/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-MCR.epf -i ../../../trunk/examples/svcomp/pthread-ext/15_dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 15:17:57,052 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 15:17:57,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 15:17:57,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 15:17:57,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 15:17:57,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 15:17:57,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 15:17:57,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 15:17:57,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 15:17:57,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 15:17:57,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 15:17:57,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 15:17:57,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 15:17:57,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 15:17:57,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 15:17:57,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 15:17:57,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 15:17:57,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 15:17:57,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 15:17:57,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 15:17:57,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 15:17:57,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 15:17:57,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 15:17:57,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 15:17:57,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-27 15:17:57,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 15:17:57,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 15:17:57,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 15:17:57,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 15:17:57,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 15:17:57,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 15:17:57,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 15:17:57,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 15:17:57,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 15:17:57,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 15:17:57,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 15:17:57,116 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-MCR.epf [2019-12-27 15:17:57,130 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 15:17:57,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 15:17:57,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 15:17:57,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 15:17:57,132 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 15:17:57,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 15:17:57,132 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 15:17:57,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 15:17:57,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 15:17:57,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 15:17:57,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 15:17:57,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 15:17:57,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 15:17:57,133 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 15:17:57,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 15:17:57,134 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 15:17:57,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 15:17:57,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 15:17:57,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 15:17:57,135 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 15:17:57,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 15:17:57,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 15:17:57,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 15:17:57,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 15:17:57,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 15:17:57,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 15:17:57,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 15:17:57,136 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2019-12-27 15:17:57,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 15:17:57,137 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2019-12-27 15:17:57,137 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 15:17:57,404 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 15:17:57,420 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 15:17:57,426 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 15:17:57,429 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 15:17:57,429 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 15:17:57,432 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/15_dekker.i [2019-12-27 15:17:57,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4f91be6d/d63cd4556757420b84b8d1acfc2d579a/FLAG25dee0e31 [2019-12-27 15:17:58,020 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 15:17:58,021 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/15_dekker.i [2019-12-27 15:17:58,035 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4f91be6d/d63cd4556757420b84b8d1acfc2d579a/FLAG25dee0e31 [2019-12-27 15:17:58,333 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4f91be6d/d63cd4556757420b84b8d1acfc2d579a [2019-12-27 15:17:58,343 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 15:17:58,344 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 15:17:58,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 15:17:58,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 15:17:58,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 15:17:58,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 03:17:58" (1/1) ... [2019-12-27 15:17:58,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bdc98f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:17:58, skipping insertion in model container [2019-12-27 15:17:58,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 03:17:58" (1/1) ... [2019-12-27 15:17:58,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 15:17:58,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 15:17:58,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 15:17:58,861 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 15:17:58,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 15:17:59,019 INFO L208 MainTranslator]: Completed translation [2019-12-27 15:17:59,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:17:59 WrapperNode [2019-12-27 15:17:59,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 15:17:59,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 15:17:59,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 15:17:59,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 15:17:59,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:17:59" (1/1) ... [2019-12-27 15:17:59,065 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:17:59" (1/1) ... [2019-12-27 15:17:59,086 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 15:17:59,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 15:17:59,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 15:17:59,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 15:17:59,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:17:59" (1/1) ... [2019-12-27 15:17:59,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:17:59" (1/1) ... [2019-12-27 15:17:59,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:17:59" (1/1) ... [2019-12-27 15:17:59,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:17:59" (1/1) ... [2019-12-27 15:17:59,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:17:59" (1/1) ... [2019-12-27 15:17:59,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:17:59" (1/1) ... [2019-12-27 15:17:59,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:17:59" (1/1) ... [2019-12-27 15:17:59,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 15:17:59,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 15:17:59,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 