/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/showcase/Bakery.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-29 03:55:26,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-29 03:55:26,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-29 03:55:26,708 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-29 03:55:26,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-29 03:55:26,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-29 03:55:26,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-29 03:55:26,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-29 03:55:26,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-29 03:55:26,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-29 03:55:26,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-29 03:55:26,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2021-04-29 03:55:26,757 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-RepeatedSemanticLbeWithPredicates.epf [2021-04-29 03:55:26,784 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-29 03:55:26,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-29 03:55:26,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-29 03:55:26,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-29 03:55:26,786 INFO L138 SettingsManager]: * Use SBE=true [2021-04-29 03:55:26,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-29 03:55:26,787 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-29 03:55:26,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-29 03:55:26,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-29 03:55:26,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-29 03:55:26,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-29 03:55:26,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-29 03:55:26,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-29 03:55:26,789 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-29 03:55:26,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-29 03:55:26,789 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-29 03:55:26,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-29 03:55:26,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-29 03:55:26,790 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-29 03:55:26,790 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-29 03:55:26,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-29 03:55:26,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 03:55:26,791 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-29 03:55:26,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-29 03:55:26,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-29 03:55:26,791 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-29 03:55:26,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-29 03:55:26,792 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-29 03:55:26,792 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-29 03:55:26,792 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-29 03:55:26,792 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-29 03:55:27,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-29 03:55:27,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-29 03:55:27,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-29 03:55:27,233 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-04-29 03:55:27,235 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-04-29 03:55:27,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Bakery.bpl [2021-04-29 03:55:27,238 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Bakery.bpl' [2021-04-29 03:55:27,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-29 03:55:27,319 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-29 03:55:27,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-29 03:55:27,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-29 03:55:27,321 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-29 03:55:27,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:27" (1/1) ... [2021-04-29 03:55:27,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:27" (1/1) ... [2021-04-29 03:55:27,356 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-29 03:55:27,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-29 03:55:27,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-29 03:55:27,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-29 03:55:27,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:27" (1/1) ... [2021-04-29 03:55:27,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:27" (1/1) ... [2021-04-29 03:55:27,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:27" (1/1) ... [2021-04-29 03:55:27,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:27" (1/1) ... [2021-04-29 03:55:27,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:27" (1/1) ... [2021-04-29 03:55:27,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:27" (1/1) ... [2021-04-29 03:55:27,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:27" (1/1) ... [2021-04-29 03:55:27,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-29 03:55:27,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-29 03:55:27,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-29 03:55:27,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-29 03:55:27,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:27" (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 [2021-04-29 03:55:27,489 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process0 given in one single declaration [2021-04-29 03:55:27,489 INFO L130 BoogieDeclarations]: Found specification of procedure Process0 [2021-04-29 03:55:27,489 INFO L138 BoogieDeclarations]: Found implementation of procedure Process0 [2021-04-29 03:55:27,489 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process1 given in one single declaration [2021-04-29 03:55:27,490 INFO L130 BoogieDeclarations]: Found specification of procedure Process1 [2021-04-29 03:55:27,490 INFO L138 BoogieDeclarations]: Found implementation of procedure Process1 [2021-04-29 03:55:27,490 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-04-29 03:55:27,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-29 03:55:27,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-29 03:55:27,491 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-29 03:55:27,719 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-29 03:55:27,720 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-04-29 03:55:27,721 INFO L202 PluginConnector]: Adding new model Bakery.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 03:55:27 BoogieIcfgContainer [2021-04-29 03:55:27,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-29 03:55:27,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-29 03:55:27,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-29 03:55:27,727 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-29 03:55:27,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:27" (1/2) ... [2021-04-29 03:55:27,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b495fb6 and model type Bakery.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 03:55:27, skipping insertion in model container [2021-04-29 03:55:27,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Bakery.