/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-SemanticLbe.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_8.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d9e330d [2020-02-10 23:00:11,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-02-10 23:00:11,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-02-10 23:00:11,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-02-10 23:00:11,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-02-10 23:00:11,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-02-10 23:00:11,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-02-10 23:00:11,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-02-10 23:00:11,188 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-02-10 23:00:11,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-02-10 23:00:11,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-02-10 23:00:11,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-02-10 23:00:11,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-02-10 23:00:11,199 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-02-10 23:00:11,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-02-10 23:00:11,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-02-10 23:00:11,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-02-10 23:00:11,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-02-10 23:00:11,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-02-10 23:00:11,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-02-10 23:00:11,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-02-10 23:00:11,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-02-10 23:00:11,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-02-10 23:00:11,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-02-10 23:00:11,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-02-10 23:00:11,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-02-10 23:00:11,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-02-10 23:00:11,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-02-10 23:00:11,236 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-SemanticLbe.epf [2020-02-10 23:00:11,269 INFO L113 SettingsManager]: Loading preferences was successful [2020-02-10 23:00:11,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-02-10 23:00:11,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-02-10 23:00:11,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-02-10 23:00:11,274 INFO L138 SettingsManager]: * Use SBE=true [2020-02-10 23:00:11,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-02-10 23:00:11,275 INFO L138 SettingsManager]: * sizeof long=4 [2020-02-10 23:00:11,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-02-10 23:00:11,275 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-02-10 23:00:11,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-02-10 23:00:11,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-02-10 23:00:11,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-02-10 23:00:11,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-02-10 23:00:11,276 INFO L138 SettingsManager]: * sizeof long double=12 [2020-02-10 23:00:11,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-02-10 23:00:11,277 INFO L138 SettingsManager]: * Use constant arrays=true [2020-02-10 23:00:11,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-02-10 23:00:11,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-02-10 23:00:11,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-02-10 23:00:11,277 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-02-10 23:00:11,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-02-10 23:00:11,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-02-10 23:00:11,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-02-10 23:00:11,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-02-10 23:00:11,281 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-02-10 23:00:11,281 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-02-10 23:00:11,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-02-10 23:00:11,281 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-02-10 23:00:11,282 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-02-10 23:00:11,600 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-02-10 23:00:11,622 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-02-10 23:00:11,627 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-02-10 23:00:11,628 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-02-10 23:00:11,628 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-02-10 23:00:11,629 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_8.bpl [2020-02-10 23:00:11,630 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_8.bpl' [2020-02-10 23:00:11,671 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-02-10 23:00:11,676 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-02-10 23:00:11,676 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-02-10 23:00:11,676 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-02-10 23:00:11,677 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-02-10 23:00:11,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:11" (1/1) ... [2020-02-10 23:00:11,701 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:11" (1/1) ... [2020-02-10 23:00:11,710 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-02-10 23:00:11,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-02-10 23:00:11,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-02-10 23:00:11,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-02-10 23:00:11,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:11" (1/1) ... [2020-02-10 23:00:11,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:11" (1/1) ... [2020-02-10 23:00:11,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:11" (1/1) ... [2020-02-10 23:00:11,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:11" (1/1) ... [2020-02-10 23:00:11,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:11" (1/1) ... [2020-02-10 23:00:11,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:11" (1/1) ... [2020-02-10 23:00:11,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:11" (1/1) ... [2020-02-10 23:00:11,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-02-10 23:00:11,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-02-10 23:00:11,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-02-10 23:00:11,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-02-10 23:00:11,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:11" (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 [2020-02-10 23:00:11,799 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-02-10 23:00:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-02-10 23:00:11,800 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-02-10 23:00:11,802 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-02-10 23:00:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-02-10 23:00:11,802 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-02-10 23:00:11,802 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-02-10 23:00:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-02-10 23:00:11,803 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-02-10 23:00:11,803 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-02-10 23:00:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-02-10 23:00:11,803 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-02-10 23:00:11,803 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-02-10 23:00:11,804 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-02-10 23:00:11,804 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-02-10 23:00:11,804 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-02-10 23:00:11,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-02-10 23:00:11,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-02-10 23:00:11,805 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2020-02-10 23:00:11,805 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2020-02-10 23:00:11,806 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2020-02-10 23:00:11,806 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2020-02-10 23:00:11,806 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2020-02-10 23:00:11,806 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2020-02-10 23:00:11,807 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2020-02-10 23:00:11,807 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2020-02-10 23:00:11,808 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2020-02-10 23:00:11,809 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-02-10 23:00:12,095 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-02-10 23:00:12,096 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-02-10 23:00:12,100 INFO L202 PluginConnector]: Adding new model example_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:00:12 BoogieIcfgContainer [2020-02-10 23:00:12,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-02-10 23:00:12,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-02-10 23:00:12,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-02-10 23:00:12,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-02-10 23:00:12,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:11" (1/2) ... [2020-02-10 23:00:12,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e4dd588 and model type example_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 11:00:12, skipping insertion in model container [2020-02-10 23:00:12,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:00:12" (2/2) ... [2020-02-10 23:00:12,108 INFO L109 eAbstractionObserver]: Analyzing ICFG example_8.bpl [2020-02-10 23:00:12,118 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-02-10 23:00:12,125 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-02-10 23:00:12,127 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-02-10 23:00:12,360 INFO L251 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-02-10 23:00:12,376 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-02-10 23:00:12,376 INFO L376 AbstractCegarLoop]: Hoare is false [2020-02-10 23:00:12,376 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-02-10 23:00:12,376 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-02-10 23:00:12,376 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-02-10 23:00:12,377 INFO L380 AbstractCegarLoop]: Difference is false [2020-02-10 23:00:12,377 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-02-10 23:00:12,377 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-02-10 23:00:12,391 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 68 places, 99 transitions [2020-02-10 23:00:12,790 INFO L129 PetriNetUnfolder]: 769/1051 cut-off events. [2020-02-10 23:00:12,790 INFO L130 PetriNetUnfolder]: For 1024/1024 co-relation queries the response was YES. [2020-02-10 23:00:12,810 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2100 conditions, 1051 events. 769/1051 cut-off events. For 1024/1024 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3864 event pairs. 0/1050 useless extension candidates. Maximal degree in co-relation 933. Up to 280 conditions per place. [2020-02-10 23:00:12,811 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 99 transitions [2020-02-10 23:00:12,842 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 89 transitions [2020-02-10 23:00:12,846 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 89 transitions [2020-02-10 23:00:12,847 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 58 places, 89 transitions [2020-02-10 23:00:13,165 INFO L129 PetriNetUnfolder]: 769/1049 cut-off events. [2020-02-10 23:00:13,166 INFO L130 PetriNetUnfolder]: For 1024/1024 co-relation queries the response was YES. [2020-02-10 23:00:13,177 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2098 conditions, 1049 events. 769/1049 cut-off events. For 1024/1024 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3640 event pairs. 0/1049 useless extension candidates. Maximal degree in co-relation 933. Up to 280 conditions per place. [2020-02-10 23:00:13,220 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 58 places, 89 transitions [2020-02-10 23:00:13,548 INFO L129 PetriNetUnfolder]: 769/1049 cut-off events. [2020-02-10 23:00:13,548 INFO L130 PetriNetUnfolder]: For 1024/1024 co-relation queries the response was YES. [2020-02-10 23:00:13,556 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2098 conditions, 1049 events. 769/1049 cut-off events. For 1024/1024 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3640 event pairs. 0/1049 useless extension candidates. Maximal degree in co-relation 933. Up to 280 conditions per place. [2020-02-10 23:00:13,577 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1904 [2020-02-10 23:00:13,578 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-02-10 23:00:13,686 INFO L206 etLargeBlockEncoding]: Checked pairs total: 532 [2020-02-10 23:00:13,686 INFO L214 etLargeBlockEncoding]: Total number of compositions: 8 [2020-02-10 23:00:13,686 INFO L160 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 844 [2020-02-10 23:00:13,859 INFO L129 PetriNetUnfolder]: 769/1040 cut-off events. [2020-02-10 23:00:13,859 INFO L130 PetriNetUnfolder]: For 1024/1024 co-relation queries the response was YES. [2020-02-10 23:00:13,859 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:13,860 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] [2020-02-10 23:00:13,862 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_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]=== [2020-02-10 23:00:13,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:13,868 INFO L82 PathProgramCache]: Analyzing trace with hash -112259505, now seen corresponding path program 1 times [2020-02-10 23:00:13,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:13,877 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197132076] [2020-02-10 23:00:13,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:14,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:14,028 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197132076] [2020-02-10 23:00:14,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:14,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:00:14,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459944621] [2020-02-10 23:00:14,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:00:14,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:14,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:00:14,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:00:14,058 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 107 [2020-02-10 23:00:14,060 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 81 transitions. Second operand 3 states. [2020-02-10 23:00:14,060 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:14,060 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 107 [2020-02-10 23:00:14,062 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:14,193 INFO L129 PetriNetUnfolder]: 328/480 cut-off events. [2020-02-10 23:00:14,194 INFO L130 PetriNetUnfolder]: For 840/840 co-relation queries the response was YES. [2020-02-10 23:00:14,197 INFO L76 FinitePrefix]: Finished finitePrefix Result has 978 conditions, 480 events. 328/480 cut-off events. For 840/840 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1991 event pairs. 120/600 useless extension candidates. Maximal degree in co-relation 907. Up to 140 conditions per place. [2020-02-10 23:00:14,242 INFO L145 encePairwiseOnDemand]: 100/107 looper letters, 2 selfloop transitions, 1 changer transitions 0/75 dead transitions. [2020-02-10 23:00:14,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:00:14,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:00:14,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2020-02-10 23:00:14,266 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9439252336448598 [2020-02-10 23:00:14,268 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2020-02-10 23:00:14,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2020-02-10 23:00:14,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:14,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2020-02-10 23:00:14,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:00:14,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:00:14,291 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:00:14,294 INFO L178 Difference]: Start difference. First operand has 50 places, 81 transitions. Second operand 3 states and 303 transitions. [2020-02-10 23:00:14,296 INFO L206 Difference]: Finished difference. Result has 52 places, 75 transitions [2020-02-10 23:00:14,299 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=350, PETRI_PLACES=52, PETRI_TRANSITIONS=75} [2020-02-10 23:00:14,301 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 52 places, 75 transitions [2020-02-10 23:00:14,370 INFO L129 PetriNetUnfolder]: 328/480 cut-off events. [2020-02-10 23:00:14,370 INFO L130 PetriNetUnfolder]: For 464/464 co-relation queries the response was YES. [2020-02-10 23:00:14,374 INFO L76 FinitePrefix]: Finished finitePrefix Result has 970 conditions, 480 events. 328/480 cut-off events. For 464/464 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1623 event pairs. 0/480 useless extension candidates. Maximal degree in co-relation 938. Up to 140 conditions per place. [2020-02-10 23:00:14,375 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 75 transitions [2020-02-10 23:00:14,383 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 75 transitions [2020-02-10 23:00:14,385 INFO L479 AbstractCegarLoop]: Abstraction has has 52 places, 75 transitions [2020-02-10 23:00:14,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:00:14,440 INFO L129 PetriNetUnfolder]: 328/479 cut-off events. [2020-02-10 23:00:14,440 INFO L130 PetriNetUnfolder]: For 464/464 co-relation queries the response was YES. [2020-02-10 23:00:14,441 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:14,441 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] [2020-02-10 23:00:14,441 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_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]=== [2020-02-10 23:00:14,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:14,442 INFO L82 PathProgramCache]: Analyzing trace with hash 410598267, now seen corresponding path program 1 times [2020-02-10 23:00:14,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:14,443 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827132900] [2020-02-10 23:00:14,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:14,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:14,512 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827132900] [2020-02-10 23:00:14,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:14,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:00:14,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400016631] [2020-02-10 23:00:14,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:00:14,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:14,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:00:14,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:00:14,518 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 107 [2020-02-10 23:00:14,519 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 75 transitions. Second operand 3 states. [2020-02-10 23:00:14,519 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:14,519 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 107 [2020-02-10 23:00:14,519 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:14,590 INFO L129 PetriNetUnfolder]: 292/437 cut-off events. [2020-02-10 23:00:14,591 INFO L130 PetriNetUnfolder]: For 559/559 co-relation queries the response was YES. [2020-02-10 23:00:14,594 INFO L76 FinitePrefix]: Finished finitePrefix Result has 944 conditions, 437 events. 292/437 cut-off events. For 559/559 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1775 event pairs. 7/444 useless extension candidates. Maximal degree in co-relation 910. Up to 140 conditions per place. [2020-02-10 23:00:14,602 INFO L145 encePairwiseOnDemand]: 104/107 looper letters, 6 selfloop transitions, 1 changer transitions 0/73 dead transitions. [2020-02-10 23:00:14,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:00:14,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:00:14,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2020-02-10 23:00:14,611 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9439252336448598 [2020-02-10 23:00:14,611 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2020-02-10 23:00:14,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2020-02-10 23:00:14,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:14,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2020-02-10 23:00:14,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:00:14,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:00:14,622 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:00:14,622 INFO L178 Difference]: Start difference. First operand has 52 places, 75 transitions. Second operand 3 states and 303 transitions. [2020-02-10 23:00:14,623 INFO L206 Difference]: Finished difference. Result has 54 places, 73 transitions [2020-02-10 23:00:14,624 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=54, PETRI_TRANSITIONS=73} [2020-02-10 23:00:14,624 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 54 places, 73 transitions [2020-02-10 23:00:14,678 INFO L129 PetriNetUnfolder]: 292/437 cut-off events. [2020-02-10 23:00:14,679 INFO L130 PetriNetUnfolder]: For 422/422 co-relation queries the response was YES. [2020-02-10 23:00:14,683 INFO L76 FinitePrefix]: Finished finitePrefix Result has 886 conditions, 437 events. 292/437 cut-off events. For 422/422 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1475 event pairs. 0/437 useless extension candidates. Maximal degree in co-relation 865. Up to 140 conditions per place. [2020-02-10 23:00:14,683 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 73 transitions [2020-02-10 23:00:14,691 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 73 transitions [2020-02-10 23:00:14,691 INFO L479 AbstractCegarLoop]: Abstraction has has 54 places, 73 transitions [2020-02-10 23:00:14,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:00:14,772 INFO L129 PetriNetUnfolder]: 292/436 cut-off events. [2020-02-10 23:00:14,772 INFO L130 PetriNetUnfolder]: For 422/422 co-relation queries the response was YES. [2020-02-10 23:00:14,772 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:14,772 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] [2020-02-10 23:00:14,773 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_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]=== [2020-02-10 23:00:14,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:14,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1144141215, now seen corresponding path program 1 times [2020-02-10 23:00:14,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:14,774 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955469553] [2020-02-10 23:00:14,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:14,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:14,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:14,830 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955469553] [2020-02-10 23:00:14,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:14,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:00:14,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011167084] [2020-02-10 23:00:14,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:00:14,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:14,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:00:14,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:00:14,834 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 107 [2020-02-10 23:00:14,835 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 73 transitions. Second operand 3 states. [2020-02-10 23:00:14,835 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:14,835 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 107 [2020-02-10 23:00:14,835 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:14,915 INFO L129 PetriNetUnfolder]: 287/431 cut-off events. [2020-02-10 23:00:14,915 INFO L130 PetriNetUnfolder]: For 536/536 co-relation queries the response was YES. [2020-02-10 23:00:14,919 INFO L76 FinitePrefix]: Finished finitePrefix Result has 934 conditions, 431 events. 287/431 cut-off events. For 536/536 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1762 event pairs. 1/432 useless extension candidates. Maximal degree in co-relation 911. Up to 140 conditions per place. [2020-02-10 23:00:14,927 INFO L145 encePairwiseOnDemand]: 105/107 looper letters, 7 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2020-02-10 23:00:14,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:00:14,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:00:14,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2020-02-10 23:00:14,930 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9439252336448598 [2020-02-10 23:00:14,930 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2020-02-10 23:00:14,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2020-02-10 23:00:14,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:14,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2020-02-10 23:00:14,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:00:14,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:00:14,933 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:00:14,934 INFO L178 Difference]: Start difference. First operand has 54 places, 73 transitions. Second operand 3 states and 303 transitions. [2020-02-10 23:00:14,937 INFO L206 Difference]: Finished difference. Result has 56 places, 72 transitions [2020-02-10 23:00:14,937 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=339, PETRI_PLACES=56, PETRI_TRANSITIONS=72} [2020-02-10 23:00:14,937 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 56 places, 72 transitions [2020-02-10 23:00:14,985 INFO L129 PetriNetUnfolder]: 287/431 cut-off events. [2020-02-10 23:00:14,986 INFO L130 PetriNetUnfolder]: For 417/417 co-relation queries the response was YES. [2020-02-10 23:00:14,989 INFO L76 FinitePrefix]: Finished finitePrefix Result has 876 conditions, 431 events. 287/431 cut-off events. For 417/417 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1469 event pairs. 0/431 useless extension candidates. Maximal degree in co-relation 857. Up to 140 conditions per place. [2020-02-10 23:00:14,989 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 72 transitions [2020-02-10 23:00:14,996 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 72 transitions [2020-02-10 23:00:14,996 INFO L479 AbstractCegarLoop]: Abstraction has has 56 places, 72 transitions [2020-02-10 23:00:14,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:00:15,041 INFO L129 PetriNetUnfolder]: 287/430 cut-off events. [2020-02-10 23:00:15,042 INFO L130 PetriNetUnfolder]: For 417/417 co-relation queries the response was YES. [2020-02-10 23:00:15,042 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:15,042 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] [2020-02-10 23:00:15,043 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_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]=== [2020-02-10 23:00:15,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:15,043 INFO L82 PathProgramCache]: Analyzing trace with hash -186314277, now seen corresponding path program 1 times [2020-02-10 23:00:15,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:15,044 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301949083] [2020-02-10 23:00:15,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:15,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:15,094 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301949083] [2020-02-10 23:00:15,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:15,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:00:15,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332481875] [2020-02-10 23:00:15,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:00:15,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:15,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:00:15,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:00:15,100 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 107 [2020-02-10 23:00:15,101 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 72 transitions. Second operand 3 states. [2020-02-10 23:00:15,102 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:15,102 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 107 [2020-02-10 23:00:15,102 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:15,142 INFO L129 PetriNetUnfolder]: 113/201 cut-off events. [2020-02-10 23:00:15,143 INFO L130 PetriNetUnfolder]: For 354/354 co-relation queries the response was YES. [2020-02-10 23:00:15,144 INFO L76 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 201 events. 113/201 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 671 event pairs. 50/251 useless extension candidates. Maximal degree in co-relation 406. Up to 60 conditions per place. [2020-02-10 23:00:15,148 INFO L145 encePairwiseOnDemand]: 101/107 looper letters, 3 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2020-02-10 23:00:15,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:00:15,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:00:15,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2020-02-10 23:00:15,151 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9439252336448598 [2020-02-10 23:00:15,151 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2020-02-10 23:00:15,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2020-02-10 23:00:15,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:15,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2020-02-10 23:00:15,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:00:15,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:00:15,153 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:00:15,154 INFO L178 Difference]: Start difference. First operand has 56 places, 72 transitions. Second operand 3 states and 303 transitions. [2020-02-10 23:00:15,156 INFO L206 Difference]: Finished difference. Result has 58 places, 67 transitions [2020-02-10 23:00:15,156 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=316, PETRI_PLACES=58, PETRI_TRANSITIONS=67} [2020-02-10 23:00:15,156 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 58 places, 67 transitions [2020-02-10 23:00:15,177 INFO L129 PetriNetUnfolder]: 113/201 cut-off events. [2020-02-10 23:00:15,178 INFO L130 PetriNetUnfolder]: For 188/188 co-relation queries the response was YES. [2020-02-10 23:00:15,179 INFO L76 FinitePrefix]: Finished finitePrefix Result has 418 conditions, 201 events. 113/201 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 610 event pairs. 0/201 useless extension candidates. Maximal degree in co-relation 398. Up to 60 conditions per place. [2020-02-10 23:00:15,179 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 67 transitions [2020-02-10 23:00:15,184 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 67 transitions [2020-02-10 23:00:15,184 INFO L479 AbstractCegarLoop]: Abstraction has has 58 places, 67 transitions [2020-02-10 23:00:15,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:00:15,205 INFO L129 PetriNetUnfolder]: 113/200 cut-off events. [2020-02-10 23:00:15,206 INFO L130 PetriNetUnfolder]: For 188/188 co-relation queries the response was YES. [2020-02-10 23:00:15,206 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:15,207 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] [2020-02-10 23:00:15,211 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_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]=== [2020-02-10 23:00:15,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:15,211 INFO L82 PathProgramCache]: Analyzing trace with hash -192224979, now seen corresponding path program 1 times [2020-02-10 23:00:15,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:15,213 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287496003] [2020-02-10 23:00:15,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:15,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:15,256 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287496003] [2020-02-10 23:00:15,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:15,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:00:15,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576701833] [2020-02-10 23:00:15,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:00:15,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:15,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:00:15,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:00:15,260 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 107 [2020-02-10 23:00:15,260 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 67 transitions. Second operand 3 states. [2020-02-10 23:00:15,261 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:15,261 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 107 [2020-02-10 23:00:15,261 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:15,296 INFO L129 PetriNetUnfolder]: 68/141 cut-off events. [2020-02-10 23:00:15,297 INFO L130 PetriNetUnfolder]: For 195/195 co-relation queries the response was YES. [2020-02-10 23:00:15,298 INFO L76 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 141 events. 68/141 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 432 event pairs. 10/151 useless extension candidates. Maximal degree in co-relation 297. Up to 30 conditions per place. [2020-02-10 23:00:15,301 INFO L145 encePairwiseOnDemand]: 103/107 looper letters, 5 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2020-02-10 23:00:15,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:00:15,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:00:15,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2020-02-10 23:00:15,303 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9439252336448598 [2020-02-10 23:00:15,304 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2020-02-10 23:00:15,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2020-02-10 23:00:15,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:15,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2020-02-10 23:00:15,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:00:15,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:00:15,306 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:00:15,306 INFO L178 Difference]: Start difference. First operand has 58 places, 67 transitions. Second operand 3 states and 303 transitions. [2020-02-10 23:00:15,307 INFO L206 Difference]: Finished difference. Result has 60 places, 64 transitions [2020-02-10 23:00:15,307 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=303, PETRI_PLACES=60, PETRI_TRANSITIONS=64} [2020-02-10 23:00:15,307 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 60 places, 64 transitions [2020-02-10 23:00:15,321 INFO L129 PetriNetUnfolder]: 68/141 cut-off events. [2020-02-10 23:00:15,322 INFO L130 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2020-02-10 23:00:15,323 INFO L76 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 141 events. 68/141 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 400 event pairs. 0/141 useless extension candidates. Maximal degree in co-relation 279. Up to 30 conditions per place. [2020-02-10 23:00:15,323 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 64 transitions [2020-02-10 23:00:15,325 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 64 transitions [2020-02-10 23:00:15,326 INFO L479 AbstractCegarLoop]: Abstraction has has 60 places, 64 transitions [2020-02-10 23:00:15,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:00:15,339 INFO L129 PetriNetUnfolder]: 68/140 cut-off events. [2020-02-10 23:00:15,339 INFO L130 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2020-02-10 23:00:15,339 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:15,339 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] [2020-02-10 23:00:15,340 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_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]=== [2020-02-10 23:00:15,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:15,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1473391803, now seen corresponding path program 1 times [2020-02-10 23:00:15,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:15,341 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691194519] [2020-02-10 23:00:15,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:15,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:15,381 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691194519] [2020-02-10 23:00:15,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:15,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:00:15,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57227805] [2020-02-10 23:00:15,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:00:15,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:15,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:00:15,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:00:15,384 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 107 [2020-02-10 23:00:15,385 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 64 transitions. Second operand 3 states. [2020-02-10 23:00:15,385 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:15,385 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 107 [2020-02-10 23:00:15,385 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:15,409 INFO L129 PetriNetUnfolder]: 10/45 cut-off events. [2020-02-10 23:00:15,409 INFO L130 PetriNetUnfolder]: For 87/87 co-relation queries the response was YES. [2020-02-10 23:00:15,410 INFO L76 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 45 events. 10/45 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs. 17/62 useless extension candidates. Maximal degree in co-relation 89. Up to 8 conditions per place. [2020-02-10 23:00:15,412 INFO L145 encePairwiseOnDemand]: 99/107 looper letters, 1 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2020-02-10 23:00:15,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:00:15,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:00:15,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2020-02-10 23:00:15,414 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9439252336448598 [2020-02-10 23:00:15,414 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2020-02-10 23:00:15,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2020-02-10 23:00:15,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:15,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2020-02-10 23:00:15,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:00:15,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:00:15,417 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:00:15,417 INFO L178 Difference]: Start difference. First operand has 60 places, 64 transitions. Second operand 3 states and 303 transitions. [2020-02-10 23:00:15,420 INFO L206 Difference]: Finished difference. Result has 62 places, 39 transitions [2020-02-10 23:00:15,420 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=62, PETRI_TRANSITIONS=39} [2020-02-10 23:00:15,421 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 39 transitions [2020-02-10 23:00:15,428 INFO L129 PetriNetUnfolder]: 10/45 cut-off events. [2020-02-10 23:00:15,428 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2020-02-10 23:00:15,429 INFO L76 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 45 events. 10/45 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 67 event pairs. 0/45 useless extension candidates. Maximal degree in co-relation 88. Up to 8 conditions per place. [2020-02-10 23:00:15,429 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 39 transitions [2020-02-10 23:00:15,430 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 39 transitions [2020-02-10 23:00:15,430 INFO L479 AbstractCegarLoop]: Abstraction has has 62 places, 39 transitions [2020-02-10 23:00:15,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:00:15,438 INFO L129 PetriNetUnfolder]: 10/44 cut-off events. [2020-02-10 23:00:15,438 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2020-02-10 23:00:15,438 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:15,438 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] [2020-02-10 23:00:15,438 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_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]=== [2020-02-10 23:00:15,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:15,439 INFO L82 PathProgramCache]: Analyzing trace with hash 2114079275, now seen corresponding path program 1 times [2020-02-10 23:00:15,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:15,439 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453185272] [2020-02-10 23:00:15,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:15,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:15,491 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453185272] [2020-02-10 23:00:15,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:15,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:00:15,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605520463] [2020-02-10 23:00:15,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:00:15,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:15,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:00:15,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:00:15,494 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 107 [2020-02-10 23:00:15,494 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 39 transitions. Second operand 3 states. [2020-02-10 23:00:15,494 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:15,495 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 107 [2020-02-10 23:00:15,495 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:15,509 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2020-02-10 23:00:15,510 INFO L130 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2020-02-10 23:00:15,510 INFO L76 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 25 events. 0/25 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs. 4/29 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2020-02-10 23:00:15,511 INFO L145 encePairwiseOnDemand]: 102/107 looper letters, 1 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2020-02-10 23:00:15,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:00:15,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:00:15,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2020-02-10 23:00:15,514 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9345794392523364 [2020-02-10 23:00:15,514 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 300 transitions. [2020-02-10 23:00:15,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 300 transitions. [2020-02-10 23:00:15,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:15,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 300 transitions. [2020-02-10 23:00:15,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:00:15,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:00:15,517 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:00:15,517 INFO L178 Difference]: Start difference. First operand has 62 places, 39 transitions. Second operand 3 states and 300 transitions. [2020-02-10 23:00:15,518 INFO L206 Difference]: Finished difference. Result has 64 places, 25 transitions [2020-02-10 23:00:15,518 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=64, PETRI_TRANSITIONS=25} [2020-02-10 23:00:15,518 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 25 transitions [2020-02-10 23:00:15,523 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2020-02-10 23:00:15,523 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2020-02-10 23:00:15,524 INFO L76 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 25 events. 0/25 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs. 0/25 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2020-02-10 23:00:15,524 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 25 transitions [2020-02-10 23:00:15,525 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 25 transitions [2020-02-10 23:00:15,526 INFO L479 AbstractCegarLoop]: Abstraction has has 64 places, 25 transitions [2020-02-10 23:00:15,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:00:15,531 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2020-02-10 23:00:15,531 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2020-02-10 23:00:15,531 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:15,532 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] [2020-02-10 23:00:15,532 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_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]=== [2020-02-10 23:00:15,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:15,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1424923719, now seen corresponding path program 1 times [2020-02-10 23:00:15,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:15,534 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863593620] [2020-02-10 23:00:15,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:16,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:16,183 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863593620] [2020-02-10 23:00:16,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:16,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:00:16,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715168624] [2020-02-10 23:00:16,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:00:16,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:16,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:00:16,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:00:16,186 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:00:16,187 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 25 transitions. Second operand 10 states. [2020-02-10 23:00:16,187 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:16,187 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:00:16,187 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:16,679 INFO L129 PetriNetUnfolder]: 963/1556 cut-off events. [2020-02-10 23:00:16,679 INFO L130 PetriNetUnfolder]: For 203/203 co-relation queries the response was YES. [2020-02-10 23:00:16,689 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3144 conditions, 1556 events. 963/1556 cut-off events. For 203/203 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 8843 event pairs. 1/1465 useless extension candidates. Maximal degree in co-relation 3120. Up to 513 conditions per place. [2020-02-10 23:00:16,715 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 35 selfloop transitions, 7 changer transitions 1/59 dead transitions. [2020-02-10 23:00:16,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:00:16,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:00:16,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:00:16,719 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:00:16,719 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:00:16,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:00:16,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:16,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:00:16,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:00:16,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:00:16,725 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:00:16,725 INFO L178 Difference]: Start difference. First operand has 64 places, 25 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:00:16,726 INFO L206 Difference]: Finished difference. Result has 81 places, 31 transitions [2020-02-10 23:00:16,727 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=167, PETRI_PLACES=81, PETRI_TRANSITIONS=31} [2020-02-10 23:00:16,727 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 81 places, 31 transitions [2020-02-10 23:00:16,743 INFO L129 PetriNetUnfolder]: 0/82 cut-off events. [2020-02-10 23:00:16,743 INFO L130 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2020-02-10 23:00:16,754 INFO L76 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 82 events. 0/82 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 332 event pairs. 0/71 useless extension candidates. Maximal degree in co-relation 184. Up to 9 conditions per place. [2020-02-10 23:00:16,754 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 31 transitions [2020-02-10 23:00:16,758 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 31 transitions [2020-02-10 23:00:16,758 INFO L479 AbstractCegarLoop]: Abstraction has has 80 places, 31 transitions [2020-02-10 23:00:16,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:00:16,771 INFO L129 PetriNetUnfolder]: 0/75 cut-off events. [2020-02-10 23:00:16,771 INFO L130 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2020-02-10 23:00:16,771 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:16,771 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] [2020-02-10 23:00:16,771 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_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]=== [2020-02-10 23:00:16,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:16,772 INFO L82 PathProgramCache]: Analyzing trace with hash 927112641, now seen corresponding path program 2 times [2020-02-10 23:00:16,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:16,772 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209644110] [2020-02-10 23:00:16,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:17,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:17,307 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209644110] [2020-02-10 23:00:17,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:17,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:00:17,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293685895] [2020-02-10 23:00:17,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:00:17,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:17,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:00:17,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:00:17,310 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:00:17,311 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 31 transitions. Second operand 10 states. [2020-02-10 23:00:17,311 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:17,311 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:00:17,312 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:18,089 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2020-02-10 23:00:18,217 INFO L129 PetriNetUnfolder]: 1177/1933 cut-off events. [2020-02-10 23:00:18,217 INFO L130 PetriNetUnfolder]: For 2495/2503 co-relation queries the response was YES. [2020-02-10 23:00:18,231 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5847 conditions, 1933 events. 1177/1933 cut-off events. For 2495/2503 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 10606 event pairs. 1/1838 useless extension candidates. Maximal degree in co-relation 5814. Up to 678 conditions per place. [2020-02-10 23:00:18,283 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 54 selfloop transitions, 9 changer transitions 1/80 dead transitions. [2020-02-10 23:00:18,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:00:18,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:00:18,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:00:18,289 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:00:18,289 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:00:18,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:00:18,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:18,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:00:18,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:00:18,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:00:18,295 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:00:18,295 INFO L178 Difference]: Start difference. First operand has 80 places, 31 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:00:18,295 INFO L206 Difference]: Finished difference. Result has 97 places, 39 transitions [2020-02-10 23:00:18,296 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=265, PETRI_PLACES=97, PETRI_TRANSITIONS=39} [2020-02-10 23:00:18,296 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 97 places, 39 transitions [2020-02-10 23:00:18,330 INFO L129 PetriNetUnfolder]: 0/169 cut-off events. [2020-02-10 23:00:18,331 INFO L130 PetriNetUnfolder]: For 231/237 co-relation queries the response was YES. [2020-02-10 23:00:18,333 INFO L76 FinitePrefix]: Finished finitePrefix Result has 477 conditions, 169 events. 0/169 cut-off events. For 231/237 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1088 event pairs. 0/140 useless extension candidates. Maximal degree in co-relation 436. Up to 24 conditions per place. [2020-02-10 23:00:18,333 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 39 transitions [2020-02-10 23:00:18,337 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 39 transitions [2020-02-10 23:00:18,338 INFO L479 AbstractCegarLoop]: Abstraction has has 96 places, 39 transitions [2020-02-10 23:00:18,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:00:18,366 INFO L129 PetriNetUnfolder]: 0/147 cut-off events. [2020-02-10 23:00:18,367 INFO L130 PetriNetUnfolder]: For 231/237 co-relation queries the response was YES. [2020-02-10 23:00:18,367 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:18,367 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] [2020-02-10 23:00:18,367 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_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]=== [2020-02-10 23:00:18,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:18,368 INFO L82 PathProgramCache]: Analyzing trace with hash -132167175, now seen corresponding path program 3 times [2020-02-10 23:00:18,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:18,368 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735266745] [2020-02-10 23:00:18,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:18,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:18,918 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735266745] [2020-02-10 23:00:18,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:18,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:00:18,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510416973] [2020-02-10 23:00:18,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:00:18,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:18,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:00:18,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:00:18,921 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:00:18,922 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 39 transitions. Second operand 10 states. [2020-02-10 23:00:18,922 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:18,922 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:00:18,922 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:20,019 INFO L129 PetriNetUnfolder]: 1263/2243 cut-off events. [2020-02-10 23:00:20,020 INFO L130 PetriNetUnfolder]: For 5912/5920 co-relation queries the response was YES. [2020-02-10 23:00:20,043 INFO L76 FinitePrefix]: Finished finitePrefix Result has 7998 conditions, 2243 events. 1263/2243 cut-off events. For 5912/5920 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 13764 event pairs. 1/2147 useless extension candidates. Maximal degree in co-relation 7956. Up to 678 conditions per place. [2020-02-10 23:00:20,086 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 57 selfloop transitions, 11 changer transitions 1/85 dead transitions. [2020-02-10 23:00:20,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:00:20,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:00:20,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:00:20,093 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:00:20,093 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:00:20,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:00:20,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:20,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:00:20,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:00:20,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:00:20,100 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:00:20,100 INFO L178 Difference]: Start difference. First operand has 96 places, 39 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:00:20,100 INFO L206 Difference]: Finished difference. Result has 112 places, 46 transitions [2020-02-10 23:00:20,101 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=367, PETRI_PLACES=112, PETRI_TRANSITIONS=46} [2020-02-10 23:00:20,101 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 112 places, 46 transitions [2020-02-10 23:00:20,155 INFO L129 PetriNetUnfolder]: 0/309 cut-off events. [2020-02-10 23:00:20,155 INFO L130 PetriNetUnfolder]: For 626/635 co-relation queries the response was YES. [2020-02-10 23:00:20,159 INFO L76 FinitePrefix]: Finished finitePrefix Result has 935 conditions, 309 events. 0/309 cut-off events. For 626/635 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2594 event pairs. 0/262 useless extension candidates. Maximal degree in co-relation 886. Up to 38 conditions per place. [2020-02-10 23:00:20,159 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 46 transitions [2020-02-10 23:00:20,165 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 46 transitions [2020-02-10 23:00:20,165 INFO L479 AbstractCegarLoop]: Abstraction has has 111 places, 46 transitions [2020-02-10 23:00:20,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:00:20,223 INFO L129 PetriNetUnfolder]: 0/273 cut-off events. [2020-02-10 23:00:20,223 INFO L130 PetriNetUnfolder]: For 623/632 co-relation queries the response was YES. [2020-02-10 23:00:20,223 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:20,224 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] [2020-02-10 23:00:20,224 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_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]=== [2020-02-10 23:00:20,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:20,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1265521427, now seen corresponding path program 4 times [2020-02-10 23:00:20,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:20,225 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022827028] [2020-02-10 23:00:20,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:20,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:20,698 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022827028] [2020-02-10 23:00:20,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:20,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:00:20,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944969179] [2020-02-10 23:00:20,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:00:20,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:20,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:00:20,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:00:20,701 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:00:20,701 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 46 transitions. Second operand 10 states. [2020-02-10 23:00:20,701 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:20,701 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:00:20,702 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:22,252 INFO L129 PetriNetUnfolder]: 1559/3269 cut-off events. [2020-02-10 23:00:22,252 INFO L130 PetriNetUnfolder]: For 14093/14093 co-relation queries the response was YES. [2020-02-10 23:00:22,283 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13466 conditions, 3269 events. 1559/3269 cut-off events. For 14093/14093 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 24938 event pairs. 1/3167 useless extension candidates. Maximal degree in co-relation 13416. Up to 1036 conditions per place. [2020-02-10 23:00:22,348 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 70 selfloop transitions, 16 changer transitions 1/103 dead transitions. [2020-02-10 23:00:22,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:00:22,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:00:22,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:00:22,354 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:00:22,355 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:00:22,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:00:22,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:22,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:00:22,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:00:22,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:00:22,360 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:00:22,360 INFO L178 Difference]: Start difference. First operand has 111 places, 46 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:00:22,361 INFO L206 Difference]: Finished difference. Result has 128 places, 58 transitions [2020-02-10 23:00:22,362 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=560, PETRI_PLACES=128, PETRI_TRANSITIONS=58} [2020-02-10 23:00:22,362 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 128 places, 58 transitions [2020-02-10 23:00:22,565 INFO L129 PetriNetUnfolder]: 0/708 cut-off events. [2020-02-10 23:00:22,566 INFO L130 PetriNetUnfolder]: For 2189/2211 co-relation queries the response was YES. [2020-02-10 23:00:22,574 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2293 conditions, 708 events. 0/708 cut-off events. For 2189/2211 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7660 event pairs. 0/611 useless extension candidates. Maximal degree in co-relation 2235. Up to 80 conditions per place. [2020-02-10 23:00:22,575 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 58 transitions [2020-02-10 23:00:22,593 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 58 transitions [2020-02-10 23:00:22,593 INFO L479 AbstractCegarLoop]: Abstraction has has 127 places, 58 transitions [2020-02-10 23:00:22,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:00:22,756 INFO L129 PetriNetUnfolder]: 0/630 cut-off events. [2020-02-10 23:00:22,757 INFO L130 PetriNetUnfolder]: For 2181/2206 co-relation queries the response was YES. [2020-02-10 23:00:22,757 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:22,757 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] [2020-02-10 23:00:22,757 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_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]=== [2020-02-10 23:00:22,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:22,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1104503285, now seen corresponding path program 5 times [2020-02-10 23:00:22,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:22,758 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33139591] [2020-02-10 23:00:22,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:23,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:23,269 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33139591] [2020-02-10 23:00:23,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:23,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:00:23,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090140323] [2020-02-10 23:00:23,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:00:23,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:23,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:00:23,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:00:23,271 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:00:23,272 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 58 transitions. Second operand 10 states. [2020-02-10 23:00:23,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:23,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:00:23,272 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:25,864 INFO L129 PetriNetUnfolder]: 1660/3973 cut-off events. [2020-02-10 23:00:25,865 INFO L130 PetriNetUnfolder]: For 27610/27838 co-relation queries the response was YES. [2020-02-10 23:00:25,897 INFO L76 FinitePrefix]: Finished finitePrefix Result has 18711 conditions, 3973 events. 1660/3973 cut-off events. For 27610/27838 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 34892 event pairs. 1/3872 useless extension candidates. Maximal degree in co-relation 18652. Up to 942 conditions per place. [2020-02-10 23:00:25,957 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 80 selfloop transitions, 16 changer transitions 1/113 dead transitions. [2020-02-10 23:00:25,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:00:25,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:00:25,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:00:25,961 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:00:25,961 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:00:25,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:00:25,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:25,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:00:25,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:00:25,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:00:25,967 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:00:25,967 INFO L178 Difference]: Start difference. First operand has 127 places, 58 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:00:25,968 INFO L206 Difference]: Finished difference. Result has 143 places, 67 transitions [2020-02-10 23:00:25,968 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=748, PETRI_PLACES=143, PETRI_TRANSITIONS=67} [2020-02-10 23:00:25,969 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 143 places, 67 transitions [2020-02-10 23:00:26,375 INFO L129 PetriNetUnfolder]: 0/1089 cut-off events. [2020-02-10 23:00:26,375 INFO L130 PetriNetUnfolder]: For 4613/4677 co-relation queries the response was YES. [2020-02-10 23:00:26,385 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3790 conditions, 1089 events. 0/1089 cut-off events. For 4613/4677 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 13199 event pairs. 5/967 useless extension candidates. Maximal degree in co-relation 3724. Up to 118 conditions per place. [2020-02-10 23:00:26,385 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 67 transitions [2020-02-10 23:00:26,402 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 67 transitions [2020-02-10 23:00:26,402 INFO L479 AbstractCegarLoop]: Abstraction has has 142 places, 67 transitions [2020-02-10 23:00:26,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:00:26,604 INFO L129 PetriNetUnfolder]: 0/973 cut-off events. [2020-02-10 23:00:26,605 INFO L130 PetriNetUnfolder]: For 4601/4659 co-relation queries the response was YES. [2020-02-10 23:00:26,605 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:26,605 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] [2020-02-10 23:00:26,605 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_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]=== [2020-02-10 23:00:26,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:26,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1425184219, now seen corresponding path program 6 times [2020-02-10 23:00:26,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:26,606 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862773925] [2020-02-10 23:00:26,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:26,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:27,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:27,056 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862773925] [2020-02-10 23:00:27,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:27,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:00:27,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968179000] [2020-02-10 23:00:27,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:00:27,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:27,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:00:27,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:00:27,059 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:00:27,060 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 67 transitions. Second operand 10 states. [2020-02-10 23:00:27,060 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:27,060 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:00:27,060 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:31,539 INFO L129 PetriNetUnfolder]: 1973/5332 cut-off events. [2020-02-10 23:00:31,539 INFO L130 PetriNetUnfolder]: For 43948/44138 co-relation queries the response was YES. [2020-02-10 23:00:31,582 INFO L76 FinitePrefix]: Finished finitePrefix Result has 25801 conditions, 5332 events. 1973/5332 cut-off events. For 43948/44138 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 54379 event pairs. 1/5225 useless extension candidates. Maximal degree in co-relation 25734. Up to 1858 conditions per place. [2020-02-10 23:00:31,660 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 106 selfloop transitions, 20 changer transitions 3/145 dead transitions. [2020-02-10 23:00:31,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:00:31,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:00:31,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:00:31,663 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:00:31,664 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:00:31,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:00:31,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:31,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:00:31,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:00:31,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:00:31,670 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:00:31,670 INFO L178 Difference]: Start difference. First operand has 142 places, 67 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:00:31,671 INFO L206 Difference]: Finished difference. Result has 159 places, 81 transitions [2020-02-10 23:00:31,671 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1052, PETRI_PLACES=159, PETRI_TRANSITIONS=81} [2020-02-10 23:00:31,672 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 159 places, 81 transitions [2020-02-10 23:00:32,249 INFO L129 PetriNetUnfolder]: 0/1634 cut-off events. [2020-02-10 23:00:32,250 INFO L130 PetriNetUnfolder]: For 9732/9814 co-relation queries the response was YES. [2020-02-10 23:00:32,266 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6135 conditions, 1634 events. 0/1634 cut-off events. For 9732/9814 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 21964 event pairs. 4/1454 useless extension candidates. Maximal degree in co-relation 6060. Up to 176 conditions per place. [2020-02-10 23:00:32,267 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 81 transitions [2020-02-10 23:00:32,296 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 81 transitions [2020-02-10 23:00:32,297 INFO L479 AbstractCegarLoop]: Abstraction has has 158 places, 81 transitions [2020-02-10 23:00:32,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:00:32,670 INFO L129 PetriNetUnfolder]: 0/1460 cut-off events. [2020-02-10 23:00:32,671 INFO L130 PetriNetUnfolder]: For 9750/9834 co-relation queries the response was YES. [2020-02-10 23:00:32,671 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:32,671 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] [2020-02-10 23:00:32,671 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_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]=== [2020-02-10 23:00:32,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:32,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1497595543, now seen corresponding path program 7 times [2020-02-10 23:00:32,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:32,672 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379216789] [2020-02-10 23:00:32,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:33,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:33,099 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379216789] [2020-02-10 23:00:33,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:33,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:00:33,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111471808] [2020-02-10 23:00:33,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:00:33,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:33,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:00:33,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:00:33,102 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:00:33,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 81 transitions. Second operand 10 states. [2020-02-10 23:00:33,102 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:33,103 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:00:33,103 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:41,510 INFO L129 PetriNetUnfolder]: 2388/7293 cut-off events. [2020-02-10 23:00:41,511 INFO L130 PetriNetUnfolder]: For 77667/78351 co-relation queries the response was YES. [2020-02-10 23:00:41,578 INFO L76 FinitePrefix]: Finished finitePrefix Result has 37554 conditions, 7293 events. 2388/7293 cut-off events. For 77667/78351 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 82497 event pairs. 1/7168 useless extension candidates. Maximal degree in co-relation 37478. Up to 2225 conditions per place. [2020-02-10 23:00:41,701 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 117 selfloop transitions, 28 changer transitions 0/161 dead transitions. [2020-02-10 23:00:41,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:00:41,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:00:41,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:00:41,704 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:00:41,704 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:00:41,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:00:41,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:41,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:00:41,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:00:41,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:00:41,710 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:00:41,710 INFO L178 Difference]: Start difference. First operand has 158 places, 81 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:00:41,711 INFO L206 Difference]: Finished difference. Result has 175 places, 99 transitions [2020-02-10 23:00:41,712 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1052, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1465, PETRI_PLACES=175, PETRI_TRANSITIONS=99} [2020-02-10 23:00:41,712 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 175 places, 99 transitions [2020-02-10 23:00:43,493 INFO L129 PetriNetUnfolder]: 0/2742 cut-off events. [2020-02-10 23:00:43,493 INFO L130 PetriNetUnfolder]: For 21302/21483 co-relation queries the response was YES. [2020-02-10 23:00:43,516 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11126 conditions, 2742 events. 0/2742 cut-off events. For 21302/21483 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 40752 event pairs. 7/2468 useless extension candidates. Maximal degree in co-relation 11042. Up to 286 conditions per place. [2020-02-10 23:00:43,517 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 99 transitions [2020-02-10 23:00:43,557 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 99 transitions [2020-02-10 23:00:43,557 INFO L479 AbstractCegarLoop]: Abstraction has has 175 places, 99 transitions [2020-02-10 23:00:43,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:00:44,496 INFO L129 PetriNetUnfolder]: 0/2459 cut-off events. [2020-02-10 23:00:44,496 INFO L130 PetriNetUnfolder]: For 21445/21641 co-relation queries the response was YES. [2020-02-10 23:00:44,496 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:44,496 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] [2020-02-10 23:00:44,496 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_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]=== [2020-02-10 23:00:44,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:44,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1494279897, now seen corresponding path program 8 times [2020-02-10 23:00:44,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:44,497 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870809979] [2020-02-10 23:00:44,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:44,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:44,922 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870809979] [2020-02-10 23:00:44,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:44,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:00:44,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22866635] [2020-02-10 23:00:44,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:00:44,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:44,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:00:44,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:00:44,925 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:00:44,926 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 99 transitions. Second operand 10 states. [2020-02-10 23:00:44,926 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:44,926 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:00:44,926 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:57,287 INFO L129 PetriNetUnfolder]: 2756/9081 cut-off events. [2020-02-10 23:00:57,288 INFO L130 PetriNetUnfolder]: For 121609/123883 co-relation queries the response was YES. [2020-02-10 23:00:57,382 INFO L76 FinitePrefix]: Finished finitePrefix Result has 49793 conditions, 9081 events. 2756/9081 cut-off events. For 121609/123883 co-relation queries the response was YES. Maximal size of possible extension queue 910. Compared 112248 event pairs. 8/8936 useless extension candidates. Maximal degree in co-relation 49708. Up to 2666 conditions per place. [2020-02-10 23:00:57,541 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 135 selfloop transitions, 26 changer transitions 1/178 dead transitions. [2020-02-10 23:00:57,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:00:57,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:00:57,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:00:57,544 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:00:57,544 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:00:57,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:00:57,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:57,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:00:57,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:00:57,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:00:57,549 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:00:57,549 INFO L178 Difference]: Start difference. First operand has 175 places, 99 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:00:57,551 INFO L206 Difference]: Finished difference. Result has 192 places, 110 transitions [2020-02-10 23:00:57,551 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1794, PETRI_PLACES=192, PETRI_TRANSITIONS=110} [2020-02-10 23:00:57,552 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 192 places, 110 transitions [2020-02-10 23:01:00,822 INFO L129 PetriNetUnfolder]: 0/3556 cut-off events. [2020-02-10 23:01:00,822 INFO L130 PetriNetUnfolder]: For 35340/35667 co-relation queries the response was YES. [2020-02-10 23:01:00,858 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15406 conditions, 3556 events. 0/3556 cut-off events. For 35340/35667 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 55686 event pairs. 8/3208 useless extension candidates. Maximal degree in co-relation 15313. Up to 372 conditions per place. [2020-02-10 23:01:00,859 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 110 transitions [2020-02-10 23:01:00,922 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 110 transitions [2020-02-10 23:01:00,922 INFO L479 AbstractCegarLoop]: Abstraction has has 191 places, 110 transitions [2020-02-10 23:01:00,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:01:02,436 INFO L129 PetriNetUnfolder]: 0/3187 cut-off events. [2020-02-10 23:01:02,437 INFO L130 PetriNetUnfolder]: For 35196/35507 co-relation queries the response was YES. [2020-02-10 23:01:02,437 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:01:02,437 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] [2020-02-10 23:01:02,437 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_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]=== [2020-02-10 23:01:02,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:01:02,438 INFO L82 PathProgramCache]: Analyzing trace with hash -2059506315, now seen corresponding path program 9 times [2020-02-10 23:01:02,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:01:02,438 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830675650] [2020-02-10 23:01:02,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:01:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:01:02,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:01:02,913 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830675650] [2020-02-10 23:01:02,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:01:02,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:01:02,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775552916] [2020-02-10 23:01:02,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:01:02,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:01:02,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:01:02,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:01:02,915 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:01:02,916 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 110 transitions. Second operand 10 states. [2020-02-10 23:01:02,916 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:01:02,916 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:01:02,916 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:01:18,494 INFO L129 PetriNetUnfolder]: 2762/9542 cut-off events. [2020-02-10 23:01:18,494 INFO L130 PetriNetUnfolder]: For 154535/157011 co-relation queries the response was YES. [2020-02-10 23:01:18,600 INFO L76 FinitePrefix]: Finished finitePrefix Result has 55261 conditions, 9542 events. 2762/9542 cut-off events. For 154535/157011 co-relation queries the response was YES. Maximal size of possible extension queue 954. Compared 120092 event pairs. 1/9386 useless extension candidates. Maximal degree in co-relation 55167. Up to 2843 conditions per place. [2020-02-10 23:01:18,778 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 134 selfloop transitions, 33 changer transitions 1/184 dead transitions. [2020-02-10 23:01:18,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:01:18,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:01:18,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:01:18,781 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:01:18,782 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:01:18,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:01:18,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:01:18,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:01:18,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:01:18,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:01:18,788 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:01:18,788 INFO L178 Difference]: Start difference. First operand has 191 places, 110 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:01:18,790 INFO L206 Difference]: Finished difference. Result has 207 places, 122 transitions [2020-02-10 23:01:18,790 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1794, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2131, PETRI_PLACES=207, PETRI_TRANSITIONS=122} [2020-02-10 23:01:18,791 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 207 places, 122 transitions [2020-02-10 23:01:23,782 INFO L129 PetriNetUnfolder]: 0/4048 cut-off events. [2020-02-10 23:01:23,783 INFO L130 PetriNetUnfolder]: For 49087/49578 co-relation queries the response was YES. [2020-02-10 23:01:23,823 INFO L76 FinitePrefix]: Finished finitePrefix Result has 18484 conditions, 4048 events. 0/4048 cut-off events. For 49087/49578 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 64963 event pairs. 12/3668 useless extension candidates. Maximal degree in co-relation 18383. Up to 420 conditions per place. [2020-02-10 23:01:23,823 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 122 transitions [2020-02-10 23:01:23,892 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 122 transitions [2020-02-10 23:01:23,892 INFO L479 AbstractCegarLoop]: Abstraction has has 206 places, 122 transitions [2020-02-10 23:01:23,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:01:25,606 INFO L129 PetriNetUnfolder]: 0/3631 cut-off events. [2020-02-10 23:01:25,606 INFO L130 PetriNetUnfolder]: For 49103/49573 co-relation queries the response was YES. [2020-02-10 23:01:25,606 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:01:25,607 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] [2020-02-10 23:01:25,607 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_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]=== [2020-02-10 23:01:25,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:01:25,607 INFO L82 PathProgramCache]: Analyzing trace with hash -2142272287, now seen corresponding path program 10 times [2020-02-10 23:01:25,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:01:25,607 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899412760] [2020-02-10 23:01:25,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:01:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:01:26,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:01:26,054 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899412760] [2020-02-10 23:01:26,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:01:26,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:01:26,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750410784] [2020-02-10 23:01:26,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:01:26,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:01:26,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:01:26,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:01:26,057 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:01:26,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 122 transitions. Second operand 10 states. [2020-02-10 23:01:26,057 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:01:26,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:01:26,058 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:01:42,747 INFO L129 PetriNetUnfolder]: 2762/9553 cut-off events. [2020-02-10 23:01:42,747 INFO L130 PetriNetUnfolder]: For 180710/184749 co-relation queries the response was YES. [2020-02-10 23:01:42,874 INFO L76 FinitePrefix]: Finished finitePrefix Result has 58686 conditions, 9553 events. 2762/9553 cut-off events. For 180710/184749 co-relation queries the response was YES. Maximal size of possible extension queue 981. Compared 121194 event pairs. 6/9416 useless extension candidates. Maximal degree in co-relation 58584. Up to 3195 conditions per place. [2020-02-10 23:01:43,083 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 148 selfloop transitions, 35 changer transitions 3/202 dead transitions. [2020-02-10 23:01:43,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:01:43,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:01:43,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:01:43,085 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:01:43,086 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:01:43,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:01:43,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:01:43,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:01:43,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:01:43,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:01:43,090 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:01:43,090 INFO L178 Difference]: Start difference. First operand has 206 places, 122 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:01:43,091 INFO L206 Difference]: Finished difference. Result has 219 places, 125 transitions [2020-02-10 23:01:43,092 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=2131, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2293, PETRI_PLACES=219, PETRI_TRANSITIONS=125} [2020-02-10 23:01:43,092 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 219 places, 125 transitions [2020-02-10 23:01:47,618 INFO L129 PetriNetUnfolder]: 0/4038 cut-off events. [2020-02-10 23:01:47,618 INFO L130 PetriNetUnfolder]: For 55317/55806 co-relation queries the response was YES. [2020-02-10 23:01:47,676 INFO L76 FinitePrefix]: Finished finitePrefix Result has 19172 conditions, 4038 events. 0/4038 cut-off events. For 55317/55806 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 64748 event pairs. 12/3649 useless extension candidates. Maximal degree in co-relation 19066. Up to 419 conditions per place. [2020-02-10 23:01:47,676 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 125 transitions [2020-02-10 23:01:47,772 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 218 places, 125 transitions [2020-02-10 23:01:47,772 INFO L479 AbstractCegarLoop]: Abstraction has has 218 places, 125 transitions [2020-02-10 23:01:47,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:01:49,660 INFO L129 PetriNetUnfolder]: 0/3622 cut-off events. [2020-02-10 23:01:49,660 INFO L130 PetriNetUnfolder]: For 55150/55526 co-relation queries the response was YES. [2020-02-10 23:01:49,660 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:01:49,660 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] [2020-02-10 23:01:49,660 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_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]=== [2020-02-10 23:01:49,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:01:49,660 INFO L82 PathProgramCache]: Analyzing trace with hash 497737725, now seen corresponding path program 11 times [2020-02-10 23:01:49,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:01:49,661 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324337182] [2020-02-10 23:01:49,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:01:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:01:50,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:01:50,066 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324337182] [2020-02-10 23:01:50,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:01:50,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:01:50,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64290925] [2020-02-10 23:01:50,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:01:50,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:01:50,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:01:50,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:01:50,068 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:01:50,068 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 125 transitions. Second operand 10 states. [2020-02-10 23:01:50,068 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:01:50,068 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:01:50,068 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:02:15,931 INFO L129 PetriNetUnfolder]: 3149/11588 cut-off events. [2020-02-10 23:02:15,931 INFO L130 PetriNetUnfolder]: For 244734/248101 co-relation queries the response was YES. [2020-02-10 23:02:16,100 INFO L76 FinitePrefix]: Finished finitePrefix Result has 73906 conditions, 11588 events. 3149/11588 cut-off events. For 244734/248101 co-relation queries the response was YES. Maximal size of possible extension queue 1236. Compared 155084 event pairs. 7/11392 useless extension candidates. Maximal degree in co-relation 73799. Up to 3528 conditions per place. [2020-02-10 23:02:16,342 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 233 selfloop transitions, 44 changer transitions 2/295 dead transitions. [2020-02-10 23:02:16,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:02:16,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:02:16,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:02:16,344 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:02:16,344 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:02:16,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:02:16,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:02:16,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:02:16,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:02:16,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:02:16,347 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:02:16,347 INFO L178 Difference]: Start difference. First operand has 218 places, 125 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:02:16,349 INFO L206 Difference]: Finished difference. Result has 235 places, 154 transitions [2020-02-10 23:02:16,349 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=2293, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3171, PETRI_PLACES=235, PETRI_TRANSITIONS=154} [2020-02-10 23:02:16,350 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 235 places, 154 transitions [2020-02-10 23:02:24,407 INFO L129 PetriNetUnfolder]: 0/5743 cut-off events. [2020-02-10 23:02:24,407 INFO L130 PetriNetUnfolder]: For 91907/92500 co-relation queries the response was YES. [2020-02-10 23:02:24,477 INFO L76 FinitePrefix]: Finished finitePrefix Result has 28315 conditions, 5743 events. 0/5743 cut-off events. For 91907/92500 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 97731 event pairs. 21/5265 useless extension candidates. Maximal degree in co-relation 28200. Up to 590 conditions per place. [2020-02-10 23:02:24,477 INFO L82 GeneralOperation]: Start removeDead. Operand has 235 places, 154 transitions [2020-02-10 23:02:24,584 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 234 places, 154 transitions [2020-02-10 23:02:24,584 INFO L479 AbstractCegarLoop]: Abstraction has has 234 places, 154 transitions [2020-02-10 23:02:24,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:02:28,195 INFO L129 PetriNetUnfolder]: 0/5156 cut-off events. [2020-02-10 23:02:28,196 INFO L130 PetriNetUnfolder]: For 92823/93724 co-relation queries the response was YES. [2020-02-10 23:02:28,196 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:02:28,196 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] [2020-02-10 23:02:28,196 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_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]=== [2020-02-10 23:02:28,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:02:28,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1975316619, now seen corresponding path program 12 times [2020-02-10 23:02:28,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:02:28,197 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161491374] [2020-02-10 23:02:28,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:02:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:02:28,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:02:28,632 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161491374] [2020-02-10 23:02:28,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:02:28,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:02:28,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378984466] [2020-02-10 23:02:28,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:02:28,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:02:28,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:02:28,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:02:28,634 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:02:28,634 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 154 transitions. Second operand 10 states. [2020-02-10 23:02:28,634 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:02:28,635 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:02:28,635 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:02:58,779 INFO L129 PetriNetUnfolder]: 3119/12305 cut-off events. [2020-02-10 23:02:58,779 INFO L130 PetriNetUnfolder]: For 285304/288781 co-relation queries the response was YES. [2020-02-10 23:02:58,979 INFO L76 FinitePrefix]: Finished finitePrefix Result has 79894 conditions, 12305 events. 3119/12305 cut-off events. For 285304/288781 co-relation queries the response was YES. Maximal size of possible extension queue 1305. Compared 170322 event pairs. 1/12132 useless extension candidates. Maximal degree in co-relation 79778. Up to 3141 conditions per place. [2020-02-10 23:02:59,258 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 190 selfloop transitions, 55 changer transitions 4/265 dead transitions. [2020-02-10 23:02:59,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:02:59,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:02:59,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:02:59,259 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:02:59,259 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:02:59,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:02:59,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:02:59,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:02:59,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:02:59,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:02:59,263 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:02:59,263 INFO L178 Difference]: Start difference. First operand has 234 places, 154 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:02:59,265 INFO L206 Difference]: Finished difference. Result has 251 places, 180 transitions [2020-02-10 23:02:59,266 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=3171, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3935, PETRI_PLACES=251, PETRI_TRANSITIONS=180} [2020-02-10 23:02:59,266 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 251 places, 180 transitions [2020-02-10 23:03:07,975 INFO L129 PetriNetUnfolder]: 0/6172 cut-off events. [2020-02-10 23:03:07,975 INFO L130 PetriNetUnfolder]: For 119070/120420 co-relation queries the response was YES. [2020-02-10 23:03:08,054 INFO L76 FinitePrefix]: Finished finitePrefix Result has 32085 conditions, 6172 events. 0/6172 cut-off events. For 119070/120420 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 106412 event pairs. 24/5674 useless extension candidates. Maximal degree in co-relation 31961. Up to 629 conditions per place. [2020-02-10 23:03:08,054 INFO L82 GeneralOperation]: Start removeDead. Operand has 251 places, 180 transitions [2020-02-10 23:03:08,178 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 180 transitions [2020-02-10 23:03:08,178 INFO L479 AbstractCegarLoop]: Abstraction has has 250 places, 180 transitions [2020-02-10 23:03:08,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:03:12,020 INFO L129 PetriNetUnfolder]: 0/5546 cut-off events. [2020-02-10 23:03:12,020 INFO L130 PetriNetUnfolder]: For 118204/119319 co-relation queries the response was YES. [2020-02-10 23:03:12,020 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:03:12,020 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] [2020-02-10 23:03:12,020 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_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]=== [2020-02-10 23:03:12,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:03:12,021 INFO L82 PathProgramCache]: Analyzing trace with hash -927571953, now seen corresponding path program 13 times [2020-02-10 23:03:12,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:03:12,021 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65219593] [2020-02-10 23:03:12,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:03:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:03:12,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:03:12,424 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65219593] [2020-02-10 23:03:12,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:03:12,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:03:12,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272084391] [2020-02-10 23:03:12,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:03:12,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:03:12,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:03:12,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:03:12,427 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:03:12,428 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 180 transitions. Second operand 10 states. [2020-02-10 23:03:12,428 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:03:12,428 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:03:12,428 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:03:43,869 INFO L129 PetriNetUnfolder]: 3107/12312 cut-off events. [2020-02-10 23:03:43,869 INFO L130 PetriNetUnfolder]: For 345874/350243 co-relation queries the response was YES. [2020-02-10 23:03:44,083 INFO L76 FinitePrefix]: Finished finitePrefix Result has 87023 conditions, 12312 events. 3107/12312 cut-off events. For 345874/350243 co-relation queries the response was YES. Maximal size of possible extension queue 1287. Compared 170645 event pairs. 1/12130 useless extension candidates. Maximal degree in co-relation 86898. Up to 2831 conditions per place. [2020-02-10 23:03:44,441 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 194 selfloop transitions, 61 changer transitions 1/272 dead transitions. [2020-02-10 23:03:44,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:03:44,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:03:44,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:03:44,443 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:03:44,443 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:03:44,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:03:44,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:03:44,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:03:44,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:03:44,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:03:44,445 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:03:44,445 INFO L178 Difference]: Start difference. First operand has 250 places, 180 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:03:44,447 INFO L206 Difference]: Finished difference. Result has 264 places, 191 transitions [2020-02-10 23:03:44,447 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=3935, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4309, PETRI_PLACES=264, PETRI_TRANSITIONS=191} [2020-02-10 23:03:44,447 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 264 places, 191 transitions [2020-02-10 23:03:53,023 INFO L129 PetriNetUnfolder]: 0/6314 cut-off events. [2020-02-10 23:03:53,023 INFO L130 PetriNetUnfolder]: For 133884/135012 co-relation queries the response was YES. [2020-02-10 23:03:53,108 INFO L76 FinitePrefix]: Finished finitePrefix Result has 34033 conditions, 6314 events. 0/6314 cut-off events. For 133884/135012 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 109316 event pairs. 23/5799 useless extension candidates. Maximal degree in co-relation 33903. Up to 641 conditions per place. [2020-02-10 23:03:53,108 INFO L82 GeneralOperation]: Start removeDead. Operand has 264 places, 191 transitions [2020-02-10 23:03:54,239 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 263 places, 191 transitions [2020-02-10 23:03:54,239 INFO L479 AbstractCegarLoop]: Abstraction has has 263 places, 191 transitions [2020-02-10 23:03:54,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:03:58,419 INFO L129 PetriNetUnfolder]: 0/5676 cut-off events. [2020-02-10 23:03:58,419 INFO L130 PetriNetUnfolder]: For 133938/135049 co-relation queries the response was YES. [2020-02-10 23:03:58,419 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:03:58,419 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] [2020-02-10 23:03:58,419 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_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]=== [2020-02-10 23:03:58,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:03:58,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1717023761, now seen corresponding path program 14 times [2020-02-10 23:03:58,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:03:58,420 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469887031] [2020-02-10 23:03:58,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:03:58,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:03:58,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:03:58,820 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469887031] [2020-02-10 23:03:58,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:03:58,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:03:58,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728588093] [2020-02-10 23:03:58,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:03:58,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:03:58,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:03:58,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:03:58,822 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:03:58,823 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 191 transitions. Second operand 10 states. [2020-02-10 23:03:58,823 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:03:58,823 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:03:58,823 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:04:50,944 INFO L129 PetriNetUnfolder]: 3196/14863 cut-off events. [2020-02-10 23:04:50,944 INFO L130 PetriNetUnfolder]: For 431156/435525 co-relation queries the response was YES. [2020-02-10 23:04:51,258 INFO L76 FinitePrefix]: Finished finitePrefix Result has 103156 conditions, 14863 events. 3196/14863 cut-off events. For 431156/435525 co-relation queries the response was YES. Maximal size of possible extension queue 1581. Compared 223521 event pairs. 1/14678 useless extension candidates. Maximal degree in co-relation 103025. Up to 3530 conditions per place. [2020-02-10 23:04:51,645 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 237 selfloop transitions, 62 changer transitions 2/317 dead transitions. [2020-02-10 23:04:51,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:04:51,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:04:51,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:04:51,646 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:04:51,646 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:04:51,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:04:51,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:04:51,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:04:51,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:04:51,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:04:51,648 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:04:51,648 INFO L178 Difference]: Start difference. First operand has 263 places, 191 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:04:51,651 INFO L206 Difference]: Finished difference. Result has 279 places, 217 transitions [2020-02-10 23:04:51,651 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=4309, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5217, PETRI_PLACES=279, PETRI_TRANSITIONS=217} [2020-02-10 23:04:51,652 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 279 places, 217 transitions [2020-02-10 23:05:06,820 INFO L129 PetriNetUnfolder]: 0/8099 cut-off events. [2020-02-10 23:05:06,821 INFO L130 PetriNetUnfolder]: For 198647/199986 co-relation queries the response was YES. [2020-02-10 23:05:06,944 INFO L76 FinitePrefix]: Finished finitePrefix Result has 45606 conditions, 8099 events. 0/8099 cut-off events. For 198647/199986 co-relation queries the response was YES. Maximal size of possible extension queue 960. Compared 146487 event pairs. 28/7454 useless extension candidates. Maximal degree in co-relation 45468. Up to 822 conditions per place. [2020-02-10 23:05:06,944 INFO L82 GeneralOperation]: Start removeDead. Operand has 279 places, 217 transitions [2020-02-10 23:05:07,364 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 278 places, 217 transitions [2020-02-10 23:05:07,364 INFO L479 AbstractCegarLoop]: Abstraction has has 278 places, 217 transitions [2020-02-10 23:05:07,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:05:13,960 INFO L129 PetriNetUnfolder]: 0/7280 cut-off events. [2020-02-10 23:05:13,960 INFO L130 PetriNetUnfolder]: For 199477/200963 co-relation queries the response was YES. [2020-02-10 23:05:13,960 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:05:13,961 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] [2020-02-10 23:05:13,961 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_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]=== [2020-02-10 23:05:13,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:05:13,961 INFO L82 PathProgramCache]: Analyzing trace with hash -70273577, now seen corresponding path program 15 times [2020-02-10 23:05:13,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:05:13,962 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62915348] [2020-02-10 23:05:13,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:05:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:05:14,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:05:14,386 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62915348] [2020-02-10 23:05:14,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:05:14,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:05:14,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652891802] [2020-02-10 23:05:14,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:05:14,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:05:14,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:05:14,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:05:14,392 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:05:14,392 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 217 transitions. Second operand 10 states. [2020-02-10 23:05:14,392 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:05:14,392 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:05:14,392 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:06:08,918 INFO L129 PetriNetUnfolder]: 3196/14832 cut-off events. [2020-02-10 23:06:08,919 INFO L130 PetriNetUnfolder]: For 489414/493783 co-relation queries the response was YES. [2020-02-10 23:06:09,257 INFO L76 FinitePrefix]: Finished finitePrefix Result has 108910 conditions, 14832 events. 3196/14832 cut-off events. For 489414/493783 co-relation queries the response was YES. Maximal size of possible extension queue 1580. Compared 222781 event pairs. 1/14652 useless extension candidates. Maximal degree in co-relation 108771. Up to 3530 conditions per place. [2020-02-10 23:06:09,665 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 243 selfloop transitions, 61 changer transitions 1/321 dead transitions. [2020-02-10 23:06:09,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:06:09,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:06:09,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:06:09,667 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:06:09,668 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:06:09,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:06:09,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:06:09,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:06:09,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:06:09,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:06:09,670 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:06:09,671 INFO L178 Difference]: Start difference. First operand has 278 places, 217 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:06:09,674 INFO L206 Difference]: Finished difference. Result has 290 places, 224 transitions [2020-02-10 23:06:09,674 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=5217, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5507, PETRI_PLACES=290, PETRI_TRANSITIONS=224} [2020-02-10 23:06:09,674 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 290 places, 224 transitions [2020-02-10 23:06:25,810 INFO L129 PetriNetUnfolder]: 0/8090 cut-off events. [2020-02-10 23:06:25,811 INFO L130 PetriNetUnfolder]: For 217282/218768 co-relation queries the response was YES. [2020-02-10 23:06:25,936 INFO L76 FinitePrefix]: Finished finitePrefix Result has 47026 conditions, 8090 events. 0/8090 cut-off events. For 217282/218768 co-relation queries the response was YES. Maximal size of possible extension queue 954. Compared 146306 event pairs. 42/7468 useless extension candidates. Maximal degree in co-relation 46884. Up to 821 conditions per place. [2020-02-10 23:06:25,937 INFO L82 GeneralOperation]: Start removeDead. Operand has 290 places, 224 transitions [2020-02-10 23:06:26,125 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 289 places, 224 transitions [2020-02-10 23:06:26,125 INFO L479 AbstractCegarLoop]: Abstraction has has 289 places, 224 transitions [2020-02-10 23:06:26,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:06:33,330 INFO L129 PetriNetUnfolder]: 0/7272 cut-off events. [2020-02-10 23:06:33,331 INFO L130 PetriNetUnfolder]: For 217255/218736 co-relation queries the response was YES. [2020-02-10 23:06:33,331 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:06:33,331 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] [2020-02-10 23:06:33,331 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_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]=== [2020-02-10 23:06:33,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:06:33,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1822942065, now seen corresponding path program 16 times [2020-02-10 23:06:33,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:06:33,332 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10135010] [2020-02-10 23:06:33,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:06:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:06:33,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:06:33,735 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10135010] [2020-02-10 23:06:33,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:06:33,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:06:33,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633773175] [2020-02-10 23:06:33,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:06:33,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:06:33,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:06:33,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:06:33,737 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:06:33,738 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 224 transitions. Second operand 10 states. [2020-02-10 23:06:33,738 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:06:33,738 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:06:33,738 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:07:31,883 INFO L129 PetriNetUnfolder]: 3196/14834 cut-off events. [2020-02-10 23:07:31,884 INFO L130 PetriNetUnfolder]: For 520598/524967 co-relation queries the response was YES. [2020-02-10 23:07:32,228 INFO L76 FinitePrefix]: Finished finitePrefix Result has 111490 conditions, 14834 events. 3196/14834 cut-off events. For 520598/524967 co-relation queries the response was YES. Maximal size of possible extension queue 1580. Compared 222870 event pairs. 1/14647 useless extension candidates. Maximal degree in co-relation 111347. Up to 3530 conditions per place. [2020-02-10 23:07:32,646 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 236 selfloop transitions, 61 changer transitions 1/314 dead transitions. [2020-02-10 23:07:32,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:07:32,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:07:32,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:07:32,648 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:07:32,648 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:07:32,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:07:32,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:07:32,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:07:32,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:07:32,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:07:32,650 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:07:32,650 INFO L178 Difference]: Start difference. First operand has 289 places, 224 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:07:32,653 INFO L206 Difference]: Finished difference. Result has 300 places, 226 transitions [2020-02-10 23:07:32,653 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=5507, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5747, PETRI_PLACES=300, PETRI_TRANSITIONS=226} [2020-02-10 23:07:32,654 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 300 places, 226 transitions [2020-02-10 23:07:48,840 INFO L129 PetriNetUnfolder]: 0/8080 cut-off events. [2020-02-10 23:07:48,840 INFO L130 PetriNetUnfolder]: For 236699/238172 co-relation queries the response was YES. [2020-02-10 23:07:48,966 INFO L76 FinitePrefix]: Finished finitePrefix Result has 48422 conditions, 8080 events. 0/8080 cut-off events. For 236699/238172 co-relation queries the response was YES. Maximal size of possible extension queue 957. Compared 146008 event pairs. 42/7459 useless extension candidates. Maximal degree in co-relation 48277. Up to 820 conditions per place. [2020-02-10 23:07:48,966 INFO L82 GeneralOperation]: Start removeDead. Operand has 300 places, 226 transitions [2020-02-10 23:07:49,159 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 299 places, 226 transitions [2020-02-10 23:07:49,159 INFO L479 AbstractCegarLoop]: Abstraction has has 299 places, 226 transitions [2020-02-10 23:07:49,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:07:55,603 INFO L129 PetriNetUnfolder]: 0/7263 cut-off events. [2020-02-10 23:07:55,603 INFO L130 PetriNetUnfolder]: For 237005/238506 co-relation queries the response was YES. [2020-02-10 23:07:55,603 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:07:55,603 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] [2020-02-10 23:07:55,603 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_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]=== [2020-02-10 23:07:55,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:07:55,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1261254667, now seen corresponding path program 17 times [2020-02-10 23:07:55,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:07:55,604 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233011192] [2020-02-10 23:07:55,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:07:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:07:55,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:07:55,982 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233011192] [2020-02-10 23:07:55,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:07:55,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:07:55,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375103538] [2020-02-10 23:07:55,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:07:55,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:07:55,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:07:55,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:07:55,985 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:07:55,985 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 226 transitions. Second operand 10 states. [2020-02-10 23:07:55,985 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:07:55,985 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:07:55,985 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:08:59,745 INFO L129 PetriNetUnfolder]: 3155/15390 cut-off events. [2020-02-10 23:08:59,746 INFO L130 PetriNetUnfolder]: For 565681/570050 co-relation queries the response was YES. [2020-02-10 23:09:00,119 INFO L76 FinitePrefix]: Finished finitePrefix Result has 116560 conditions, 15390 events. 3155/15390 cut-off events. For 565681/570050 co-relation queries the response was YES. Maximal size of possible extension queue 1618. Compared 235466 event pairs. 1/15203 useless extension candidates. Maximal degree in co-relation 116414. Up to 3530 conditions per place. [2020-02-10 23:09:00,559 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 247 selfloop transitions, 69 changer transitions 0/332 dead transitions. [2020-02-10 23:09:00,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:09:00,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:09:00,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:09:00,561 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:09:00,561 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:09:00,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:09:00,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:09:00,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:09:00,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:09:00,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:09:00,563 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:09:00,563 INFO L178 Difference]: Start difference. First operand has 299 places, 226 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:09:00,566 INFO L206 Difference]: Finished difference. Result has 313 places, 239 transitions [2020-02-10 23:09:00,566 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=5747, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6411, PETRI_PLACES=313, PETRI_TRANSITIONS=239} [2020-02-10 23:09:00,566 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 313 places, 239 transitions [2020-02-10 23:09:20,321 INFO L129 PetriNetUnfolder]: 0/8644 cut-off events. [2020-02-10 23:09:20,321 INFO L130 PetriNetUnfolder]: For 275936/277464 co-relation queries the response was YES. [2020-02-10 23:09:20,465 INFO L76 FinitePrefix]: Finished finitePrefix Result has 53431 conditions, 8644 events. 0/8644 cut-off events. For 275936/277464 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 157663 event pairs. 42/7979 useless extension candidates. Maximal degree in co-relation 53280. Up to 871 conditions per place. [2020-02-10 23:09:20,465 INFO L82 GeneralOperation]: Start removeDead. Operand has 313 places, 239 transitions [2020-02-10 23:09:20,680 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 313 places, 239 transitions [2020-02-10 23:09:20,681 INFO L479 AbstractCegarLoop]: Abstraction has has 313 places, 239 transitions [2020-02-10 23:09:20,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:09:27,927 INFO L129 PetriNetUnfolder]: 0/7777 cut-off events. [2020-02-10 23:09:27,927 INFO L130 PetriNetUnfolder]: For 275755/277264 co-relation queries the response was YES. [2020-02-10 23:09:27,927 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:09:27,927 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] [2020-02-10 23:09:27,928 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_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]=== [2020-02-10 23:09:27,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:09:27,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1184778579, now seen corresponding path program 18 times [2020-02-10 23:09:27,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:09:27,928 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331155533] [2020-02-10 23:09:27,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:09:27,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:09:28,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:09:28,335 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331155533] [2020-02-10 23:09:28,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:09:28,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:09:28,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136946203] [2020-02-10 23:09:28,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:09:28,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:09:28,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:09:28,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:09:28,337 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:09:28,337 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 239 transitions. Second operand 10 states. [2020-02-10 23:09:28,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:09:28,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:09:28,338 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:10:36,476 INFO L129 PetriNetUnfolder]: 3150/15454 cut-off events. [2020-02-10 23:10:36,477 INFO L130 PetriNetUnfolder]: For 616559/620928 co-relation queries the response was YES. [2020-02-10 23:10:36,857 INFO L76 FinitePrefix]: Finished finitePrefix Result has 121212 conditions, 15454 events. 3150/15454 cut-off events. For 616559/620928 co-relation queries the response was YES. Maximal size of possible extension queue 1634. Compared 236963 event pairs. 1/15262 useless extension candidates. Maximal degree in co-relation 121060. Up to 3530 conditions per place. [2020-02-10 23:10:37,309 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 251 selfloop transitions, 67 changer transitions 1/335 dead transitions. [2020-02-10 23:10:37,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:10:37,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:10:37,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:10:37,311 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:10:37,312 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:10:37,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:10:37,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:10:37,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:10:37,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:10:37,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:10:37,314 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:10:37,314 INFO L178 Difference]: Start difference. First operand has 313 places, 239 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:10:37,317 INFO L206 Difference]: Finished difference. Result has 327 places, 247 transitions [2020-02-10 23:10:37,318 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=6411, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6857, PETRI_PLACES=327, PETRI_TRANSITIONS=247} [2020-02-10 23:10:37,318 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 327 places, 247 transitions [2020-02-10 23:10:57,643 INFO L129 PetriNetUnfolder]: 0/8776 cut-off events. [2020-02-10 23:10:57,643 INFO L130 PetriNetUnfolder]: For 307142/308656 co-relation queries the response was YES. [2020-02-10 23:10:57,796 INFO L76 FinitePrefix]: Finished finitePrefix Result has 56030 conditions, 8776 events. 0/8776 cut-off events. For 307142/308656 co-relation queries the response was YES. Maximal size of possible extension queue 1037. Compared 160423 event pairs. 46/8117 useless extension candidates. Maximal degree in co-relation 55873. Up to 883 conditions per place. [2020-02-10 23:10:57,796 INFO L82 GeneralOperation]: Start removeDead. Operand has 327 places, 247 transitions [2020-02-10 23:10:58,015 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 326 places, 247 transitions [2020-02-10 23:10:58,015 INFO L479 AbstractCegarLoop]: Abstraction has has 326 places, 247 transitions [2020-02-10 23:10:58,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:11:05,938 INFO L129 PetriNetUnfolder]: 0/7897 cut-off events. [2020-02-10 23:11:05,938 INFO L130 PetriNetUnfolder]: For 306463/307945 co-relation queries the response was YES. [2020-02-10 23:11:05,938 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:11:05,938 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] [2020-02-10 23:11:05,938 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_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]=== [2020-02-10 23:11:05,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:11:05,939 INFO L82 PathProgramCache]: Analyzing trace with hash 424392023, now seen corresponding path program 19 times [2020-02-10 23:11:05,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:11:05,939 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148913229] [2020-02-10 23:11:05,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:11:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:11:06,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:11:06,332 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148913229] [2020-02-10 23:11:06,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:11:06,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:11:06,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308998577] [2020-02-10 23:11:06,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:11:06,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:11:06,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:11:06,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:11:06,334 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:11:06,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 247 transitions. Second operand 10 states. [2020-02-10 23:11:06,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:11:06,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:11:06,335 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:12:15,473 INFO L129 PetriNetUnfolder]: 3150/14877 cut-off events. [2020-02-10 23:12:15,473 INFO L130 PetriNetUnfolder]: For 670843/674500 co-relation queries the response was YES. [2020-02-10 23:12:15,862 INFO L76 FinitePrefix]: Finished finitePrefix Result has 122970 conditions, 14877 events. 3150/14877 cut-off events. For 670843/674500 co-relation queries the response was YES. Maximal size of possible extension queue 1608. Compared 224979 event pairs. 3/14665 useless extension candidates. Maximal degree in co-relation 122812. Up to 4180 conditions per place. [2020-02-10 23:12:16,431 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 328 selfloop transitions, 67 changer transitions 3/414 dead transitions. [2020-02-10 23:12:16,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:12:16,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:12:16,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:12:16,433 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:12:16,433 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:12:16,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:12:16,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:12:16,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:12:16,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:12:16,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:12:16,436 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:12:16,436 INFO L178 Difference]: Start difference. First operand has 326 places, 247 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:12:16,440 INFO L206 Difference]: Finished difference. Result has 342 places, 256 transitions [2020-02-10 23:12:16,441 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=6857, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7365, PETRI_PLACES=342, PETRI_TRANSITIONS=256} [2020-02-10 23:12:16,441 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 342 places, 256 transitions [2020-02-10 23:12:39,835 INFO L129 PetriNetUnfolder]: 0/8769 cut-off events. [2020-02-10 23:12:39,835 INFO L130 PetriNetUnfolder]: For 337813/339486 co-relation queries the response was YES. [2020-02-10 23:12:39,991 INFO L76 FinitePrefix]: Finished finitePrefix Result has 57738 conditions, 8769 events. 0/8769 cut-off events. For 337813/339486 co-relation queries the response was YES. Maximal size of possible extension queue 1035. Compared 160437 event pairs. 41/8100 useless extension candidates. Maximal degree in co-relation 57573. Up to 882 conditions per place. [2020-02-10 23:12:39,991 INFO L82 GeneralOperation]: Start removeDead. Operand has 342 places, 256 transitions [2020-02-10 23:12:40,223 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 341 places, 256 transitions [2020-02-10 23:12:40,223 INFO L479 AbstractCegarLoop]: Abstraction has has 341 places, 256 transitions [2020-02-10 23:12:40,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:12:48,014 INFO L129 PetriNetUnfolder]: 0/7891 cut-off events. [2020-02-10 23:12:48,015 INFO L130 PetriNetUnfolder]: For 336287/337809 co-relation queries the response was YES. [2020-02-10 23:12:48,015 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:12:48,015 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] [2020-02-10 23:12:48,015 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_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]=== [2020-02-10 23:12:48,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:12:48,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1852027069, now seen corresponding path program 20 times [2020-02-10 23:12:48,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:12:48,015 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055791113] [2020-02-10 23:12:48,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:12:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:12:48,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:12:48,402 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055791113] [2020-02-10 23:12:48,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:12:48,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:12:48,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252783062] [2020-02-10 23:12:48,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:12:48,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:12:48,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:12:48,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:12:48,404 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:12:48,404 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 256 transitions. Second operand 10 states. [2020-02-10 23:12:48,404 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:12:48,404 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:12:48,404 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2020-02-10 23:14:12,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:14:12,629 WARN L544 AbstractCegarLoop]: Verification canceled [2020-02-10 23:14:12,633 WARN L227 ceAbstractionStarter]: Timeout [2020-02-10 23:14:12,633 INFO L202 PluginConnector]: Adding new model example_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 11:14:12 BasicIcfg [2020-02-10 23:14:12,633 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-02-10 23:14:12,635 INFO L168 Benchmark]: Toolchain (without parser) took 840962.67 ms. Allocated memory was 145.2 MB in the beginning and 3.5 GB in the end (delta: 3.3 GB). Free memory was 120.4 MB in the beginning and 1.1 GB in the end (delta: -985.3 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2020-02-10 23:14:12,635 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.44 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-02-10 23:14:12,635 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.92 ms. Allocated memory is still 145.2 MB. Free memory was 120.2 MB in the beginning and 118.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-02-10 23:14:12,636 INFO L168 Benchmark]: Boogie Preprocessor took 19.57 ms. Allocated memory is still 145.2 MB. Free memory was 118.4 MB in the beginning and 117.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-02-10 23:14:12,636 INFO L168 Benchmark]: RCFGBuilder took 369.73 ms. Allocated memory is still 145.2 MB. Free memory was 117.3 MB in the beginning and 103.9 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-02-10 23:14:12,637 INFO L168 Benchmark]: TraceAbstraction took 840532.22 ms. Allocated memory was 145.2 MB in the beginning and 3.5 GB in the end (delta: 3.3 GB). Free memory was 103.4 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2020-02-10 23:14:12,639 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 0.44 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 33.92 ms. Allocated memory is still 145.2 MB. Free memory was 120.2 MB in the beginning and 118.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 19.57 ms. Allocated memory is still 145.2 MB. Free memory was 118.4 MB in the beginning and 117.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 369.73 ms. Allocated memory is still 145.2 MB. Free memory was 117.3 MB in the beginning and 103.9 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 840532.22 ms. Allocated memory was 145.2 MB in the beginning and 3.5 GB in the end (delta: 3.3 GB). Free memory was 103.4 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.8s, 58 ProgramPointsBefore, 50 ProgramPointsAfterwards, 89 TransitionsBefore, 81 TransitionsAfterwards, 1904 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 504 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 532 CheckedPairsTotal, 8 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 29]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 29). Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (10states, 89/107 universal loopers) in iteration 27,while PetriNetUnfolder was constructing finite prefix that currently has 133244 conditions, 16487 events (3114/16486 cut-off events. For 757596/763312 co-relation queries the response was YES. Maximal size of possible extension queue 1760. Compared 260829 event pairs. 2/16348 useless extension candidates. Maximal degree in co-relation 133078. Up to 3529 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. Result: TIMEOUT, OverallTime: 840.2s, OverallIterations: 27, TraceHistogramMax: 1, AutomataDifference: 610.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 722 SDtfs, 729 SDslu, 624 SDs, 0 SdLazy, 1350 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 221 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 9.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=256occurred in iteration=26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 156.8s AutomataMinimizationTime, 26 MinimizatonAttempts, 17 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 9.0s InterpolantComputationTime, 675 NumberOfCodeBlocks, 675 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 648 ConstructedInterpolants, 0 QuantifiedInterpolants, 302232 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 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