350 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,350 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,350 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,351 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,351 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,352 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,352 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,353 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,353 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,353 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,354 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,355 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,355 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,355 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,355 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:57,357 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-04-17 18:58:57,357 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 18:58:57,357 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 18:58:57,357 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 18:58:57,357 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 18:58:57,357 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 18:58:57,358 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 18:58:57,358 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 18:58:57,358 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 18:58:57,359 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 68 transitions, 181 flow [2020-04-17 18:58:57,359 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 181 flow [2020-04-17 18:58:57,372 INFO L129 PetriNetUnfolder]: 11/112 cut-off events. [2020-04-17 18:58:57,372 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-04-17 18:58:57,373 INFO L80 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 112 events. 11/112 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 265 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 109. Up to 12 conditions per place. [2020-04-17 18:58:57,377 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 181 flow [2020-04-17 18:58:57,388 INFO L129 PetriNetUnfolder]: 11/112 cut-off events. [2020-04-17 18:58:57,389 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-04-17 18:58:57,390 INFO L80 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 112 events. 11/112 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 265 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 109. Up to 12 conditions per place. [2020-04-17 18:58:57,393 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2700 [2020-04-17 18:58:57,393 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 18:58:58,954 INFO L206 etLargeBlockEncoding]: Checked pairs total: 5883 [2020-04-17 18:58:58,954 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-04-17 18:58:58,955 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 35 transitions, 115 flow [2020-04-17 18:59:01,287 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18749 states. [2020-04-17 18:59:01,287 INFO L276 IsEmpty]: Start isEmpty. Operand 18749 states. [2020-04-17 18:59:01,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-17 18:59:01,288 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:59:01,288 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-04-17 18:59:01,288 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:59:01,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:59:01,288 INFO L82 PathProgramCache]: Analyzing trace with hash 17094107, now seen corresponding path program 1 times [2020-04-17 18:59:01,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:59:01,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735822704] [2020-04-17 18:59:01,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:59:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:59:01,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:59:01,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735822704] [2020-04-17 18:59:01,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:59:01,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 18:59:01,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218925378] [2020-04-17 18:59:01,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:59:01,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:59:01,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:59:01,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:59:01,325 INFO L87 Difference]: Start difference. First operand 18749 states. Second operand 3 states. [2020-04-17 18:59:01,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:59:01,559 INFO L93 Difference]: Finished difference Result 11059 states and 47649 transitions. [2020-04-17 18:59:01,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:59:01,559 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-04-17 18:59:01,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:59:01,708 INFO L225 Difference]: With dead ends: 11059 [2020-04-17 18:59:01,708 INFO L226 Difference]: Without dead ends: 11059 [2020-04-17 18:59:01,709 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:59:02,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11059 states. [2020-04-17 18:59:03,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11059 to 11059. [2020-04-17 18:59:03,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11059 states. [2020-04-17 18:59:03,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11059 states to 11059 states and 47649 transitions. [2020-04-17 18:59:03,281 INFO L78 Accepts]: Start accepts. Automaton has 11059 states and 47649 transitions. Word has length 4 [2020-04-17 18:59:03,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:59:03,281 INFO L479 AbstractCegarLoop]: Abstraction has 11059 states and 47649 transitions. [2020-04-17 18:59:03,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:59:03,282 INFO L276 IsEmpty]: Start isEmpty. Operand 11059 states and 47649 transitions. [2020-04-17 18:59:03,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 18:59:03,285 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:59:03,285 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:59:03,285 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:59:03,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:59:03,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1998237469, now seen corresponding path program 1 times [2020-04-17 18:59:03,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:59:03,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393887143] [2020-04-17 18:59:03,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:59:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:59:03,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-17 18:59:03,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393887143] [2020-04-17 18:59:03,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:59:03,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:59:03,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212491241] [2020-04-17 