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 03:55:27" (2/2) ... [2021-04-29 03:55:27,731 INFO L111 eAbstractionObserver]: Analyzing ICFG Bakery.bpl [2021-04-29 03:55:27,739 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-29 03:55:27,744 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-04-29 03:55:27,745 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-29 03:55:27,784 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-29 03:55:27,813 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-04-29 03:55:27,862 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-29 03:55:27,862 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-29 03:55:27,862 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-29 03:55:27,863 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-29 03:55:27,863 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-29 03:55:27,863 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-29 03:55:27,863 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-29 03:55:27,863 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-29 03:55:27,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 26 transitions, 62 flow [2021-04-29 03:55:27,926 INFO L129 PetriNetUnfolder]: 2/24 cut-off events. [2021-04-29 03:55:27,926 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 03:55:27,933 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 24 events. 2/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 45 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2021-04-29 03:55:27,933 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 26 transitions, 62 flow [2021-04-29 03:55:27,940 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 24 transitions, 54 flow [2021-04-29 03:55:27,942 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:55:27,972 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 24 transitions, 54 flow [2021-04-29 03:55:27,979 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 24 transitions, 54 flow [2021-04-29 03:55:27,983 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 24 transitions, 54 flow [2021-04-29 03:55:27,998 INFO L129 PetriNetUnfolder]: 2/24 cut-off events. [2021-04-29 03:55:27,998 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 03:55:27,999 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 24 events. 2/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 46 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2021-04-29 03:55:28,003 INFO L146 LiptonReduction]: Number of co-enabled transitions 216 [2021-04-29 03:55:28,821 INFO L158 LiptonReduction]: Checked pairs total: 735 [2021-04-29 03:55:28,821 INFO L160 LiptonReduction]: Total number of compositions: 9 [2021-04-29 03:55:28,825 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 885 [2021-04-29 03:55:28,841 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-04-29 03:55:28,841 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 03:55:28,841 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:55:28,842 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-04-29 03:55:28,843 INFO L428 AbstractCegarLoop]: === Iteration 1 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process0Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-04-29 03:55:28,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:55:28,849 INFO L82 PathProgramCache]: Analyzing trace with hash 3497871, now seen corresponding path program 1 times [2021-04-29 03:55:28,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:55:28,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975009410] [2021-04-29 03:55:28,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:55:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:55:28,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:28,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:55:29,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:29,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-29 03:55:29,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:55:29,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975009410] [2021-04-29 03:55:29,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:55:29,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-29 03:55:29,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96179815] [2021-04-29 03:55:29,041 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 03:55:29,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:55:29,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 03:55:29,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-29 03:55:29,061 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2021-04-29 03:55:29,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 54 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:29,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:55:29,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2021-04-29 03:55:29,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:55:29,167 INFO L129 PetriNetUnfolder]: 47/127 cut-off events. [2021-04-29 03:55:29,167 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 03:55:29,168 INFO L84 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 127 events. 47/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 523 event pairs, 24 based on Foata normal form. 5/85 useless extension candidates. Maximal degree in co-relation 222. Up to 59 conditions per place. [2021-04-29 03:55:29,171 INFO L132 encePairwiseOnDemand]: 24/35 looper letters, 19 selfloop transitions, 6 changer transitions 3/35 dead transitions. [2021-04-29 03:55:29,171 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 35 transitions, 130 flow [2021-04-29 03:55:29,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 03:55:29,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 03:55:29,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2021-04-29 03:55:29,186 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7428571428571429 [2021-04-29 03:55:29,187 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 104 transitions. [2021-04-29 03:55:29,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 104 transitions. [2021-04-29 03:55:29,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:55:29,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 104 transitions. [2021-04-29 03:55:29,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:29,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:29,200 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:29,202 INFO L185 Difference]: Start difference. First operand has 29 places, 24 transitions, 54 flow. Second operand 4 states and 104 transitions. [2021-04-29 03:55:29,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 35 transitions, 130 flow [2021-04-29 03:55:29,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 35 transitions, 128 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-29 03:55:29,209 INFO L241 Difference]: Finished difference. Result has 28 places, 23 transitions, 82 flow [2021-04-29 03:55:29,211 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2021-04-29 03:55:29,212 INFO L343 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2021-04-29 03:55:29,213 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:55:29,213 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 23 transitions, 82 flow [2021-04-29 03:55:29,213 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 23 transitions, 82 flow [2021-04-29 03:55:29,214 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 26 places, 23 transitions, 82 flow [2021-04-29 03:55:29,221 INFO L129 PetriNetUnfolder]: 5/37 cut-off events. [2021-04-29 03:55:29,222 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-04-29 03:55:29,222 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 37 events. 