15:17:59,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 15:17:59,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:17:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 15:17:59,182 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-12-27 15:17:59,183 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-12-27 15:17:59,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 15:17:59,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 15:17:59,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 15:17:59,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 15:17:59,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 15:17:59,186 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-27 15:17:59,599 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 15:17:59,599 INFO L287 CfgBuilder]: Removed 10 assume(true) statements. [2019-12-27 15:17:59,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 03:17:59 BoogieIcfgContainer [2019-12-27 15:17:59,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 15:17:59,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 15:17:59,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 15:17:59,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 15:17:59,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 03:17:58" (1/3) ... [2019-12-27 15:17:59,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1affc88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 03:17:59, skipping insertion in model container [2019-12-27 15:17:59,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:17:59" (2/3) ... [2019-12-27 15:17:59,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1affc88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 03:17:59, skipping insertion in model container [2019-12-27 15:17:59,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 03:17:59" (3/3) ... [2019-12-27 15:17:59,609 INFO L109 eAbstractionObserver]: Analyzing ICFG 15_dekker.i [2019-12-27 15:17:59,619 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 15:17:59,620 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 15:17:59,626 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-12-27 15:17:59,626 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 15:17:59,650 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:17:59,650 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:17:59,650 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:17:59,651 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:17:59,652 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:17:59,652 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:17:59,657 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:17:59,657 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:17:59,657 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:17:59,658 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:17:59,676 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-27 15:17:59,693 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 15:17:59,693 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 15:17:59,694 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 15:17:59,694 INFO L376 AbstractCegarLoop]: Backedges is MCR [2019-12-27 15:17:59,694 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 15:17:59,694 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 15:17:59,694 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 15:17:59,695 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 15:17:59,709 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 65 transitions [2019-12-27 15:17:59,711 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 57 places, 65 transitions [2019-12-27 15:17:59,754 INFO L132 PetriNetUnfolder]: 12/64 cut-off events. [2019-12-27 15:17:59,754 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 15:17:59,761 INFO L76 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 64 events. 12/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs. 0/50 useless extension candidates. Maximal degree in co-relation 52. Up to 3 conditions per place. [2019-12-27 15:17:59,765 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 57 places, 65 transitions [2019-12-27 15:17:59,784 INFO L132 PetriNetUnfolder]: 12/64 cut-off events. [2019-12-27 15:17:59,784 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 15:17:59,786 INFO L76 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 64 events. 12/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs. 0/50 useless extension candidates. Maximal degree in co-relation 52. Up to 3 conditions per place. [2019-12-27 15:17:59,789 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1302 [2019-12-27 15:17:59,791 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-27 15:18:00,816 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2789 [2019-12-27 15:18:00,816 INFO L214 etLargeBlockEncoding]: Total number of compositions: 39 [2019-12-27 15:18:00,820 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 26 places, 34 transitions [2019-12-27 15:18:00,842 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 134 states. [2019-12-27 15:18:00,844 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states. [2019-12-27 15:18:00,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-27 15:18:00,855 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 15:18:00,856 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-27 15:18:00,856 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 15:18:00,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 15:18:00,864 INFO L82 PathProgramCache]: Analyzing trace with hash 264070407, now seen corresponding path program 1 times [2019-12-27 15:18:00,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 15:18:00,878 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278108289] [2019-12-27 15:18:00,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 15:18:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 15:18:01,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 15:18:01,062 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278108289] [2019-12-27 15:18:01,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 15:18:01,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 15:18:01,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2044262849] [2019-12-27 15:18:01,066 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 15:18:01,070 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 15:18:01,080 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 6 states and 5 transitions. [2019-12-27 15:18:01,080 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 15:18:01,083 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 15:18:01,083 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-27 15:18:01,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 15:18:01,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-27 15:18:01,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-27 15:18:01,097 INFO L87 Difference]: Start difference. First operand 134 states. Second operand 2 states. [2019-12-27 15:18:01,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 15:18:01,110 INFO L93 Difference]: Finished difference Result 134 states and 312 transitions. [2019-12-27 15:18:01,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-27 15:18:01,112 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-12-27 15:18:01,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 15:18:01,125 INFO L225 Difference]: With dead ends: 134 [2019-12-27 15:18:01,125 INFO L226 Difference]: Without dead ends: 122 [2019-12-27 15:18:01,127 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-27 15:18:01,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2019-12-27 15:18:01,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2019-12-27 15:18:01,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2019-12-27 15:18:01,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 288 transitions. [2019-12-27 15:18:01,180 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 288 transitions. Word has length 5 [2019-12-27 15:18:01,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 15:18:01,181 INFO L462 AbstractCegarLoop]: Abstraction has 122 states and 288 transitions. [2019-12-27 15:18:01,182 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-27 15:18:01,182 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 288 transitions. [2019-12-27 15:18:01,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-27 15:18:01,183 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 15:18:01,183 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-27 15:18:01,183 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 15:18:01,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 15:18:01,184 INFO L82 PathProgramCache]: Analyzing trace with hash -403790346, now seen corresponding path program 1 times [2019-12-27 15:18:01,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 15:18:01,184 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512281090] [2019-12-27 15:18:01,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 15:18:01,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 15:18:01,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 15:18:01,273 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512281090] [2019-12-27 15:18:01,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 15:18:01,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 15:18:01,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [471091865] [2019-12-27 15:18:01,273 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 15:18:01,274 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 15:18:01,275 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 7 states and 6 transitions. [2019-12-27 15:18:01,277 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 15:18:01,277 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 15:18:01,279 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 15:18:01,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 15:18:01,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 15:18:01,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 15:18:01,280 INFO L87 Difference]: Start difference. First operand 122 states and 288 transitions. Second operand 3 states. [2019-12-27 15:18:01,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 15:18:01,326 INFO L93 Difference]: Finished difference Result 128 states and 286 transitions. [2019-12-27 15:18:01,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 15:18:01,328 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-12-27 15:18:01,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 15:18:01,330 INFO L225 Difference]: With dead ends: 128 [2019-12-27 15:18:01,330 INFO L226 Difference]: Without dead ends: 100 [2019-12-27 15:18:01,331 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 [2019-12-27 15:18:01,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2019-12-27 15:18:01,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 94. [2019-12-27 15:18:01,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2019-12-27 15:18:01,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 216 transitions. [2019-12-27 15:18:01,350 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 216 transitions. Word has length 6 [2019-12-27 15:18:01,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 15:18:01,350 INFO L462 AbstractCegarLoop]: Abstraction has 94 states and 216 transitions. [2019-12-27 15:18:01,350 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 15:18:01,350 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 216 transitions. [2019-12-27 15:18:01,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-27 15:18:01,351 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 15:18:01,352 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-27 15:18:01,352 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 15:18:01,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 15:18:01,352 INFO L82 PathProgramCache]: Analyzing trace with hash -404462025, now seen corresponding path program 1 times [2019-12-27 15:18:01,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 15:18:01,353 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847780028] [2019-12-27 15:18:01,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 15:18:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 15:18:01,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 15:18:01,400 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847780028] [2019-12-27 15:18:01,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 15:18:01,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 15:18:01,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [955226909] [2019-12-27 15:18:01,401 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 15:18:01,402 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 15:18:01,402 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 7 states and 6 transitions. [2019-12-27 15:18:01,403 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 15:18:01,403 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 15:18:01,403 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 15:18:01,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 15:18:01,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 15:18:01,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 15:18:01,407 INFO L87 Difference]: Start difference. First operand 94 states and 216 transitions. Second operand 3 states. [2019-12-27 15:18:01,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 15:18:01,433 INFO L93 Difference]: Finished difference Result 89 states and 198 transitions. [2019-12-27 15:18:01,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 15:18:01,436 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-12-27 15:18:01,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 15:18:01,437 INFO L225 Difference]: With dead ends: 89 [2019-12-27 15:18:01,438 INFO L226 Difference]: Without dead ends: 68 [2019-12-27 15:18:01,438 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 [2019-12-27 15:18:01,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-12-27 15:18:01,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2019-12-27 15:18:01,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-12-27 15:18:01,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 151 transitions. [2019-12-27 15:18:01,456 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 151 transitions. Word has length 6 [2019-12-27 15:18:01,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 15:18:01,456 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 151 transitions. [2019-12-27 15:18:01,456 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 15:18:01,456 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 151 transitions. [2019-12-27 15:18:01,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-27 15:18:01,459 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 15:18:01,459 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 15:18:01,459 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 15:18:01,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 15:18:01,460 INFO L82 PathProgramCache]: Analyzing trace with hash -2065038419, now seen corresponding path program 1 times [2019-12-27 15:18:01,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 15:18:01,460 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493742666] [2019-12-27 15:18:01,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 15:18:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 15:18:01,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 15:18:01,513 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493742666] [2019-12-27 15:18:01,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 15:18:01,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 15:18:01,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1967837470] [2019-12-27 15:18:01,514 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 15:18:01,515 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 15:18:01,516 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 15 states and 18 transitions. [2019-12-27 15:18:01,516 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 15:18:01,517 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 15:18:01,518 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 