/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/AutomizerBplInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-MCR.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_10.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d9e330d [2020-02-11 01:06:58,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-02-11 01:06:58,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-02-11 01:06:58,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-02-11 01:06:58,836 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-02-11 01:06:58,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-02-11 01:06:58,840 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-02-11 01:06:58,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-02-11 01:06:58,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-02-11 01:06:58,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-02-11 01:06:58,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-02-11 01:06:58,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-02-11 01:06:58,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-02-11 01:06:58,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-02-11 01:06:58,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-02-11 01:06:58,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-02-11 01:06:58,864 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-02-11 01:06:58,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-02-11 01:06:58,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-02-11 01:06:58,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-02-11 01:06:58,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-02-11 01:06:58,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-02-11 01:06:58,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-02-11 01:06:58,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-02-11 01:06:58,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-02-11 01:06:58,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-02-11 01:06:58,884 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-02-11 01:06:58,885 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-02-11 01:06:58,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-02-11 01:06:58,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-02-11 01:06:58,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-02-11 01:06:58,891 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-02-11 01:06:58,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-02-11 01:06:58,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-02-11 01:06:58,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-02-11 01:06:58,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-02-11 01:06:58,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-02-11 01:06:58,900 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-02-11 01:06:58,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-02-11 01:06:58,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-02-11 01:06:58,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-02-11 01:06:58,904 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-PN-NoLbe-MCR.epf [2020-02-11 01:06:58,923 INFO L113 SettingsManager]: Loading preferences was successful [2020-02-11 01:06:58,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-02-11 01:06:58,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-02-11 01:06:58,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-02-11 01:06:58,925 INFO L138 SettingsManager]: * Use SBE=true [2020-02-11 01:06:58,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-02-11 01:06:58,926 INFO L138 SettingsManager]: * sizeof long=4 [2020-02-11 01:06:58,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-02-11 01:06:58,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-02-11 01:06:58,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-02-11 01:06:58,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-02-11 01:06:58,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-02-11 01:06:58,927 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-02-11 01:06:58,927 INFO L138 SettingsManager]: * sizeof long double=12 [2020-02-11 01:06:58,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-02-11 01:06:58,927 INFO L138 SettingsManager]: * Use constant arrays=true [2020-02-11 01:06:58,928 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-02-11 01:06:58,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-02-11 01:06:58,928 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-02-11 01:06:58,928 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-02-11 01:06:58,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-02-11 01:06:58,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-02-11 01:06:58,929 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-02-11 01:06:58,929 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-02-11 01:06:58,929 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-02-11 01:06:58,929 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-02-11 01:06:58,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-02-11 01:06:58,930 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-02-11 01:06:58,930 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-02-11 01:06:58,930 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-02-11 01:06:58,930 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-02-11 01:06:58,930 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-02-11 01:06:59,209 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-02-11 01:06:59,226 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-02-11 01:06:59,230 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-02-11 01:06:59,231 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-02-11 01:06:59,232 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-02-11 01:06:59,233 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_10.bpl [2020-02-11 01:06:59,233 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_10.bpl' [2020-02-11 01:06:59,267 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-02-11 01:06:59,270 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-02-11 01:06:59,271 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-02-11 01:06:59,271 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-02-11 01:06:59,271 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-02-11 01:06:59,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:06:59" (1/1) ... [2020-02-11 01:06:59,297 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:06:59" (1/1) ... [2020-02-11 01:06:59,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-02-11 01:06:59,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-02-11 01:06:59,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-02-11 01:06:59,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-02-11 01:06:59,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:06:59" (1/1) ... [2020-02-11 01:06:59,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:06:59" (1/1) ... [2020-02-11 01:06:59,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:06:59" (1/1) ... [2020-02-11 01:06:59,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:06:59" (1/1) ... [2020-02-11 01:06:59,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:06:59" (1/1) ... [2020-02-11 01:06:59,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:06:59" (1/1) ... [2020-02-11 01:06:59,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:06:59" (1/1) ... [2020-02-11 01:06:59,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-02-11 01:06:59,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-02-11 01:06:59,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-02-11 01:06:59,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-02-11 01:06:59,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:06:59" (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 [2020-02-11 01:06:59,396 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-02-11 01:06:59,396 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-02-11 01:06:59,397 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-02-11 01:06:59,397 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-02-11 01:06:59,397 