18:59:03,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:59:03,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:59:03,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:59:03,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:59:03,327 INFO L87 Difference]: Start difference. First operand 11059 states and 47649 transitions. Second operand 3 states. [2020-04-17 18:59:03,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:59:03,433 INFO L93 Difference]: Finished difference Result 5119 states and 22272 transitions. [2020-04-17 18:59:03,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:59:03,434 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-17 18:59:03,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:59:03,460 INFO L225 Difference]: With dead ends: 5119 [2020-04-17 18:59:03,460 INFO L226 Difference]: Without dead ends: 5119 [2020-04-17 18:59:03,461 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:59:03,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5119 states. [2020-04-17 18:59:03,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5119 to 5119. [2020-04-17 18:59:03,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5119 states. [2020-04-17 18:59:03,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5119 states to 5119 states and 22272 transitions. [2020-04-17 18:59:03,706 INFO L78 Accepts]: Start accepts. Automaton has 5119 states and 22272 transitions. Word has length 10 [2020-04-17 18:59:03,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:59:03,706 INFO L479 AbstractCegarLoop]: Abstraction has 5119 states and 22272 transitions. [2020-04-17 18:59:03,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:59:03,706 INFO L276 IsEmpty]: Start isEmpty. Operand 5119 states and 22272 transitions. [2020-04-17 18:59:03,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 18:59:03,709 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:59:03,710 INFO L425 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:59:03,710 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:59:03,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:59:03,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1270266075, now seen corresponding path program 1 times [2020-04-17 18:59:03,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:59:03,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715217222] [2020-04-17 18:59:03,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:59:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 18:59:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 18:59:03,752 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-17 18:59:03,753 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-17 18:59:03,753 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-17 18:59:03,754 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-04-17 18:59:03,764 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,764 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,764 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,764 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,765 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,765 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,765 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,765 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,765 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,765 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,766 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,766 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,766 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,766 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,766 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,766 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,767 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,767 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,768 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,768 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,768 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,768 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,769 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,769 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,769 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,769 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,769 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,769 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,770 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,770 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,770 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,770 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,770 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,770 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,771 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,771 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,771 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,771 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,771 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,772 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,774 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,774 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,774 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,774 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,776 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,776 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,777 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,777 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,778 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,778 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,778 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,779 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,780 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,780 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,780 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,780 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,782 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,782 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,782 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,782 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:03,783 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-04-17 18:59:03,784 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 18:59:03,784 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 18:59:03,784 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 18:59:03,784 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 18:59:03,784 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 18:59:03,784 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 18:59:03,784 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 18:59:03,784 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 18:59:03,786 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 78 transitions, 216 flow [2020-04-17 18:59:03,786 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 78 transitions, 216 flow [2020-04-17 18:59:03,805 INFO L129 PetriNetUnfolder]: 13/131 cut-off events. [2020-04-17 18:59:03,805 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-04-17 18:59:03,806 INFO L80 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 131 events. 