15:18:01,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 15:18:01,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 15:18:01,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 15:18:01,519 INFO L87 Difference]: Start difference. First operand 68 states and 151 transitions. Second operand 3 states. [2019-12-27 15:18:01,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 15:18:01,551 INFO L93 Difference]: Finished difference Result 68 states and 146 transitions. [2019-12-27 15:18:01,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 15:18:01,553 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-27 15:18:01,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 15:18:01,554 INFO L225 Difference]: With dead ends: 68 [2019-12-27 15:18:01,554 INFO L226 Difference]: Without dead ends: 58 [2019-12-27 15:18:01,555 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 15:18:01,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-12-27 15:18:01,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2019-12-27 15:18:01,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-12-27 15:18:01,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 122 transitions. [2019-12-27 15:18:01,560 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 122 transitions. Word has length 9 [2019-12-27 15:18:01,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 15:18:01,561 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 122 transitions. [2019-12-27 15:18:01,561 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 15:18:01,561 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 122 transitions. [2019-12-27 15:18:01,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-27 15:18:01,562 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 15:18:01,562 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 15:18:01,563 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 15:18:01,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 15:18:01,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1895831409, now seen corresponding path program 2 times [2019-12-27 15:18:01,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 15:18:01,564 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580800244] [2019-12-27 15:18:01,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 15:18:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 15:18:01,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 15:18:01,625 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580800244] [2019-12-27 15:18:01,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 15:18:01,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 15:18:01,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1541352454] [2019-12-27 15:18:01,626 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 15:18:01,627 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 15:18:01,628 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 13 states and 14 transitions. [2019-12-27 15:18:01,628 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 15:18:01,632 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 1 times. [2019-12-27 15:18:01,632 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 15:18:01,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 15:18:01,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 15:18:01,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 15:18:01,634 INFO L87 Difference]: Start difference. First operand 58 states and 122 transitions. Second operand 3 states. [2019-12-27 15:18:01,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 15:18:01,648 INFO L93 Difference]: Finished difference Result 37 states and 93 transitions. [2019-12-27 15:18:01,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 15:18:01,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-27 15:18:01,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 15:18:01,649 INFO L225 Difference]: With dead ends: 37 [2019-12-27 15:18:01,650 INFO L226 Difference]: Without dead ends: 0 [2019-12-27 15:18:01,652 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 15:18:01,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-27 15:18:01,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-27 15:18:01,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-27 15:18:01,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-27 15:18:01,655 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2019-12-27 15:18:01,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 15:18:01,655 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-27 15:18:01,655 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 15:18:01,656 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-27 15:18:01,656 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-27 15:18:01,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 03:18:01 BasicIcfg [2019-12-27 15:18:01,665 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 15:18:01,670 INFO L168 Benchmark]: Toolchain (without parser) took 3323.25 ms. Allocated memory was 138.9 MB in the beginning and 235.9 MB in the end (delta: 97.0 MB). Free memory was 102.5 MB in the beginning and 88.5 MB in the end (delta: 14.1 MB). Peak memory consumption was 111.1 MB. Max. memory is 7.1 GB. [2019-12-27 15:18:01,671 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-12-27 15:18:01,672 INFO L168 Benchmark]: CACSL2BoogieTranslator took 675.43 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 102.1 MB in the beginning and 161.0 MB in the end (delta: -58.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2019-12-27 15:18:01,673 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.19 ms. Allocated memory is still 203.4 MB. Free memory was 161.0 MB in the beginning and 159.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-27 15:18:01,674 INFO L168 Benchmark]: Boogie Preprocessor took 28.19 ms. Allocated memory is still 203.4 MB. Free memory was 159.0 MB in the beginning and 157.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-27 15:18:01,675 INFO L168 Benchmark]: RCFGBuilder took 485.44 ms. Allocated memory is still 203.4 MB. Free memory was 157.6 MB in the beginning and 137.9 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2019-12-27 15:18:01,676 INFO L168 Benchmark]: TraceAbstraction took 2063.91 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 137.3 MB in the beginning and 88.5 MB in the end (delta: 48.8 MB). Peak memory consumption was 81.3 MB. Max. memory is 7.1 GB. [2019-12-27 15:18:01,680 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 675.43 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 102.1 MB in the beginning and 161.0 MB in the end (delta: -58.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 65.19 ms. Allocated memory is still 203.4 MB. Free memory was 161.0 MB in the beginning and 159.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.19 ms. Allocated memory is still 203.4 MB. Free memory was 159.0 MB in the beginning and 157.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 485.44 ms. Allocated memory is still 203.4 MB. Free memory was 157.6 MB in the beginning and 137.9 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2063.91 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 137.3 MB in the beginning and 88.5 MB in the end (delta: 48.8 MB). Peak memory consumption was 81.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.1s, 57 ProgramPointsBefore, 26 ProgramPointsAfterwards, 65 TransitionsBefore, 34 TransitionsAfterwards, 1302 CoEnabledTransitionPairs, 6 FixpointIterations, 10 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 649 VarBasedMoverChecksPositive, 46 VarBasedMoverChecksNegative, 26 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2789 CheckedPairsTotal, 39 TotalNumberOfCompositions - PositiveResult [Line: 686]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 701]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 54 locations, 2 error locations. Result: SAFE, OverallTime: 1.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 156 SDtfs, 66 SDslu, 49 SDs, 0 SdLazy, 28 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 310 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...