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-02-11 01:06:59,397 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-02-11 01:06:59,397 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-02-11 01:06:59,398 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-02-11 01:06:59,398 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-02-11 01:06:59,398 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-02-11 01:06:59,398 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-02-11 01:06:59,398 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-02-11 01:06:59,399 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-02-11 01:06:59,399 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-02-11 01:06:59,399 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-02-11 01:06:59,399 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2020-02-11 01:06:59,399 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2020-02-11 01:06:59,400 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2020-02-11 01:06:59,400 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-02-11 01:06:59,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-02-11 01:06:59,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-02-11 01:06:59,400 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2020-02-11 01:06:59,400 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2020-02-11 01:06:59,401 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2020-02-11 01:06:59,401 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2020-02-11 01:06:59,401 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2020-02-11 01:06:59,401 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2020-02-11 01:06:59,401 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2020-02-11 01:06:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2020-02-11 01:06:59,402 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2020-02-11 01:06:59,402 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2020-02-11 01:06:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2020-02-11 01:06:59,402 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2020-02-11 01:06:59,403 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-02-11 01:06:59,692 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-02-11 01:06:59,693 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-02-11 01:06:59,697 INFO L202 PluginConnector]: Adding new model example_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.02 01:06:59 BoogieIcfgContainer [2020-02-11 01:06:59,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-02-11 01:06:59,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-02-11 01:06:59,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-02-11 01:06:59,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-02-11 01:06:59,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:06:59" (1/2) ... [2020-02-11 01:06:59,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@586d3a6a and model type example_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.02 01:06:59, skipping insertion in model container [2020-02-11 01:06:59,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.02 01:06:59" (2/2) ... [2020-02-11 01:06:59,708 INFO L109 eAbstractionObserver]: Analyzing ICFG example_10.bpl [2020-02-11 01:06:59,718 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-02-11 01:06:59,726 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-02-11 01:06:59,727 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-02-11 01:06:59,951 INFO L251 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-02-11 01:06:59,969 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-02-11 01:06:59,970 INFO L376 AbstractCegarLoop]: Hoare is false [2020-02-11 01:06:59,970 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-02-11 01:06:59,970 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-02-11 01:06:59,970 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-02-11 01:06:59,970 INFO L380 AbstractCegarLoop]: Difference is false [2020-02-11 01:06:59,970 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-02-11 01:06:59,971 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-02-11 01:06:59,987 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 84 places, 143 transitions [2020-02-11 01:07:03,148 INFO L129 PetriNetUnfolder]: 4097/5153 cut-off events. [2020-02-11 01:07:03,149 INFO L130 PetriNetUnfolder]: For 5120/5120 co-relation queries the response was YES. [2020-02-11 01:07:03,226 INFO L76 FinitePrefix]: Finished finitePrefix Result has 10304 conditions, 5153 events. 4097/5153 cut-off events. For 5120/5120 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 20915 event pairs. 0/5152 useless extension candidates. Maximal degree in co-relation 4655. Up to 1260 conditions per place. [2020-02-11 01:07:03,226 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 143 transitions [2020-02-11 01:07:03,389 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 131 transitions [2020-02-11 01:07:06,543 INFO L129 PetriNetUnfolder]: 4097/5150 cut-off events. [2020-02-11 01:07:06,543 INFO L130 PetriNetUnfolder]: For 5120/5120 co-relation queries the response was YES. [2020-02-11 01:07:06,544 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-11 01:07:06,545 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-11 01:07:06,545 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-11 01:07:06,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-11 01:07:06,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1388342517, now seen corresponding path program 1 times [2020-02-11 01:07:06,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-11 01:07:06,563 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343254605] [2020-02-11 01:07:06,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-11 01:07:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-11 01:07:06,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-11 01:07:06,783 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343254605] [2020-02-11 01:07:06,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-11 01:07:06,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-11 01:07:06,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [73162272] [2020-02-11 01:07:06,786 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-11 01:07:06,806 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-11 01:07:43,599 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 118098 states and 787321 transitions. [2020-02-11 01:07:43,600 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-11 01:07:44,358 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 10 times. [2020-02-11 01:07:44,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-11 01:07:44,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-11 01:07:44,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-11 01:07:44,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-11 01:07:44,387 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 143 [2020-02-11 01:07:44,389 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 131 transitions. Second operand 3 states. [2020-02-11 01:07:44,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-11 01:07:44,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 143 [2020-02-11 01:07:44,392 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-11 01:07:48,672 INFO L129 PetriNetUnfolder]: 3764/4772 cut-off events. [2020-02-11 01:07:48,673 INFO L130 PetriNetUnfolder]: For 5812/5812 co-relation queries the response was YES. [2020-02-11 01:07:48,732 INFO L76 FinitePrefix]: Finished finitePrefix Result has 10012 conditions, 4772 events. 3764/4772 cut-off events. For 5812/5812 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 21802 event pairs. 