5/37 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 105 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 60. Up to 9 conditions per place. [2021-04-29 03:55:29,223 INFO L146 LiptonReduction]: Number of co-enabled transitions 160 [2021-04-29 03:55:29,257 INFO L158 LiptonReduction]: Checked pairs total: 99 [2021-04-29 03:55:29,257 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:55:29,257 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 44 [2021-04-29 03:55:29,260 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 23 transitions, 82 flow [2021-04-29 03:55:29,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:29,260 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:55:29,260 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-04-29 03:55:29,261 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-29 03:55:29,261 INFO L428 AbstractCegarLoop]: === Iteration 2 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process0Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-04-29 03:55:29,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:55:29,262 INFO L82 PathProgramCache]: Analyzing trace with hash 108453767, now seen corresponding path program 1 times [2021-04-29 03:55:29,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:55:29,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156344648] [2021-04-29 03:55:29,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:55:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:55:29,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:29,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:55:29,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:55:29,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156344648] [2021-04-29 03:55:29,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:55:29,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-29 03:55:29,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679419546] [2021-04-29 03:55:29,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 03:55:29,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:55:29,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 03:55:29,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 03:55:29,290 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2021-04-29 03:55:29,291 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 23 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:29,291 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:55:29,291 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2021-04-29 03:55:29,291 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:55:29,330 INFO L129 PetriNetUnfolder]: 37/122 cut-off events. [2021-04-29 03:55:29,330 INFO L130 PetriNetUnfolder]: For 17/21 co-relation queries the response was YES. [2021-04-29 03:55:29,331 INFO L84 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 122 events. 37/122 cut-off events. For 17/21 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 499 event pairs, 8 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 251. Up to 49 conditions per place. [2021-04-29 03:55:29,333 INFO L132 encePairwiseOnDemand]: 26/35 looper letters, 8 selfloop transitions, 7 changer transitions 0/29 dead transitions. [2021-04-29 03:55:29,333 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 126 flow [2021-04-29 03:55:29,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 03:55:29,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 03:55:29,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2021-04-29 03:55:29,335 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2021-04-29 03:55:29,335 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 65 transitions. [2021-04-29 03:55:29,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 65 transitions. [2021-04-29 03:55:29,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:55:29,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 65 transitions. [2021-04-29 03:55:29,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:29,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:29,338 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:29,338 INFO L185 Difference]: Start difference. First operand has 26 places, 23 transitions, 82 flow. Second operand 3 states and 65 transitions. [2021-04-29 03:55:29,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 126 flow [2021-04-29 03:55:29,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 29 transitions, 126 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-04-29 03:55:29,341 INFO L241 Difference]: Finished difference. Result has 30 places, 29 transitions, 140 flow [2021-04-29 03:55:29,341 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=30, PETRI_TRANSITIONS=29} [2021-04-29 03:55:29,342 INFO L343 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2021-04-29 03:55:29,342 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:55:29,342 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 29 transitions, 140 flow [2021-04-29 03:55:29,343 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 29 transitions, 140 flow [2021-04-29 03:55:29,343 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 29 transitions, 140 flow [2021-04-29 03:55:29,359 INFO L129 PetriNetUnfolder]: 38/122 cut-off events. [2021-04-29 03:55:29,360 INFO L130 PetriNetUnfolder]: For 28/35 co-relation queries the response was YES. [2021-04-29 03:55:29,361 INFO L84 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 122 events. 38/122 cut-off events. For 28/35 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 509 event pairs, 2 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 296. Up to 50 conditions per place. [2021-04-29 03:55:29,363 INFO L146 LiptonReduction]: Number of co-enabled transitions 140 [2021-04-29 03:55:29,367 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 03:55:29,367 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:55:29,367 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 25 [2021-04-29 03:55:29,369 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 29 transitions, 140 flow [2021-04-29 03:55:29,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:29,369 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:55:29,370 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 03:55:29,370 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-29 03:55:29,370 INFO L428 AbstractCegarLoop]: === Iteration 3 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process0Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-04-29 03:55:29,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:55:29,371 INFO L82 PathProgramCache]: Analyzing trace with hash 540180968, now seen corresponding path program 1 times [2021-04-29 03:55:29,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:55:29,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457709996] [2021-04-29 03:55:29,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:55:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:55:29,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:29,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:55:29,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:29,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:55:29,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:29,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-29 03:55:29,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:29,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:29,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:55:29,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457709996] [2021-04-29 03:55:29,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:55:29,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 03:55:29,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360291886] [2021-04-29 03:55:29,415 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 03:55:29,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:55:29,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 03:55:29,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-29 03:55:29,417 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2021-04-29 03:55:29,417 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 29 transitions, 140 flow. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:29,417 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:55:29,417 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2021-04-29 03:55:29,418 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:55:29,519 INFO L129 PetriNetUnfolder]: 57/171 cut-off events. [2021-04-29 03:55:29,520 INFO L130 PetriNetUnfolder]: For 103/121 co-relation queries the response was YES. [2021-04-29 03:55:29,521 INFO L84 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 171 events. 57/171 cut-off events. For 103/121 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 540 event pairs, 14 based on Foata normal form. 33/201 useless extension candidates. Maximal degree in co-relation 500. Up to 61 conditions per place. [2021-04-29 03:55:29,523 INFO L132 encePairwiseOnDemand]: 24/35 looper letters, 16 selfloop transitions, 17 changer transitions 4/48 dead transitions. [2021-04-29 03:55:29,524 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 48 transitions, 294 flow [2021-04-29 03:55:29,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 03:55:29,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 03:55:29,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2021-04-29 03:55:29,527 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2021-04-29 03:55:29,527 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 130 transitions. [2021-04-29 03:55:29,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 130 transitions. [2021-04-29 03:55:29,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:55:29,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 130 transitions. [2021-04-29 03:55:29,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:29,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:29,535 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:29,535 INFO L185 Difference]: Start difference. First operand has 30 places, 29 transitions, 140 flow. Second operand 6 states and 130 transitions. [2021-04-29 03:55:29,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 48 transitions, 294 flow [2021-04-29 03:55:29,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 48 transitions, 278 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-29 03:55:29,543 INFO L241 Difference]: Finished difference. Result has 37 places, 40 transitions, 259 flow [2021-04-29 03:55:29,543 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=259, PETRI_PLACES=37, PETRI_TRANSITIONS=40} [2021-04-29 03:55:29,544 INFO L343 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2021-04-29 03:55:29,544 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:55:29,545 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 40 transitions, 259 flow [2021-04-29 03:55:29,546 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 40 transitions, 259 flow [2021-04-29 03:55:29,547 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 40 transitions, 259 flow [2021-04-29 03:55:29,570 INFO L129 PetriNetUnfolder]: 45/147 cut-off events. [2021-04-29 03:55:29,570 INFO L130 PetriNetUnfolder]: For 128/147 co-relation queries the response was YES. [2021-04-29 03:55:29,572 INFO L84 FinitePrefix]: Finished finitePrefix Result has 442 conditions, 147 events. 45/147 cut-off events. For 128/147 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 444 event pairs, 5 based on Foata normal form. 8/145 useless extension candidates. Maximal degree in co-relation 425. Up to 55 conditions per place. [2021-04-29 03:55:29,574 INFO L146 LiptonReduction]: Number of co-enabled transitions 184 [2021-04-29 03:55:29,581 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 03:55:29,581 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:55:29,582 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 38 [2021-04-29 03:55:29,588 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 40 transitions, 259 flow [2021-04-29 03:55:29,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:29,589 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:55:29,589 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 03:55:29,590 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-29 03:55:29,590 INFO L428 AbstractCegarLoop]: === Iteration 4 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process0Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-04-29 03:55:29,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:55:29,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1130850008, now seen corresponding path program 2 times [2021-04-29 03:55:29,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:55:29,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827584296] [2021-04-29 03:55:29,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:55:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:55:29,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:29,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:55:29,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:29,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:55:29,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:29,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-29 03:55:29,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:55:29,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827584296] [2021-04-29 03:55:29,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:55:29,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 03:55:29,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283790323] [2021-04-29 03:55:29,651 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 03:55:29,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:55:29,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 03:55:29,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-29 03:55:29,653 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2021-04-29 03:55:29,654 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 40 transitions, 259 flow. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:29,654 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:55:29,654 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2021-04-29 03:55:29,654 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:55:29,755 INFO L129 PetriNetUnfolder]: 70/214 cut-off events. [2021-04-29 03:55:29,756 INFO L130 PetriNetUnfolder]: For 402/430 co-relation queries the response was YES. [2021-04-29 03:55:29,757 INFO L84 FinitePrefix]: Finished finitePrefix Result has 737 conditions, 214 events. 