13/131 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 328 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 136. Up to 14 conditions per place. [2020-04-17 18:59:03,811 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 78 transitions, 216 flow [2020-04-17 18:59:03,824 INFO L129 PetriNetUnfolder]: 13/131 cut-off events. [2020-04-17 18:59:03,824 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-04-17 18:59:03,825 INFO L80 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 131 events. 13/131 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 328 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 136. Up to 14 conditions per place. [2020-04-17 18:59:03,830 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3780 [2020-04-17 18:59:03,830 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 18:59:04,281 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-04-17 18:59:05,448 INFO L206 etLargeBlockEncoding]: Checked pairs total: 6919 [2020-04-17 18:59:05,448 INFO L214 etLargeBlockEncoding]: Total number of compositions: 63 [2020-04-17 18:59:05,449 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 39 transitions, 138 flow [2020-04-17 18:59:41,101 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 93749 states. [2020-04-17 18:59:41,101 INFO L276 IsEmpty]: Start isEmpty. Operand 93749 states. [2020-04-17 18:59:41,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-17 18:59:41,101 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:59:41,101 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-04-17 18:59:41,102 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:59:41,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:59:41,102 INFO L82 PathProgramCache]: Analyzing trace with hash 22149830, now seen corresponding path program 1 times [2020-04-17 18:59:41,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:59:41,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908300022] [2020-04-17 18:59:41,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:59:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:59:41,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:59:41,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908300022] [2020-04-17 18:59:41,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:59:41,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 18:59:41,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814130649] [2020-04-17 18:59:41,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:59:41,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:59:41,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:59:41,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:59:41,145 INFO L87 Difference]: Start difference. First operand 93749 states. Second operand 3 states. [2020-04-17 18:59:41,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:59:41,581 INFO L93 Difference]: Finished difference Result 57747 states and 295020 transitions. [2020-04-17 18:59:41,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:59:41,582 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-04-17 18:59:41,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:59:41,954 INFO L225 Difference]: With dead ends: 57747 [2020-04-17 18:59:41,955 INFO L226 Difference]: Without dead ends: 57747 [2020-04-17 18:59:41,955 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:59:49,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57747 states. [2020-04-17 18:59:50,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57747 to 57747. [2020-04-17 18:59:50,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57747 states. [2020-04-17 18:59:53,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57747 states to 57747 states and 295020 transitions. [2020-04-17 18:59:53,776 INFO L78 Accepts]: Start accepts. Automaton has 57747 states and 295020 transitions. Word has length 4 [2020-04-17 18:59:53,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:59:53,776 INFO L479 AbstractCegarLoop]: Abstraction has 57747 states and 295020 transitions. [2020-04-17 18:59:53,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:59:53,776 INFO L276 IsEmpty]: Start isEmpty. Operand 57747 states and 295020 transitions. [2020-04-17 18:59:53,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 18:59:53,776 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:59:53,776 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:59:53,777 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:59:53,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:59:53,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1106760830, now seen corresponding path program 1 times [2020-04-17 18:59:53,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:59:53,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884282259] [2020-04-17 18:59:53,777 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:59:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:59:53,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:59:53,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884282259] [2020-04-17 18:59:53,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:59:53,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:59:53,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981424802] [2020-04-17 18:59:53,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:59:53,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:59:53,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:59:53,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:59:53,815 INFO L87 Difference]: Start difference. First operand 57747 states and 295020 transitions. Second operand 3 states. [2020-04-17 18:59:53,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:59:53,987 INFO L93 Difference]: Finished difference Result 20479 states and 104448 transitions. [2020-04-17 18:59:53,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:59:53,987 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-17 18:59:53,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:59:54,091 INFO L225 Difference]: With dead ends: 20479 [2020-04-17 18:59:54,091 INFO L226 Difference]: Without dead ends: 20479 [2020-04-17 18:59:54,092 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:59:54,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20479 states. [2020-04-17 18:59:55,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20479 to 20479. [2020-04-17 18:59:55,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20479 states. [2020-04-17 18:59:55,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20479 states to 20479 states and 104448 transitions. [2020-04-17 18:59:55,141 INFO L78 Accepts]: Start accepts. Automaton has 20479 states and 104448 transitions. Word has length 10 [2020-04-17 18:59:55,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:59:55,141 INFO L479 AbstractCegarLoop]: Abstraction has 20479 states and 104448 transitions. [2020-04-17 18:59:55,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:59:55,142 