46/4818 useless extension candidates. Maximal degree in co-relation 4728. Up to 1260 conditions per place. [2020-02-11 01:07:48,864 INFO L145 encePairwiseOnDemand]: 139/143 looper letters, 7 selfloop transitions, 1 changer transitions 0/128 dead transitions. [2020-02-11 01:07:48,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-11 01:07:48,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-11 01:07:48,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2020-02-11 01:07:48,879 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9487179487179487 [2020-02-11 01:07:48,880 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2020-02-11 01:07:48,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2020-02-11 01:07:48,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-11 01:07:48,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2020-02-11 01:07:48,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-11 01:07:48,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-11 01:07:48,901 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-11 01:07:48,903 INFO L178 Difference]: Start difference. First operand has 72 places, 131 transitions. Second operand 3 states and 407 transitions. [2020-02-11 01:07:48,907 INFO L206 Difference]: Finished difference. Result has 74 places, 128 transitions [2020-02-11 01:07:48,910 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=579, PETRI_PLACES=74, PETRI_TRANSITIONS=128} [2020-02-11 01:07:48,911 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 74 places, 128 transitions [2020-02-11 01:07:51,132 INFO L129 PetriNetUnfolder]: 3764/4772 cut-off events. [2020-02-11 01:07:51,132 INFO L130 PetriNetUnfolder]: For 4742/4742 co-relation queries the response was YES. [2020-02-11 01:07:51,182 INFO L76 FinitePrefix]: Finished finitePrefix Result has 9546 conditions, 4772 events. 3764/4772 cut-off events. For 4742/4742 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 19083 event pairs. 0/4772 useless extension candidates. Maximal degree in co-relation 9521. Up to 1260 conditions per place. [2020-02-11 01:07:51,183 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 128 transitions [2020-02-11 01:07:51,299 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 128 transitions [2020-02-11 01:07:51,301 INFO L479 AbstractCegarLoop]: Abstraction has has 74 places, 128 transitions [2020-02-11 01:07:51,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-11 01:07:53,863 INFO L129 PetriNetUnfolder]: 3764/4771 cut-off events. [2020-02-11 01:07:53,863 INFO L130 PetriNetUnfolder]: For 4742/4742 co-relation queries the response was YES. [2020-02-11 01:07:53,864 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-11 01:07:53,864 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-11 01:07:53,864 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-11 01:07:53,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-11 01:07:53,865 INFO L82 PathProgramCache]: Analyzing trace with hash -385305559, now seen corresponding path program 1 times [2020-02-11 01:07:53,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-11 01:07:53,865 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137105091] [2020-02-11 01:07:53,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-11 01:07:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-11 01:07:53,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-11 01:07:53,908 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137105091] [2020-02-11 01:07:53,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-11 01:07:53,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-11 01:07:53,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1548108700] [2020-02-11 01:07:53,909 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-11 01:07:53,914 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-11 01:08:31,145 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 118098 states and 787321 transitions. [2020-02-11 01:08:31,146 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-11 01:08:31,934 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 12 times. [2020-02-11 01:08:31,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-11 01:08:31,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-11 01:08:31,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-11 01:08:31,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-11 01:08:31,947 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 143 [2020-02-11 01:08:31,948 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 128 transitions. Second operand 3 states. [2020-02-11 01:08:31,948 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-11 01:08:31,948 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 143 [2020-02-11 01:08:31,949 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-11 01:08:33,860 INFO L129 PetriNetUnfolder]: 2398/3159 cut-off events. [2020-02-11 01:08:33,860 INFO L130 PetriNetUnfolder]: For 4299/4299 co-relation queries the response was YES. [2020-02-11 01:08:33,884 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6578 conditions, 3159 events. 2398/3159 cut-off events. For 4299/4299 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 14774 event pairs. 219/3378 useless extension candidates. Maximal degree in co-relation 6552. Up to 840 conditions per place. [2020-02-11 01:08:33,958 INFO L145 encePairwiseOnDemand]: 137/143 looper letters, 5 selfloop transitions, 1 changer transitions 0/123 dead transitions. [2020-02-11 01:08:33,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-11 01:08:33,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-11 01:08:33,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2020-02-11 01:08:33,960 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9487179487179487 [2020-02-11 01:08:33,960 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2020-02-11 01:08:33,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2020-02-11 01:08:33,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-11 01:08:33,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2020-02-11 01:08:33,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-11 01:08:33,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-11 01:08:33,963 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-11 01:08:33,963 INFO L178 Difference]: Start difference. First operand has 74 places, 128 transitions. Second operand 3 states and 407 transitions. [2020-02-11 01:08:33,964 INFO L206 Difference]: Finished difference. Result has 76 places, 123 transitions [2020-02-11 01:08:33,965 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=556, PETRI_PLACES=76, PETRI_TRANSITIONS=123} [2020-02-11 01:08:33,965 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 76 places, 123 transitions [2020-02-11 01:08:35,132 INFO L129 PetriNetUnfolder]: 2398/3159 cut-off events. [2020-02-11 01:08:35,132 INFO L130 PetriNetUnfolder]: For 3130/3130 co-relation queries the response was YES. [2020-02-11 01:08:35,155 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6322 conditions, 3159 events. 2398/3159 cut-off events. For 3130/3130 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 12712 event pairs. 0/3159 useless extension candidates. Maximal degree in co-relation 6296. Up to 840 conditions per place. [2020-02-11 01:08:35,155 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 123 transitions [2020-02-11 01:08:35,197 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 123 transitions [2020-02-11 01:08:35,198 INFO L479 AbstractCegarLoop]: Abstraction has has 76 places, 123 transitions [2020-02-11 01:08:35,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-11 01:08:35,985 INFO L129 PetriNetUnfolder]: 2398/3158 cut-off events. [2020-02-11 01:08:35,986 INFO L130 PetriNetUnfolder]: For 3130/3130 co-relation queries the response was YES. [2020-02-11 01:08:35,986 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-11 01:08:35,986 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-11 01:08:35,986 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-11 01:08:35,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-11 01:08:35,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1536808539, now seen corresponding path program 1 times [2020-02-11 01:08:35,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-11 01:08:35,987 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241190582] [2020-02-11 01:08:35,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-11 01:08:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-11 01:08:36,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-11 01:08:36,025 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241190582] [2020-02-11 01:08:36,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-11 01:08:36,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-11 01:08:36,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1852403035] [2020-02-11 01:08:36,026 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-11 01:08:36,030 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-11 01:09:10,727 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 118098 states and 787321 transitions. [2020-02-11 01:09:10,727 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-11 01:09:11,390 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 4 times. [2020-02-11 01:09:11,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-11 01:09:11,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-11 01:09:11,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-11 01:09:11,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-11 01:09:11,392 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 143 [2020-02-11 01:09:11,393 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 123 transitions. Second operand 3 states. [2020-02-11 01:09:11,393 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-11 01:09:11,393 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 143 [2020-02-11 01:09:11,393 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-11 01:09:11,648 INFO L129 PetriNetUnfolder]: 928/1324 cut-off events. [2020-02-11 01:09:11,648 INFO L130 PetriNetUnfolder]: For 2210/2210 co-relation queries the response was YES. [2020-02-11 01:09:11,658 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2700 conditions, 1324 events. 928/1324 cut-off events. For 2210/2210 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5801 event pairs. 274/1598 useless extension candidates. Maximal degree in co-relation 2673. Up to 280 conditions per place. [2020-02-11 01:09:11,681 INFO L145 encePairwiseOnDemand]: 135/143 looper letters, 3 selfloop transitions, 1 changer transitions 0/116 dead transitions. [2020-02-11 01:09:11,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-11 01:09:11,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-11 01:09:11,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2020-02-11 01:09:11,682 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9487179487179487 [2020-02-11 01:09:11,682 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2020-02-11 01:09:11,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2020-02-11 01:09:11,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-11 01:09:11,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2020-02-11 01:09:11,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-11 01:09:11,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-11 01:09:11,685 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-11 01:09:11,685 INFO L178 Difference]: Start difference. First operand has 76 places, 123 transitions. Second operand 3 states and 407 transitions. [2020-02-11 01:09:11,686 INFO L206 Difference]: Finished difference. Result has 78 places, 116 transitions [2020-02-11 01:09:11,687 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=523, PETRI_PLACES=78, PETRI_TRANSITIONS=116} [2020-02-11 01:09:11,687 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 78 places, 116 transitions [2020-02-11 01:09:11,864 INFO L129 PetriNetUnfolder]: 928/1324 cut-off events. [2020-02-11 01:09:11,864 INFO L130 PetriNetUnfolder]: For 1296/1296 co-relation queries the response was YES. [2020-02-11 01:09:11,878 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2654 conditions, 1324 events. 928/1324 cut-off events. For 1296/1296 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5182 event pairs. 0/1324 useless extension candidates. Maximal degree in co-relation 2627. Up to 280 conditions per place. [2020-02-11 01:09:11,878 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 116 transitions [2020-02-11 01:09:11,898 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 116 transitions [2020-02-11 01:09:11,899 INFO L479 AbstractCegarLoop]: Abstraction has has 78 places, 116 transitions [2020-02-11 01:09:11,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-11 01:09:12,061 INFO L129 PetriNetUnfolder]: 928/1323 cut-off events. [2020-02-11 01:09:12,061 INFO L130 PetriNetUnfolder]: For 1296/1296 co-relation queries the response was YES. [2020-02-11 01:09:12,061 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-11 01:09:12,062 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-11 01:09:12,062 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-11 01:09:12,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-11 01:09:12,062 INFO L82 PathProgramCache]: Analyzing trace with hash -908415933, now seen corresponding path program 1 times [2020-02-11 01:09:12,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-11 01:09:12,063 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139573359] [2020-02-11 01:09:12,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-11 01:09:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-11 01:09:12,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-11 01:09:12,103 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139573359] [2020-02-11 01:09:12,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-11 01:09:12,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-11 01:09:12,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1635536905] [2020-02-11 01:09:12,103 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-11 01:09:12,107 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-11 01:09:40,827 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 118098 states and 787321 transitions. [2020-02-11 01:09:40,828 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-11 01:09:41,230 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 6 times. [2020-02-11 01:09:41,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-11 01:09:41,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-11 01:09:41,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-11 01:09:41,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-11 01:09:41,231 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 143 [2020-02-11 01:09:41,232 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 116 transitions. Second operand 3 states. [2020-02-11 01:09:41,232 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-11 01:09:41,232 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 143 [2020-02-11 01:09:41,232 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-11 01:09:41,359 INFO L129 PetriNetUnfolder]: 419/667 cut-off events. [2020-02-11 01:09:41,360 INFO L130 PetriNetUnfolder]: For 1026/1026 co-relation queries the response was YES. [2020-02-11 01:09:41,367 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1388 conditions, 667 events. 419/667 cut-off events. For 1026/1026 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2735 event pairs. 98/765 useless extension candidates. Maximal degree in co-relation 1360. Up to 108 conditions per place. [2020-02-11 01:09:41,382 INFO L145 encePairwiseOnDemand]: 136/143 looper letters, 4 selfloop transitions, 1 changer transitions 0/110 dead transitions. [2020-02-11 01:09:41,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-11 01:09:41,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-11 01:09:41,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2020-02-11 01:09:41,384 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9487179487179487 [2020-02-11 01:09:41,384 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2020-02-11 01:09:41,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2020-02-11 01:09:41,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-11 01:09:41,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2020-02-11 01:09:41,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-11 01:09:41,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-11 01:09:41,386 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-11 01:09:41,386 INFO L178 Difference]: Start difference. First operand has 78 places, 116 transitions. Second operand 3 states and 407 transitions. [2020-02-11 01:09:41,388 INFO L206 Difference]: Finished difference. Result has 80 places, 110 transitions [2020-02-11 01:09:41,389 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=495, PETRI_PLACES=80, PETRI_TRANSITIONS=110} [2020-02-11 01:09:41,389 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 80 places, 110 transitions [2020-02-11 01:09:41,484 INFO L129 PetriNetUnfolder]: 419/667 cut-off events. [2020-02-11 01:09:41,493 INFO L130 PetriNetUnfolder]: For 640/640 co-relation queries the response was YES. [2020-02-11 01:09:41,500 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1342 conditions, 667 events. 419/667 cut-off events. For 640/640 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2508 event pairs. 0/667 useless extension candidates. Maximal degree in co-relation 1314. Up to 108 conditions per place. [2020-02-11 01:09:41,501 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 110 transitions [2020-02-11 01:09:41,512 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 110 transitions [2020-02-11 01:09:41,512 INFO L479 AbstractCegarLoop]: Abstraction has has 80 places, 110 transitions [2020-02-11 01:09:41,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-11 01:09:41,589 INFO L129 PetriNetUnfolder]: 419/666 cut-off events. [2020-02-11 01:09:41,590 INFO L130 PetriNetUnfolder]: For 640/640 co-relation queries the response was YES. [2020-02-11 01:09:41,590 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-11 01:09:41,590 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-11 01:09:41,590 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-11 01:09:41,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-11 01:09:41,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1412889631, now seen corresponding path program 1 times [2020-02-11 01:09:41,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-11 01:09:41,591 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923324820] [2020-02-11 01:09:41,592 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-11 01:09:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-11 01:09:41,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-11 01:09:41,621 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923324820] [2020-02-11 01:09:41,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-11 01:09:41,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-11 01:09:41,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1544839074] [2020-02-11 01:09:41,622 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-11 01:09:41,626 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-11 01:10:12,136 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 118098 states and 787321 transitions. [2020-02-11 01:10:12,136 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-11 01:10:12,571 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 12 times. [2020-02-11 01:10:12,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-11 01:10:12,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-11 01:10:12,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-11 01:10:12,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-11 01:10:12,572 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 143 [2020-02-11 01:10:12,572 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 110 transitions. Second operand 3 states. [2020-02-11 01:10:12,572 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-11 01:10:12,572 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 143 [2020-02-11 01:10:12,572 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-11 01:10:12,708 INFO L129 PetriNetUnfolder]: 414/661 cut-off events. [2020-02-11 01:10:12,709 INFO L130 PetriNetUnfolder]: For 780/780 co-relation queries the response was YES. [2020-02-11 01:10:12,716 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1403 conditions, 661 events. 414/661 cut-off events. For 780/780 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2721 event pairs. 1/662 useless extension candidates. Maximal degree in co-relation 1373. Up to 108 conditions per place. [2020-02-11 01:10:12,731 INFO L145 encePairwiseOnDemand]: 141/143 looper letters, 9 selfloop transitions, 1 changer transitions 0/109 dead transitions. [2020-02-11 01:10:12,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-11 01:10:12,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-11 01:10:12,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2020-02-11 01:10:12,733 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9487179487179487 [2020-02-11 01:10:12,733 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2020-02-11 01:10:12,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2020-02-11 01:10:12,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-11 01:10:12,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2020-02-11 01:10:12,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-11 01:10:12,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-11 01:10:12,737 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-11 01:10:12,737 INFO L178 Difference]: Start difference. First operand has 80 places, 110 transitions. Second operand 3 states and 407 transitions. [2020-02-11 01:10:12,739 INFO L206 Difference]: Finished difference. Result has 82 places, 109 transitions [2020-02-11 01:10:12,739 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=492, PETRI_PLACES=82, PETRI_TRANSITIONS=109} [2020-02-11 01:10:12,739 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 82 places, 109 transitions [2020-02-11 01:10:12,842 INFO L129 PetriNetUnfolder]: 414/661 cut-off events. [2020-02-11 01:10:12,842 INFO L130 PetriNetUnfolder]: For 635/635 co-relation queries the response was YES. [2020-02-11 01:10:12,852 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1332 conditions, 661 events. 414/661 cut-off events. For 635/635 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2479 event pairs. 0/661 useless extension candidates. Maximal degree in co-relation 1309. Up to 108 conditions per place. [2020-02-11 01:10:12,852 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 109 transitions [2020-02-11 01:10:12,868 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 109 transitions [2020-02-11 01:10:12,868 INFO L479 AbstractCegarLoop]: Abstraction has has 82 places, 109 transitions [2020-02-11 01:10:12,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-11 01:10:12,978 INFO L129 PetriNetUnfolder]: 414/660 cut-off events. [2020-02-11 01:10:12,978 INFO L130 PetriNetUnfolder]: For 635/635 co-relation queries the response was YES. [2020-02-11 01:10:12,978 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-11 01:10:12,978 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-11 01:10:12,979 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-11 01:10:12,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-11 01:10:12,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1602911171, now seen corresponding path program 1 times [2020-02-11 01:10:12,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-11 01:10:12,982 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507639857] [2020-02-11 01:10:12,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-11 01:10:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-11 01:10:13,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-11 01:10:13,048 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507639857] [2020-02-11 01:10:13,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-11 01:10:13,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-11 01:10:13,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1460998832] [2020-02-11 01:10:13,048 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-11 01:10:13,052 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-11 01:10:41,966 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 118098 states and 787321 transitions. [2020-02-11 01:10:41,966 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-11 01:10:42,382 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 16 times. [2020-02-11 01:10:42,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-11 01:10:42,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-11 01:10:42,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-11 01:10:42,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-11 01:10:42,384 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 143 [2020-02-11 01:10:42,384 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 109 transitions. Second operand 3 states. [2020-02-11 01:10:42,384 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-11 01:10:42,384 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 143 [2020-02-11 01:10:42,384 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-11 01:10:42,429 INFO L129 PetriNetUnfolder]: 100/211 cut-off events. [2020-02-11 01:10:42,429 INFO L130 PetriNetUnfolder]: For 389/389 co-relation queries the response was YES. [2020-02-11 01:10:42,432 INFO L76 FinitePrefix]: Finished finitePrefix Result has 444 conditions, 211 events. 100/211 cut-off events. For 389/389 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 693 event pairs. 61/272 useless extension candidates. Maximal degree in co-relation 420. Up to 30 conditions per place. [2020-02-11 01:10:42,438 INFO L145 encePairwiseOnDemand]: 134/143 looper letters, 2 selfloop transitions, 1 changer transitions 0/101 dead transitions. [2020-02-11 01:10:42,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-11 01:10:42,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-11 01:10:42,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2020-02-11 01:10:42,439 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9487179487179487 [2020-02-11 01:10:42,439 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2020-02-11 01:10:42,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2020-02-11 01:10:42,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-11 01:10:42,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2020-02-11 01:10:42,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-11 01:10:42,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-11 01:10:42,442 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-11 01:10:42,442 INFO L178 Difference]: Start difference. First operand has 82 places, 109 transitions. Second operand 3 states and 407 transitions. [2020-02-11 01:10:42,443 INFO L206 Difference]: Finished difference. Result has 84 places, 101 transitions [2020-02-11 01:10:42,443 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=454, PETRI_PLACES=84, PETRI_TRANSITIONS=101} [2020-02-11 01:10:42,444 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 84 places, 101 transitions [2020-02-11 01:10:42,467 INFO L129 PetriNetUnfolder]: 100/211 cut-off events. [2020-02-11 01:10:42,467 INFO L130 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2020-02-11 01:10:42,470 INFO L76 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 211 events. 100/211 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 638 event pairs. 0/211 useless extension candidates. Maximal degree in co-relation 410. Up to 30 conditions per place. [2020-02-11 01:10:42,470 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 101 transitions [2020-02-11 01:10:42,476 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 101 transitions [2020-02-11 01:10:42,476 INFO L479 AbstractCegarLoop]: Abstraction has has 84 places, 101 transitions [2020-02-11 01:10:42,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-11 01:10:42,499 INFO L129 PetriNetUnfolder]: 100/210 cut-off events. [2020-02-11 01:10:42,499 INFO L130 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2020-02-11 01:10:42,499 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-11 01:10:42,500 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-11 01:10:42,500 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-11 01:10:42,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-11 01:10:42,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1825356951, now seen corresponding path program 1 times [2020-02-11 01:10:42,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-11 01:10:42,501 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345002672] [2020-02-11 01:10:42,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-11 01:10:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-11 01:10:42,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-11 01:10:42,554 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345002672] [2020-02-11 01:10:42,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-11 01:10:42,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-11 01:10:42,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [432542711] [2020-02-11 01:10:42,555 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-11 01:10:42,558 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-11 01:11:10,745 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 118098 states and 787321 transitions. [2020-02-11 01:11:10,745 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-11 01:11:11,149 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 6 times. [2020-02-11 01:11:11,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-11 01:11:11,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-11 01:11:11,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-11 01:11:11,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-11 01:11:11,151 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 143 [2020-02-11 01:11:11,151 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 101 transitions. Second operand 3 states. [2020-02-11 01:11:11,151 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-11 01:11:11,151 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 143 [2020-02-11 01:11:11,152 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-11 01:11:11,185 INFO L129 PetriNetUnfolder]: 53/143 cut-off events. [2020-02-11 01:11:11,185 INFO L130 PetriNetUnfolder]: For 181/181 co-relation queries the response was YES. [2020-02-11 01:11:11,187 INFO L76 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 143 events. 53/143 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 435 event pairs. 14/157 useless extension candidates. Maximal degree in co-relation 285. Up to 18 conditions per place. [2020-02-11 01:11:11,191 INFO L145 encePairwiseOnDemand]: 138/143 looper letters, 6 selfloop transitions, 1 changer transitions 0/97 dead transitions. [2020-02-11 01:11:11,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-11 01:11:11,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-11 01:11:11,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2020-02-11 01:11:11,194 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9487179487179487 [2020-02-11 01:11:11,194 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2020-02-11 01:11:11,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2020-02-11 01:11:11,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-11 01:11:11,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2020-02-11 01:11:11,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-11 01:11:11,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-11 01:11:11,196 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-11 01:11:11,196 INFO L178 Difference]: Start difference. First operand has 84 places, 101 transitions. Second operand 3 states and 407 transitions. [2020-02-11 01:11:11,197 INFO L206 Difference]: Finished difference. Result has 86 places, 97 transitions [2020-02-11 01:11:11,197 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=436, PETRI_PLACES=86, PETRI_TRANSITIONS=97} [2020-02-11 01:11:11,198 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 86 places, 97 transitions [2020-02-11 01:11:11,213 INFO L129 PetriNetUnfolder]: 53/143 cut-off events. [2020-02-11 01:11:11,213 INFO L130 PetriNetUnfolder]: For 119/119 co-relation queries the response was YES. [2020-02-11 01:11:11,215 INFO L76 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 143 events. 53/143 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 399 event pairs. 