70/214 cut-off events. For 402/430 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 898 event pairs, 16 based on Foata normal form. 39/247 useless extension candidates. Maximal degree in co-relation 718. Up to 76 conditions per place. [2021-04-29 03:55:29,759 INFO L132 encePairwiseOnDemand]: 27/35 looper letters, 26 selfloop transitions, 15 changer transitions 4/56 dead transitions. [2021-04-29 03:55:29,759 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 56 transitions, 427 flow [2021-04-29 03:55:29,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 03:55:29,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 03:55:29,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2021-04-29 03:55:29,762 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2021-04-29 03:55:29,762 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 115 transitions. [2021-04-29 03:55:29,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 115 transitions. [2021-04-29 03:55:29,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:55:29,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 115 transitions. [2021-04-29 03:55:29,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:29,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:29,765 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:29,766 INFO L185 Difference]: Start difference. First operand has 37 places, 40 transitions, 259 flow. Second operand 5 states and 115 transitions. [2021-04-29 03:55:29,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 56 transitions, 427 flow [2021-04-29 03:55:29,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 56 transitions, 402 flow, removed 11 selfloop flow, removed 1 redundant places. [2021-04-29 03:55:29,773 INFO L241 Difference]: Finished difference. Result has 44 places, 40 transitions, 304 flow [2021-04-29 03:55:29,773 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2021-04-29 03:55:29,773 INFO L343 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2021-04-29 03:55:29,774 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:55:29,774 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 40 transitions, 304 flow [2021-04-29 03:55:29,774 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 40 transitions, 304 flow [2021-04-29 03:55:29,775 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 40 transitions, 304 flow [2021-04-29 03:55:29,798 INFO L129 PetriNetUnfolder]: 50/166 cut-off events. [2021-04-29 03:55:29,799 INFO L130 PetriNetUnfolder]: For 269/295 co-relation queries the response was YES. [2021-04-29 03:55:29,800 INFO L84 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 166 events. 50/166 cut-off events. For 269/295 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 659 event pairs, 6 based on Foata normal form. 10/169 useless extension candidates. Maximal degree in co-relation 532. Up to 62 conditions per place. [2021-04-29 03:55:29,803 INFO L146 LiptonReduction]: Number of co-enabled transitions 196 [2021-04-29 03:55:29,808 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 03:55:29,809 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:55:29,809 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 35 [2021-04-29 03:55:29,810 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 304 flow [2021-04-29 03:55:29,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:29,811 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:55:29,811 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 03:55:29,811 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-29 03:55:29,812 INFO L428 AbstractCegarLoop]: === Iteration 5 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process0Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-04-29 03:55:29,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:55:29,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1750350231, now seen corresponding path program 1 times [2021-04-29 03:55:29,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:55:29,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668471709] [2021-04-29 03:55:29,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:55:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:55:29,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:29,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:55:29,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:29,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:55:29,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:29,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:55:29,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:29,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-29 03:55:29,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:29,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:29,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:55:29,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668471709] [2021-04-29 03:55:29,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:55:29,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 03:55:29,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806103795] [2021-04-29 03:55:29,873 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 03:55:29,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:55:29,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 03:55:29,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-04-29 03:55:29,875 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2021-04-29 03:55:29,875 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 304 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:29,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:55:29,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2021-04-29 03:55:29,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:55:29,977 INFO L129 PetriNetUnfolder]: 48/156 cut-off events. [2021-04-29 03:55:29,978 INFO L130 PetriNetUnfolder]: For 518/540 co-relation queries the response was YES. [2021-04-29 03:55:29,979 INFO L84 FinitePrefix]: Finished finitePrefix Result has 650 conditions, 156 events. 48/156 cut-off events. For 518/540 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 553 event pairs, 9 based on Foata normal form. 26/179 useless extension candidates. Maximal degree in co-relation 626. Up to 52 conditions per place. [2021-04-29 03:55:29,980 INFO L132 encePairwiseOnDemand]: 27/35 looper letters, 17 selfloop transitions, 20 changer transitions 5/53 dead transitions. [2021-04-29 03:55:29,981 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 53 transitions, 472 flow [2021-04-29 03:55:29,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-29 03:55:29,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-04-29 03:55:29,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 146 transitions. [2021-04-29 03:55:29,983 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5959183673469388 [2021-04-29 03:55:29,983 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 146 transitions. [2021-04-29 03:55:29,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 146 transitions. [2021-04-29 03:55:29,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:55:29,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 146 transitions. [2021-04-29 03:55:29,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:29,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 35.0) internal successors, (280), 8 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:29,988 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 35.0) internal successors, (280), 8 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:29,988 INFO L185 Difference]: Start difference. First operand has 44 places, 40 transitions, 304 flow. Second operand 7 states and 146 transitions. [2021-04-29 03:55:29,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 53 transitions, 472 flow [2021-04-29 03:55:29,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 53 transitions, 445 flow, removed 11 selfloop flow, removed 1 redundant places. [2021-04-29 03:55:29,995 INFO L241 Difference]: Finished difference. Result has 50 places, 42 transitions, 354 flow [2021-04-29 03:55:29,995 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=354, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2021-04-29 03:55:29,996 INFO L343 CegarLoopForPetriNet]: 29 programPoint places, 21 predicate places. [2021-04-29 03:55:29,996 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:55:29,996 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 50 places, 42 transitions, 354 flow [2021-04-29 03:55:29,997 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 50 places, 42 transitions, 354 flow [2021-04-29 03:55:29,997 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 50 places, 42 transitions, 354 flow [2021-04-29 03:55:30,013 INFO L129 PetriNetUnfolder]: 32/116 cut-off events. [2021-04-29 03:55:30,014 INFO L130 PetriNetUnfolder]: For 259/278 co-relation queries the response was YES. [2021-04-29 03:55:30,015 INFO L84 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 116 events. 32/116 cut-off events. For 259/278 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 359 event pairs, 3 based on Foata normal form. 14/125 useless extension candidates. Maximal degree in co-relation 397. Up to 40 conditions per place. [2021-04-29 03:55:30,017 INFO L146 LiptonReduction]: Number of co-enabled transitions 174 [2021-04-29 03:55:30,022 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 03:55:30,022 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:55:30,023 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 27 [2021-04-29 03:55:30,024 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 354 flow [2021-04-29 03:55:30,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:30,024 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:55:30,025 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 03:55:30,025 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-29 03:55:30,025 INFO L428 AbstractCegarLoop]: === Iteration 6 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process0Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-04-29 03:55:30,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:55:30,026 INFO L82 PathProgramCache]: Analyzing trace with hash -2073621355, now seen corresponding path program 2 times [2021-04-29 03:55:30,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:55:30,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577444660] [2021-04-29 03:55:30,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:55:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:55:30,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:30,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:30,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:30,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:55:30,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:30,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:55:30,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:30,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-29 03:55:30,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:30,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:30,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:55:30,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577444660] [2021-04-29 03:55:30,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:55:30,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 03:55:30,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839595850] [2021-04-29 03:55:30,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 03:55:30,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:55:30,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 03:55:30,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-29 03:55:30,079 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2021-04-29 03:55:30,080 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 354 flow. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:30,080 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:55:30,080 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2021-04-29 03:55:30,080 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:55:30,162 INFO L129 PetriNetUnfolder]: 46/154 cut-off events. [2021-04-29 03:55:30,163 INFO L130 PetriNetUnfolder]: For 700/725 co-relation queries the response was YES. [2021-04-29 03:55:30,164 INFO L84 FinitePrefix]: Finished finitePrefix Result has 671 conditions, 154 events. 46/154 cut-off events. For 700/725 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 517 event pairs, 4 based on Foata normal form. 32/184 useless extension candidates. Maximal degree in co-relation 645. Up to 51 conditions per place. [2021-04-29 03:55:30,166 INFO L132 encePairwiseOnDemand]: 27/35 looper letters, 21 selfloop transitions, 16 changer transitions 6/54 dead transitions. [2021-04-29 03:55:30,166 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 54 transitions, 518 flow [2021-04-29 03:55:30,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 03:55:30,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 03:55:30,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2021-04-29 03:55:30,168 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6342857142857142 [2021-04-29 03:55:30,168 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 111 transitions. [2021-04-29 03:55:30,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 111 transitions. [2021-04-29 03:55:30,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:55:30,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 111 transitions. [2021-04-29 03:55:30,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:30,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:30,171 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:30,172 INFO L185 Difference]: Start difference. First operand has 50 places, 42 transitions, 354 flow. Second operand 5 states and 111 transitions. [2021-04-29 03:55:30,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 54 transitions, 518 flow [2021-04-29 03:55:30,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 54 transitions, 453 flow, removed 12 selfloop flow, removed 6 redundant places. [2021-04-29 03:55:30,178 INFO L241 Difference]: Finished difference. Result has 49 places, 42 transitions, 346 flow [2021-04-29 03:55:30,179 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=346, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2021-04-29 03:55:30,179 INFO L343 CegarLoopForPetriNet]: 29 programPoint places, 20 predicate places. [2021-04-29 03:55:30,179 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:55:30,180 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 42 transitions, 346 flow [2021-04-29 03:55:30,180 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 42 transitions, 346 flow [2021-04-29 03:55:30,181 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 42 transitions, 346 flow [2021-04-29 03:55:30,196 INFO L129 PetriNetUnfolder]: 29/110 cut-off events. [2021-04-29 03:55:30,196 INFO L130 PetriNetUnfolder]: For 253/274 co-relation queries the response was YES. [2021-04-29 03:55:30,197 INFO L84 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 110 events. 29/110 cut-off events. For 253/274 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 305 event pairs, 3 based on Foata normal form. 17/123 useless extension candidates. Maximal degree in co-relation 368. Up to 40 conditions per place. [2021-04-29 03:55:30,199 INFO L146 LiptonReduction]: Number of co-enabled transitions 154 [2021-04-29 03:55:30,204 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 03:55:30,204 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:55:30,205 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 26 [2021-04-29 03:55:30,206 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 346 flow [2021-04-29 03:55:30,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:30,206 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:55:30,207 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 03:55:30,207 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-29 03:55:30,207 INFO L428 AbstractCegarLoop]: === Iteration 7 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process0Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-04-29 03:55:30,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:55:30,208 INFO L82 PathProgramCache]: Analyzing trace with hash 94261156, now seen corresponding path program 1 times [2021-04-29 03:55:30,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:55:30,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608962188] [2021-04-29 03:55:30,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:55:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:55:30,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:30,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:30,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:30,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:55:30,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:30,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:55:30,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:30,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:55:30,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:30,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-29 03:55:30,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:55:30,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608962188] [2021-04-29 03:55:30,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:55:30,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 03:55:30,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457832891] [2021-04-29 03:55:30,266 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 03:55:30,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:55:30,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 03:55:30,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-04-29 03:55:30,268 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2021-04-29 03:55:30,269 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 346 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:30,269 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:55:30,269 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2021-04-29 03:55:30,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:55:30,343 INFO L129 PetriNetUnfolder]: 20/85 cut-off events. [2021-04-29 03:55:30,344 INFO L130 PetriNetUnfolder]: For 424/439 co-relation queries the response was YES. [2021-04-29 03:55:30,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 85 events. 20/85 cut-off events. For 424/439 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 207 event pairs, 1 based on Foata normal form. 21/106 useless extension candidates. Maximal degree in co-relation 374. Up to 27 conditions per place. [2021-04-29 03:55:30,345 INFO L132 encePairwiseOnDemand]: 27/35 looper letters, 0 selfloop transitions, 0 changer transitions 45/45 dead transitions. [2021-04-29 03:55:30,345 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 455 flow [2021-04-29 03:55:30,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-29 03:55:30,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-04-29 03:55:30,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2021-04-29 03:55:30,347 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5673469387755102 [2021-04-29 03:55:30,347 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 139 transitions. [2021-04-29 03:55:30,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 139 transitions. [2021-04-29 03:55:30,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:55:30,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 139 transitions. [2021-04-29 03:55:30,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:30,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 35.0) internal successors, (280), 8 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:30,349 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 35.0) internal successors, (280), 8 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:30,350 INFO L185 Difference]: Start difference. First operand has 48 places, 42 transitions, 346 flow. Second operand 7 states and 139 transitions. [2021-04-29 03:55:30,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 455 flow [2021-04-29 03:55:30,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 45 transitions, 440 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-04-29 03:55:30,354 INFO L241 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2021-04-29 03:55:30,354 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2021-04-29 03:55:30,354 INFO L343 CegarLoopForPetriNet]: 29 programPoint places, 21 predicate places. [2021-04-29 03:55:30,354 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:55:30,355 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 50 places, 0 transitions, 0 flow [2021-04-29 03:55:30,355 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 50 places, 0 transitions, 0 flow [2021-04-29 03:55:30,355 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-04-29 03:55:30,355 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-04-29 03:55:30,355 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 03:55:30,356 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-04-29 03:55:30,356 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-29 03:55:30,356 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 03:55:30,356 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:55:30,356 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-04-29 03:55:30,357 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-04-29 03:55:30,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:30,358 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-29 03:55:30,363 INFO L202 PluginConnector]: Adding new model Bakery.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 03:55:30 BasicIcfg [2021-04-29 03:55:30,363 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-29 03:55:30,364 INFO L168 Benchmark]: Toolchain (without parser) took 3089.56 ms. Allocated memory is still 302.0 MB. Free memory was 272.0 MB in the beginning and 278.6 MB in the end (delta: -6.6 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 03:55:30,365 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.39 ms. Allocated memory is still 302.0 MB. Free memory is still 273.1 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 03:55:30,365 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.58 ms. Allocated memory is still 302.0 MB. Free memory was 269.0 MB in the beginning and 267.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-29 03:55:30,366 INFO L168 Benchmark]: Boogie Preprocessor took 21.95 ms. Allocated memory is still 302.0 MB. Free memory was 267.6 MB in the beginning and 266.6 MB in the end (delta: 988.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 03:55:30,366 INFO L168 Benchmark]: RCFGBuilder took 341.04 ms. Allocated memory is still 302.0 MB. Free memory was 266.6 MB in the beginning and 280.6 MB in the end (delta: -14.0 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.0 GB. [2021-04-29 03:55:30,367 INFO L168 Benchmark]: TraceAbstraction took 2639.63 ms. Allocated memory is still 302.0 MB. Free memory was 280.3 MB in the beginning and 278.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.0 GB. [2021-04-29 03:55:30,369 INFO L339 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 0.39 ms. Allocated memory is still 302.0 MB. Free memory is still 273.1 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 36.58 ms. Allocated memory is still 302.0 MB. Free memory was 269.0 MB in the beginning and 267.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 21.95 ms. Allocated memory is still 302.0 MB. Free memory was 267.6 MB in the beginning and 266.6 MB in the end (delta: 988.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 341.04 ms. Allocated memory is still 302.0 MB. Free memory was 266.6 MB in the beginning and 280.6 MB in the end (delta: -14.0 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2639.63 ms. Allocated memory is still 302.0 MB. Free memory was 280.3 MB in the beginning and 278.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 842.8ms, 29 PlacesBefore, 29 PlacesAfterwards, 24 TransitionsBefore, 24 TransitionsAfterwards, 216 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 9 TotalNumberOfCompositions, 735 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 306, positive: 242, positive conditional: 242, positive unconditional: 0, negative: 64, negative conditional: 64, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 144, positive: 122, positive conditional: 0, positive unconditional: 122, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 144, positive: 122, positive conditional: 0, positive unconditional: 122, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 144, positive: 104, positive conditional: 0, positive unconditional: 104, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 40, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 313, positive: 120, positive conditional: 0, positive unconditional: 120, negative: 193, negative conditional: 0, negative unconditional: 193, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 306, positive: 120, positive conditional: 120, positive unconditional: 0, negative: 42, negative conditional: 42, negative unconditional: 0, unknown: 144, unknown conditional: 144, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 144, Positive cache size: 122, Positive conditional cache size: 122, Positive unconditional cache size: 0, Negative cache size: 22, Negative conditional cache size: 22, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 43.8ms, 28 PlacesBefore, 26 PlacesAfterwards, 23 TransitionsBefore, 23 TransitionsAfterwards, 160 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 99 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 45, positive: 34, positive conditional: 34, positive unconditional: 0, negative: 11, negative conditional: 11, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 16, positive: 12, positive conditional: 4, positive unconditional: 8, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 16, positive: 12, positive conditional: 4, positive unconditional: 8, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 16, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 8, positive: 4, positive conditional: 1, positive unconditional: 3, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 27, positive: 15, positive conditional: 6, positive unconditional: 9, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 45, positive: 22, positive conditional: 22, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 16, unknown conditional: 16, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 160, Positive cache size: 134, Positive conditional cache size: 134, Positive unconditional cache size: 0, Negative cache size: 26, Negative conditional cache size: 26, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 24.7ms, 30 PlacesBefore, 30 PlacesAfterwards, 29 TransitionsBefore, 29 TransitionsAfterwards, 140 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 160, Positive cache size: 134, Positive conditional cache size: 134, Positive unconditional cache size: 0, Negative cache size: 26, Negative conditional cache size: 26, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 35.6ms, 37 PlacesBefore, 37 PlacesAfterwards, 40 TransitionsBefore, 40 TransitionsAfterwards, 184 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 160, Positive cache size: 134, Positive conditional cache size: 134, Positive unconditional cache size: 0, Negative cache size: 26, Negative conditional cache size: 26, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 34.2ms, 44 PlacesBefore, 44 PlacesAfterwards, 40 TransitionsBefore, 40 TransitionsAfterwards, 196 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 160, Positive cache size: 134, Positive conditional cache size: 134, Positive unconditional cache size: 0, Negative cache size: 26, Negative conditional cache size: 26, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 26.0ms, 50 PlacesBefore, 50 PlacesAfterwards, 42 TransitionsBefore, 42 TransitionsAfterwards, 174 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 160, Positive cache size: 134, Positive conditional cache size: 134, Positive unconditional cache size: 0, Negative cache size: 26, Negative conditional cache size: 26, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 24.4ms, 49 PlacesBefore, 48 PlacesAfterwards, 42 TransitionsBefore, 42 TransitionsAfterwards, 154 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 160, Positive cache size: 134, Positive conditional cache size: 134, Positive unconditional cache size: 0, Negative cache size: 26, Negative conditional cache size: 26, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4ms, 50 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 160, Positive cache size: 134, Positive conditional cache size: 134, Positive unconditional cache size: 0, Negative cache size: 26, Negative conditional cache size: 26, Negative unconditional cache size: 0 - PositiveResult [Line: 38]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 53]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2504.4ms, OverallIterations: 7, TraceHistogramMax: 2, EmptinessCheckTime: 0.0ms, AutomataDifference: 769.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 972.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 49 SDtfs, 119 SDslu, 19 SDs, 0 SdLazy, 214 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 234.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 153.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=354occurred in iteration=5, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.6ms SsaConstructionTime, 60.1ms SatisfiabilityAnalysisTime, 293.5ms InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 62 ConstructedInterpolants, 0 QuantifiedInterpolants, 194 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 11/11 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...