INFO L276 IsEmpty]: Start isEmpty. Operand 20479 states and 104448 transitions. [2020-04-17 18:59:55,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-17 18:59:55,149 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:59:55,150 INFO L425 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:59:55,150 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:59:55,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:59:55,150 INFO L82 PathProgramCache]: Analyzing trace with hash -2077234539, now seen corresponding path program 1 times [2020-04-17 18:59:55,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:59:55,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571106718] [2020-04-17 18:59:55,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:59:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 18:59:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 18:59:55,171 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-17 18:59:55,171 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-17 18:59:55,172 WARN L363 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-17 18:59:55,172 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-04-17 18:59:55,180 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,180 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,181 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,181 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,181 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,181 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,181 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,181 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,182 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,182 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,182 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,182 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,182 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,182 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,183 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,183 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,183 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,183 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,183 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,183 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,184 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,184 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,184 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,184 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,184 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,184 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,184 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,185 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,185 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,185 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,185 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,185 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,185 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,186 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,186 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,186 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,186 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,186 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,186 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,186 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,187 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,187 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,187 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,187 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,187 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,188 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,194 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,194 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,194 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,195 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,196 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,196 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,196 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,196 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,198 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,198 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,198 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,198 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,199 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,199 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,199 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,200 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,201 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,201 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,201 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,201 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,202 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,202 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,203 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,203 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:59:55,204 INFO L251 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-04-17 18:59:55,204 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 18:59:55,204 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 18:59:55,204 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 18:59:55,204 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 18:59:55,205 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 18:59:55,205 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 18:59:55,205 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 18:59:55,205 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 18:59:55,206 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 88 transitions, 253 flow [2020-04-17 18:59:55,206 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 95 places, 88 transitions, 253 flow [2020-04-17 18:59:55,222 INFO L129 PetriNetUnfolder]: 15/150 cut-off events. [2020-04-17 18:59:55,222 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2020-04-17 18:59:55,223 INFO L80 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 150 events. 15/150 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 367 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 164. Up to 16 conditions per place. [2020-04-17 18:59:55,230 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 95 places, 88 transitions, 253 flow [2020-04-17 18:59:55,245 INFO L129 PetriNetUnfolder]: 15/150 cut-off events. [2020-04-17 18:59:55,245 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2020-04-17 18:59:55,246 INFO L80 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 150 events. 15/150 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 367 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 164. Up to 16 conditions per place. [2020-04-17 18:59:55,253 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 5040 [2020-04-17 18:59:55,253 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 18:59:56,821 INFO L206 etLargeBlockEncoding]: Checked pairs total: 8752 [2020-04-17 18:59:56,821 INFO L214 etLargeBlockEncoding]: Total number of compositions: 68 [2020-04-17 18:59:56,822 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 43 transitions, 163 flow Received shutdown request... [2020-04-17 19:03:09,051 WARN L544 AbstractCegarLoop]: Verification canceled [2020-04-17 19:03:09,054 WARN L228 ceAbstractionStarter]: Timeout [2020-04-17 19:03:09,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 07:03:09 BasicIcfg [2020-04-17 19:03:09,055 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 19:03:09,057 INFO L168 Benchmark]: Toolchain (without parser) took 258147.41 ms. Allocated memory was 146.3 MB in the beginning and 2.7 GB in the end (delta: 2.6 GB). Free memory was 101.4 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2020-04-17 19:03:09,065 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 121.4 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-17 19:03:09,070 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.57 ms. Allocated memory was 146.3 MB in the beginning and 205.0 MB in the end (delta: 58.7 MB). Free memory was 99.4 MB in the beginning and 165.1 MB in the end (delta: -65.7 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-04-17 19:03:09,071 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.01 ms. Allocated memory is still 205.0 MB. Free memory was 165.1 MB in the beginning and 163.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 19:03:09,072 INFO L168 Benchmark]: Boogie Preprocessor took 26.12 ms. Allocated memory is still 205.0 MB. Free memory was 163.1 MB in the beginning and 161.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-17 19:03:09,072 INFO L168 Benchmark]: RCFGBuilder took 402.82 ms. Allocated memory is still 205.0 MB. Free memory was 161.8 MB in the beginning and 146.5 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2020-04-17 19:03:09,077 INFO L168 Benchmark]: TraceAbstraction took 256948.05 ms. Allocated memory was 205.0 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 145.9 MB in the beginning and 1.1 GB in the end (delta: -977.8 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2020-04-17 19:03:09,081 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 121.4 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 692.57 ms. Allocated memory was 146.3 MB in the beginning and 205.0 MB in the end (delta: 58.7 MB). Free memory was 99.4 MB in the beginning and 165.1 MB in the end (delta: -65.7 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.01 ms. Allocated memory is still 205.0 MB. Free memory was 165.1 MB in the beginning and 163.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.12 ms. Allocated memory is still 205.0 MB. Free memory was 163.1 MB in the beginning and 161.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 402.82 ms. Allocated memory is still 205.0 MB. Free memory was 161.8 MB in the beginning and 146.5 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 256948.05 ms. Allocated memory was 205.0 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 145.9 MB in the beginning and 1.1 GB in the end (delta: -977.8 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.6s, 29 ProgramPointsBefore, 11 ProgramPointsAfterwards, 28 TransitionsBefore, 8 TransitionsAfterwards, 180 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 83 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 114 CheckedPairsTotal, 22 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.7s, 40 ProgramPointsBefore, 20 ProgramPointsAfterwards, 38 TransitionsBefore, 16 TransitionsAfterwards, 540 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 303 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 16 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 798 CheckedPairsTotal, 29 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.8s, 51 ProgramPointsBefore, 27 ProgramPointsAfterwards, 48 TransitionsBefore, 23 TransitionsAfterwards, 1080 CoEnabledTransitionPairs, 6 FixpointIterations, 7 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 585 VarBasedMoverChecksPositive, 78 VarBasedMoverChecksNegative, 54 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2235 CheckedPairsTotal, 41 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.1s, 62 ProgramPointsBefore, 34 ProgramPointsAfterwards, 58 TransitionsBefore, 28 TransitionsAfterwards, 1800 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 2 ChoiceCompositions, 949 VarBasedMoverChecksPositive, 166 VarBasedMoverChecksNegative, 165 SemBasedMoverChecksPositive, 40 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 0 MoverChecksTotal, 3236 CheckedPairsTotal, 47 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 73 ProgramPointsBefore, 41 ProgramPointsAfterwards, 68 TransitionsBefore, 35 TransitionsAfterwards, 2700 CoEnabledTransitionPairs, 6 FixpointIterations, 7 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 1 ChoiceCompositions, 1458 VarBasedMoverChecksPositive, 368 VarBasedMoverChecksNegative, 402 SemBasedMoverChecksPositive, 49 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.8s, 0 MoverChecksTotal, 5883 CheckedPairsTotal, 59 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 84 ProgramPointsBefore, 48 ProgramPointsAfterwards, 78 TransitionsBefore, 39 TransitionsAfterwards, 3780 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 3 ChoiceCompositions, 1899 VarBasedMoverChecksPositive, 353 VarBasedMoverChecksNegative, 320 SemBasedMoverChecksPositive, 70 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.7s, 0 MoverChecksTotal, 6919 CheckedPairsTotal, 63 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 95 ProgramPointsBefore, 55 ProgramPointsAfterwards, 88 TransitionsBefore, 43 TransitionsAfterwards, 5040 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 5 ChoiceCompositions, 2400 VarBasedMoverChecksPositive, 345 VarBasedMoverChecksNegative, 306 SemBasedMoverChecksPositive, 70 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.7s, 0 MoverChecksTotal, 8752 CheckedPairsTotal, 68 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 677]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 677). Cancelled while BasicCegarLoop was constructing initial abstraction,while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 55 places, 43 transitions, 163 flow. Already constructed 261863 states. Currently 63789 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. Started 7 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 256.6s, OverallIterations: 16, TraceHistogramMax: 7, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 238.6s, HoareTripleCheckerStatistics: 237 SDtfs, 118 SDslu, 83 SDs, 0 SdLazy, 122 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93749occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 14.9s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 145 NumberOfCodeBlocks, 145 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1080 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 8/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown