/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-array-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 23:24:10,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 23:24:10,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 23:24:10,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 23:24:10,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 23:24:10,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 23:24:10,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 23:24:10,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 23:24:10,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 23:24:10,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 23:24:10,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 23:24:10,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 23:24:10,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 23:24:10,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 23:24:10,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 23:24:10,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 23:24:10,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 23:24:10,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 23:24:10,631 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 23:24:10,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 23:24:10,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 23:24:10,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 23:24:10,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 23:24:10,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 23:24:10,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-18 23:24:10,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 23:24:10,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 23:24:10,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 23:24:10,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 23:24:10,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 23:24:10,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 23:24:10,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 23:24:10,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 23:24:10,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 23:24:10,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 23:24:10,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 23:24:10,650 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2019-12-18 23:24:10,669 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 23:24:10,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 23:24:10,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 23:24:10,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 23:24:10,671 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 23:24:10,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 23:24:10,671 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 23:24:10,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 23:24:10,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 23:24:10,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 23:24:10,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 23:24:10,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 23:24:10,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 23:24:10,672 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 23:24:10,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 23:24:10,673 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 23:24:10,673 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 23:24:10,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 23:24:10,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 23:24:10,674 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 23:24:10,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 23:24:10,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 23:24:10,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 23:24:10,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 23:24:10,675 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 23:24:10,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 23:24:10,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 23:24:10,675 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-18 23:24:10,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 23:24:10,676 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 23:24:10,955 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 23:24:10,969 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 23:24:10,972 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 23:24:10,973 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 23:24:10,974 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 23:24:10,975 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-array-1.i [2019-12-18 23:24:11,033 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff3a9c966/42a45ce941d64ac59c4ef2f620223f49/FLAGad8d27063 [2019-12-18 23:24:11,560 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 23:24:11,561 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-array-1.i [2019-12-18 23:24:11,573 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff3a9c966/42a45ce941d64ac59c4ef2f620223f49/FLAGad8d27063 [2019-12-18 23:24:11,851 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff3a9c966/42a45ce941d64ac59c4ef2f620223f49 [2019-12-18 23:24:11,860 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 23:24:11,862 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 23:24:11,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 23:24:11,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 23:24:11,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 23:24:11,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:24:11" (1/1) ... [2019-12-18 23:24:11,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc2ca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:24:11, skipping insertion in model container [2019-12-18 23:24:11,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:24:11" (1/1) ... [2019-12-18 23:24:11,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 23:24:11,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 23:24:12,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 23:24:12,382 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 23:24:12,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 23:24:12,523 INFO L208 MainTranslator]: Completed translation [2019-12-18 23:24:12,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:24:12 WrapperNode [2019-12-18 23:24:12,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 23:24:12,524 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 23:24:12,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 23:24:12,524 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 23:24:12,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:24:12" (1/1) ... [2019-12-18 23:24:12,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:24:12" (1/1) ... [2019-12-18 23:24:12,574 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 23:24:12,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 23:24:12,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 23:24:12,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 23:24:12,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:24:12" (1/1) ... [2019-12-18 23:24:12,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:24:12" (1/1) ... [2019-12-18 23:24:12,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:24:12" (1/1) ... [2019-12-18 23:24:12,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:24:12" (1/1) ... [2019-12-18 23:24:12,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:24:12" (1/1) ... [2019-12-18 23:24:12,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:24:12" (1/1) ... [2019-12-18 23:24:12,613 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:24:12" (1/1) ... [2019-12-18 23:24:12,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 23:24:12,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 23:24:12,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 23:24:12,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 23:24:12,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:24:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 23:24:12,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-12-18 23:24:12,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-18 23:24:12,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 23:24:12,686 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2019-12-18 23:24:12,686 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2019-12-18 23:24:12,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 23:24:12,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 23:24:12,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 23:24:12,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 23:24:12,688 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-18 23:24:13,091 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 23:24:13,091 INFO L287 CfgBuilder]: Removed 9 assume(true) statements. [2019-12-18 23:24:13,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:24:13 BoogieIcfgContainer [2019-12-18 23:24:13,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 23:24:13,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 23:24:13,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 23:24:13,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 23:24:13,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 11:24:11" (1/3) ... [2019-12-18 23:24:13,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c56a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:24:13, skipping insertion in model container [2019-12-18 23:24:13,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:24:12" (2/3) ... [2019-12-18 23:24:13,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c56a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:24:13, skipping insertion in model container [2019-12-18 23:24:13,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:24:13" (3/3) ... [2019-12-18 23:24:13,102 INFO L109 eAbstractionObserver]: Analyzing ICFG nondet-array-1.i [2019-12-18 23:24:13,112 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 23:24:13,113 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 23:24:13,120 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-18 23:24:13,121 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 23:24:13,144 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:13,144 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:13,144 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:13,144 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:13,145 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:13,145 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:13,146 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:13,149 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:13,150 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:13,150 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:13,150 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:13,150 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:13,172 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 23:24:13,189 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 23:24:13,190 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 23:24:13,190 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 23:24:13,190 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 23:24:13,190 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 23:24:13,190 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 23:24:13,190 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 23:24:13,190 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 23:24:13,203 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 66 transitions [2019-12-18 23:24:13,204 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 66 transitions [2019-12-18 23:24:13,254 INFO L126 PetriNetUnfolder]: 11/98 cut-off events. [2019-12-18 23:24:13,254 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:24:13,260 INFO L76 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 98 events. 11/98 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 197 event pairs. 10/92 useless extension candidates. Maximal degree in co-relation 50. Up to 4 conditions per place. [2019-12-18 23:24:13,265 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 66 transitions [2019-12-18 23:24:13,289 INFO L126 PetriNetUnfolder]: 11/98 cut-off events. [2019-12-18 23:24:13,289 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:24:13,291 INFO L76 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 98 events. 11/98 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 197 event pairs. 10/92 useless extension candidates. Maximal degree in co-relation 50. Up to 4 conditions per place. [2019-12-18 23:24:13,293 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 370 [2019-12-18 23:24:13,294 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 23:24:14,720 WARN L192 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-12-18 23:24:14,832 INFO L206 etLargeBlockEncoding]: Checked pairs total: 289 [2019-12-18 23:24:14,832 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2019-12-18 23:24:14,835 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 14 places, 14 transitions [2019-12-18 23:24:14,844 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 27 states. [2019-12-18 23:24:14,846 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-12-18 23:24:14,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-18 23:24:14,852 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:24:14,853 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-18 23:24:14,853 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:24:14,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:24:14,859 INFO L82 PathProgramCache]: Analyzing trace with hash 7975439, now seen corresponding path program 1 times [2019-12-18 23:24:14,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:24:14,869 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134978250] [2019-12-18 23:24:14,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:24:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:24:15,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:24:15,073 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134978250] [2019-12-18 23:24:15,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:24:15,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 23:24:15,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95419961] [2019-12-18 23:24:15,081 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 23:24:15,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:24:15,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 23:24:15,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:24:15,106 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2019-12-18 23:24:15,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:24:15,143 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2019-12-18 23:24:15,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 23:24:15,145 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-18 23:24:15,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:24:15,155 INFO L225 Difference]: With dead ends: 27 [2019-12-18 23:24:15,156 INFO L226 Difference]: Without dead ends: 23 [2019-12-18 23:24:15,157 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:24:15,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-18 23:24:15,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-18 23:24:15,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-18 23:24:15,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 32 transitions. [2019-12-18 23:24:15,194 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 32 transitions. Word has length 4 [2019-12-18 23:24:15,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:24:15,194 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 32 transitions. [2019-12-18 23:24:15,195 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 23:24:15,195 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2019-12-18 23:24:15,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-18 23:24:15,195 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:24:15,196 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-12-18 23:24:15,196 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:24:15,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:24:15,196 INFO L82 PathProgramCache]: Analyzing trace with hash -940684826, now seen corresponding path program 1 times [2019-12-18 23:24:15,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:24:15,197 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171099312] [2019-12-18 23:24:15,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:24:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 23:24:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 23:24:15,276 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 23:24:15,276 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 23:24:15,278 WARN L364 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 23:24:15,278 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2019-12-18 23:24:15,285 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:15,285 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:15,285 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:15,285 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:15,285 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:15,286 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:15,286 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:15,286 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:15,286 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:15,287 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:15,287 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:15,287 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:15,287 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:15,287 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:15,288 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:15,288 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:15,288 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:15,289 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:15,289 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:15,290 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:15,291 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:15,291 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:15,291 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:15,291 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:15,304 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 23:24:15,305 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 23:24:15,305 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 23:24:15,305 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 23:24:15,305 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 23:24:15,305 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 23:24:15,305 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 23:24:15,305 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 23:24:15,306 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 23:24:15,310 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 73 transitions [2019-12-18 23:24:15,310 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 71 places, 73 transitions [2019-12-18 23:24:15,365 INFO L126 PetriNetUnfolder]: 22/178 cut-off events. [2019-12-18 23:24:15,365 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:24:15,368 INFO L76 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 178 events. 22/178 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 451 event pairs. 28/176 useless extension candidates. Maximal degree in co-relation 100. Up to 8 conditions per place. [2019-12-18 23:24:15,375 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 71 places, 73 transitions [2019-12-18 23:24:15,420 INFO L126 PetriNetUnfolder]: 22/178 cut-off events. [2019-12-18 23:24:15,421 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:24:15,425 INFO L76 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 178 events. 22/178 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 451 event pairs. 28/176 useless extension candidates. Maximal degree in co-relation 100. Up to 8 conditions per place. [2019-12-18 23:24:15,430 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 900 [2019-12-18 23:24:15,430 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 23:24:16,545 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-12-18 23:24:16,626 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1597 [2019-12-18 23:24:16,626 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2019-12-18 23:24:16,626 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 23 transitions [2019-12-18 23:24:16,638 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 242 states. [2019-12-18 23:24:16,638 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2019-12-18 23:24:16,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-18 23:24:16,639 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:24:16,639 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-18 23:24:16,639 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:24:16,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:24:16,640 INFO L82 PathProgramCache]: Analyzing trace with hash 12287151, now seen corresponding path program 1 times [2019-12-18 23:24:16,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:24:16,640 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785938949] [2019-12-18 23:24:16,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:24:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:24:16,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:24:16,690 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785938949] [2019-12-18 23:24:16,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:24:16,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 23:24:16,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286043717] [2019-12-18 23:24:16,691 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 23:24:16,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:24:16,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 23:24:16,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:24:16,692 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 3 states. [2019-12-18 23:24:16,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:24:16,723 INFO L93 Difference]: Finished difference Result 242 states and 550 transitions. [2019-12-18 23:24:16,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 23:24:16,723 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-18 23:24:16,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:24:16,729 INFO L225 Difference]: With dead ends: 242 [2019-12-18 23:24:16,729 INFO L226 Difference]: Without dead ends: 216 [2019-12-18 23:24:16,730 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:24:16,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2019-12-18 23:24:16,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2019-12-18 23:24:16,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2019-12-18 23:24:16,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 494 transitions. [2019-12-18 23:24:16,758 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 494 transitions. Word has length 4 [2019-12-18 23:24:16,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:24:16,759 INFO L462 AbstractCegarLoop]: Abstraction has 216 states and 494 transitions. [2019-12-18 23:24:16,759 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 23:24:16,759 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 494 transitions. [2019-12-18 23:24:16,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 23:24:16,760 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:24:16,760 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:24:16,760 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:24:16,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:24:16,760 INFO L82 PathProgramCache]: Analyzing trace with hash 2023180747, now seen corresponding path program 1 times [2019-12-18 23:24:16,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:24:16,761 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855729425] [2019-12-18 23:24:16,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:24:16,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:24:16,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 23:24:16,825 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855729425] [2019-12-18 23:24:16,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:24:16,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 23:24:16,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735901343] [2019-12-18 23:24:16,826 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 23:24:16,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:24:16,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 23:24:16,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:24:16,827 INFO L87 Difference]: Start difference. First operand 216 states and 494 transitions. Second operand 4 states. [2019-12-18 23:24:16,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:24:16,863 INFO L93 Difference]: Finished difference Result 203 states and 426 transitions. [2019-12-18 23:24:16,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 23:24:16,863 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-18 23:24:16,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:24:16,866 INFO L225 Difference]: With dead ends: 203 [2019-12-18 23:24:16,866 INFO L226 Difference]: Without dead ends: 203 [2019-12-18 23:24:16,867 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:24:16,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2019-12-18 23:24:16,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 197. [2019-12-18 23:24:16,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2019-12-18 23:24:16,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 420 transitions. [2019-12-18 23:24:16,897 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 420 transitions. Word has length 8 [2019-12-18 23:24:16,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:24:16,897 INFO L462 AbstractCegarLoop]: Abstraction has 197 states and 420 transitions. [2019-12-18 23:24:16,897 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 23:24:16,898 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 420 transitions. [2019-12-18 23:24:16,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 23:24:16,899 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:24:16,899 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2019-12-18 23:24:16,899 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:24:16,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:24:16,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1086197660, now seen corresponding path program 1 times [2019-12-18 23:24:16,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:24:16,901 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899948434] [2019-12-18 23:24:16,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:24:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 23:24:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 23:24:16,964 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 23:24:16,964 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 23:24:16,964 WARN L364 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 23:24:16,965 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2019-12-18 23:24:16,972 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,973 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,973 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,973 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,973 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,973 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,974 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,974 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,974 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,974 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,974 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,975 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,975 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,975 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,975 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,975 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,976 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,976 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,976 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,976 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,976 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,977 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,977 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,977 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,977 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,977 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,979 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,979 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,979 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,979 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,979 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,981 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,981 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,981 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,982 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,982 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:16,992 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 23:24:16,993 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 23:24:16,993 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 23:24:16,993 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 23:24:16,993 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 23:24:16,993 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 23:24:16,993 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 23:24:16,993 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 23:24:16,994 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 23:24:16,996 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 80 transitions [2019-12-18 23:24:16,996 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 79 places, 80 transitions [2019-12-18 23:24:17,044 INFO L126 PetriNetUnfolder]: 44/325 cut-off events. [2019-12-18 23:24:17,044 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:24:17,048 INFO L76 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 325 events. 44/325 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1074 event pairs. 58/327 useless extension candidates. Maximal degree in co-relation 186. Up to 16 conditions per place. [2019-12-18 23:24:17,067 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 79 places, 80 transitions [2019-12-18 23:24:17,103 INFO L126 PetriNetUnfolder]: 44/325 cut-off events. [2019-12-18 23:24:17,103 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:24:17,106 INFO L76 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 325 events. 44/325 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1074 event pairs. 58/327 useless extension candidates. Maximal degree in co-relation 186. Up to 16 conditions per place. [2019-12-18 23:24:17,113 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1470 [2019-12-18 23:24:17,114 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 23:24:18,284 WARN L192 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-12-18 23:24:18,363 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2828 [2019-12-18 23:24:18,363 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2019-12-18 23:24:18,363 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 28 transitions [2019-12-18 23:24:18,412 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1150 states. [2019-12-18 23:24:18,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states. [2019-12-18 23:24:18,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-18 23:24:18,413 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:24:18,413 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-18 23:24:18,413 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:24:18,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:24:18,414 INFO L82 PathProgramCache]: Analyzing trace with hash 16813297, now seen corresponding path program 1 times [2019-12-18 23:24:18,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:24:18,414 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530822610] [2019-12-18 23:24:18,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:24:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:24:18,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:24:18,451 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530822610] [2019-12-18 23:24:18,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:24:18,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 23:24:18,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630574463] [2019-12-18 23:24:18,452 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 23:24:18,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:24:18,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 23:24:18,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:24:18,453 INFO L87 Difference]: Start difference. First operand 1150 states. Second operand 3 states. [2019-12-18 23:24:18,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:24:18,515 INFO L93 Difference]: Finished difference Result 1150 states and 3360 transitions. [2019-12-18 23:24:18,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 23:24:18,516 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-18 23:24:18,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:24:18,525 INFO L225 Difference]: With dead ends: 1150 [2019-12-18 23:24:18,526 INFO L226 Difference]: Without dead ends: 1024 [2019-12-18 23:24:18,526 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:24:18,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2019-12-18 23:24:18,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1024. [2019-12-18 23:24:18,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2019-12-18 23:24:18,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 3009 transitions. [2019-12-18 23:24:18,598 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 3009 transitions. Word has length 4 [2019-12-18 23:24:18,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:24:18,599 INFO L462 AbstractCegarLoop]: Abstraction has 1024 states and 3009 transitions. [2019-12-18 23:24:18,599 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 23:24:18,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 3009 transitions. [2019-12-18 23:24:18,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 23:24:18,600 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:24:18,600 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:24:18,600 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:24:18,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:24:18,601 INFO L82 PathProgramCache]: Analyzing trace with hash -427060089, now seen corresponding path program 1 times [2019-12-18 23:24:18,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:24:18,601 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920502303] [2019-12-18 23:24:18,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:24:18,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:24:18,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 23:24:18,685 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920502303] [2019-12-18 23:24:18,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:24:18,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 23:24:18,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718790433] [2019-12-18 23:24:18,686 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 23:24:18,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:24:18,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 23:24:18,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:24:18,687 INFO L87 Difference]: Start difference. First operand 1024 states and 3009 transitions. Second operand 4 states. [2019-12-18 23:24:18,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:24:18,755 INFO L93 Difference]: Finished difference Result 1015 states and 2784 transitions. [2019-12-18 23:24:18,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 23:24:18,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-18 23:24:18,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:24:18,763 INFO L225 Difference]: With dead ends: 1015 [2019-12-18 23:24:18,763 INFO L226 Difference]: Without dead ends: 1015 [2019-12-18 23:24:18,764 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:24:18,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2019-12-18 23:24:18,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 977. [2019-12-18 23:24:18,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 977 states. [2019-12-18 23:24:18,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 2718 transitions. [2019-12-18 23:24:18,796 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 2718 transitions. Word has length 8 [2019-12-18 23:24:18,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:24:18,799 INFO L462 AbstractCegarLoop]: Abstraction has 977 states and 2718 transitions. [2019-12-18 23:24:18,801 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 23:24:18,801 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 2718 transitions. [2019-12-18 23:24:18,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-18 23:24:18,810 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:24:18,810 INFO L411 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2019-12-18 23:24:18,810 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:24:18,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:24:18,811 INFO L82 PathProgramCache]: Analyzing trace with hash 880459202, now seen corresponding path program 1 times [2019-12-18 23:24:18,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:24:18,812 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968032011] [2019-12-18 23:24:18,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:24:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 23:24:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 23:24:18,862 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 23:24:18,862 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 23:24:18,863 WARN L364 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 23:24:18,863 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2019-12-18 23:24:18,873 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,873 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,873 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,873 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,874 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,874 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,874 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,874 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,874 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,874 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,874 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,875 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,875 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,875 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,875 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,875 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,875 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,875 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,875 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,876 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,876 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,876 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,876 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,876 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,876 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,876 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,876 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,876 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,877 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,877 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,877 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,877 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,877 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,879 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,879 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,879 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,879 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,879 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,880 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,880 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,880 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,880 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,880 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,881 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,881 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,881 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,881 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,881 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:18,884 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 23:24:18,885 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 23:24:18,885 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 23:24:18,885 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 23:24:18,885 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 23:24:18,885 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 23:24:18,886 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 23:24:18,886 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 23:24:18,886 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 23:24:18,888 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 87 transitions [2019-12-18 23:24:18,888 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 87 places, 87 transitions [2019-12-18 23:24:18,945 INFO L126 PetriNetUnfolder]: 90/608 cut-off events. [2019-12-18 23:24:18,945 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:24:18,950 INFO L76 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 608 events. 90/608 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2681 event pairs. 109/611 useless extension candidates. Maximal degree in co-relation 345. Up to 32 conditions per place. [2019-12-18 23:24:18,963 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 87 places, 87 transitions [2019-12-18 23:24:19,018 INFO L126 PetriNetUnfolder]: 90/608 cut-off events. [2019-12-18 23:24:19,018 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:24:19,023 INFO L76 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 608 events. 90/608 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2681 event pairs. 109/611 useless extension candidates. Maximal degree in co-relation 345. Up to 32 conditions per place. [2019-12-18 23:24:19,037 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2120 [2019-12-18 23:24:19,038 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 23:24:20,073 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-12-18 23:24:20,203 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3986 [2019-12-18 23:24:20,203 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2019-12-18 23:24:20,203 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 33 transitions [2019-12-18 23:24:20,532 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5482 states. [2019-12-18 23:24:20,533 INFO L276 IsEmpty]: Start isEmpty. Operand 5482 states. [2019-12-18 23:24:20,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-18 23:24:20,533 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:24:20,533 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-18 23:24:20,533 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:24:20,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:24:20,534 INFO L82 PathProgramCache]: Analyzing trace with hash 21615603, now seen corresponding path program 1 times [2019-12-18 23:24:20,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:24:20,534 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746825915] [2019-12-18 23:24:20,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:24:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:24:20,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:24:20,558 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746825915] [2019-12-18 23:24:20,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:24:20,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 23:24:20,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352211587] [2019-12-18 23:24:20,559 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 23:24:20,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:24:20,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 23:24:20,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:24:20,560 INFO L87 Difference]: Start difference. First operand 5482 states. Second operand 3 states. [2019-12-18 23:24:20,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:24:20,668 INFO L93 Difference]: Finished difference Result 5482 states and 19554 transitions. [2019-12-18 23:24:20,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 23:24:20,668 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-18 23:24:20,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:24:20,712 INFO L225 Difference]: With dead ends: 5482 [2019-12-18 23:24:20,712 INFO L226 Difference]: Without dead ends: 4856 [2019-12-18 23:24:20,713 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:24:20,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2019-12-18 23:24:20,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2019-12-18 23:24:20,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2019-12-18 23:24:20,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 17428 transitions. [2019-12-18 23:24:20,933 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 17428 transitions. Word has length 4 [2019-12-18 23:24:20,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:24:20,933 INFO L462 AbstractCegarLoop]: Abstraction has 4856 states and 17428 transitions. [2019-12-18 23:24:20,933 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 23:24:20,933 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 17428 transitions. [2019-12-18 23:24:20,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 23:24:20,934 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:24:20,934 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:24:20,934 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:24:20,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:24:20,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1297801215, now seen corresponding path program 1 times [2019-12-18 23:24:20,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:24:20,935 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076117591] [2019-12-18 23:24:20,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:24:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:24:20,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 23:24:20,972 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076117591] [2019-12-18 23:24:20,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:24:20,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 23:24:20,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718889693] [2019-12-18 23:24:20,973 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 23:24:20,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:24:20,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 23:24:20,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:24:20,974 INFO L87 Difference]: Start difference. First operand 4856 states and 17428 transitions. Second operand 4 states. [2019-12-18 23:24:21,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:24:21,051 INFO L93 Difference]: Finished difference Result 4995 states and 16978 transitions. [2019-12-18 23:24:21,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 23:24:21,051 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-18 23:24:21,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:24:21,091 INFO L225 Difference]: With dead ends: 4995 [2019-12-18 23:24:21,091 INFO L226 Difference]: Without dead ends: 4995 [2019-12-18 23:24:21,096 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:24:21,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4995 states. [2019-12-18 23:24:21,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4995 to 4797. [2019-12-18 23:24:21,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4797 states. [2019-12-18 23:24:21,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4797 states to 4797 states and 16480 transitions. [2019-12-18 23:24:21,270 INFO L78 Accepts]: Start accepts. Automaton has 4797 states and 16480 transitions. Word has length 8 [2019-12-18 23:24:21,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:24:21,270 INFO L462 AbstractCegarLoop]: Abstraction has 4797 states and 16480 transitions. [2019-12-18 23:24:21,271 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 23:24:21,271 INFO L276 IsEmpty]: Start isEmpty. Operand 4797 states and 16480 transitions. [2019-12-18 23:24:21,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-18 23:24:21,272 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:24:21,272 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:24:21,272 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:24:21,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:24:21,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1965943814, now seen corresponding path program 1 times [2019-12-18 23:24:21,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:24:21,273 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647439058] [2019-12-18 23:24:21,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:24:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:24:21,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 23:24:21,310 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647439058] [2019-12-18 23:24:21,310 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474526259] [2019-12-18 23:24:21,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:24:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:24:21,377 INFO L264 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-18 23:24:21,379 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:24:21,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 23:24:21,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:24:21,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2019-12-18 23:24:21,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823177633] [2019-12-18 23:24:21,486 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-18 23:24:21,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:24:21,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-18 23:24:21,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-18 23:24:21,487 INFO L87 Difference]: Start difference. First operand 4797 states and 16480 transitions. Second operand 6 states. [2019-12-18 23:24:21,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:24:21,589 INFO L93 Difference]: Finished difference Result 4793 states and 16469 transitions. [2019-12-18 23:24:21,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 23:24:21,589 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-12-18 23:24:21,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:24:21,644 INFO L225 Difference]: With dead ends: 4793 [2019-12-18 23:24:21,645 INFO L226 Difference]: Without dead ends: 4793 [2019-12-18 23:24:21,645 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-18 23:24:21,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4793 states. [2019-12-18 23:24:21,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4793 to 4793. [2019-12-18 23:24:21,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4793 states. [2019-12-18 23:24:21,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4793 states to 4793 states and 16469 transitions. [2019-12-18 23:24:21,833 INFO L78 Accepts]: Start accepts. Automaton has 4793 states and 16469 transitions. Word has length 16 [2019-12-18 23:24:21,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:24:21,834 INFO L462 AbstractCegarLoop]: Abstraction has 4793 states and 16469 transitions. [2019-12-18 23:24:21,834 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-18 23:24:21,834 INFO L276 IsEmpty]: Start isEmpty. Operand 4793 states and 16469 transitions. [2019-12-18 23:24:21,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-18 23:24:21,836 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:24:21,836 INFO L411 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2019-12-18 23:24:22,039 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:24:22,040 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:24:22,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:24:22,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1144536387, now seen corresponding path program 1 times [2019-12-18 23:24:22,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:24:22,041 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809302524] [2019-12-18 23:24:22,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:24:22,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 23:24:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 23:24:22,082 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 23:24:22,082 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 23:24:22,083 WARN L364 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 23:24:22,083 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2019-12-18 23:24:22,090 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,091 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,091 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,091 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,091 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,091 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,091 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,092 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,092 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,092 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,092 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,092 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,092 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,092 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,093 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,093 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,093 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,093 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,093 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,093 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,093 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,094 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,094 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,094 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,094 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,094 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,094 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,095 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,095 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,095 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,095 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,095 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,095 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,096 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,096 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,096 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,096 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,096 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,097 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,097 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,098 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,098 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,098 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,098 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,099 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,100 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,100 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,100 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,100 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,101 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,102 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,102 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,102 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,102 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,102 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,104 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,104 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,104 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,104 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,105 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:22,112 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 23:24:22,113 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 23:24:22,113 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 23:24:22,113 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 23:24:22,113 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 23:24:22,113 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 23:24:22,113 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 23:24:22,113 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 23:24:22,113 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 23:24:22,115 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 94 transitions [2019-12-18 23:24:22,115 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 95 places, 94 transitions [2019-12-18 23:24:22,250 INFO L126 PetriNetUnfolder]: 188/1167 cut-off events. [2019-12-18 23:24:22,251 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:24:22,260 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1278 conditions, 1167 events. 188/1167 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6730 event pairs. 201/1164 useless extension candidates. Maximal degree in co-relation 653. Up to 80 conditions per place. [2019-12-18 23:24:22,290 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 95 places, 94 transitions [2019-12-18 23:24:22,408 INFO L126 PetriNetUnfolder]: 188/1167 cut-off events. [2019-12-18 23:24:22,408 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:24:22,418 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1278 conditions, 1167 events. 188/1167 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6730 event pairs. 201/1164 useless extension candidates. Maximal degree in co-relation 653. Up to 80 conditions per place. [2019-12-18 23:24:22,488 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2850 [2019-12-18 23:24:22,488 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 23:24:23,701 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-12-18 23:24:23,826 INFO L206 etLargeBlockEncoding]: Checked pairs total: 6149 [2019-12-18 23:24:23,827 INFO L214 etLargeBlockEncoding]: Total number of compositions: 60 [2019-12-18 23:24:23,827 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 38 transitions [2019-12-18 23:24:26,003 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26310 states. [2019-12-18 23:24:26,003 INFO L276 IsEmpty]: Start isEmpty. Operand 26310 states. [2019-12-18 23:24:26,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-18 23:24:26,004 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:24:26,004 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-18 23:24:26,004 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:24:26,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:24:26,004 INFO L82 PathProgramCache]: Analyzing trace with hash 26696947, now seen corresponding path program 1 times [2019-12-18 23:24:26,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:24:26,005 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247725900] [2019-12-18 23:24:26,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:24:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:24:26,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:24:26,036 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247725900] [2019-12-18 23:24:26,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:24:26,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 23:24:26,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305040611] [2019-12-18 23:24:26,036 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 23:24:26,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:24:26,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 23:24:26,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:24:26,037 INFO L87 Difference]: Start difference. First operand 26310 states. Second operand 3 states. [2019-12-18 23:24:26,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:24:26,259 INFO L93 Difference]: Finished difference Result 26310 states and 110676 transitions. [2019-12-18 23:24:26,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 23:24:26,260 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-18 23:24:26,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:24:26,557 INFO L225 Difference]: With dead ends: 26310 [2019-12-18 23:24:26,557 INFO L226 Difference]: Without dead ends: 23184 [2019-12-18 23:24:26,558 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:24:26,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23184 states. [2019-12-18 23:24:27,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23184 to 23184. [2019-12-18 23:24:27,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23184 states. [2019-12-18 23:24:28,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23184 states to 23184 states and 98175 transitions. [2019-12-18 23:24:28,879 INFO L78 Accepts]: Start accepts. Automaton has 23184 states and 98175 transitions. Word has length 4 [2019-12-18 23:24:28,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:24:28,879 INFO L462 AbstractCegarLoop]: Abstraction has 23184 states and 98175 transitions. [2019-12-18 23:24:28,879 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 23:24:28,879 INFO L276 IsEmpty]: Start isEmpty. Operand 23184 states and 98175 transitions. [2019-12-18 23:24:28,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 23:24:28,880 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:24:28,880 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:24:28,880 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:24:28,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:24:28,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1482219427, now seen corresponding path program 1 times [2019-12-18 23:24:28,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:24:28,881 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524486224] [2019-12-18 23:24:28,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:24:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:24:28,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 23:24:28,911 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524486224] [2019-12-18 23:24:28,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:24:28,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 23:24:28,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414375336] [2019-12-18 23:24:28,912 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 23:24:28,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:24:28,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 23:24:28,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:24:28,913 INFO L87 Difference]: Start difference. First operand 23184 states and 98175 transitions. Second operand 4 states. [2019-12-18 23:24:29,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:24:29,047 INFO L93 Difference]: Finished difference Result 24543 states and 99524 transitions. [2019-12-18 23:24:29,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 23:24:29,047 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-18 23:24:29,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:24:29,127 INFO L225 Difference]: With dead ends: 24543 [2019-12-18 23:24:29,127 INFO L226 Difference]: Without dead ends: 24543 [2019-12-18 23:24:29,127 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:24:29,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24543 states. [2019-12-18 23:24:30,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24543 to 23577. [2019-12-18 23:24:30,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23577 states. [2019-12-18 23:24:30,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23577 states to 23577 states and 96338 transitions. [2019-12-18 23:24:30,265 INFO L78 Accepts]: Start accepts. Automaton has 23577 states and 96338 transitions. Word has length 8 [2019-12-18 23:24:30,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:24:30,265 INFO L462 AbstractCegarLoop]: Abstraction has 23577 states and 96338 transitions. [2019-12-18 23:24:30,265 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 23:24:30,265 INFO L276 IsEmpty]: Start isEmpty. Operand 23577 states and 96338 transitions. [2019-12-18 23:24:30,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-18 23:24:30,266 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:24:30,266 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:24:30,266 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:24:30,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:24:30,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1647353871, now seen corresponding path program 1 times [2019-12-18 23:24:30,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:24:30,267 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722792489] [2019-12-18 23:24:30,267 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:24:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:24:30,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 23:24:30,320 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722792489] [2019-12-18 23:24:30,321 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048128585] [2019-12-18 23:24:30,321 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:24:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:24:30,387 INFO L264 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-18 23:24:30,389 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:24:30,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 23:24:30,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:24:30,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2019-12-18 23:24:30,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004556795] [2019-12-18 23:24:30,413 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-18 23:24:30,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:24:30,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-18 23:24:30,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-18 23:24:30,417 INFO L87 Difference]: Start difference. First operand 23577 states and 96338 transitions. Second operand 6 states. [2019-12-18 23:24:30,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:24:30,646 INFO L93 Difference]: Finished difference Result 23573 states and 96327 transitions. [2019-12-18 23:24:30,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 23:24:30,647 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-12-18 23:24:30,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:24:30,743 INFO L225 Difference]: With dead ends: 23573 [2019-12-18 23:24:30,743 INFO L226 Difference]: Without dead ends: 23573 [2019-12-18 23:24:30,744 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-18 23:24:31,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23573 states. [2019-12-18 23:24:31,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23573 to 23573. [2019-12-18 23:24:31,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23573 states. [2019-12-18 23:24:32,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23573 states to 23573 states and 96327 transitions. [2019-12-18 23:24:32,014 INFO L78 Accepts]: Start accepts. Automaton has 23573 states and 96327 transitions. Word has length 16 [2019-12-18 23:24:32,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:24:32,014 INFO L462 AbstractCegarLoop]: Abstraction has 23573 states and 96327 transitions. [2019-12-18 23:24:32,014 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-18 23:24:32,014 INFO L276 IsEmpty]: Start isEmpty. Operand 23573 states and 96327 transitions. [2019-12-18 23:24:32,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-18 23:24:32,017 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:24:32,017 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:24:32,220 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:24:32,221 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:24:32,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:24:32,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1700547162, now seen corresponding path program 1 times [2019-12-18 23:24:32,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:24:32,222 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258548596] [2019-12-18 23:24:32,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:24:32,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:24:32,268 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 23:24:32,269 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258548596] [2019-12-18 23:24:32,269 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572309877] [2019-12-18 23:24:32,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:24:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:24:32,336 INFO L264 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-18 23:24:32,337 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:24:32,379 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 23:24:32,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:24:32,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2019-12-18 23:24:32,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823444137] [2019-12-18 23:24:32,381 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-18 23:24:32,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:24:32,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-18 23:24:32,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-12-18 23:24:32,381 INFO L87 Difference]: Start difference. First operand 23573 states and 96327 transitions. Second operand 8 states. [2019-12-18 23:24:32,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:24:32,525 INFO L93 Difference]: Finished difference Result 23557 states and 96271 transitions. [2019-12-18 23:24:32,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 23:24:32,526 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2019-12-18 23:24:32,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:24:32,579 INFO L225 Difference]: With dead ends: 23557 [2019-12-18 23:24:32,580 INFO L226 Difference]: Without dead ends: 23557 [2019-12-18 23:24:32,580 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-12-18 23:24:32,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23557 states. [2019-12-18 23:24:34,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23557 to 23557. [2019-12-18 23:24:34,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23557 states. [2019-12-18 23:24:34,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23557 states to 23557 states and 96271 transitions. [2019-12-18 23:24:34,542 INFO L78 Accepts]: Start accepts. Automaton has 23557 states and 96271 transitions. Word has length 20 [2019-12-18 23:24:34,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:24:34,542 INFO L462 AbstractCegarLoop]: Abstraction has 23557 states and 96271 transitions. [2019-12-18 23:24:34,542 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-18 23:24:34,543 INFO L276 IsEmpty]: Start isEmpty. Operand 23557 states and 96271 transitions. [2019-12-18 23:24:34,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-18 23:24:34,548 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:24:34,548 INFO L411 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:24:34,751 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:24:34,751 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:24:34,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:24:34,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1187474448, now seen corresponding path program 1 times [2019-12-18 23:24:34,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:24:34,752 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096948501] [2019-12-18 23:24:34,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:24:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 23:24:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 23:24:34,784 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 23:24:34,784 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 23:24:34,784 WARN L364 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 23:24:34,785 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2019-12-18 23:24:34,793 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,793 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,794 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,794 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,794 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,794 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,794 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,794 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,795 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,795 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,795 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,795 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,795 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,795 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,795 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,795 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,796 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,796 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,796 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,796 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,796 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,796 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,797 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,797 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,797 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,797 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,797 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,797 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,797 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,798 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,798 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,798 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,798 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,798 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,798 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,798 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,798 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,799 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,799 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,799 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,799 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,799 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,800 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,800 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,800 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,800 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,800 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,801 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,802 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,802 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,802 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,802 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,803 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,803 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,804 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,804 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,804 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,805 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,805 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,805 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,805 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,806 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,807 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,807 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,807 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,807 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,808 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,809 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,809 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,809 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,809 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,809 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:34,814 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 23:24:34,815 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 23:24:34,815 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 23:24:34,815 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 23:24:34,815 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 23:24:34,815 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 23:24:34,815 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 23:24:34,815 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 23:24:34,816 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 23:24:34,817 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 101 transitions [2019-12-18 23:24:34,817 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 103 places, 101 transitions [2019-12-18 23:24:35,133 INFO L126 PetriNetUnfolder]: 398/2286 cut-off events. [2019-12-18 23:24:35,133 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:24:35,157 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2518 conditions, 2286 events. 398/2286 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 16149 event pairs. 378/2266 useless extension candidates. Maximal degree in co-relation 1266. Up to 192 conditions per place. [2019-12-18 23:24:35,210 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 103 places, 101 transitions [2019-12-18 23:24:35,688 INFO L126 PetriNetUnfolder]: 398/2286 cut-off events. [2019-12-18 23:24:35,688 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:24:35,710 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2518 conditions, 2286 events. 398/2286 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 16149 event pairs. 378/2266 useless extension candidates. Maximal degree in co-relation 1266. Up to 192 conditions per place. [2019-12-18 23:24:35,758 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3660 [2019-12-18 23:24:35,758 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 23:24:36,925 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-12-18 23:24:37,014 INFO L206 etLargeBlockEncoding]: Checked pairs total: 7553 [2019-12-18 23:24:37,014 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2019-12-18 23:24:37,015 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 43 transitions [2019-12-18 23:25:04,550 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 127122 states. [2019-12-18 23:25:04,550 INFO L276 IsEmpty]: Start isEmpty. Operand 127122 states. [2019-12-18 23:25:04,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-18 23:25:04,551 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:25:04,551 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-18 23:25:04,551 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:25:04,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:25:04,551 INFO L82 PathProgramCache]: Analyzing trace with hash 32083310, now seen corresponding path program 1 times [2019-12-18 23:25:04,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:25:04,552 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919256182] [2019-12-18 23:25:04,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:25:04,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:25:04,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:25:04,571 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919256182] [2019-12-18 23:25:04,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:25:04,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 23:25:04,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674528362] [2019-12-18 23:25:04,572 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 23:25:04,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:25:04,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 23:25:04,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:25:04,573 INFO L87 Difference]: Start difference. First operand 127122 states. Second operand 3 states. [2019-12-18 23:25:05,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:25:05,644 INFO L93 Difference]: Finished difference Result 127122 states and 615398 transitions. [2019-12-18 23:25:05,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 23:25:05,644 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-18 23:25:05,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:25:06,030 INFO L225 Difference]: With dead ends: 127122 [2019-12-18 23:25:06,030 INFO L226 Difference]: Without dead ends: 111496 [2019-12-18 23:25:06,030 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:25:12,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111496 states. [2019-12-18 23:25:14,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111496 to 111496. [2019-12-18 23:25:14,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111496 states. [2019-12-18 23:25:15,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111496 states to 111496 states and 543522 transitions. [2019-12-18 23:25:15,837 INFO L78 Accepts]: Start accepts. Automaton has 111496 states and 543522 transitions. Word has length 4 [2019-12-18 23:25:15,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:25:15,837 INFO L462 AbstractCegarLoop]: Abstraction has 111496 states and 543522 transitions. [2019-12-18 23:25:15,837 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 23:25:15,838 INFO L276 IsEmpty]: Start isEmpty. Operand 111496 states and 543522 transitions. [2019-12-18 23:25:15,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 23:25:15,838 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:25:15,838 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:25:15,838 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:25:15,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:25:15,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1213874105, now seen corresponding path program 1 times [2019-12-18 23:25:15,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:25:15,839 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037594105] [2019-12-18 23:25:15,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:25:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:25:15,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 23:25:15,883 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037594105] [2019-12-18 23:25:15,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:25:15,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 23:25:15,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921706633] [2019-12-18 23:25:15,884 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 23:25:15,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:25:15,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 23:25:15,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:25:15,884 INFO L87 Difference]: Start difference. First operand 111496 states and 543522 transitions. Second operand 4 states. [2019-12-18 23:25:16,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:25:16,610 INFO L93 Difference]: Finished difference Result 120747 states and 568406 transitions. [2019-12-18 23:25:16,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 23:25:16,611 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-18 23:25:16,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:25:23,471 INFO L225 Difference]: With dead ends: 120747 [2019-12-18 23:25:23,471 INFO L226 Difference]: Without dead ends: 120747 [2019-12-18 23:25:23,471 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:25:25,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120747 states. [2019-12-18 23:25:28,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120747 to 116197. [2019-12-18 23:25:28,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116197 states. [2019-12-18 23:25:28,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116197 states to 116197 states and 549860 transitions. [2019-12-18 23:25:28,607 INFO L78 Accepts]: Start accepts. Automaton has 116197 states and 549860 transitions. Word has length 8 [2019-12-18 23:25:28,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:25:28,608 INFO L462 AbstractCegarLoop]: Abstraction has 116197 states and 549860 transitions. [2019-12-18 23:25:28,608 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 23:25:28,608 INFO L276 IsEmpty]: Start isEmpty. Operand 116197 states and 549860 transitions. [2019-12-18 23:25:28,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-18 23:25:28,608 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:25:28,608 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:25:28,609 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:25:28,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:25:28,609 INFO L82 PathProgramCache]: Analyzing trace with hash 579549320, now seen corresponding path program 1 times [2019-12-18 23:25:28,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:25:28,609 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257885615] [2019-12-18 23:25:28,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:25:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:25:28,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 23:25:28,647 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257885615] [2019-12-18 23:25:28,647 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502842965] [2019-12-18 23:25:28,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:25:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:25:28,718 INFO L264 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-18 23:25:28,720 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:25:28,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 23:25:28,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:25:28,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2019-12-18 23:25:28,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066370196] [2019-12-18 23:25:28,752 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-18 23:25:28,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:25:28,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-18 23:25:28,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-18 23:25:28,752 INFO L87 Difference]: Start difference. First operand 116197 states and 549860 transitions. Second operand 6 states. [2019-12-18 23:25:34,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:25:34,199 INFO L93 Difference]: Finished difference Result 116193 states and 549849 transitions. [2019-12-18 23:25:34,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 23:25:34,200 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-12-18 23:25:34,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:25:34,589 INFO L225 Difference]: With dead ends: 116193 [2019-12-18 23:25:34,590 INFO L226 Difference]: Without dead ends: 116193 [2019-12-18 23:25:34,590 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-18 23:25:36,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116193 states. [2019-12-18 23:25:39,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116193 to 116193. [2019-12-18 23:25:39,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116193 states. [2019-12-18 23:25:39,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116193 states to 116193 states and 549849 transitions. [2019-12-18 23:25:39,588 INFO L78 Accepts]: Start accepts. Automaton has 116193 states and 549849 transitions. Word has length 16 [2019-12-18 23:25:39,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:25:39,588 INFO L462 AbstractCegarLoop]: Abstraction has 116193 states and 549849 transitions. [2019-12-18 23:25:39,588 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-18 23:25:39,588 INFO L276 IsEmpty]: Start isEmpty. Operand 116193 states and 549849 transitions. [2019-12-18 23:25:39,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-18 23:25:39,590 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:25:39,590 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:25:39,791 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:25:39,791 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:25:39,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:25:39,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1298529040, now seen corresponding path program 1 times [2019-12-18 23:25:39,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:25:39,793 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29238172] [2019-12-18 23:25:39,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:25:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:25:39,856 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 23:25:39,857 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29238172] [2019-12-18 23:25:39,857 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27825423] [2019-12-18 23:25:39,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:25:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:25:39,922 INFO L264 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-18 23:25:39,923 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:25:39,949 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 23:25:39,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:25:39,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2019-12-18 23:25:39,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134362205] [2019-12-18 23:25:39,950 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-18 23:25:39,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:25:39,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-18 23:25:39,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-12-18 23:25:39,951 INFO L87 Difference]: Start difference. First operand 116193 states and 549849 transitions. Second operand 8 states. [2019-12-18 23:25:40,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:25:40,581 INFO L93 Difference]: Finished difference Result 116177 states and 549793 transitions. [2019-12-18 23:25:40,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 23:25:40,581 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2019-12-18 23:25:40,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:25:46,412 INFO L225 Difference]: With dead ends: 116177 [2019-12-18 23:25:46,413 INFO L226 Difference]: Without dead ends: 116177 [2019-12-18 23:25:46,413 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-12-18 23:25:48,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116177 states. [2019-12-18 23:25:50,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116177 to 116177. [2019-12-18 23:25:50,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116177 states. [2019-12-18 23:25:51,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116177 states to 116177 states and 549793 transitions. [2019-12-18 23:25:51,232 INFO L78 Accepts]: Start accepts. Automaton has 116177 states and 549793 transitions. Word has length 20 [2019-12-18 23:25:51,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:25:51,232 INFO L462 AbstractCegarLoop]: Abstraction has 116177 states and 549793 transitions. [2019-12-18 23:25:51,232 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-18 23:25:51,233 INFO L276 IsEmpty]: Start isEmpty. Operand 116177 states and 549793 transitions. [2019-12-18 23:25:51,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-18 23:25:51,237 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:25:51,237 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:25:51,440 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:25:51,441 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:25:51,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:25:51,441 INFO L82 PathProgramCache]: Analyzing trace with hash -982455207, now seen corresponding path program 1 times [2019-12-18 23:25:51,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:25:51,442 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208619930] [2019-12-18 23:25:51,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:25:51,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:25:51,511 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 23:25:51,512 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208619930] [2019-12-18 23:25:51,512 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730258162] [2019-12-18 23:25:51,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:25:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:25:51,588 INFO L264 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-18 23:25:51,589 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:25:51,625 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 23:25:51,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:25:51,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2019-12-18 23:25:51,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608102554] [2019-12-18 23:25:51,626 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-18 23:25:51,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:25:51,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-18 23:25:51,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2019-12-18 23:25:51,627 INFO L87 Difference]: Start difference. First operand 116177 states and 549793 transitions. Second operand 10 states. [2019-12-18 23:25:52,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:25:52,298 INFO L93 Difference]: Finished difference Result 116113 states and 549521 transitions. [2019-12-18 23:25:52,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-18 23:25:52,298 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2019-12-18 23:25:52,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:25:52,658 INFO L225 Difference]: With dead ends: 116113 [2019-12-18 23:25:52,659 INFO L226 Difference]: Without dead ends: 116113 [2019-12-18 23:25:52,659 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2019-12-18 23:26:00,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116113 states. [2019-12-18 23:26:01,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116113 to 116113. [2019-12-18 23:26:01,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116113 states. [2019-12-18 23:26:03,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116113 states to 116113 states and 549521 transitions. [2019-12-18 23:26:03,104 INFO L78 Accepts]: Start accepts. Automaton has 116113 states and 549521 transitions. Word has length 24 [2019-12-18 23:26:03,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:26:03,104 INFO L462 AbstractCegarLoop]: Abstraction has 116113 states and 549521 transitions. [2019-12-18 23:26:03,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-18 23:26:03,104 INFO L276 IsEmpty]: Start isEmpty. Operand 116113 states and 549521 transitions. [2019-12-18 23:26:03,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-18 23:26:03,120 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:26:03,120 INFO L411 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:26:03,323 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:26:03,324 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:26:03,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:26:03,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1095808649, now