0/143 useless extension candidates. Maximal degree in co-relation 275. Up to 18 conditions per place. [2020-02-11 01:11:11,215 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 97 transitions [2020-02-11 01:11:11,219 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 97 transitions [2020-02-11 01:11:11,219 INFO L479 AbstractCegarLoop]: Abstraction has has 86 places, 97 transitions [2020-02-11 01:11:11,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-11 01:11:11,234 INFO L129 PetriNetUnfolder]: 53/142 cut-off events. [2020-02-11 01:11:11,234 INFO L130 PetriNetUnfolder]: For 119/119 co-relation queries the response was YES. [2020-02-11 01:11:11,234 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-11 01:11:11,234 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-11 01:11:11,234 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-11 01:11:11,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-11 01:11:11,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1350116905, now seen corresponding path program 1 times [2020-02-11 01:11:11,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-11 01:11:11,235 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459524537] [2020-02-11 01:11:11,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-11 01:11:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-11 01:11:11,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-11 01:11:11,263 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459524537] [2020-02-11 01:11:11,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-11 01:11:11,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-11 01:11:11,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1379310644] [2020-02-11 01:11:11,264 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-11 01:11:11,267 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-11 01:11:36,144 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 118098 states and 787321 transitions. [2020-02-11 01:11:36,145 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-11 01:11:36,575 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 20 times. [2020-02-11 01:11:36,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-11 01:11:36,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-11 01:11:36,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-11 01:11:36,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-11 01:11:36,576 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 143 [2020-02-11 01:11:36,577 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 97 transitions. Second operand 3 states. [2020-02-11 01:11:36,577 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-11 01:11:36,577 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 143 [2020-02-11 01:11:36,577 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-11 01:11:36,600 INFO L129 PetriNetUnfolder]: 3/47 cut-off events. [2020-02-11 01:11:36,601 INFO L130 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2020-02-11 01:11:36,601 INFO L76 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 47 events. 3/47 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 76 event pairs. 12/59 useless extension candidates. Maximal degree in co-relation 85. Up to 4 conditions per place. [2020-02-11 01:11:36,603 INFO L145 encePairwiseOnDemand]: 133/143 looper letters, 1 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2020-02-11 01:11:36,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-11 01:11:36,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-11 01:11:36,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2020-02-11 01:11:36,605 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9487179487179487 [2020-02-11 01:11:36,605 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2020-02-11 01:11:36,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2020-02-11 01:11:36,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-11 01:11:36,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2020-02-11 01:11:36,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-11 01:11:36,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-11 01:11:36,607 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-11 01:11:36,607 INFO L178 Difference]: Start difference. First operand has 86 places, 97 transitions. Second operand 3 states and 407 transitions. [2020-02-11 01:11:36,608 INFO L206 Difference]: Finished difference. Result has 88 places, 46 transitions [2020-02-11 01:11:36,608 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=88, PETRI_TRANSITIONS=46} [2020-02-11 01:11:36,608 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 88 places, 46 transitions [2020-02-11 01:11:36,615 INFO L129 PetriNetUnfolder]: 3/47 cut-off events. [2020-02-11 01:11:36,615 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2020-02-11 01:11:36,616 INFO L76 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 47 events. 3/47 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 75 event pairs. 0/47 useless extension candidates. Maximal degree in co-relation 84. Up to 4 conditions per place. [2020-02-11 01:11:36,616 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 46 transitions [2020-02-11 01:11:36,617 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 46 transitions [2020-02-11 01:11:36,618 INFO L479 AbstractCegarLoop]: Abstraction has has 88 places, 46 transitions [2020-02-11 01:11:36,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-11 01:11:36,624 INFO L129 PetriNetUnfolder]: 3/46 cut-off events. [2020-02-11 01:11:36,624 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2020-02-11 01:11:36,624 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-11 01:11:36,624 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-11 01:11:36,624 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-11 01:11:36,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-11 01:11:36,625 INFO L82 PathProgramCache]: Analyzing trace with hash -398406995, now seen corresponding path program 1 times [2020-02-11 01:11:36,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-11 01:11:36,625 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404449235] [2020-02-11 01:11:36,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-11 01:11:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-11 01:11:36,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-11 01:11:36,658 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404449235] [2020-02-11 01:11:36,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-11 01:11:36,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-11 01:11:36,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [145215554] [2020-02-11 01:11:36,659 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-11 01:11:36,662 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-11 01:12:04,454 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 118098 states and 787321 transitions. [2020-02-11 01:12:04,454 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-11 01:12:04,862 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 8 times. [2020-02-11 01:12:04,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-11 01:12:04,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-11 01:12:04,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-11 01:12:04,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-11 01:12:04,863 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 143 [2020-02-11 01:12:04,863 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 46 transitions. Second operand 3 states. [2020-02-11 01:12:04,863 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-11 01:12:04,863 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 143 [2020-02-11 01:12:04,863 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-11 01:12:04,872 INFO L129 PetriNetUnfolder]: 0/41 cut-off events. [2020-02-11 01:12:04,872 INFO L130 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2020-02-11 01:12:04,873 INFO L76 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 41 events. 0/41 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 57 event pairs. 2/43 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2020-02-11 01:12:04,875 INFO L145 encePairwiseOnDemand]: 140/143 looper letters, 1 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2020-02-11 01:12:04,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-11 01:12:04,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-11 01:12:04,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions. [2020-02-11 01:12:04,876 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9324009324009324 [2020-02-11 01:12:04,877 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions. [2020-02-11 01:12:04,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions. [2020-02-11 01:12:04,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-11 01:12:04,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions. [2020-02-11 01:12:04,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-11 01:12:04,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-11 01:12:04,879 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-11 01:12:04,879 INFO L178 Difference]: Start difference. First operand has 88 places, 46 transitions. Second operand 3 states and 400 transitions. [2020-02-11 01:12:04,880 INFO L206 Difference]: Finished difference. Result has 90 places, 41 transitions [2020-02-11 01:12:04,880 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=90, PETRI_TRANSITIONS=41} [2020-02-11 01:12:04,880 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 90 places, 41 transitions [2020-02-11 01:12:04,886 INFO L129 PetriNetUnfolder]: 0/41 cut-off events. [2020-02-11 01:12:04,887 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-02-11 01:12:04,888 INFO L76 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 41 events. 0/41 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 event pairs. 0/41 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2020-02-11 01:12:04,888 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 41 transitions [2020-02-11 01:12:04,889 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 41 transitions [2020-02-11 01:12:04,890 INFO L479 AbstractCegarLoop]: Abstraction has has 90 places, 41 transitions [2020-02-11 01:12:04,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-11 01:12:04,895 INFO L129 PetriNetUnfolder]: 0/40 cut-off events. [2020-02-11 01:12:04,896 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-02-11 01:12:04,896 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-11 01:12:04,896 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-11 01:12:04,896 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-11 01:12:04,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-11 01:12:04,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1923451859, now seen corresponding path program 1 times [2020-02-11 01:12:04,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-11 01:12:04,898 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798296059] [2020-02-11 01:12:04,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-11 01:12:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-11 01:12:05,464 WARN L192 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 18 [2020-02-11 01:12:05,839 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 34 [2020-02-11 01:12:06,013 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 34 [2020-02-11 01:12:06,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-11 01:12:06,033 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798296059] [2020-02-11 01:12:06,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-11 01:12:06,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-02-11 01:12:06,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1372963525] [2020-02-11 01:12:06,034 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-11 01:12:06,037 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-11 01:12:32,262 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 118098 states and 787321 transitions. [2020-02-11 01:12:32,263 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-11 01:12:34,340 WARN L192 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-02-11 01:15:42,683 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-02-11 01:16:26,499 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2020-02-11 01:16:32,131 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-02-11 01:17:16,935 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-02-11 01:17:25,314 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-02-11 01:17:35,691 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-02-11 01:17:37,680 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-02-11 01:17:38,625 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-02-11 01:17:42,995 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-02-11 01:17:44,952 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-02-11 01:17:53,079 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-02-11 01:17:55,938 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-02-11 01:17:56,925 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 Received shutdown request... [2020-02-11 01:19:01,659 WARN L544 AbstractCegarLoop]: Verification canceled [2020-02-11 01:19:01,665 WARN L227 ceAbstractionStarter]: Timeout [2020-02-11 01:19:01,665 INFO L202 PluginConnector]: Adding new model example_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.02 01:19:01 BasicIcfg [2020-02-11 01:19:01,665 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-02-11 01:19:01,667 INFO L168 Benchmark]: Toolchain (without parser) took 722397.95 ms. Allocated memory was 138.9 MB in the beginning and 4.5 GB in the end (delta: 4.3 GB). Free memory was 120.8 MB in the beginning and 1.1 GB in the end (delta: -991.1 MB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. [2020-02-11 01:19:01,668 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.17 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: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-02-11 01:19:01,668 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.84 ms. Allocated memory is still 138.9 MB. Free memory was 120.6 MB in the beginning and 118.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-02-11 01:19:01,669 INFO L168 Benchmark]: Boogie Preprocessor took 21.58 ms. Allocated memory is still 138.9 MB. Free memory was 118.9 MB in the beginning and 117.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-02-11 01:19:01,669 INFO L168 Benchmark]: RCFGBuilder took 369.33 ms. Allocated memory is still 138.9 MB. Free memory was 117.6 MB in the beginning and 102.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2020-02-11 01:19:01,675 INFO L168 Benchmark]: TraceAbstraction took 721966.49 ms. Allocated memory was 138.9 MB in the beginning and 4.5 GB in the end (delta: 4.3 GB). Free memory was 102.5 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. [2020-02-11 01:19:01,679 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.17 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: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 34.84 ms. Allocated memory is still 138.9 MB. Free memory was 120.6 MB in the beginning and 118.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.58 ms. Allocated memory is still 138.9 MB. Free memory was 118.9 MB in the beginning and 117.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 369.33 ms. Allocated memory is still 138.9 MB. Free memory was 117.6 MB in the beginning and 102.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 721966.49 ms. Allocated memory was 138.9 MB in the beginning and 4.5 GB in the end (delta: 4.3 GB). Free memory was 102.5 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 33]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 33). Cancelled while CegarLoopForPetriNet was analyzing trace of length 42 with TraceHistMax 1,while PredicateComparison was comparing new predicate (quantifier-free) to 949 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. Result: TIMEOUT, OverallTime: 721.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 7.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 9 SDtfs, 38 SDslu, 0 SDs, 0 SdLazy, 38 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=131occurred 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: 4.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 369 NumberOfCodeBlocks, 369 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 360 ConstructedInterpolants, 0 QuantifiedInterpolants, 24160 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 could not prove your program: Timeout Completed graceful shutdown