seen corresponding path program 1 times [2019-12-18 23:26:03,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:26:03,325 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85411802] [2019-12-18 23:26:03,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:26:03,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 23:26:03,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 23:26:03,358 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 23:26:03,358 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 23:26:03,358 WARN L364 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 23:26:03,358 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2019-12-18 23:26:03,368 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,369 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,369 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,369 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,369 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,369 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,369 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,370 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,370 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,370 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,370 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,370 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,370 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,370 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,371 WARN L315 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,371 WARN L315 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,371 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,371 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,371 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,371 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,371 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,371 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,372 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,372 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,372 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,372 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,372 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,372 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,372 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,373 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,373 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,373 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,373 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,373 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,373 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,373 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,374 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,374 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,374 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,374 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,374 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,374 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,375 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,375 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,375 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,375 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,375 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,375 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,375 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,376 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,376 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,376 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,376 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,376 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,377 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,378 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,378 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,378 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,378 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,379 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,379 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,379 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,380 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,380 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,381 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,381 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,381 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,381 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,382 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,383 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,383 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,383 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,383 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,383 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,385 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,385 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,385 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,385 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,385 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,387 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,387 WARN L315 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,387 WARN L315 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,387 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,387 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:26:03,393 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 23:26:03,393 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 23:26:03,393 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 23:26:03,394 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 23:26:03,394 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 23:26:03,394 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 23:26:03,394 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 23:26:03,394 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 23:26:03,394 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 23:26:03,395 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 108 transitions [2019-12-18 23:26:03,395 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 111 places, 108 transitions [2019-12-18 23:26:04,220 INFO L126 PetriNetUnfolder]: 848/4541 cut-off events. [2019-12-18 23:26:04,221 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:26:04,293 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5039 conditions, 4541 events. 848/4541 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 38159 event pairs. 736/4493 useless extension candidates. Maximal degree in co-relation 2504. Up to 448 conditions per place. [2019-12-18 23:26:04,458 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 111 places, 108 transitions [2019-12-18 23:26:05,261 INFO L126 PetriNetUnfolder]: 848/4541 cut-off events. [2019-12-18 23:26:05,261 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:26:05,314 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5039 conditions, 4541 events. 848/4541 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 38159 event pairs. 736/4493 useless extension candidates. Maximal degree in co-relation 2504. Up to 448 conditions per place. [2019-12-18 23:26:05,398 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 4550 [2019-12-18 23:26:05,398 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 23:26:06,690 WARN L192 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2019-12-18 23:26:07,278 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-12-18 23:26:07,359 INFO L206 etLargeBlockEncoding]: Checked pairs total: 11010 [2019-12-18 23:26:07,359 INFO L214 etLargeBlockEncoding]: Total number of compositions: 65 [2019-12-18 23:26:07,359 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 48 transitions Received shutdown request... [2019-12-18 23:28:04,249 WARN L527 AbstractCegarLoop]: Verification canceled [2019-12-18 23:28:04,252 WARN L227 ceAbstractionStarter]: Timeout [2019-12-18 23:28:04,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 11:28:04 BasicIcfg [2019-12-18 23:28:04,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 23:28:04,253 INFO L168 Benchmark]: Toolchain (without parser) took 232392.39 ms. Allocated memory was 143.1 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 99.8 MB in the beginning and 1.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 3.6 GB. Max. memory is 7.1 GB. [2019-12-18 23:28:04,254 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 143.1 MB. Free memory is still 119.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-12-18 23:28:04,254 INFO L168 Benchmark]: CACSL2BoogieTranslator took 660.70 ms. Allocated memory was 143.1 MB in the beginning and 200.8 MB in the end (delta: 57.7 MB). Free memory was 99.8 MB in the beginning and 157.1 MB in the end (delta: -57.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2019-12-18 23:28:04,255 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.36 ms. Allocated memory is still 200.8 MB. Free memory was 157.1 MB in the beginning and 155.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-12-18 23:28:04,255 INFO L168 Benchmark]: Boogie Preprocessor took 42.35 ms. Allocated memory is still 200.8 MB. Free memory was 155.0 MB in the beginning and 154.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 7.1 GB. [2019-12-18 23:28:04,256 INFO L168 Benchmark]: RCFGBuilder took 476.22 ms. Allocated memory is still 200.8 MB. Free memory was 154.0 MB in the beginning and 132.4 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2019-12-18 23:28:04,256 INFO L168 Benchmark]: TraceAbstraction took 231157.18 ms. Allocated memory was 200.8 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 131.3 MB in the beginning and 1.7 GB in the end (delta: -1.5 GB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2019-12-18 23:28:04,259 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 143.1 MB. Free memory is still 119.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 660.70 ms. Allocated memory was 143.1 MB in the beginning and 200.8 MB in the end (delta: 57.7 MB). Free memory was 99.8 MB in the beginning and 157.1 MB in the end (delta: -57.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.36 ms. Allocated memory is still 200.8 MB. Free memory was 157.1 MB in the beginning and 155.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.35 ms. Allocated memory is still 200.8 MB. Free memory was 155.0 MB in the beginning and 154.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 476.22 ms. Allocated memory is still 200.8 MB. Free memory was 154.0 MB in the beginning and 132.4 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231157.18 ms. Allocated memory was 200.8 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 131.3 MB in the beginning and 1.7 GB in the end (delta: -1.5 GB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 63 ProgramPointsBefore, 14 ProgramPointsAfterwards, 66 TransitionsBefore, 14 TransitionsAfterwards, 370 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 4 ChoiceCompositions, 183 VarBasedMoverChecksPositive, 4 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 289 CheckedPairsTotal, 56 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 71 ProgramPointsBefore, 24 ProgramPointsAfterwards, 73 TransitionsBefore, 23 TransitionsAfterwards, 900 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 4 ChoiceCompositions, 450 VarBasedMoverChecksPositive, 9 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1597 CheckedPairsTotal, 55 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 79 ProgramPointsBefore, 30 ProgramPointsAfterwards, 80 TransitionsBefore, 28 TransitionsAfterwards, 1470 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 4 ChoiceCompositions, 746 VarBasedMoverChecksPositive, 14 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2828 CheckedPairsTotal, 56 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 87 ProgramPointsBefore, 36 ProgramPointsAfterwards, 87 TransitionsBefore, 33 TransitionsAfterwards, 2120 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 4 ChoiceCompositions, 1032 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 3986 CheckedPairsTotal, 59 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 95 ProgramPointsBefore, 42 ProgramPointsAfterwards, 94 TransitionsBefore, 38 TransitionsAfterwards, 2850 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 4 ChoiceCompositions, 1370 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 6149 CheckedPairsTotal, 60 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.1s, 103 ProgramPointsBefore, 48 ProgramPointsAfterwards, 101 TransitionsBefore, 43 TransitionsAfterwards, 3660 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 4 ChoiceCompositions, 1666 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 7553 CheckedPairsTotal, 62 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 3.9s, 111 ProgramPointsBefore, 54 ProgramPointsAfterwards, 108 TransitionsBefore, 48 TransitionsAfterwards, 4550 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 4 ChoiceCompositions, 2181 VarBasedMoverChecksPositive, 34 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 11010 CheckedPairsTotal, 65 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 675]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 675). Cancelled while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 54 places, 48 transitions. Already constructed 262167 states. Currently 34708 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 60 locations, 1 error locations. Result: TIMEOUT, OverallTime: 120.8s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown