/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-12 00:17:28,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-12 00:17:28,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-12 00:17:28,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-12 00:17:28,356 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-12 00:17:28,385 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-12 00:17:28,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-12 00:17:28,388 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-12 00:17:28,388 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-12 00:17:28,388 INFO L138 SettingsManager]: * Use SBE=true [2021-03-12 00:17:28,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-12 00:17:28,388 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-12 00:17:28,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-12 00:17:28,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-12 00:17:28,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-12 00:17:28,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-12 00:17:28,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-12 00:17:28,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-12 00:17:28,389 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-12 00:17:28,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-12 00:17:28,390 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-12 00:17:28,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-12 00:17:28,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-12 00:17:28,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-12 00:17:28,390 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-12 00:17:28,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-12 00:17:28,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-12 00:17:28,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-12 00:17:28,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-12 00:17:28,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-12 00:17:28,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-12 00:17:28,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-12 00:17:28,391 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-12 00:17:28,391 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-12 00:17:28,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-12 00:17:28,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-12 00:17:28,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-12 00:17:28,680 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-12 00:17:28,680 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-12 00:17:28,681 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl [2021-03-12 00:17:28,681 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl' [2021-03-12 00:17:28,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-12 00:17:28,716 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-12 00:17:28,717 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-12 00:17:28,717 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-12 00:17:28,717 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-12 00:17:28,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:17:28" (1/1) ... [2021-03-12 00:17:28,730 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:17:28" (1/1) ... [2021-03-12 00:17:28,735 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-12 00:17:28,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-12 00:17:28,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-12 00:17:28,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-12 00:17:28,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:17:28" (1/1) ... [2021-03-12 00:17:28,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:17:28" (1/1) ... [2021-03-12 00:17:28,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:17:28" (1/1) ... [2021-03-12 00:17:28,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:17:28" (1/1) ... [2021-03-12 00:17:28,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:17:28" (1/1) ... [2021-03-12 00:17:28,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:17:28" (1/1) ... [2021-03-12 00:17:28,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:17:28" (1/1) ... [2021-03-12 00:17:28,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-12 00:17:28,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-12 00:17:28,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-12 00:17:28,746 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-12 00:17:28,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:17:28" (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 [2021-03-12 00:17:28,798 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-12 00:17:28,799 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-12 00:17:28,799 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-12 00:17:28,799 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-12 00:17:28,799 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-12 00:17:28,799 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-12 00:17:28,799 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-12 00:17:28,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-12 00:17:28,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-12 00:17:28,799 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-12 00:17:28,799 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-12 00:17:28,799 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-12 00:17:28,800 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-03-12 00:17:28,800 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-03-12 00:17:28,800 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-03-12 00:17:28,800 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-03-12 00:17:28,800 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-03-12 00:17:28,800 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-03-12 00:17:28,800 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-03-12 00:17:28,800 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-03-12 00:17:28,800 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-03-12 00:17:28,801 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-12 00:17:28,973 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-12 00:17:28,973 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-12 00:17:28,974 INFO L202 PluginConnector]: Adding new model barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 12:17:28 BoogieIcfgContainer [2021-03-12 00:17:28,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-12 00:17:28,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-12 00:17:28,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-12 00:17:28,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-12 00:17:28,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:17:28" (1/2) ... [2021-03-12 00:17:28,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@585c619d and model type barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.03 12:17:28, skipping insertion in model container [2021-03-12 00:17:28,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 12:17:28" (2/2) ... [2021-03-12 00:17:28,978 INFO L111 eAbstractionObserver]: Analyzing ICFG barrier.wvr.bpl [2021-03-12 00:17:28,982 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-12 00:17:28,984 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-12 00:17:28,985 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-12 00:17:29,084 INFO L149 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2021-03-12 00:17:29,096 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-03-12 00:17:29,117 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-12 00:17:29,117 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-12 00:17:29,117 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-12 00:17:29,117 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-12 00:17:29,120 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-12 00:17:29,120 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-12 00:17:29,120 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-12 00:17:29,120 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-12 00:17:29,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 65 transitions, 202 flow [2021-03-12 00:17:29,181 INFO L129 PetriNetUnfolder]: 4/53 cut-off events. [2021-03-12 00:17:29,181 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-12 00:17:29,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 53 events. 4/53 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 109 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2021-03-12 00:17:29,185 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 65 transitions, 202 flow [2021-03-12 00:17:29,189 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 51 transitions, 150 flow [2021-03-12 00:17:29,193 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-12 00:17:29,203 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 51 transitions, 150 flow [2021-03-12 00:17:29,209 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 51 transitions, 150 flow [2021-03-12 00:17:29,209 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 51 transitions, 150 flow [2021-03-12 00:17:29,231 INFO L129 PetriNetUnfolder]: 4/51 cut-off events. [2021-03-12 00:17:29,232 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-12 00:17:29,233 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 51 events. 4/51 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 108 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2021-03-12 00:17:29,235 INFO L116 LiptonReduction]: Number of co-enabled transitions 1336 [2021-03-12 00:17:29,571 INFO L131 LiptonReduction]: Checked pairs total: 2060 [2021-03-12 00:17:29,571 INFO L133 LiptonReduction]: Total number of compositions: 13 [2021-03-12 00:17:29,572 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 382 [2021-03-12 00:17:29,593 INFO L129 PetriNetUnfolder]: 4/37 cut-off events. [2021-03-12 00:17:29,593 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-12 00:17:29,593 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:17:29,594 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:17:29,594 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:17:29,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:17:29,600 INFO L82 PathProgramCache]: Analyzing trace with hash -465075012, now seen corresponding path program 1 times [2021-03-12 00:17:29,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:17:29,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230063843] [2021-03-12 00:17:29,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:17:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:17:29,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:29,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:17:29,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:29,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-12 00:17:29,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:29,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:17:29,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:17:29,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230063843] [2021-03-12 00:17:29,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:17:29,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-12 00:17:29,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109032360] [2021-03-12 00:17:29,702 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-12 00:17:29,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:17:29,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-12 00:17:29,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-12 00:17:29,712 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 82 [2021-03-12 00:17:29,713 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 38 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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) [2021-03-12 00:17:29,714 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:17:29,714 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 82 [2021-03-12 00:17:29,714 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:17:29,729 INFO L129 PetriNetUnfolder]: 6/43 cut-off events. [2021-03-12 00:17:29,729 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-12 00:17:29,729 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 43 events. 6/43 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 1 based on Foata normal form. 1/39 useless extension candidates. Maximal degree in co-relation 64. Up to 6 conditions per place. [2021-03-12 00:17:29,730 INFO L132 encePairwiseOnDemand]: 79/82 looper letters, 2 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2021-03-12 00:17:29,730 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 38 transitions, 132 flow [2021-03-12 00:17:29,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 00:17:29,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-12 00:17:29,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2021-03-12 00:17:29,739 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9227642276422764 [2021-03-12 00:17:29,739 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2021-03-12 00:17:29,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2021-03-12 00:17:29,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:17:29,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2021-03-12 00:17:29,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2021-03-12 00:17:29,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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) [2021-03-12 00:17:29,748 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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) [2021-03-12 00:17:29,749 INFO L185 Difference]: Start difference. First operand has 53 places, 38 transitions, 124 flow. Second operand 3 states and 227 transitions. [2021-03-12 00:17:29,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 38 transitions, 132 flow [2021-03-12 00:17:29,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 97 flow, removed 0 selfloop flow, removed 13 redundant places. [2021-03-12 00:17:29,753 INFO L241 Difference]: Finished difference. Result has 43 places, 38 transitions, 97 flow [2021-03-12 00:17:29,754 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2021-03-12 00:17:29,755 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, -10 predicate places. [2021-03-12 00:17:29,755 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 97 flow [2021-03-12 00:17:29,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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) [2021-03-12 00:17:29,755 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:17:29,755 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:17:29,756 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-12 00:17:29,756 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:17:29,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:17:29,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1034430903, now seen corresponding path program 1 times [2021-03-12 00:17:29,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:17:29,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609199285] [2021-03-12 00:17:29,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:17:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:17:29,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:29,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:17:29,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:29,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-12 00:17:29,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:29,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:17:29,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:17:29,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609199285] [2021-03-12 00:17:29,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:17:29,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-12 00:17:29,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096429335] [2021-03-12 00:17:29,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-12 00:17:29,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:17:29,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-12 00:17:29,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-12 00:17:29,778 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 82 [2021-03-12 00:17:29,779 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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) [2021-03-12 00:17:29,779 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:17:29,779 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 82 [2021-03-12 00:17:29,779 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:17:29,788 INFO L129 PetriNetUnfolder]: 6/43 cut-off events. [2021-03-12 00:17:29,788 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-12 00:17:29,788 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 43 events. 6/43 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 1 based on Foata normal form. 1/39 useless extension candidates. Maximal degree in co-relation 50. Up to 6 conditions per place. [2021-03-12 00:17:29,789 INFO L132 encePairwiseOnDemand]: 79/82 looper letters, 2 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2021-03-12 00:17:29,789 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 38 transitions, 105 flow [2021-03-12 00:17:29,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 00:17:29,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-12 00:17:29,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2021-03-12 00:17:29,791 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9227642276422764 [2021-03-12 00:17:29,791 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2021-03-12 00:17:29,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2021-03-12 00:17:29,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:17:29,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2021-03-12 00:17:29,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2021-03-12 00:17:29,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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) [2021-03-12 00:17:29,793 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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) [2021-03-12 00:17:29,793 INFO L185 Difference]: Start difference. First operand has 43 places, 38 transitions, 97 flow. Second operand 3 states and 227 transitions. [2021-03-12 00:17:29,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 38 transitions, 105 flow [2021-03-12 00:17:29,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 38 transitions, 101 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-12 00:17:29,795 INFO L241 Difference]: Finished difference. Result has 44 places, 38 transitions, 101 flow [2021-03-12 00:17:29,795 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2021-03-12 00:17:29,795 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, -9 predicate places. [2021-03-12 00:17:29,795 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 101 flow [2021-03-12 00:17:29,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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) [2021-03-12 00:17:29,796 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:17:29,796 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:17:29,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-12 00:17:29,796 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:17:29,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:17:29,796 INFO L82 PathProgramCache]: Analyzing trace with hash 144740453, now seen corresponding path program 1 times [2021-03-12 00:17:29,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:17:29,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958256142] [2021-03-12 00:17:29,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:17:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:17:29,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:29,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:17:29,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:29,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:29,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:29,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:30,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:30,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:30,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:30,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:30,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:30,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:30,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:30,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:30,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:30,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:30,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:30,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:30,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:30,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:30,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:30,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:30,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:30,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:30,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:30,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:30,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:30,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:30,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:30,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:30,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:30,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:30,242 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 00:17:30,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:17:30,267 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-12 00:17:30,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:30,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:17:30,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958256142] [2021-03-12 00:17:30,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:17:30,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-12 00:17:30,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139543923] [2021-03-12 00:17:30,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-12 00:17:30,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:17:30,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-12 00:17:30,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-12 00:17:30,276 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-12 00:17:30,277 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 101 flow. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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) [2021-03-12 00:17:30,277 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:17:30,277 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-12 00:17:30,277 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:17:32,012 INFO L129 PetriNetUnfolder]: 1326/2128 cut-off events. [2021-03-12 00:17:32,013 INFO L130 PetriNetUnfolder]: For 329/329 co-relation queries the response was YES. [2021-03-12 00:17:32,018 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4422 conditions, 2128 events. 1326/2128 cut-off events. For 329/329 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10419 event pairs, 586 based on Foata normal form. 1/1993 useless extension candidates. Maximal degree in co-relation 4391. Up to 1515 conditions per place. [2021-03-12 00:17:32,027 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 77 selfloop transitions, 127 changer transitions 0/222 dead transitions. [2021-03-12 00:17:32,027 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 222 transitions, 1018 flow [2021-03-12 00:17:32,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-12 00:17:32,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-03-12 00:17:32,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2077 transitions. [2021-03-12 00:17:32,032 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6494684177611006 [2021-03-12 00:17:32,032 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2077 transitions. [2021-03-12 00:17:32,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2077 transitions. [2021-03-12 00:17:32,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:17:32,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2077 transitions. [2021-03-12 00:17:32,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 53.256410256410255) internal successors, (2077), 39 states have internal predecessors, (2077), 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) [2021-03-12 00:17:32,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 82.0) internal successors, (3280), 40 states have internal predecessors, (3280), 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) [2021-03-12 00:17:32,042 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 82.0) internal successors, (3280), 40 states have internal predecessors, (3280), 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) [2021-03-12 00:17:32,042 INFO L185 Difference]: Start difference. First operand has 44 places, 38 transitions, 101 flow. Second operand 39 states and 2077 transitions. [2021-03-12 00:17:32,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 222 transitions, 1018 flow [2021-03-12 00:17:32,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 222 transitions, 942 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-12 00:17:32,047 INFO L241 Difference]: Finished difference. Result has 100 places, 166 transitions, 826 flow [2021-03-12 00:17:32,047 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=826, PETRI_PLACES=100, PETRI_TRANSITIONS=166} [2021-03-12 00:17:32,047 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 47 predicate places. [2021-03-12 00:17:32,047 INFO L480 AbstractCegarLoop]: Abstraction has has 100 places, 166 transitions, 826 flow [2021-03-12 00:17:32,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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) [2021-03-12 00:17:32,048 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:17:32,048 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:17:32,048 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-12 00:17:32,048 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:17:32,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:17:32,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1950799875, now seen corresponding path program 2 times [2021-03-12 00:17:32,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:17:32,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874101251] [2021-03-12 00:17:32,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:17:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:17:32,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:32,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:17:32,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:32,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-12 00:17:32,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:32,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:17:32,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:17:32,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874101251] [2021-03-12 00:17:32,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:17:32,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-12 00:17:32,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843651808] [2021-03-12 00:17:32,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-12 00:17:32,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:17:32,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-12 00:17:32,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-12 00:17:32,064 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 82 [2021-03-12 00:17:32,065 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 166 transitions, 826 flow. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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) [2021-03-12 00:17:32,065 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:17:32,065 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 82 [2021-03-12 00:17:32,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:17:32,143 INFO L129 PetriNetUnfolder]: 480/986 cut-off events. [2021-03-12 00:17:32,143 INFO L130 PetriNetUnfolder]: For 911/916 co-relation queries the response was YES. [2021-03-12 00:17:32,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2440 conditions, 986 events. 480/986 cut-off events. For 911/916 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5439 event pairs, 198 based on Foata normal form. 27/857 useless extension candidates. Maximal degree in co-relation 2404. Up to 557 conditions per place. [2021-03-12 00:17:32,152 INFO L132 encePairwiseOnDemand]: 79/82 looper letters, 7 selfloop transitions, 29 changer transitions 0/145 dead transitions. [2021-03-12 00:17:32,152 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 145 transitions, 805 flow [2021-03-12 00:17:32,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 00:17:32,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-12 00:17:32,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2021-03-12 00:17:32,153 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9227642276422764 [2021-03-12 00:17:32,153 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2021-03-12 00:17:32,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2021-03-12 00:17:32,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:17:32,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2021-03-12 00:17:32,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2021-03-12 00:17:32,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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) [2021-03-12 00:17:32,154 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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) [2021-03-12 00:17:32,155 INFO L185 Difference]: Start difference. First operand has 100 places, 166 transitions, 826 flow. Second operand 3 states and 227 transitions. [2021-03-12 00:17:32,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 145 transitions, 805 flow [2021-03-12 00:17:32,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 145 transitions, 790 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-12 00:17:32,168 INFO L241 Difference]: Finished difference. Result has 98 places, 145 transitions, 809 flow [2021-03-12 00:17:32,168 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=809, PETRI_PLACES=98, PETRI_TRANSITIONS=145} [2021-03-12 00:17:32,168 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 45 predicate places. [2021-03-12 00:17:32,169 INFO L480 AbstractCegarLoop]: Abstraction has has 98 places, 145 transitions, 809 flow [2021-03-12 00:17:32,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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) [2021-03-12 00:17:32,169 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:17:32,169 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:17:32,169 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-12 00:17:32,169 INFO L428 AbstractCegarLoop]: === Iteration 5 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:17:32,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:17:32,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1409916691, now seen corresponding path program 3 times [2021-03-12 00:17:32,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:17:32,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872987354] [2021-03-12 00:17:32,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:17:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:17:32,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:32,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:17:32,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:32,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-12 00:17:32,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:32,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:17:32,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:17:32,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872987354] [2021-03-12 00:17:32,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:17:32,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-12 00:17:32,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938942854] [2021-03-12 00:17:32,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-12 00:17:32,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:17:32,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-12 00:17:32,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-12 00:17:32,199 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 82 [2021-03-12 00:17:32,199 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 145 transitions, 809 flow. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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) [2021-03-12 00:17:32,199 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:17:32,199 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 82 [2021-03-12 00:17:32,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:17:32,250 INFO L129 PetriNetUnfolder]: 419/859 cut-off events. [2021-03-12 00:17:32,251 INFO L130 PetriNetUnfolder]: For 1014/1028 co-relation queries the response was YES. [2021-03-12 00:17:32,255 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2166 conditions, 859 events. 419/859 cut-off events. For 1014/1028 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4536 event pairs, 160 based on Foata normal form. 11/724 useless extension candidates. Maximal degree in co-relation 2129. Up to 452 conditions per place. [2021-03-12 00:17:32,258 INFO L132 encePairwiseOnDemand]: 79/82 looper letters, 12 selfloop transitions, 4 changer transitions 0/145 dead transitions. [2021-03-12 00:17:32,258 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 145 transitions, 841 flow [2021-03-12 00:17:32,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 00:17:32,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-12 00:17:32,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2021-03-12 00:17:32,259 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9227642276422764 [2021-03-12 00:17:32,259 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2021-03-12 00:17:32,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2021-03-12 00:17:32,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:17:32,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2021-03-12 00:17:32,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2021-03-12 00:17:32,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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) [2021-03-12 00:17:32,261 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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) [2021-03-12 00:17:32,261 INFO L185 Difference]: Start difference. First operand has 98 places, 145 transitions, 809 flow. Second operand 3 states and 227 transitions. [2021-03-12 00:17:32,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 145 transitions, 841 flow [2021-03-12 00:17:32,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 145 transitions, 783 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-12 00:17:32,268 INFO L241 Difference]: Finished difference. Result has 99 places, 145 transitions, 765 flow [2021-03-12 00:17:32,268 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=765, PETRI_PLACES=99, PETRI_TRANSITIONS=145} [2021-03-12 00:17:32,268 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 46 predicate places. [2021-03-12 00:17:32,268 INFO L480 AbstractCegarLoop]: Abstraction has has 99 places, 145 transitions, 765 flow [2021-03-12 00:17:32,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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) [2021-03-12 00:17:32,269 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:17:32,269 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:17:32,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-12 00:17:32,269 INFO L428 AbstractCegarLoop]: === Iteration 6 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:17:32,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:17:32,269 INFO L82 PathProgramCache]: Analyzing trace with hash 811614025, now seen corresponding path program 4 times [2021-03-12 00:17:32,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:17:32,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515252909] [2021-03-12 00:17:32,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:17:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:17:32,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:32,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:17:32,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:32,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:32,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:32,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:32,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:32,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:32,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:32,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:32,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:32,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:32,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:32,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:32,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:32,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:32,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:32,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:32,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:32,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:17:32,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:32,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:17:32,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:32,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:17:32,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:32,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:32,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:32,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:32,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:32,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:32,475 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-12 00:17:32,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 00:17:32,495 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-12 00:17:32,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:17:32,529 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 00:17:32,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:32,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:17:32,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515252909] [2021-03-12 00:17:32,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:17:32,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-12 00:17:32,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506663467] [2021-03-12 00:17:32,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-12 00:17:32,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:17:32,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-12 00:17:32,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-12 00:17:32,544 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-12 00:17:32,545 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 145 transitions, 765 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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) [2021-03-12 00:17:32,545 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:17:32,545 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-12 00:17:32,545 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:17:34,495 INFO L129 PetriNetUnfolder]: 1292/2118 cut-off events. [2021-03-12 00:17:34,496 INFO L130 PetriNetUnfolder]: For 6373/6375 co-relation queries the response was YES. [2021-03-12 00:17:34,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8184 conditions, 2118 events. 1292/2118 cut-off events. For 6373/6375 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 10340 event pairs, 248 based on Foata normal form. 3/1981 useless extension candidates. Maximal degree in co-relation 8137. Up to 1248 conditions per place. [2021-03-12 00:17:34,512 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 182 selfloop transitions, 212 changer transitions 1/413 dead transitions. [2021-03-12 00:17:34,512 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 413 transitions, 3245 flow [2021-03-12 00:17:34,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-12 00:17:34,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-03-12 00:17:34,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 2791 transitions. [2021-03-12 00:17:34,518 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6545497185741088 [2021-03-12 00:17:34,518 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 2791 transitions. [2021-03-12 00:17:34,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 2791 transitions. [2021-03-12 00:17:34,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:17:34,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 2791 transitions. [2021-03-12 00:17:34,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 53.67307692307692) internal successors, (2791), 52 states have internal predecessors, (2791), 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) [2021-03-12 00:17:34,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 82.0) internal successors, (4346), 53 states have internal predecessors, (4346), 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) [2021-03-12 00:17:34,529 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 82.0) internal successors, (4346), 53 states have internal predecessors, (4346), 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) [2021-03-12 00:17:34,529 INFO L185 Difference]: Start difference. First operand has 99 places, 145 transitions, 765 flow. Second operand 52 states and 2791 transitions. [2021-03-12 00:17:34,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 413 transitions, 3245 flow [2021-03-12 00:17:34,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 413 transitions, 3187 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-12 00:17:34,543 INFO L241 Difference]: Finished difference. Result has 177 places, 329 transitions, 2519 flow [2021-03-12 00:17:34,543 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=2519, PETRI_PLACES=177, PETRI_TRANSITIONS=329} [2021-03-12 00:17:34,544 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 124 predicate places. [2021-03-12 00:17:34,544 INFO L480 AbstractCegarLoop]: Abstraction has has 177 places, 329 transitions, 2519 flow [2021-03-12 00:17:34,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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) [2021-03-12 00:17:34,544 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:17:34,544 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:17:34,544 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-12 00:17:34,544 INFO L428 AbstractCegarLoop]: === Iteration 7 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:17:34,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:17:34,545 INFO L82 PathProgramCache]: Analyzing trace with hash 469092783, now seen corresponding path program 5 times [2021-03-12 00:17:34,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:17:34,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370680278] [2021-03-12 00:17:34,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:17:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:17:34,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:34,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:17:34,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:34,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:34,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:34,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:34,582 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 00:17:34,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:34,587 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-12 00:17:34,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:34,593 INFO L142 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size [2021-03-12 00:17:34,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:34,602 INFO L142 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-03-12 00:17:34,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:34,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:34,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:34,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:34,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:34,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:34,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:34,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:34,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:34,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:34,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:34,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:34,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:34,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:34,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:34,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:34,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:34,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:34,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:34,777 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 00:17:34,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:17:34,805 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-12 00:17:34,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:34,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:17:34,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370680278] [2021-03-12 00:17:34,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:17:34,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-12 00:17:34,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862398620] [2021-03-12 00:17:34,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-12 00:17:34,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:17:34,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-12 00:17:34,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-12 00:17:34,813 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-12 00:17:34,813 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 329 transitions, 2519 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 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) [2021-03-12 00:17:34,814 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:17:34,814 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-12 00:17:34,814 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:17:38,407 INFO L129 PetriNetUnfolder]: 1834/3052 cut-off events. [2021-03-12 00:17:38,407 INFO L130 PetriNetUnfolder]: For 27960/27962 co-relation queries the response was YES. [2021-03-12 00:17:38,424 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17252 conditions, 3052 events. 1834/3052 cut-off events. For 27960/27962 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 16209 event pairs, 353 based on Foata normal form. 5/2845 useless extension candidates. Maximal degree in co-relation 17168. Up to 1911 conditions per place. [2021-03-12 00:17:38,443 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 378 selfloop transitions, 382 changer transitions 0/778 dead transitions. [2021-03-12 00:17:38,443 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 778 transitions, 9035 flow [2021-03-12 00:17:38,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-03-12 00:17:38,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-03-12 00:17:38,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 4577 transitions. [2021-03-12 00:17:38,449 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6415755536865714 [2021-03-12 00:17:38,449 INFO L72 ComplementDD]: Start complementDD. Operand 87 states and 4577 transitions. [2021-03-12 00:17:38,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 4577 transitions. [2021-03-12 00:17:38,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:17:38,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 87 states and 4577 transitions. [2021-03-12 00:17:38,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 88 states, 87 states have (on average 52.60919540229885) internal successors, (4577), 87 states have internal predecessors, (4577), 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) [2021-03-12 00:17:38,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 88 states, 88 states have (on average 82.0) internal successors, (7216), 88 states have internal predecessors, (7216), 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) [2021-03-12 00:17:38,464 INFO L81 ComplementDD]: Finished complementDD. Result has 88 states, 88 states have (on average 82.0) internal successors, (7216), 88 states have internal predecessors, (7216), 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) [2021-03-12 00:17:38,464 INFO L185 Difference]: Start difference. First operand has 177 places, 329 transitions, 2519 flow. Second operand 87 states and 4577 transitions. [2021-03-12 00:17:38,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 778 transitions, 9035 flow [2021-03-12 00:17:38,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 778 transitions, 7978 flow, removed 463 selfloop flow, removed 4 redundant places. [2021-03-12 00:17:38,576 INFO L241 Difference]: Finished difference. Result has 282 places, 732 transitions, 7220 flow [2021-03-12 00:17:38,577 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=2128, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=87, PETRI_FLOW=7220, PETRI_PLACES=282, PETRI_TRANSITIONS=732} [2021-03-12 00:17:38,577 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 229 predicate places. [2021-03-12 00:17:38,577 INFO L480 AbstractCegarLoop]: Abstraction has has 282 places, 732 transitions, 7220 flow [2021-03-12 00:17:38,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 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) [2021-03-12 00:17:38,578 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:17:38,578 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:17:38,578 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-12 00:17:38,578 INFO L428 AbstractCegarLoop]: === Iteration 8 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:17:38,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:17:38,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1361752535, now seen corresponding path program 6 times [2021-03-12 00:17:38,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:17:38,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867065334] [2021-03-12 00:17:38,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:17:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:17:38,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:38,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:17:38,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:38,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:38,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:38,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:38,615 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 00:17:38,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:38,621 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-12 00:17:38,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:38,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:38,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:38,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:38,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:38,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:38,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:38,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:38,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:38,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:38,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:38,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:38,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:38,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:38,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:38,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:38,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:38,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:38,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:38,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:38,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:38,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:38,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:38,791 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 00:17:38,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:17:38,812 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 00:17:38,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:38,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:17:38,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867065334] [2021-03-12 00:17:38,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:17:38,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-12 00:17:38,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451798734] [2021-03-12 00:17:38,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-12 00:17:38,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:17:38,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-12 00:17:38,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-12 00:17:38,817 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-12 00:17:38,818 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 732 transitions, 7220 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 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) [2021-03-12 00:17:38,818 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:17:38,818 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-12 00:17:38,818 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:17:43,169 INFO L129 PetriNetUnfolder]: 2593/4333 cut-off events. [2021-03-12 00:17:43,169 INFO L130 PetriNetUnfolder]: For 65818/65871 co-relation queries the response was YES. [2021-03-12 00:17:43,198 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27593 conditions, 4333 events. 2593/4333 cut-off events. For 65818/65871 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 24469 event pairs, 323 based on Foata normal form. 26/4032 useless extension candidates. Maximal degree in co-relation 27434. Up to 2768 conditions per place. [2021-03-12 00:17:43,222 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 732 selfloop transitions, 542 changer transitions 5/1297 dead transitions. [2021-03-12 00:17:43,222 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 1297 transitions, 17100 flow [2021-03-12 00:17:43,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-03-12 00:17:43,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2021-03-12 00:17:43,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 5269 transitions. [2021-03-12 00:17:43,228 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6490514905149052 [2021-03-12 00:17:43,228 INFO L72 ComplementDD]: Start complementDD. Operand 99 states and 5269 transitions. [2021-03-12 00:17:43,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 5269 transitions. [2021-03-12 00:17:43,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:17:43,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 99 states and 5269 transitions. [2021-03-12 00:17:43,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 100 states, 99 states have (on average 53.22222222222222) internal successors, (5269), 99 states have internal predecessors, (5269), 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) [2021-03-12 00:17:43,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 100 states, 100 states have (on average 82.0) internal successors, (8200), 100 states have internal predecessors, (8200), 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) [2021-03-12 00:17:43,245 INFO L81 ComplementDD]: Finished complementDD. Result has 100 states, 100 states have (on average 82.0) internal successors, (8200), 100 states have internal predecessors, (8200), 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) [2021-03-12 00:17:43,245 INFO L185 Difference]: Start difference. First operand has 282 places, 732 transitions, 7220 flow. Second operand 99 states and 5269 transitions. [2021-03-12 00:17:43,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 1297 transitions, 17100 flow [2021-03-12 00:17:43,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 1297 transitions, 14857 flow, removed 1120 selfloop flow, removed 1 redundant places. [2021-03-12 00:17:43,524 INFO L241 Difference]: Finished difference. Result has 397 places, 1256 transitions, 13495 flow [2021-03-12 00:17:43,524 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=5015, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=13495, PETRI_PLACES=397, PETRI_TRANSITIONS=1256} [2021-03-12 00:17:43,525 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 344 predicate places. [2021-03-12 00:17:43,525 INFO L480 AbstractCegarLoop]: Abstraction has has 397 places, 1256 transitions, 13495 flow [2021-03-12 00:17:43,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 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) [2021-03-12 00:17:43,525 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:17:43,525 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:17:43,525 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-12 00:17:43,525 INFO L428 AbstractCegarLoop]: === Iteration 9 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:17:43,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:17:43,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1573113463, now seen corresponding path program 7 times [2021-03-12 00:17:43,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:17:43,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425708058] [2021-03-12 00:17:43,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:17:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:17:43,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:43,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:17:43,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:43,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:43,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:43,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:43,559 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 00:17:43,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:43,565 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-12 00:17:43,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:43,571 INFO L142 QuantifierPusher]: treesize reduction 12, result has 45.5 percent of original size [2021-03-12 00:17:43,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:43,578 INFO L142 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-03-12 00:17:43,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:43,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:43,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:43,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:43,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:43,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:43,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:43,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:43,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:43,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:43,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:43,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:43,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:43,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:43,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:43,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:43,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:43,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:43,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:43,724 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 00:17:43,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:17:43,747 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 00:17:43,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:43,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:17:43,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425708058] [2021-03-12 00:17:43,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:17:43,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-12 00:17:43,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289556863] [2021-03-12 00:17:43,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-12 00:17:43,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:17:43,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-12 00:17:43,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-12 00:17:43,760 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-12 00:17:43,761 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 1256 transitions, 13495 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 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) [2021-03-12 00:17:43,761 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:17:43,761 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-12 00:17:43,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:17:47,901 INFO L129 PetriNetUnfolder]: 3106/5242 cut-off events. [2021-03-12 00:17:47,901 INFO L130 PetriNetUnfolder]: For 85644/85679 co-relation queries the response was YES. [2021-03-12 00:17:47,943 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34628 conditions, 5242 events. 3106/5242 cut-off events. For 85644/85679 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 31121 event pairs, 288 based on Foata normal form. 16/4830 useless extension candidates. Maximal degree in co-relation 34387. Up to 3532 conditions per place. [2021-03-12 00:17:47,971 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 1172 selfloop transitions, 537 changer transitions 0/1727 dead transitions. [2021-03-12 00:17:47,971 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 1727 transitions, 23785 flow [2021-03-12 00:17:47,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-03-12 00:17:47,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-03-12 00:17:47,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 4450 transitions. [2021-03-12 00:17:47,976 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6460511033681765 [2021-03-12 00:17:47,976 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 4450 transitions. [2021-03-12 00:17:47,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 4450 transitions. [2021-03-12 00:17:47,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:17:47,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 4450 transitions. [2021-03-12 00:17:47,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 52.976190476190474) internal successors, (4450), 84 states have internal predecessors, (4450), 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) [2021-03-12 00:17:47,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 82.0) internal successors, (6970), 85 states have internal predecessors, (6970), 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) [2021-03-12 00:17:47,989 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 82.0) internal successors, (6970), 85 states have internal predecessors, (6970), 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) [2021-03-12 00:17:47,989 INFO L185 Difference]: Start difference. First operand has 397 places, 1256 transitions, 13495 flow. Second operand 84 states and 4450 transitions. [2021-03-12 00:17:47,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 1727 transitions, 23785 flow [2021-03-12 00:17:48,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 1727 transitions, 19081 flow, removed 2349 selfloop flow, removed 1 redundant places. [2021-03-12 00:17:48,594 INFO L241 Difference]: Finished difference. Result has 493 places, 1699 transitions, 17040 flow [2021-03-12 00:17:48,595 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=8839, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1066, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=17040, PETRI_PLACES=493, PETRI_TRANSITIONS=1699} [2021-03-12 00:17:48,595 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 440 predicate places. [2021-03-12 00:17:48,596 INFO L480 AbstractCegarLoop]: Abstraction has has 493 places, 1699 transitions, 17040 flow [2021-03-12 00:17:48,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 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) [2021-03-12 00:17:48,596 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:17:48,596 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:17:48,597 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-12 00:17:48,597 INFO L428 AbstractCegarLoop]: === Iteration 10 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:17:48,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:17:48,597 INFO L82 PathProgramCache]: Analyzing trace with hash 308069923, now seen corresponding path program 8 times [2021-03-12 00:17:48,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:17:48,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092064023] [2021-03-12 00:17:48,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:17:48,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:17:48,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:48,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:17:48,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:48,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:48,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:48,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:48,630 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 00:17:48,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:48,636 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-12 00:17:48,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:48,643 INFO L142 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-03-12 00:17:48,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-12 00:17:48,653 INFO L142 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-03-12 00:17:48,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-12 00:17:48,665 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-12 00:17:48,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-12 00:17:48,679 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-12 00:17:48,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-12 00:17:48,692 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-12 00:17:48,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-12 00:17:48,707 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-12 00:17:48,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-12 00:17:48,722 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-12 00:17:48,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-12 00:17:48,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:48,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:48,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:48,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:48,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:48,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:48,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:48,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:48,813 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 00:17:48,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:17:48,832 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-12 00:17:48,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:48,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:17:48,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092064023] [2021-03-12 00:17:48,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:17:48,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-12 00:17:48,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824646158] [2021-03-12 00:17:48,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-12 00:17:48,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:17:48,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-12 00:17:48,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2021-03-12 00:17:48,839 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-12 00:17:48,840 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 1699 transitions, 17040 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 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) [2021-03-12 00:17:48,840 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:17:48,840 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-12 00:17:48,840 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:17:51,663 INFO L129 PetriNetUnfolder]: 3480/5840 cut-off events. [2021-03-12 00:17:51,663 INFO L130 PetriNetUnfolder]: For 89700/89738 co-relation queries the response was YES. [2021-03-12 00:17:51,720 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38219 conditions, 5840 events. 3480/5840 cut-off events. For 89700/89738 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 35134 event pairs, 377 based on Foata normal form. 18/5405 useless extension candidates. Maximal degree in co-relation 37929. Up to 4181 conditions per place. [2021-03-12 00:17:51,760 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 1588 selfloop transitions, 437 changer transitions 0/2043 dead transitions. [2021-03-12 00:17:51,761 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 2043 transitions, 26907 flow [2021-03-12 00:17:51,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-12 00:17:51,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-03-12 00:17:51,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2208 transitions. [2021-03-12 00:17:51,764 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6567519333729923 [2021-03-12 00:17:51,764 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2208 transitions. [2021-03-12 00:17:51,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2208 transitions. [2021-03-12 00:17:51,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:17:51,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2208 transitions. [2021-03-12 00:17:51,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 53.853658536585364) internal successors, (2208), 41 states have internal predecessors, (2208), 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) [2021-03-12 00:17:51,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 82.0) internal successors, (3444), 42 states have internal predecessors, (3444), 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) [2021-03-12 00:17:51,769 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 82.0) internal successors, (3444), 42 states have internal predecessors, (3444), 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) [2021-03-12 00:17:51,770 INFO L185 Difference]: Start difference. First operand has 493 places, 1699 transitions, 17040 flow. Second operand 41 states and 2208 transitions. [2021-03-12 00:17:51,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 2043 transitions, 26907 flow [2021-03-12 00:17:52,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 2043 transitions, 22018 flow, removed 2443 selfloop flow, removed 1 redundant places. [2021-03-12 00:17:52,541 INFO L241 Difference]: Finished difference. Result has 550 places, 1958 transitions, 18373 flow [2021-03-12 00:17:52,543 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=12679, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=18373, PETRI_PLACES=550, PETRI_TRANSITIONS=1958} [2021-03-12 00:17:52,543 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 497 predicate places. [2021-03-12 00:17:52,543 INFO L480 AbstractCegarLoop]: Abstraction has has 550 places, 1958 transitions, 18373 flow [2021-03-12 00:17:52,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 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) [2021-03-12 00:17:52,544 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:17:52,544 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:17:52,544 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-12 00:17:52,544 INFO L428 AbstractCegarLoop]: === Iteration 11 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:17:52,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:17:52,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1949487073, now seen corresponding path program 9 times [2021-03-12 00:17:52,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:17:52,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754553977] [2021-03-12 00:17:52,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:17:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:17:52,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:52,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:17:52,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:52,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:52,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:52,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:52,578 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 00:17:52,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:52,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:52,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:52,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:52,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:52,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:52,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:52,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:52,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:52,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:52,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:52,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:52,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:52,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:52,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:52,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:52,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:52,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:52,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:52,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:52,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:52,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:52,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:52,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:52,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:52,741 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 00:17:52,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:17:52,761 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 00:17:52,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:52,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:17:52,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754553977] [2021-03-12 00:17:52,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:17:52,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-12 00:17:52,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891632698] [2021-03-12 00:17:52,764 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-12 00:17:52,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:17:52,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-12 00:17:52,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-12 00:17:52,765 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-12 00:17:52,766 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 1958 transitions, 18373 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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) [2021-03-12 00:17:52,766 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:17:52,766 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-12 00:17:52,766 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:17:56,178 INFO L129 PetriNetUnfolder]: 3807/6389 cut-off events. [2021-03-12 00:17:56,178 INFO L130 PetriNetUnfolder]: For 108700/108739 co-relation queries the response was YES. [2021-03-12 00:17:56,305 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42832 conditions, 6389 events. 3807/6389 cut-off events. For 108700/108739 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 39375 event pairs, 259 based on Foata normal form. 24/5939 useless extension candidates. Maximal degree in co-relation 42484. Up to 4607 conditions per place. [2021-03-12 00:17:56,345 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 1756 selfloop transitions, 493 changer transitions 0/2267 dead transitions. [2021-03-12 00:17:56,346 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 610 places, 2267 transitions, 28200 flow [2021-03-12 00:17:56,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-03-12 00:17:56,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-03-12 00:17:56,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 3206 transitions. [2021-03-12 00:17:56,349 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6409436225509796 [2021-03-12 00:17:56,349 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 3206 transitions. [2021-03-12 00:17:56,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 3206 transitions. [2021-03-12 00:17:56,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:17:56,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 3206 transitions. [2021-03-12 00:17:56,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 52.557377049180324) internal successors, (3206), 61 states have internal predecessors, (3206), 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) [2021-03-12 00:17:56,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 82.0) internal successors, (5084), 62 states have internal predecessors, (5084), 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) [2021-03-12 00:17:56,357 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 82.0) internal successors, (5084), 62 states have internal predecessors, (5084), 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) [2021-03-12 00:17:56,357 INFO L185 Difference]: Start difference. First operand has 550 places, 1958 transitions, 18373 flow. Second operand 61 states and 3206 transitions. [2021-03-12 00:17:56,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 610 places, 2267 transitions, 28200 flow [2021-03-12 00:17:57,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 609 places, 2267 transitions, 26351 flow, removed 923 selfloop flow, removed 1 redundant places. [2021-03-12 00:17:57,368 INFO L241 Difference]: Finished difference. Result has 626 places, 2215 transitions, 22578 flow [2021-03-12 00:17:57,370 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=16556, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1958, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=270, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1645, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=22578, PETRI_PLACES=626, PETRI_TRANSITIONS=2215} [2021-03-12 00:17:57,371 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 573 predicate places. [2021-03-12 00:17:57,371 INFO L480 AbstractCegarLoop]: Abstraction has has 626 places, 2215 transitions, 22578 flow [2021-03-12 00:17:57,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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) [2021-03-12 00:17:57,371 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:17:57,371 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:17:57,371 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-12 00:17:57,371 INFO L428 AbstractCegarLoop]: === Iteration 12 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:17:57,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:17:57,372 INFO L82 PathProgramCache]: Analyzing trace with hash 500987601, now seen corresponding path program 10 times [2021-03-12 00:17:57,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:17:57,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826583618] [2021-03-12 00:17:57,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:17:57,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:17:57,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:57,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:17:57,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:57,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:57,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:57,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:57,468 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 00:17:57,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:57,474 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-12 00:17:57,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:57,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:57,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:57,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:57,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:57,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:57,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:57,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:57,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:57,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:57,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:57,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:57,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:57,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:57,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:57,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:57,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:57,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:57,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:57,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:57,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:57,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:57,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:57,637 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 00:17:57,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:17:57,657 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-12 00:17:57,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:57,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:17:57,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826583618] [2021-03-12 00:17:57,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:17:57,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-12 00:17:57,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131865286] [2021-03-12 00:17:57,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-12 00:17:57,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:17:57,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-12 00:17:57,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-12 00:17:57,664 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-12 00:17:57,665 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 2215 transitions, 22578 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 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) [2021-03-12 00:17:57,665 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:17:57,665 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-12 00:17:57,665 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:18:01,766 INFO L129 PetriNetUnfolder]: 4264/7113 cut-off events. [2021-03-12 00:18:01,767 INFO L130 PetriNetUnfolder]: For 133600/133641 co-relation queries the response was YES. [2021-03-12 00:18:01,853 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51820 conditions, 7113 events. 4264/7113 cut-off events. For 133600/133641 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 44361 event pairs, 252 based on Foata normal form. 26/6632 useless extension candidates. Maximal degree in co-relation 51422. Up to 5229 conditions per place. [2021-03-12 00:18:01,896 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 2036 selfloop transitions, 590 changer transitions 0/2644 dead transitions. [2021-03-12 00:18:01,896 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 682 places, 2644 transitions, 36720 flow [2021-03-12 00:18:01,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-03-12 00:18:01,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-03-12 00:18:01,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 3037 transitions. [2021-03-12 00:18:01,899 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6497646555412923 [2021-03-12 00:18:01,899 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 3037 transitions. [2021-03-12 00:18:01,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 3037 transitions. [2021-03-12 00:18:01,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:18:01,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 3037 transitions. [2021-03-12 00:18:01,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 53.280701754385966) internal successors, (3037), 57 states have internal predecessors, (3037), 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) [2021-03-12 00:18:01,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 82.0) internal successors, (4756), 58 states have internal predecessors, (4756), 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) [2021-03-12 00:18:01,907 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 82.0) internal successors, (4756), 58 states have internal predecessors, (4756), 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) [2021-03-12 00:18:01,907 INFO L185 Difference]: Start difference. First operand has 626 places, 2215 transitions, 22578 flow. Second operand 57 states and 3037 transitions. [2021-03-12 00:18:01,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 682 places, 2644 transitions, 36720 flow [2021-03-12 00:18:03,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 680 places, 2644 transitions, 33125 flow, removed 1777 selfloop flow, removed 2 redundant places. [2021-03-12 00:18:03,195 INFO L241 Difference]: Finished difference. Result has 707 places, 2570 transitions, 28508 flow [2021-03-12 00:18:03,197 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=19193, PETRI_DIFFERENCE_MINUEND_PLACES=624, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1882, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=28508, PETRI_PLACES=707, PETRI_TRANSITIONS=2570} [2021-03-12 00:18:03,197 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 654 predicate places. [2021-03-12 00:18:03,197 INFO L480 AbstractCegarLoop]: Abstraction has has 707 places, 2570 transitions, 28508 flow [2021-03-12 00:18:03,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 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) [2021-03-12 00:18:03,198 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:18:03,198 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:18:03,198 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-12 00:18:03,198 INFO L428 AbstractCegarLoop]: === Iteration 13 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:18:03,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:18:03,198 INFO L82 PathProgramCache]: Analyzing trace with hash 378004431, now seen corresponding path program 11 times [2021-03-12 00:18:03,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:18:03,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508765304] [2021-03-12 00:18:03,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:18:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:18:03,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:03,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:18:03,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:03,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:18:03,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:03,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:18:03,233 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 00:18:03,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:18:03,240 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-12 00:18:03,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:18:03,247 INFO L142 QuantifierPusher]: treesize reduction 12, result has 45.5 percent of original size [2021-03-12 00:18:03,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:18:03,255 INFO L142 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-03-12 00:18:03,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:18:03,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:03,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:03,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:03,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:03,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:03,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:03,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:03,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:03,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:03,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:03,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:03,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:03,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:03,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:03,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:03,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:03,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:03,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:03,486 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 00:18:03,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:18:03,507 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-12 00:18:03,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:18:03,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:18:03,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508765304] [2021-03-12 00:18:03,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:18:03,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-12 00:18:03,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086754149] [2021-03-12 00:18:03,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-12 00:18:03,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:18:03,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-12 00:18:03,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-12 00:18:03,511 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-12 00:18:03,512 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 707 places, 2570 transitions, 28508 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 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) [2021-03-12 00:18:03,512 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:18:03,512 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-12 00:18:03,512 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:18:09,685 INFO L129 PetriNetUnfolder]: 4890/8174 cut-off events. [2021-03-12 00:18:09,685 INFO L130 PetriNetUnfolder]: For 190872/190913 co-relation queries the response was YES. [2021-03-12 00:18:09,802 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64307 conditions, 8174 events. 4890/8174 cut-off events. For 190872/190913 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 52239 event pairs, 298 based on Foata normal form. 27/7618 useless extension candidates. Maximal degree in co-relation 63799. Up to 5804 conditions per place. [2021-03-12 00:18:09,851 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 2225 selfloop transitions, 865 changer transitions 0/3108 dead transitions. [2021-03-12 00:18:09,851 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 794 places, 3108 transitions, 47822 flow [2021-03-12 00:18:09,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-03-12 00:18:09,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-03-12 00:18:09,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 4731 transitions. [2021-03-12 00:18:09,856 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6556263858093127 [2021-03-12 00:18:09,856 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 4731 transitions. [2021-03-12 00:18:09,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 4731 transitions. [2021-03-12 00:18:09,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:18:09,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 4731 transitions. [2021-03-12 00:18:09,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 53.76136363636363) internal successors, (4731), 88 states have internal predecessors, (4731), 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) [2021-03-12 00:18:09,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 82.0) internal successors, (7298), 89 states have internal predecessors, (7298), 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) [2021-03-12 00:18:09,870 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 82.0) internal successors, (7298), 89 states have internal predecessors, (7298), 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) [2021-03-12 00:18:09,870 INFO L185 Difference]: Start difference. First operand has 707 places, 2570 transitions, 28508 flow. Second operand 88 states and 4731 transitions. [2021-03-12 00:18:09,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 794 places, 3108 transitions, 47822 flow [2021-03-12 00:18:12,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 792 places, 3108 transitions, 44385 flow, removed 1698 selfloop flow, removed 2 redundant places. [2021-03-12 00:18:12,089 INFO L241 Difference]: Finished difference. Result has 815 places, 3066 transitions, 40206 flow [2021-03-12 00:18:12,092 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=25287, PETRI_DIFFERENCE_MINUEND_PLACES=705, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=444, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2078, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=40206, PETRI_PLACES=815, PETRI_TRANSITIONS=3066} [2021-03-12 00:18:12,092 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 762 predicate places. [2021-03-12 00:18:12,093 INFO L480 AbstractCegarLoop]: Abstraction has has 815 places, 3066 transitions, 40206 flow [2021-03-12 00:18:12,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 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) [2021-03-12 00:18:12,093 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:18:12,093 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:18:12,093 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-12 00:18:12,093 INFO L428 AbstractCegarLoop]: === Iteration 14 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:18:12,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:18:12,094 INFO L82 PathProgramCache]: Analyzing trace with hash 30277625, now seen corresponding path program 12 times [2021-03-12 00:18:12,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:18:12,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996124527] [2021-03-12 00:18:12,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:18:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:18:12,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:12,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:18:12,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:12,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:18:12,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:12,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:18:12,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:12,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:18:12,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:12,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:18:12,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:12,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:12,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:12,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:12,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:12,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:12,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:12,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:12,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:12,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:12,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:12,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:12,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:12,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:12,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:12,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:12,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:12,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:12,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:12,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:12,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:12,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:12,417 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 00:18:12,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:18:12,437 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-12 00:18:12,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:18:12,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:18:12,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996124527] [2021-03-12 00:18:12,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:18:12,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-12 00:18:12,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539645360] [2021-03-12 00:18:12,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-12 00:18:12,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:18:12,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-12 00:18:12,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-12 00:18:12,441 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-12 00:18:12,442 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 815 places, 3066 transitions, 40206 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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) [2021-03-12 00:18:12,442 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:18:12,442 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-12 00:18:12,442 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:18:18,293 INFO L129 PetriNetUnfolder]: 5296/8839 cut-off events. [2021-03-12 00:18:18,293 INFO L130 PetriNetUnfolder]: For 221680/221719 co-relation queries the response was YES. [2021-03-12 00:18:18,417 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71704 conditions, 8839 events. 5296/8839 cut-off events. For 221680/221719 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 57160 event pairs, 283 based on Foata normal form. 24/8243 useless extension candidates. Maximal degree in co-relation 71211. Up to 6639 conditions per place. [2021-03-12 00:18:18,462 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 2765 selfloop transitions, 639 changer transitions 0/3422 dead transitions. [2021-03-12 00:18:18,462 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 858 places, 3422 transitions, 53961 flow [2021-03-12 00:18:18,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-12 00:18:18,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-03-12 00:18:18,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2301 transitions. [2021-03-12 00:18:18,465 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6377494456762749 [2021-03-12 00:18:18,465 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2301 transitions. [2021-03-12 00:18:18,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2301 transitions. [2021-03-12 00:18:18,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:18:18,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2301 transitions. [2021-03-12 00:18:18,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 52.29545454545455) internal successors, (2301), 44 states have internal predecessors, (2301), 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) [2021-03-12 00:18:18,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 82.0) internal successors, (3690), 45 states have internal predecessors, (3690), 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) [2021-03-12 00:18:18,470 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 82.0) internal successors, (3690), 45 states have internal predecessors, (3690), 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) [2021-03-12 00:18:18,470 INFO L185 Difference]: Start difference. First operand has 815 places, 3066 transitions, 40206 flow. Second operand 44 states and 2301 transitions. [2021-03-12 00:18:18,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 858 places, 3422 transitions, 53961 flow [2021-03-12 00:18:21,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 858 places, 3422 transitions, 44417 flow, removed 4772 selfloop flow, removed 0 redundant places. [2021-03-12 00:18:21,742 INFO L241 Difference]: Finished difference. Result has 871 places, 3342 transitions, 37811 flow [2021-03-12 00:18:21,744 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=31276, PETRI_DIFFERENCE_MINUEND_PLACES=815, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3066, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=406, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=37811, PETRI_PLACES=871, PETRI_TRANSITIONS=3342} [2021-03-12 00:18:21,744 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 818 predicate places. [2021-03-12 00:18:21,745 INFO L480 AbstractCegarLoop]: Abstraction has has 871 places, 3342 transitions, 37811 flow [2021-03-12 00:18:21,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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) [2021-03-12 00:18:21,745 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:18:21,745 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:18:21,745 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-12 00:18:21,745 INFO L428 AbstractCegarLoop]: === Iteration 15 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:18:21,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:18:21,746 INFO L82 PathProgramCache]: Analyzing trace with hash -874901703, now seen corresponding path program 13 times [2021-03-12 00:18:21,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:18:21,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125104459] [2021-03-12 00:18:21,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:18:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:18:21,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:21,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:18:21,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:21,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:18:21,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:21,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:18:21,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:21,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:18:21,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:21,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:18:21,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:21,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:21,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:21,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:21,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:21,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:21,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:21,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:21,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:21,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:21,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:21,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:21,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:21,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:21,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:21,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:21,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:21,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:21,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:21,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:21,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:21,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:21,944 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 00:18:21,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:18:21,964 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-12 00:18:21,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:18:21,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:18:21,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125104459] [2021-03-12 00:18:21,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:18:21,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-12 00:18:21,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507916743] [2021-03-12 00:18:21,967 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-12 00:18:21,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:18:21,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-12 00:18:21,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-12 00:18:21,969 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-12 00:18:21,969 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 871 places, 3342 transitions, 37811 flow. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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) [2021-03-12 00:18:21,969 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:18:21,969 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-12 00:18:21,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:18:28,402 INFO L129 PetriNetUnfolder]: 5552/9307 cut-off events. [2021-03-12 00:18:28,402 INFO L130 PetriNetUnfolder]: For 231243/231284 co-relation queries the response was YES. [2021-03-12 00:18:28,559 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71976 conditions, 9307 events. 5552/9307 cut-off events. For 231243/231284 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 61453 event pairs, 320 based on Foata normal form. 26/8664 useless extension candidates. Maximal degree in co-relation 71425. Up to 6879 conditions per place. [2021-03-12 00:18:28,607 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 2822 selfloop transitions, 796 changer transitions 0/3636 dead transitions. [2021-03-12 00:18:28,608 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 936 places, 3636 transitions, 52725 flow [2021-03-12 00:18:28,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-03-12 00:18:28,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-03-12 00:18:28,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 3496 transitions. [2021-03-12 00:18:28,703 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6459719142645972 [2021-03-12 00:18:28,703 INFO L72 ComplementDD]: Start complementDD. Operand 66 states and 3496 transitions. [2021-03-12 00:18:28,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 3496 transitions. [2021-03-12 00:18:28,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:18:28,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 66 states and 3496 transitions. [2021-03-12 00:18:28,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 67 states, 66 states have (on average 52.96969696969697) internal successors, (3496), 66 states have internal predecessors, (3496), 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) [2021-03-12 00:18:28,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 67 states, 67 states have (on average 82.0) internal successors, (5494), 67 states have internal predecessors, (5494), 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) [2021-03-12 00:18:28,712 INFO L81 ComplementDD]: Finished complementDD. Result has 67 states, 67 states have (on average 82.0) internal successors, (5494), 67 states have internal predecessors, (5494), 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) [2021-03-12 00:18:28,712 INFO L185 Difference]: Start difference. First operand has 871 places, 3342 transitions, 37811 flow. Second operand 66 states and 3496 transitions. [2021-03-12 00:18:28,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 936 places, 3636 transitions, 52725 flow [2021-03-12 00:18:31,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 933 places, 3636 transitions, 50099 flow, removed 1213 selfloop flow, removed 3 redundant places. [2021-03-12 00:18:31,356 INFO L241 Difference]: Finished difference. Result has 956 places, 3576 transitions, 43192 flow [2021-03-12 00:18:31,358 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=35771, PETRI_DIFFERENCE_MINUEND_PLACES=868, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=595, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2715, PETRI_DIFFERENCE_SUBTRAHEND_STATES=66, PETRI_FLOW=43192, PETRI_PLACES=956, PETRI_TRANSITIONS=3576} [2021-03-12 00:18:31,358 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 903 predicate places. [2021-03-12 00:18:31,358 INFO L480 AbstractCegarLoop]: Abstraction has has 956 places, 3576 transitions, 43192 flow [2021-03-12 00:18:31,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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) [2021-03-12 00:18:31,358 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:18:31,358 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:18:31,359 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-12 00:18:31,359 INFO L428 AbstractCegarLoop]: === Iteration 16 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:18:31,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:18:31,359 INFO L82 PathProgramCache]: Analyzing trace with hash -639759391, now seen corresponding path program 14 times [2021-03-12 00:18:31,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:18:31,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491838103] [2021-03-12 00:18:31,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:18:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:18:31,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:31,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:18:31,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:31,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:18:31,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:31,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:18:31,390 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 00:18:31,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:18:31,395 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-12 00:18:31,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:18:31,402 INFO L142 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-03-12 00:18:31,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-12 00:18:31,416 INFO L142 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-03-12 00:18:31,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-12 00:18:31,429 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-12 00:18:31,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-12 00:18:31,442 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-12 00:18:31,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-12 00:18:31,456 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-12 00:18:31,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-12 00:18:31,471 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-12 00:18:31,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-12 00:18:31,487 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-12 00:18:31,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-12 00:18:31,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:31,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:31,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:31,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:31,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:31,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:31,564 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 00:18:31,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:18:31,584 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 00:18:31,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:18:31,605 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-12 00:18:31,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:18:31,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:18:31,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491838103] [2021-03-12 00:18:31,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:18:31,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-12 00:18:31,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422750811] [2021-03-12 00:18:31,608 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-12 00:18:31,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:18:31,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-12 00:18:31,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-12 00:18:31,609 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-12 00:18:31,609 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 956 places, 3576 transitions, 43192 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 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) [2021-03-12 00:18:31,609 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:18:31,609 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-12 00:18:31,610 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:18:37,800 INFO L129 PetriNetUnfolder]: 5863/9795 cut-off events. [2021-03-12 00:18:37,800 INFO L130 PetriNetUnfolder]: For 294743/294784 co-relation queries the response was YES. [2021-03-12 00:18:37,961 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81259 conditions, 9795 events. 5863/9795 cut-off events. For 294743/294784 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 65032 event pairs, 413 based on Foata normal form. 26/9126 useless extension candidates. Maximal degree in co-relation 80910. Up to 7357 conditions per place. [2021-03-12 00:18:38,012 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 3036 selfloop transitions, 814 changer transitions 0/3868 dead transitions. [2021-03-12 00:18:38,013 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 991 places, 3868 transitions, 58525 flow [2021-03-12 00:18:38,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-12 00:18:38,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-03-12 00:18:38,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1956 transitions. [2021-03-12 00:18:38,015 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6626016260162602 [2021-03-12 00:18:38,015 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1956 transitions. [2021-03-12 00:18:38,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1956 transitions. [2021-03-12 00:18:38,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:18:38,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1956 transitions. [2021-03-12 00:18:38,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 54.333333333333336) internal successors, (1956), 36 states have internal predecessors, (1956), 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) [2021-03-12 00:18:38,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 82.0) internal successors, (3034), 37 states have internal predecessors, (3034), 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) [2021-03-12 00:18:38,019 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 82.0) internal successors, (3034), 37 states have internal predecessors, (3034), 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) [2021-03-12 00:18:38,019 INFO L185 Difference]: Start difference. First operand has 956 places, 3576 transitions, 43192 flow. Second operand 36 states and 1956 transitions. [2021-03-12 00:18:38,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 991 places, 3868 transitions, 58525 flow [2021-03-12 00:18:41,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 979 places, 3868 transitions, 54307 flow, removed 1788 selfloop flow, removed 12 redundant places. [2021-03-12 00:18:41,596 INFO L241 Difference]: Finished difference. Result has 994 places, 3796 transitions, 47120 flow [2021-03-12 00:18:41,599 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=39084, PETRI_DIFFERENCE_MINUEND_PLACES=944, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=613, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2914, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=47120, PETRI_PLACES=994, PETRI_TRANSITIONS=3796} [2021-03-12 00:18:41,599 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 941 predicate places. [2021-03-12 00:18:41,599 INFO L480 AbstractCegarLoop]: Abstraction has has 994 places, 3796 transitions, 47120 flow [2021-03-12 00:18:41,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 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) [2021-03-12 00:18:41,599 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:18:41,599 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:18:41,599 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-12 00:18:41,600 INFO L428 AbstractCegarLoop]: === Iteration 17 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:18:41,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:18:41,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1412150019, now seen corresponding path program 15 times [2021-03-12 00:18:41,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:18:41,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928278216] [2021-03-12 00:18:41,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:18:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:18:41,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:41,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:18:41,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:41,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:18:41,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:41,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:18:41,678 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 00:18:41,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:18:41,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:41,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:18:41,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:41,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:41,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:41,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:41,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:41,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:41,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:41,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:41,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:41,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:41,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:41,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:41,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:41,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:41,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:41,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:41,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:41,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:41,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:41,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:41,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:41,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:41,843 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 00:18:41,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:18:41,863 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-12 00:18:41,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:18:41,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:18:41,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928278216] [2021-03-12 00:18:41,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:18:41,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-12 00:18:41,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687677535] [2021-03-12 00:18:41,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-12 00:18:41,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:18:41,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-12 00:18:41,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-12 00:18:41,867 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-12 00:18:41,867 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 994 places, 3796 transitions, 47120 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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) [2021-03-12 00:18:41,868 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:18:41,868 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-12 00:18:41,868 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:18:49,063 INFO L129 PetriNetUnfolder]: 6214/10357 cut-off events. [2021-03-12 00:18:49,063 INFO L130 PetriNetUnfolder]: For 364257/364296 co-relation queries the response was YES. [2021-03-12 00:18:49,242 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90267 conditions, 10357 events. 6214/10357 cut-off events. For 364257/364296 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 69318 event pairs, 359 based on Foata normal form. 24/9656 useless extension candidates. Maximal degree in co-relation 89680. Up to 7714 conditions per place. [2021-03-12 00:18:49,295 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 3183 selfloop transitions, 951 changer transitions 0/4152 dead transitions. [2021-03-12 00:18:49,296 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1052 places, 4152 transitions, 64354 flow [2021-03-12 00:18:49,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-03-12 00:18:49,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-03-12 00:18:49,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 3136 transitions. [2021-03-12 00:18:49,298 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6482017362546507 [2021-03-12 00:18:49,298 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 3136 transitions. [2021-03-12 00:18:49,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 3136 transitions. [2021-03-12 00:18:49,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:18:49,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 3136 transitions. [2021-03-12 00:18:49,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 53.152542372881356) internal successors, (3136), 59 states have internal predecessors, (3136), 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) [2021-03-12 00:18:49,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 82.0) internal successors, (4920), 60 states have internal predecessors, (4920), 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) [2021-03-12 00:18:49,303 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 82.0) internal successors, (4920), 60 states have internal predecessors, (4920), 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) [2021-03-12 00:18:49,303 INFO L185 Difference]: Start difference. First operand has 994 places, 3796 transitions, 47120 flow. Second operand 59 states and 3136 transitions. [2021-03-12 00:18:49,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1052 places, 4152 transitions, 64354 flow [2021-03-12 00:18:53,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1050 places, 4152 transitions, 61489 flow, removed 1412 selfloop flow, removed 2 redundant places. [2021-03-12 00:18:53,960 INFO L241 Difference]: Finished difference. Result has 1068 places, 4067 transitions, 53666 flow [2021-03-12 00:18:53,962 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=44409, PETRI_DIFFERENCE_MINUEND_PLACES=992, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3796, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=721, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3032, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=53666, PETRI_PLACES=1068, PETRI_TRANSITIONS=4067} [2021-03-12 00:18:53,963 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 1015 predicate places. [2021-03-12 00:18:53,963 INFO L480 AbstractCegarLoop]: Abstraction has has 1068 places, 4067 transitions, 53666 flow [2021-03-12 00:18:53,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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) [2021-03-12 00:18:53,963 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:18:53,963 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:18:53,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-12 00:18:53,963 INFO L428 AbstractCegarLoop]: === Iteration 18 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:18:53,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:18:53,964 INFO L82 PathProgramCache]: Analyzing trace with hash -554418933, now seen corresponding path program 16 times [2021-03-12 00:18:53,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:18:53,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896663556] [2021-03-12 00:18:53,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:18:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:18:53,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:53,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:18:53,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:53,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:18:53,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:53,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:18:53,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:53,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:18:54,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:54,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:18:54,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:54,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:54,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:54,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:54,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:54,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:54,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:54,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:54,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:54,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:18:54,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:54,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:18:54,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:54,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:18:54,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:54,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:54,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:54,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:54,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:54,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:54,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:54,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:54,164 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 00:18:54,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:18:54,183 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 00:18:54,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:18:54,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:18:54,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896663556] [2021-03-12 00:18:54,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:18:54,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-12 00:18:54,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800012792] [2021-03-12 00:18:54,186 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-12 00:18:54,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:18:54,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-12 00:18:54,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-12 00:18:54,187 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-12 00:18:54,188 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1068 places, 4067 transitions, 53666 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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) [2021-03-12 00:18:54,188 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:18:54,188 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-12 00:18:54,188 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:19:02,073 INFO L129 PetriNetUnfolder]: 6414/10750 cut-off events. [2021-03-12 00:19:02,073 INFO L130 PetriNetUnfolder]: For 386333/386374 co-relation queries the response was YES. [2021-03-12 00:19:02,278 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94595 conditions, 10750 events. 6414/10750 cut-off events. For 386333/386374 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 73228 event pairs, 350 based on Foata normal form. 26/10006 useless extension candidates. Maximal degree in co-relation 94209. Up to 8064 conditions per place. [2021-03-12 00:19:02,338 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 3423 selfloop transitions, 834 changer transitions 0/4275 dead transitions. [2021-03-12 00:19:02,339 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1120 places, 4275 transitions, 67329 flow [2021-03-12 00:19:02,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-03-12 00:19:02,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-03-12 00:19:02,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 2754 transitions. [2021-03-12 00:19:02,341 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6336861481822366 [2021-03-12 00:19:02,341 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 2754 transitions. [2021-03-12 00:19:02,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 2754 transitions. [2021-03-12 00:19:02,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:19:02,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 2754 transitions. [2021-03-12 00:19:02,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 51.9622641509434) internal successors, (2754), 53 states have internal predecessors, (2754), 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) [2021-03-12 00:19:02,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 82.0) internal successors, (4428), 54 states have internal predecessors, (4428), 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) [2021-03-12 00:19:02,345 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 82.0) internal successors, (4428), 54 states have internal predecessors, (4428), 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) [2021-03-12 00:19:02,346 INFO L185 Difference]: Start difference. First operand has 1068 places, 4067 transitions, 53666 flow. Second operand 53 states and 2754 transitions. [2021-03-12 00:19:02,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1120 places, 4275 transitions, 67329 flow [2021-03-12 00:19:07,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1106 places, 4275 transitions, 60988 flow, removed 2645 selfloop flow, removed 14 redundant places. [2021-03-12 00:19:07,540 INFO L241 Difference]: Finished difference. Result has 1120 places, 4236 transitions, 53293 flow [2021-03-12 00:19:07,543 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=47394, PETRI_DIFFERENCE_MINUEND_PLACES=1054, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4067, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=678, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=53293, PETRI_PLACES=1120, PETRI_TRANSITIONS=4236} [2021-03-12 00:19:07,544 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 1067 predicate places. [2021-03-12 00:19:07,544 INFO L480 AbstractCegarLoop]: Abstraction has has 1120 places, 4236 transitions, 53293 flow [2021-03-12 00:19:07,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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) [2021-03-12 00:19:07,544 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:19:07,544 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:19:07,544 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-12 00:19:07,544 INFO L428 AbstractCegarLoop]: === Iteration 19 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:19:07,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:19:07,544 INFO L82 PathProgramCache]: Analyzing trace with hash 442739819, now seen corresponding path program 17 times [2021-03-12 00:19:07,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:19:07,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854011510] [2021-03-12 00:19:07,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:19:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:19:07,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:07,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:19:07,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:07,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:19:07,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:07,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:19:07,581 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 00:19:07,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:19:07,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:07,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:19:07,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:07,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:07,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:07,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:07,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:07,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:07,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:07,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:07,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:07,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:07,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:07,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:19:07,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:07,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:19:07,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:07,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:07,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:07,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:07,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:07,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:07,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:07,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:07,722 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 00:19:07,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:19:07,741 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 00:19:07,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:19:07,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:19:07,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854011510] [2021-03-12 00:19:07,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:19:07,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-12 00:19:07,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149820930] [2021-03-12 00:19:07,754 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-12 00:19:07,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:19:07,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-12 00:19:07,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-12 00:19:07,755 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-12 00:19:07,756 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1120 places, 4236 transitions, 53293 flow. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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) [2021-03-12 00:19:07,756 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:19:07,756 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-12 00:19:07,756 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:19:15,515 INFO L129 PetriNetUnfolder]: 6596/11024 cut-off events. [2021-03-12 00:19:15,515 INFO L130 PetriNetUnfolder]: For 414665/414706 co-relation queries the response was YES. [2021-03-12 00:19:15,731 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97020 conditions, 11024 events. 6596/11024 cut-off events. For 414665/414706 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 75092 event pairs, 341 based on Foata normal form. 26/10300 useless extension candidates. Maximal degree in co-relation 96398. Up to 8310 conditions per place. [2021-03-12 00:19:15,788 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 3468 selfloop transitions, 985 changer transitions 0/4471 dead transitions. [2021-03-12 00:19:15,788 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1162 places, 4471 transitions, 67796 flow [2021-03-12 00:19:15,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-12 00:19:15,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-03-12 00:19:15,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 2305 transitions. [2021-03-12 00:19:15,792 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6537152580828134 [2021-03-12 00:19:15,792 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 2305 transitions. [2021-03-12 00:19:15,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 2305 transitions. [2021-03-12 00:19:15,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:19:15,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 2305 transitions. [2021-03-12 00:19:15,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 53.604651162790695) internal successors, (2305), 43 states have internal predecessors, (2305), 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) [2021-03-12 00:19:15,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 82.0) internal successors, (3608), 44 states have internal predecessors, (3608), 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) [2021-03-12 00:19:15,796 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 82.0) internal successors, (3608), 44 states have internal predecessors, (3608), 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) [2021-03-12 00:19:15,796 INFO L185 Difference]: Start difference. First operand has 1120 places, 4236 transitions, 53293 flow. Second operand 43 states and 2305 transitions. [2021-03-12 00:19:15,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1162 places, 4471 transitions, 67796 flow [2021-03-12 00:19:21,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1149 places, 4471 transitions, 64064 flow, removed 1451 selfloop flow, removed 13 redundant places. [2021-03-12 00:19:21,624 INFO L241 Difference]: Finished difference. Result has 1162 places, 4398 transitions, 55779 flow [2021-03-12 00:19:21,627 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=49689, PETRI_DIFFERENCE_MINUEND_PLACES=1107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=843, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=55779, PETRI_PLACES=1162, PETRI_TRANSITIONS=4398} [2021-03-12 00:19:21,627 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 1109 predicate places. [2021-03-12 00:19:21,627 INFO L480 AbstractCegarLoop]: Abstraction has has 1162 places, 4398 transitions, 55779 flow [2021-03-12 00:19:21,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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) [2021-03-12 00:19:21,627 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:19:21,627 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:19:21,627 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-12 00:19:21,627 INFO L428 AbstractCegarLoop]: === Iteration 20 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:19:21,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:19:21,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1577087533, now seen corresponding path program 18 times [2021-03-12 00:19:21,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:19:21,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362022627] [2021-03-12 00:19:21,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:19:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:19:21,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:21,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:19:21,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:21,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:19:21,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:21,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:19:21,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:21,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:19:21,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:21,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:19:21,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:21,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:21,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:21,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:21,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:21,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:21,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:21,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:21,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:21,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:19:21,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:21,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:19:21,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:21,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:21,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:21,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:21,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:21,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:21,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:21,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:21,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:21,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:21,821 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 00:19:21,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:19:21,839 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-12 00:19:21,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:19:21,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:19:21,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362022627] [2021-03-12 00:19:21,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:19:21,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-12 00:19:21,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888964375] [2021-03-12 00:19:21,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-12 00:19:21,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:19:21,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-12 00:19:21,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-12 00:19:21,843 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-12 00:19:21,844 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1162 places, 4398 transitions, 55779 flow. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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) [2021-03-12 00:19:21,844 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:19:21,844 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-12 00:19:21,844 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:19:29,991 INFO L129 PetriNetUnfolder]: 6679/11188 cut-off events. [2021-03-12 00:19:29,991 INFO L130 PetriNetUnfolder]: For 401088/401129 co-relation queries the response was YES. [2021-03-12 00:19:30,218 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97892 conditions, 11188 events. 6679/11188 cut-off events. For 401088/401129 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 76633 event pairs, 362 based on Foata normal form. 26/10435 useless extension candidates. Maximal degree in co-relation 97485. Up to 8546 conditions per place. [2021-03-12 00:19:30,276 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 3665 selfloop transitions, 835 changer transitions 0/4518 dead transitions. [2021-03-12 00:19:30,277 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1205 places, 4518 transitions, 68058 flow [2021-03-12 00:19:30,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-12 00:19:30,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-03-12 00:19:30,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2317 transitions. [2021-03-12 00:19:30,279 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6421840354767184 [2021-03-12 00:19:30,279 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2317 transitions. [2021-03-12 00:19:30,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2317 transitions. [2021-03-12 00:19:30,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:19:30,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2317 transitions. [2021-03-12 00:19:30,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 52.65909090909091) internal successors, (2317), 44 states have internal predecessors, (2317), 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) [2021-03-12 00:19:30,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 82.0) internal successors, (3690), 45 states have internal predecessors, (3690), 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) [2021-03-12 00:19:30,282 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 82.0) internal successors, (3690), 45 states have internal predecessors, (3690), 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) [2021-03-12 00:19:30,282 INFO L185 Difference]: Start difference. First operand has 1162 places, 4398 transitions, 55779 flow. Second operand 44 states and 2317 transitions. [2021-03-12 00:19:30,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1205 places, 4518 transitions, 68058 flow [2021-03-12 00:19:36,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1199 places, 4518 transitions, 65647 flow, removed 988 selfloop flow, removed 6 redundant places. [2021-03-12 00:19:36,468 INFO L241 Difference]: Finished difference. Result has 1206 places, 4483 transitions, 57768 flow [2021-03-12 00:19:36,471 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=53368, PETRI_DIFFERENCE_MINUEND_PLACES=1156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=763, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3628, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=57768, PETRI_PLACES=1206, PETRI_TRANSITIONS=4483} [2021-03-12 00:19:36,471 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 1153 predicate places. [2021-03-12 00:19:36,471 INFO L480 AbstractCegarLoop]: Abstraction has has 1206 places, 4483 transitions, 57768 flow [2021-03-12 00:19:36,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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) [2021-03-12 00:19:36,471 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:19:36,471 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:19:36,471 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-12 00:19:36,472 INFO L428 AbstractCegarLoop]: === Iteration 21 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:19:36,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:19:36,472 INFO L82 PathProgramCache]: Analyzing trace with hash 957610575, now seen corresponding path program 19 times [2021-03-12 00:19:36,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:19:36,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101461174] [2021-03-12 00:19:36,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:19:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:19:36,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:36,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:19:36,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:36,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:19:36,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:36,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:19:36,499 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 00:19:36,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:19:36,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:36,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:19:36,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:36,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:36,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:36,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:36,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:36,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:36,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:36,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:36,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:36,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:36,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:36,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:36,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:36,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:36,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:36,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:36,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:36,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:36,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:36,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:36,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:36,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:36,651 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 00:19:36,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:19:36,671 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-12 00:19:36,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:19:36,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:19:36,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101461174] [2021-03-12 00:19:36,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:19:36,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-12 00:19:36,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179796508] [2021-03-12 00:19:36,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-12 00:19:36,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:19:36,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-12 00:19:36,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-12 00:19:36,675 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-12 00:19:36,675 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1206 places, 4483 transitions, 57768 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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) [2021-03-12 00:19:36,675 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:19:36,675 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-12 00:19:36,675 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:19:45,300 INFO L129 PetriNetUnfolder]: 7063/11843 cut-off events. [2021-03-12 00:19:45,301 INFO L130 PetriNetUnfolder]: For 461469/461510 co-relation queries the response was YES. [2021-03-12 00:19:45,545 INFO L84 FinitePrefix]: Finished finitePrefix Result has 105664 conditions, 11843 events. 7063/11843 cut-off events. For 461469/461510 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 82152 event pairs, 357 based on Foata normal form. 26/11030 useless extension candidates. Maximal degree in co-relation 105248. Up to 8689 conditions per place. [2021-03-12 00:19:45,609 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 3681 selfloop transitions, 1114 changer transitions 0/4813 dead transitions. [2021-03-12 00:19:45,609 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1256 places, 4813 transitions, 74779 flow [2021-03-12 00:19:45,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-03-12 00:19:45,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-03-12 00:19:45,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 2705 transitions. [2021-03-12 00:19:45,611 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6468197034911526 [2021-03-12 00:19:45,611 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 2705 transitions. [2021-03-12 00:19:45,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 2705 transitions. [2021-03-12 00:19:45,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:19:45,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 2705 transitions. [2021-03-12 00:19:45,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 53.03921568627451) internal successors, (2705), 51 states have internal predecessors, (2705), 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) [2021-03-12 00:19:45,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 82.0) internal successors, (4264), 52 states have internal predecessors, (4264), 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) [2021-03-12 00:19:45,615 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 82.0) internal successors, (4264), 52 states have internal predecessors, (4264), 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) [2021-03-12 00:19:45,615 INFO L185 Difference]: Start difference. First operand has 1206 places, 4483 transitions, 57768 flow. Second operand 51 states and 2705 transitions. [2021-03-12 00:19:45,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1256 places, 4813 transitions, 74779 flow [2021-03-12 00:19:52,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1236 places, 4813 transitions, 71907 flow, removed 934 selfloop flow, removed 20 redundant places. [2021-03-12 00:19:52,312 INFO L241 Difference]: Finished difference. Result has 1255 places, 4724 transitions, 62753 flow [2021-03-12 00:19:52,314 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=54950, PETRI_DIFFERENCE_MINUEND_PLACES=1186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=895, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=62753, PETRI_PLACES=1255, PETRI_TRANSITIONS=4724} [2021-03-12 00:19:52,314 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 1202 predicate places. [2021-03-12 00:19:52,314 INFO L480 AbstractCegarLoop]: Abstraction has has 1255 places, 4724 transitions, 62753 flow [2021-03-12 00:19:52,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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) [2021-03-12 00:19:52,314 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:19:52,315 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:19:52,315 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-12 00:19:52,315 INFO L428 AbstractCegarLoop]: === Iteration 22 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:19:52,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:19:52,315 INFO L82 PathProgramCache]: Analyzing trace with hash -874320813, now seen corresponding path program 20 times [2021-03-12 00:19:52,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:19:52,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568021624] [2021-03-12 00:19:52,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:19:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:19:52,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:52,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:19:52,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:52,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:19:52,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:52,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:19:52,344 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 00:19:52,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:19:52,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:52,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:19:52,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:52,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:52,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:52,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:52,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:52,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:52,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:52,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:52,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:52,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:19:52,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:52,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:19:52,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:52,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:19:52,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:52,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:52,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:52,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:52,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:52,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:52,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:52,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:19:52,510 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-12 00:19:52,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:19:52,529 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 00:19:52,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:19:52,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:19:52,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568021624] [2021-03-12 00:19:52,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:19:52,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-12 00:19:52,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000403357] [2021-03-12 00:19:52,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-12 00:19:52,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:19:52,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-12 00:19:52,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-12 00:19:52,533 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-12 00:19:52,533 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1255 places, 4724 transitions, 62753 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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) [2021-03-12 00:19:52,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:19:52,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-12 00:19:52,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:20:04,316 INFO L129 PetriNetUnfolder]: 7528/12710 cut-off events. [2021-03-12 00:20:04,316 INFO L130 PetriNetUnfolder]: For 563123/563164 co-relation queries the response was YES. [2021-03-12 00:20:04,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120193 conditions, 12710 events. 7528/12710 cut-off events. For 563123/563164 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 90239 event pairs, 365 based on Foata normal form. 26/11827 useless extension candidates. Maximal degree in co-relation 119759. Up to 9009 conditions per place. [2021-03-12 00:20:04,667 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 3788 selfloop transitions, 1389 changer transitions 0/5195 dead transitions. [2021-03-12 00:20:04,668 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1355 places, 5195 transitions, 88063 flow [2021-03-12 00:20:04,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-03-12 00:20:04,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2021-03-12 00:20:04,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 5284 transitions. [2021-03-12 00:20:04,671 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6380101424776624 [2021-03-12 00:20:04,671 INFO L72 ComplementDD]: Start complementDD. Operand 101 states and 5284 transitions. [2021-03-12 00:20:04,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 101 states and 5284 transitions. [2021-03-12 00:20:04,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:20:04,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 101 states and 5284 transitions. [2021-03-12 00:20:04,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 102 states, 101 states have (on average 52.31683168316832) internal successors, (5284), 101 states have internal predecessors, (5284), 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) [2021-03-12 00:20:04,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 102 states, 102 states have (on average 82.0) internal successors, (8364), 102 states have internal predecessors, (8364), 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) [2021-03-12 00:20:04,679 INFO L81 ComplementDD]: Finished complementDD. Result has 102 states, 102 states have (on average 82.0) internal successors, (8364), 102 states have internal predecessors, (8364), 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) [2021-03-12 00:20:04,679 INFO L185 Difference]: Start difference. First operand has 1255 places, 4724 transitions, 62753 flow. Second operand 101 states and 5284 transitions. [2021-03-12 00:20:04,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1355 places, 5195 transitions, 88063 flow [2021-03-12 00:20:15,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1347 places, 5195 transitions, 82856 flow, removed 2161 selfloop flow, removed 8 redundant places. [2021-03-12 00:20:15,319 INFO L241 Difference]: Finished difference. Result has 1368 places, 5114 transitions, 73657 flow [2021-03-12 00:20:15,323 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=58778, PETRI_DIFFERENCE_MINUEND_PLACES=1247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1046, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=101, PETRI_FLOW=73657, PETRI_PLACES=1368, PETRI_TRANSITIONS=5114} [2021-03-12 00:20:15,323 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 1315 predicate places. [2021-03-12 00:20:15,323 INFO L480 AbstractCegarLoop]: Abstraction has has 1368 places, 5114 transitions, 73657 flow [2021-03-12 00:20:15,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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) [2021-03-12 00:20:15,323 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:20:15,323 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:20:15,323 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-12 00:20:15,323 INFO L428 AbstractCegarLoop]: === Iteration 23 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:20:15,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:20:15,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1668349539, now seen corresponding path program 21 times [2021-03-12 00:20:15,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:20:15,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299181079] [2021-03-12 00:20:15,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:20:15,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:20:15,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:20:15,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:20:15,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:20:15,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:20:15,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:20:15,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:20:15,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:20:15,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:20:15,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:20:15,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:20:15,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:20:15,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:20:15,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:20:15,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:20:15,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:20:15,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:20:15,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:20:15,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:20:15,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:20:15,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:20:15,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:20:15,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:20:15,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:20:15,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:20:15,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:20:15,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:20:15,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:20:15,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:20:15,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:20:15,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:20:15,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:20:15,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:20:15,516 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 00:20:15,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:20:15,537 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 00:20:15,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:20:15,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:20:15,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299181079] [2021-03-12 00:20:15,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:20:15,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-12 00:20:15,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651279360] [2021-03-12 00:20:15,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-12 00:20:15,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:20:15,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-12 00:20:15,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-12 00:20:15,541 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-12 00:20:15,541 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1368 places, 5114 transitions, 73657 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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) [2021-03-12 00:20:15,541 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:20:15,541 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-12 00:20:15,541 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:20:30,132 INFO L129 PetriNetUnfolder]: 8417/14124 cut-off events. [2021-03-12 00:20:30,132 INFO L130 PetriNetUnfolder]: For 703821/703862 co-relation queries the response was YES. [2021-03-12 00:20:30,473 INFO L84 FinitePrefix]: Finished finitePrefix Result has 140809 conditions, 14124 events. 8417/14124 cut-off events. For 703821/703862 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 101503 event pairs, 359 based on Foata normal form. 26/13174 useless extension candidates. Maximal degree in co-relation 140308. Up to 9694 conditions per place. [2021-03-12 00:20:30,552 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 3945 selfloop transitions, 2064 changer transitions 0/6027 dead transitions. [2021-03-12 00:20:30,553 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1467 places, 6027 transitions, 108383 flow [2021-03-12 00:20:30,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-03-12 00:20:30,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2021-03-12 00:20:30,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 5287 transitions. [2021-03-12 00:20:30,556 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6447560975609756 [2021-03-12 00:20:30,556 INFO L72 ComplementDD]: Start complementDD. Operand 100 states and 5287 transitions. [2021-03-12 00:20:30,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 100 states and 5287 transitions. [2021-03-12 00:20:30,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:20:30,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 100 states and 5287 transitions. [2021-03-12 00:20:30,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 101 states, 100 states have (on average 52.87) internal successors, (5287), 100 states have internal predecessors, (5287), 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) [2021-03-12 00:20:30,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 101 states, 101 states have (on average 82.0) internal successors, (8282), 101 states have internal predecessors, (8282), 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) [2021-03-12 00:20:30,564 INFO L81 ComplementDD]: Finished complementDD. Result has 101 states, 101 states have (on average 82.0) internal successors, (8282), 101 states have internal predecessors, (8282), 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) [2021-03-12 00:20:30,564 INFO L185 Difference]: Start difference. First operand has 1368 places, 5114 transitions, 73657 flow. Second operand 100 states and 5287 transitions. [2021-03-12 00:20:30,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1467 places, 6027 transitions, 108383 flow [2021-03-12 00:20:45,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1461 places, 6027 transitions, 99821 flow, removed 4161 selfloop flow, removed 6 redundant places. [2021-03-12 00:20:45,332 INFO L241 Difference]: Finished difference. Result has 1485 places, 5898 transitions, 90311 flow [2021-03-12 00:20:45,335 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=65099, PETRI_DIFFERENCE_MINUEND_PLACES=1362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1347, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3635, PETRI_DIFFERENCE_SUBTRAHEND_STATES=100, PETRI_FLOW=90311, PETRI_PLACES=1485, PETRI_TRANSITIONS=5898} [2021-03-12 00:20:45,336 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 1432 predicate places. [2021-03-12 00:20:45,336 INFO L480 AbstractCegarLoop]: Abstraction has has 1485 places, 5898 transitions, 90311 flow [2021-03-12 00:20:45,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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) [2021-03-12 00:20:45,336 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:20:45,336 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:20:45,336 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-12 00:20:45,336 INFO L428 AbstractCegarLoop]: === Iteration 24 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:20:45,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:20:45,336 INFO L82 PathProgramCache]: Analyzing trace with hash -755012389, now seen corresponding path program 22 times [2021-03-12 00:20:45,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:20:45,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548324032] [2021-03-12 00:20:45,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:20:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:20:45,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:20:45,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:20:45,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:20:45,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:20:45,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:20:45,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:20:45,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:20:45,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:20:45,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:20:45,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:20:45,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:20:45,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:20:45,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:20:45,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:20:45,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:20:45,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:20:45,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:20:45,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:20:45,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:20:45,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:20:45,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:20:45,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:20:45,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:20:45,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:20:45,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:20:45,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:20:45,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:20:45,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:20:45,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:20:45,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:20:45,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:20:45,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:20:45,526 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 00:20:45,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:20:45,546 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 00:20:45,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:20:45,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:20:45,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548324032] [2021-03-12 00:20:45,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:20:45,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-12 00:20:45,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736258334] [2021-03-12 00:20:45,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-12 00:20:45,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:20:45,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-12 00:20:45,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-12 00:20:45,550 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-12 00:20:45,551 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1485 places, 5898 transitions, 90311 flow. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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) [2021-03-12 00:20:45,551 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:20:45,551 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-12 00:20:45,551 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:20:50,645 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2021-03-12 00:20:59,819 INFO L129 PetriNetUnfolder]: 8528/14329 cut-off events. [2021-03-12 00:20:59,819 INFO L130 PetriNetUnfolder]: For 716703/716742 co-relation queries the response was YES. [2021-03-12 00:21:00,252 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142600 conditions, 14329 events. 8528/14329 cut-off events. For 716703/716742 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 103293 event pairs, 397 based on Foata normal form. 24/13368 useless extension candidates. Maximal degree in co-relation 142131. Up to 10878 conditions per place. [2021-03-12 00:21:00,333 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 4791 selfloop transitions, 1255 changer transitions 0/6064 dead transitions. [2021-03-12 00:21:00,333 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1522 places, 6064 transitions, 107467 flow [2021-03-12 00:21:00,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-12 00:21:00,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-03-12 00:21:00,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1998 transitions. [2021-03-12 00:21:00,335 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.641206675224647 [2021-03-12 00:21:00,335 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1998 transitions. [2021-03-12 00:21:00,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1998 transitions. [2021-03-12 00:21:00,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:21:00,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1998 transitions. [2021-03-12 00:21:00,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.578947368421055) internal successors, (1998), 38 states have internal predecessors, (1998), 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) [2021-03-12 00:21:00,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 82.0) internal successors, (3198), 39 states have internal predecessors, (3198), 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) [2021-03-12 00:21:00,338 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 82.0) internal successors, (3198), 39 states have internal predecessors, (3198), 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) [2021-03-12 00:21:00,338 INFO L185 Difference]: Start difference. First operand has 1485 places, 5898 transitions, 90311 flow. Second operand 38 states and 1998 transitions. [2021-03-12 00:21:00,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1522 places, 6064 transitions, 107467 flow [2021-03-12 00:21:14,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1512 places, 6064 transitions, 94830 flow, removed 5985 selfloop flow, removed 10 redundant places. [2021-03-12 00:21:14,821 INFO L241 Difference]: Finished difference. Result has 1520 places, 6029 transitions, 84891 flow [2021-03-12 00:21:14,825 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=78236, PETRI_DIFFERENCE_MINUEND_PLACES=1475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5898, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4737, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=84891, PETRI_PLACES=1520, PETRI_TRANSITIONS=6029} [2021-03-12 00:21:14,825 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 1467 predicate places. [2021-03-12 00:21:14,825 INFO L480 AbstractCegarLoop]: Abstraction has has 1520 places, 6029 transitions, 84891 flow [2021-03-12 00:21:14,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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) [2021-03-12 00:21:14,826 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:21:14,826 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:21:14,826 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-12 00:21:14,826 INFO L428 AbstractCegarLoop]: === Iteration 25 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:21:14,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:21:14,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1401437127, now seen corresponding path program 23 times [2021-03-12 00:21:14,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:21:14,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498766248] [2021-03-12 00:21:14,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:21:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:21:14,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:21:14,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:21:14,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:21:14,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:21:14,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:21:14,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:21:14,855 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 00:21:14,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:21:14,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:21:14,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:21:14,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:21:14,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:21:14,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:21:14,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:21:14,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:21:14,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:21:14,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:21:14,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:21:14,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:21:14,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:21:14,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:21:14,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:21:14,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:21:14,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:21:14,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:21:14,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:21:14,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:21:14,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:21:14,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:21:14,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:21:15,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:21:15,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:21:15,025 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 00:21:15,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:21:15,048 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 00:21:15,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:21:15,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:21:15,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498766248] [2021-03-12 00:21:15,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:21:15,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-12 00:21:15,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708026646] [2021-03-12 00:21:15,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-12 00:21:15,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:21:15,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-12 00:21:15,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-12 00:21:15,055 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-12 00:21:15,056 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1520 places, 6029 transitions, 84891 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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) [2021-03-12 00:21:15,056 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:21:15,056 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-12 00:21:15,056 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:21:31,430 INFO L129 PetriNetUnfolder]: 9015/15303 cut-off events. [2021-03-12 00:21:31,430 INFO L130 PetriNetUnfolder]: For 669685/669726 co-relation queries the response was YES. [2021-03-12 00:21:31,937 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143522 conditions, 15303 events. 9015/15303 cut-off events. For 669685/669726 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 113321 event pairs, 379 based on Foata normal form. 26/14234 useless extension candidates. Maximal degree in co-relation 143028. Up to 10833 conditions per place. [2021-03-12 00:21:32,027 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 4888 selfloop transitions, 1678 changer transitions 0/6584 dead transitions. [2021-03-12 00:21:32,027 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1604 places, 6584 transitions, 111367 flow [2021-03-12 00:21:32,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-03-12 00:21:32,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2021-03-12 00:21:32,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 4516 transitions. [2021-03-12 00:21:32,030 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6479196556671449 [2021-03-12 00:21:32,030 INFO L72 ComplementDD]: Start complementDD. Operand 85 states and 4516 transitions. [2021-03-12 00:21:32,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 85 states and 4516 transitions. [2021-03-12 00:21:32,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:21:32,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 85 states and 4516 transitions. [2021-03-12 00:21:32,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 86 states, 85 states have (on average 53.129411764705885) internal successors, (4516), 85 states have internal predecessors, (4516), 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) [2021-03-12 00:21:32,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 86 states, 86 states have (on average 82.0) internal successors, (7052), 86 states have internal predecessors, (7052), 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) [2021-03-12 00:21:32,037 INFO L81 ComplementDD]: Finished complementDD. Result has 86 states, 86 states have (on average 82.0) internal successors, (7052), 86 states have internal predecessors, (7052), 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) [2021-03-12 00:21:32,037 INFO L185 Difference]: Start difference. First operand has 1520 places, 6029 transitions, 84891 flow. Second operand 85 states and 4516 transitions. [2021-03-12 00:21:32,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1604 places, 6584 transitions, 111367 flow [2021-03-12 00:21:44,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1592 places, 6584 transitions, 107077 flow, removed 1659 selfloop flow, removed 12 redundant places. [2021-03-12 00:21:44,716 INFO L241 Difference]: Finished difference. Result has 1641 places, 6446 transitions, 95291 flow [2021-03-12 00:21:44,720 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=80675, PETRI_DIFFERENCE_MINUEND_PLACES=1508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6029, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1305, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=85, PETRI_FLOW=95291, PETRI_PLACES=1641, PETRI_TRANSITIONS=6446} [2021-03-12 00:21:44,720 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 1588 predicate places. [2021-03-12 00:21:44,720 INFO L480 AbstractCegarLoop]: Abstraction has has 1641 places, 6446 transitions, 95291 flow [2021-03-12 00:21:44,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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) [2021-03-12 00:21:44,721 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:21:44,721 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:21:44,721 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-12 00:21:44,721 INFO L428 AbstractCegarLoop]: === Iteration 26 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:21:44,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:21:44,721 INFO L82 PathProgramCache]: Analyzing trace with hash -221525807, now seen corresponding path program 24 times [2021-03-12 00:21:44,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:21:44,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626522447] [2021-03-12 00:21:44,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:21:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:21:44,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:21:44,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:21:44,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:21:44,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:21:44,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:21:44,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:21:44,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:21:44,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:21:44,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:21:44,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:21:44,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:21:44,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:21:44,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:21:44,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:21:44,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:21:44,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:21:44,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:21:44,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:21:44,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:21:44,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:21:44,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:21:44,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:21:44,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:21:44,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:21:44,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:21:44,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:21:44,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:21:44,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:21:44,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:21:44,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:21:44,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:21:44,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:21:44,937 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 00:21:44,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:21:44,961 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 00:21:44,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:21:44,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:21:44,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626522447] [2021-03-12 00:21:44,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:21:44,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-12 00:21:44,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407353423] [2021-03-12 00:21:44,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-12 00:21:44,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:21:44,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-12 00:21:44,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-12 00:21:44,971 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-12 00:21:44,972 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1641 places, 6446 transitions, 95291 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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) [2021-03-12 00:21:44,972 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:21:44,972 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-12 00:21:44,972 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:22:03,899 INFO L129 PetriNetUnfolder]: 9630/16481 cut-off events. [2021-03-12 00:22:03,899 INFO L130 PetriNetUnfolder]: For 813898/813939 co-relation queries the response was YES. [2021-03-12 00:22:04,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 164913 conditions, 16481 events. 9630/16481 cut-off events. For 813898/813939 co-relation queries the response was YES. Maximal size of possible extension queue 824. Compared 125332 event pairs, 369 based on Foata normal form. 27/15313 useless extension candidates. Maximal degree in co-relation 164414. Up to 10363 conditions per place. [2021-03-12 00:22:04,600 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 4285 selfloop transitions, 2841 changer transitions 0/7144 dead transitions. [2021-03-12 00:22:04,600 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1734 places, 7144 transitions, 132517 flow [2021-03-12 00:22:04,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-03-12 00:22:04,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2021-03-12 00:22:04,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 4964 transitions. [2021-03-12 00:22:04,603 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6440062272963155 [2021-03-12 00:22:04,603 INFO L72 ComplementDD]: Start complementDD. Operand 94 states and 4964 transitions. [2021-03-12 00:22:04,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 4964 transitions. [2021-03-12 00:22:04,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:22:04,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 94 states and 4964 transitions. [2021-03-12 00:22:04,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 95 states, 94 states have (on average 52.808510638297875) internal successors, (4964), 94 states have internal predecessors, (4964), 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) [2021-03-12 00:22:04,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 95 states, 95 states have (on average 82.0) internal successors, (7790), 95 states have internal predecessors, (7790), 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) [2021-03-12 00:22:04,610 INFO L81 ComplementDD]: Finished complementDD. Result has 95 states, 95 states have (on average 82.0) internal successors, (7790), 95 states have internal predecessors, (7790), 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) [2021-03-12 00:22:04,610 INFO L185 Difference]: Start difference. First operand has 1641 places, 6446 transitions, 95291 flow. Second operand 94 states and 4964 transitions. [2021-03-12 00:22:04,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1734 places, 7144 transitions, 132517 flow [2021-03-12 00:22:22,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1723 places, 7144 transitions, 125525 flow, removed 3095 selfloop flow, removed 11 redundant places. [2021-03-12 00:22:22,926 INFO L241 Difference]: Finished difference. Result has 1751 places, 6997 transitions, 115294 flow [2021-03-12 00:22:22,930 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=90498, PETRI_DIFFERENCE_MINUEND_PLACES=1630, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2351, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3932, PETRI_DIFFERENCE_SUBTRAHEND_STATES=94, PETRI_FLOW=115294, PETRI_PLACES=1751, PETRI_TRANSITIONS=6997} [2021-03-12 00:22:22,930 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 1698 predicate places. [2021-03-12 00:22:22,930 INFO L480 AbstractCegarLoop]: Abstraction has has 1751 places, 6997 transitions, 115294 flow [2021-03-12 00:22:22,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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) [2021-03-12 00:22:22,931 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:22:22,931 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:22:22,931 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-12 00:22:22,931 INFO L428 AbstractCegarLoop]: === Iteration 27 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:22:22,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:22:22,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1216404707, now seen corresponding path program 25 times [2021-03-12 00:22:22,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:22:22,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843476883] [2021-03-12 00:22:22,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:22:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:22:22,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:22,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:22:22,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:22,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:22,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:22,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:22,960 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 00:22:22,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:22,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:22,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:22:22,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:22,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:22:22,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:22,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:22:23,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:23,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:22:23,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:23,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:22:23,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:23,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:22:23,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:23,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:22:23,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:23,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:22:23,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:23,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:22:23,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:23,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:22:23,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:23,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:22:23,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:23,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:22:23,126 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 00:22:23,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:22:23,146 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-12 00:22:23,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:22:23,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:22:23,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843476883] [2021-03-12 00:22:23,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:22:23,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-12 00:22:23,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946144103] [2021-03-12 00:22:23,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-12 00:22:23,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:22:23,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-12 00:22:23,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-12 00:22:23,150 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-12 00:22:23,150 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1751 places, 6997 transitions, 115294 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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) [2021-03-12 00:22:23,151 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:22:23,151 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-12 00:22:23,151 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:22:44,995 INFO L129 PetriNetUnfolder]: 9721/16640 cut-off events. [2021-03-12 00:22:44,996 INFO L130 PetriNetUnfolder]: For 866509/866550 co-relation queries the response was YES. [2021-03-12 00:22:45,624 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170853 conditions, 16640 events. 9721/16640 cut-off events. For 866509/866550 co-relation queries the response was YES. Maximal size of possible extension queue 845. Compared 126813 event pairs, 402 based on Foata normal form. 26/15472 useless extension candidates. Maximal degree in co-relation 170346. Up to 12422 conditions per place. [2021-03-12 00:22:45,744 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 5902 selfloop transitions, 1270 changer transitions 0/7190 dead transitions. [2021-03-12 00:22:45,745 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1797 places, 7190 transitions, 135513 flow [2021-03-12 00:22:45,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-03-12 00:22:45,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-03-12 00:22:45,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 2505 transitions. [2021-03-12 00:22:45,749 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6499740529320187 [2021-03-12 00:22:45,749 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 2505 transitions. [2021-03-12 00:22:45,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 2505 transitions. [2021-03-12 00:22:45,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:22:45,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 2505 transitions. [2021-03-12 00:22:45,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 53.297872340425535) internal successors, (2505), 47 states have internal predecessors, (2505), 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) [2021-03-12 00:22:45,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 82.0) internal successors, (3936), 48 states have internal predecessors, (3936), 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) [2021-03-12 00:22:45,752 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 82.0) internal successors, (3936), 48 states have internal predecessors, (3936), 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) [2021-03-12 00:22:45,752 INFO L185 Difference]: Start difference. First operand has 1751 places, 6997 transitions, 115294 flow. Second operand 47 states and 2505 transitions. [2021-03-12 00:22:45,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1797 places, 7190 transitions, 135513 flow [2021-03-12 00:23:07,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1773 places, 7190 transitions, 125690 flow, removed 4535 selfloop flow, removed 24 redundant places. [2021-03-12 00:23:07,670 INFO L241 Difference]: Finished difference. Result has 1787 places, 7113 transitions, 112156 flow [2021-03-12 00:23:07,672 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=105487, PETRI_DIFFERENCE_MINUEND_PLACES=1727, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6997, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5814, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=112156, PETRI_PLACES=1787, PETRI_TRANSITIONS=7113} [2021-03-12 00:23:07,672 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 1734 predicate places. [2021-03-12 00:23:07,672 INFO L480 AbstractCegarLoop]: Abstraction has has 1787 places, 7113 transitions, 112156 flow [2021-03-12 00:23:07,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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) [2021-03-12 00:23:07,673 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:23:07,673 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:23:07,673 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-12 00:23:07,673 INFO L428 AbstractCegarLoop]: === Iteration 28 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:23:07,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:23:07,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1237492217, now seen corresponding path program 26 times [2021-03-12 00:23:07,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:23:07,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815426664] [2021-03-12 00:23:07,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:23:07,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:23:07,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:23:07,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:23:07,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:23:07,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:23:07,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:23:07,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:23:07,715 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 00:23:07,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:23:07,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:23:07,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:23:07,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:23:07,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:23:07,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:23:07,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:23:07,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:23:07,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:23:07,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:23:07,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:23:07,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:23:07,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:23:07,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:23:07,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:23:07,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:23:07,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:23:07,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:23:07,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:23:07,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:23:07,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:23:07,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:23:07,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:23:07,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:23:07,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:23:07,901 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 00:23:07,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:23:07,922 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-12 00:23:07,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:23:07,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:23:07,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815426664] [2021-03-12 00:23:07,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:23:07,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-12 00:23:07,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455794153] [2021-03-12 00:23:07,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-12 00:23:07,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:23:07,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-12 00:23:07,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-03-12 00:23:07,925 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-12 00:23:07,926 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1787 places, 7113 transitions, 112156 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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) [2021-03-12 00:23:07,926 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:23:07,926 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-12 00:23:07,926 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:23:30,762 INFO L129 PetriNetUnfolder]: 10142/17486 cut-off events. [2021-03-12 00:23:30,763 INFO L130 PetriNetUnfolder]: For 949066/949107 co-relation queries the response was YES. [2021-03-12 00:23:31,352 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178778 conditions, 17486 events. 10142/17486 cut-off events. For 949066/949107 co-relation queries the response was YES. Maximal size of possible extension queue 869. Compared 135692 event pairs, 411 based on Foata normal form. 26/16230 useless extension candidates. Maximal degree in co-relation 178259. Up to 12284 conditions per place. [2021-03-12 00:23:31,461 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 5749 selfloop transitions, 1882 changer transitions 0/7649 dead transitions. [2021-03-12 00:23:31,461 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1863 places, 7649 transitions, 144111 flow [2021-03-12 00:23:31,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-03-12 00:23:31,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-03-12 00:23:31,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 4081 transitions. [2021-03-12 00:23:31,464 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6463414634146342 [2021-03-12 00:23:31,464 INFO L72 ComplementDD]: Start complementDD. Operand 77 states and 4081 transitions. [2021-03-12 00:23:31,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 4081 transitions. [2021-03-12 00:23:31,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:23:31,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 77 states and 4081 transitions. [2021-03-12 00:23:31,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 78 states, 77 states have (on average 53.0) internal successors, (4081), 77 states have internal predecessors, (4081), 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) [2021-03-12 00:23:31,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 78 states, 78 states have (on average 82.0) internal successors, (6396), 78 states have internal predecessors, (6396), 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) [2021-03-12 00:23:31,470 INFO L81 ComplementDD]: Finished complementDD. Result has 78 states, 78 states have (on average 82.0) internal successors, (6396), 78 states have internal predecessors, (6396), 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) [2021-03-12 00:23:31,470 INFO L185 Difference]: Start difference. First operand has 1787 places, 7113 transitions, 112156 flow. Second operand 77 states and 4081 transitions. [2021-03-12 00:23:31,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1863 places, 7649 transitions, 144111 flow [2021-03-12 00:23:53,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1847 places, 7649 transitions, 139047 flow, removed 2037 selfloop flow, removed 16 redundant places. [2021-03-12 00:23:53,681 INFO L241 Difference]: Finished difference. Result has 1881 places, 7518 transitions, 126537 flow [2021-03-12 00:23:53,685 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=108338, PETRI_DIFFERENCE_MINUEND_PLACES=1771, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1550, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=77, PETRI_FLOW=126537, PETRI_PLACES=1881, PETRI_TRANSITIONS=7518} [2021-03-12 00:23:53,685 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 1828 predicate places. [2021-03-12 00:23:53,685 INFO L480 AbstractCegarLoop]: Abstraction has has 1881 places, 7518 transitions, 126537 flow [2021-03-12 00:23:53,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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) [2021-03-12 00:23:53,686 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:23:53,686 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:23:53,686 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-12 00:23:53,686 INFO L428 AbstractCegarLoop]: === Iteration 29 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:23:53,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:23:53,686 INFO L82 PathProgramCache]: Analyzing trace with hash 933923299, now seen corresponding path program 27 times [2021-03-12 00:23:53,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:23:53,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049405956] [2021-03-12 00:23:53,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:23:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:23:53,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:23:53,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:23:53,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:23:53,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:23:53,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:23:53,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:23:53,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:23:53,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:23:53,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:23:53,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:23:53,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:23:53,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:23:53,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:23:53,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:23:53,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:23:53,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:23:53,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:23:53,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:23:53,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:23:53,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:23:53,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:23:53,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:23:53,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:23:53,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:23:53,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:23:53,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:23:53,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:23:53,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:23:53,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:23:53,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:23:53,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:23:53,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:23:53,875 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 00:23:53,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:23:53,894 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 00:23:53,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:23:53,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:23:53,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049405956] [2021-03-12 00:23:53,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:23:53,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-12 00:23:53,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822381941] [2021-03-12 00:23:53,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-12 00:23:53,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:23:53,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-12 00:23:53,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-12 00:23:53,897 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-12 00:23:53,898 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1881 places, 7518 transitions, 126537 flow. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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) [2021-03-12 00:23:53,898 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:23:53,898 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-12 00:23:53,898 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:24:14,978 INFO L129 PetriNetUnfolder]: 10163/17562 cut-off events. [2021-03-12 00:24:14,978 INFO L130 PetriNetUnfolder]: For 929305/929344 co-relation queries the response was YES. [2021-03-12 00:24:15,720 INFO L84 FinitePrefix]: Finished finitePrefix Result has 180750 conditions, 17562 events. 10163/17562 cut-off events. For 929305/929344 co-relation queries the response was YES. Maximal size of possible extension queue 868. Compared 136820 event pairs, 423 based on Foata normal form. 24/16286 useless extension candidates. Maximal degree in co-relation 180211. Up to 13162 conditions per place. [2021-03-12 00:24:15,819 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 6456 selfloop transitions, 1109 changer transitions 0/7583 dead transitions. [2021-03-12 00:24:15,820 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1914 places, 7583 transitions, 143782 flow [2021-03-12 00:24:15,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-12 00:24:15,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-03-12 00:24:15,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1789 transitions. [2021-03-12 00:24:15,821 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6416786226685797 [2021-03-12 00:24:15,821 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1789 transitions. [2021-03-12 00:24:15,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1789 transitions. [2021-03-12 00:24:15,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:24:15,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1789 transitions. [2021-03-12 00:24:15,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.61764705882353) internal successors, (1789), 34 states have internal predecessors, (1789), 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) [2021-03-12 00:24:15,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 82.0) internal successors, (2870), 35 states have internal predecessors, (2870), 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) [2021-03-12 00:24:15,824 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 82.0) internal successors, (2870), 35 states have internal predecessors, (2870), 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) [2021-03-12 00:24:15,824 INFO L185 Difference]: Start difference. First operand has 1881 places, 7518 transitions, 126537 flow. Second operand 34 states and 1789 transitions. [2021-03-12 00:24:15,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1914 places, 7583 transitions, 143782 flow [2021-03-12 00:24:40,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1902 places, 7583 transitions, 135135 flow, removed 4003 selfloop flow, removed 12 redundant places. [2021-03-12 00:24:40,354 INFO L241 Difference]: Finished difference. Result has 1905 places, 7542 transitions, 121352 flow [2021-03-12 00:24:40,358 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=117894, PETRI_DIFFERENCE_MINUEND_PLACES=1869, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1090, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=121352, PETRI_PLACES=1905, PETRI_TRANSITIONS=7542} [2021-03-12 00:24:40,358 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 1852 predicate places. [2021-03-12 00:24:40,358 INFO L480 AbstractCegarLoop]: Abstraction has has 1905 places, 7542 transitions, 121352 flow [2021-03-12 00:24:40,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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) [2021-03-12 00:24:40,358 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:24:40,358 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:24:40,358 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-12 00:24:40,359 INFO L428 AbstractCegarLoop]: === Iteration 30 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:24:40,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:24:40,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1993299713, now seen corresponding path program 28 times [2021-03-12 00:24:40,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:24:40,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433676075] [2021-03-12 00:24:40,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:24:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:24:40,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:24:40,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:24:40,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:24:40,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:24:40,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:24:40,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:24:40,399 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 00:24:40,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:24:40,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:24:40,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:24:40,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:24:40,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:24:40,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:24:40,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:24:40,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:24:40,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:24:40,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:24:40,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:24:40,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:24:40,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:24:40,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:24:40,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:24:40,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:24:40,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:24:40,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:24:40,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:24:40,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:24:40,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:24:40,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:24:40,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:24:40,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:24:40,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:24:40,580 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 00:24:40,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:24:40,600 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 00:24:40,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:24:40,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:24:40,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433676075] [2021-03-12 00:24:40,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:24:40,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-12 00:24:40,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556047891] [2021-03-12 00:24:40,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-12 00:24:40,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:24:40,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-12 00:24:40,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-12 00:24:40,606 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-12 00:24:40,606 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1905 places, 7542 transitions, 121352 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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) [2021-03-12 00:24:40,606 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:24:40,606 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-12 00:24:40,606 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:24:52,504 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2021-03-12 00:25:07,334 INFO L129 PetriNetUnfolder]: 10624/18302 cut-off events. [2021-03-12 00:25:07,335 INFO L130 PetriNetUnfolder]: For 991168/991207 co-relation queries the response was YES. [2021-03-12 00:25:08,965 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192132 conditions, 18302 events. 10624/18302 cut-off events. For 991168/991207 co-relation queries the response was YES. Maximal size of possible extension queue 888. Compared 142784 event pairs, 430 based on Foata normal form. 25/16983 useless extension candidates. Maximal degree in co-relation 191590. Up to 13251 conditions per place. [2021-03-12 00:25:09,175 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 6301 selfloop transitions, 1699 changer transitions 0/8018 dead transitions. [2021-03-12 00:25:09,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1978 places, 8018 transitions, 157052 flow [2021-03-12 00:25:09,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-03-12 00:25:09,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-03-12 00:25:09,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 3970 transitions. [2021-03-12 00:25:09,178 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6542518127883982 [2021-03-12 00:25:09,178 INFO L72 ComplementDD]: Start complementDD. Operand 74 states and 3970 transitions. [2021-03-12 00:25:09,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 3970 transitions. [2021-03-12 00:25:09,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:25:09,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 74 states and 3970 transitions. [2021-03-12 00:25:09,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 75 states, 74 states have (on average 53.648648648648646) internal successors, (3970), 74 states have internal predecessors, (3970), 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) [2021-03-12 00:25:09,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 75 states, 75 states have (on average 82.0) internal successors, (6150), 75 states have internal predecessors, (6150), 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) [2021-03-12 00:25:09,184 INFO L81 ComplementDD]: Finished complementDD. Result has 75 states, 75 states have (on average 82.0) internal successors, (6150), 75 states have internal predecessors, (6150), 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) [2021-03-12 00:25:09,184 INFO L185 Difference]: Start difference. First operand has 1905 places, 7542 transitions, 121352 flow. Second operand 74 states and 3970 transitions. [2021-03-12 00:25:09,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1978 places, 8018 transitions, 157052 flow [2021-03-12 00:25:35,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1961 places, 8018 transitions, 154665 flow, removed 501 selfloop flow, removed 17 redundant places. [2021-03-12 00:25:35,546 INFO L241 Difference]: Finished difference. Result has 1982 places, 7963 transitions, 140907 flow [2021-03-12 00:25:35,550 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=118965, PETRI_DIFFERENCE_MINUEND_PLACES=1888, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1334, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=74, PETRI_FLOW=140907, PETRI_PLACES=1982, PETRI_TRANSITIONS=7963} [2021-03-12 00:25:35,550 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 1929 predicate places. [2021-03-12 00:25:35,550 INFO L480 AbstractCegarLoop]: Abstraction has has 1982 places, 7963 transitions, 140907 flow [2021-03-12 00:25:35,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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) [2021-03-12 00:25:35,551 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:25:35,551 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:25:35,551 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-12 00:25:35,551 INFO L428 AbstractCegarLoop]: === Iteration 31 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:25:35,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:25:35,551 INFO L82 PathProgramCache]: Analyzing trace with hash 628606913, now seen corresponding path program 29 times [2021-03-12 00:25:35,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:25:35,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159571659] [2021-03-12 00:25:35,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:25:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:25:35,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:25:35,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:25:35,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:25:35,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:25:35,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:25:35,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:25:35,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:25:35,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:25:35,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:25:35,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:25:35,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:25:35,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:25:35,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:25:35,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:25:35,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:25:35,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:25:35,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:25:35,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:25:35,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:25:35,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:25:35,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:25:35,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:25:35,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:25:35,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:25:35,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:25:35,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:25:35,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:25:35,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:25:35,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:25:35,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:25:35,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:25:35,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:25:35,765 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 00:25:35,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:25:35,787 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-12 00:25:35,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:25:35,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:25:35,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159571659] [2021-03-12 00:25:35,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:25:35,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-12 00:25:35,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135385697] [2021-03-12 00:25:35,790 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-12 00:25:35,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:25:35,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-12 00:25:35,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-12 00:25:35,791 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-12 00:25:35,792 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1982 places, 7963 transitions, 140907 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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) [2021-03-12 00:25:35,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:25:35,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-12 00:25:35,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:26:06,873 INFO L129 PetriNetUnfolder]: 10665/18412 cut-off events. [2021-03-12 00:26:06,873 INFO L130 PetriNetUnfolder]: For 1048277/1048316 co-relation queries the response was YES. [2021-03-12 00:26:07,786 INFO L84 FinitePrefix]: Finished finitePrefix Result has 197358 conditions, 18412 events. 10665/18412 cut-off events. For 1048277/1048316 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 144369 event pairs, 427 based on Foata normal form. 24/17074 useless extension candidates. Maximal degree in co-relation 196794. Up to 13857 conditions per place. [2021-03-12 00:26:07,899 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 6955 selfloop transitions, 1080 changer transitions 0/8053 dead transitions. [2021-03-12 00:26:07,899 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2021 places, 8053 transitions, 159528 flow [2021-03-12 00:26:07,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-12 00:26:07,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-03-12 00:26:07,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2119 transitions. [2021-03-12 00:26:07,901 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6460365853658536 [2021-03-12 00:26:07,901 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2119 transitions. [2021-03-12 00:26:07,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2119 transitions. [2021-03-12 00:26:07,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:26:07,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2119 transitions. [2021-03-12 00:26:07,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 52.975) internal successors, (2119), 40 states have internal predecessors, (2119), 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) [2021-03-12 00:26:07,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 82.0) internal successors, (3362), 41 states have internal predecessors, (3362), 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) [2021-03-12 00:26:07,904 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 82.0) internal successors, (3362), 41 states have internal predecessors, (3362), 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) [2021-03-12 00:26:07,904 INFO L185 Difference]: Start difference. First operand has 1982 places, 7963 transitions, 140907 flow. Second operand 40 states and 2119 transitions. [2021-03-12 00:26:07,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2021 places, 8053 transitions, 159528 flow [2021-03-12 00:26:40,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2019 places, 8053 transitions, 147619 flow, removed 5883 selfloop flow, removed 2 redundant places. [2021-03-12 00:26:40,178 INFO L241 Difference]: Finished difference. Result has 2025 places, 8002 transitions, 132994 flow [2021-03-12 00:26:40,182 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=128998, PETRI_DIFFERENCE_MINUEND_PLACES=1980, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7963, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1045, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6903, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=132994, PETRI_PLACES=2025, PETRI_TRANSITIONS=8002} [2021-03-12 00:26:40,183 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 1972 predicate places. [2021-03-12 00:26:40,183 INFO L480 AbstractCegarLoop]: Abstraction has has 2025 places, 8002 transitions, 132994 flow [2021-03-12 00:26:40,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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) [2021-03-12 00:26:40,183 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:26:40,183 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:26:40,183 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-12 00:26:40,183 INFO L428 AbstractCegarLoop]: === Iteration 32 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:26:40,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:26:40,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1980988651, now seen corresponding path program 30 times [2021-03-12 00:26:40,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:26:40,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372497622] [2021-03-12 00:26:40,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:26:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:26:40,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:26:40,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:26:40,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:26:40,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:26:40,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:26:40,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:26:40,212 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 00:26:40,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:26:40,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:26:40,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:26:40,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:26:40,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:26:40,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:26:40,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:26:40,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:26:40,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:26:40,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:26:40,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:26:40,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:26:40,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:26:40,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:26:40,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:26:40,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:26:40,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:26:40,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:26:40,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:26:40,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:26:40,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:26:40,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:26:40,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:26:40,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:26:40,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:26:40,384 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 00:26:40,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:26:40,425 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 00:26:40,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:26:40,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:26:40,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372497622] [2021-03-12 00:26:40,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:26:40,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-12 00:26:40,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325575231] [2021-03-12 00:26:40,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-12 00:26:40,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:26:40,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-12 00:26:40,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-12 00:26:40,429 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-12 00:26:40,429 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2025 places, 8002 transitions, 132994 flow. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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) [2021-03-12 00:26:40,430 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:26:40,430 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-12 00:26:40,430 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:27:09,945 INFO L129 PetriNetUnfolder]: 10897/18828 cut-off events. [2021-03-12 00:27:09,945 INFO L130 PetriNetUnfolder]: For 1072037/1072078 co-relation queries the response was YES. [2021-03-12 00:27:10,724 INFO L84 FinitePrefix]: Finished finitePrefix Result has 197720 conditions, 18828 events. 10897/18828 cut-off events. For 1072037/1072078 co-relation queries the response was YES. Maximal size of possible extension queue 963. Compared 148368 event pairs, 415 based on Foata normal form. 26/17471 useless extension candidates. Maximal degree in co-relation 197149. Up to 13838 conditions per place. [2021-03-12 00:27:10,951 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 6612 selfloop transitions, 1692 changer transitions 0/8322 dead transitions. [2021-03-12 00:27:10,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2079 places, 8322 transitions, 159670 flow [2021-03-12 00:27:10,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-03-12 00:27:10,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-03-12 00:27:10,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 2936 transitions. [2021-03-12 00:27:10,954 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6509977827050998 [2021-03-12 00:27:10,954 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 2936 transitions. [2021-03-12 00:27:10,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 2936 transitions. [2021-03-12 00:27:10,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:27:10,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 2936 transitions. [2021-03-12 00:27:10,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 53.38181818181818) internal successors, (2936), 55 states have internal predecessors, (2936), 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) [2021-03-12 00:27:10,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 82.0) internal successors, (4592), 56 states have internal predecessors, (4592), 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) [2021-03-12 00:27:10,957 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 82.0) internal successors, (4592), 56 states have internal predecessors, (4592), 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) [2021-03-12 00:27:10,958 INFO L185 Difference]: Start difference. First operand has 2025 places, 8002 transitions, 132994 flow. Second operand 55 states and 2936 transitions. [2021-03-12 00:27:10,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2079 places, 8322 transitions, 159670 flow [2021-03-12 00:27:39,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2064 places, 8322 transitions, 157668 flow, removed 561 selfloop flow, removed 15 redundant places. [2021-03-12 00:27:39,871 INFO L241 Difference]: Finished difference. Result has 2078 places, 8241 transitions, 143079 flow [2021-03-12 00:27:39,875 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=130992, PETRI_DIFFERENCE_MINUEND_PLACES=2010, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8002, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1484, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=143079, PETRI_PLACES=2078, PETRI_TRANSITIONS=8241} [2021-03-12 00:27:39,875 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 2025 predicate places. [2021-03-12 00:27:39,875 INFO L480 AbstractCegarLoop]: Abstraction has has 2078 places, 8241 transitions, 143079 flow [2021-03-12 00:27:39,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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) [2021-03-12 00:27:39,876 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:27:39,876 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:27:39,876 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-12 00:27:39,876 INFO L428 AbstractCegarLoop]: === Iteration 33 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:27:39,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:27:39,876 INFO L82 PathProgramCache]: Analyzing trace with hash -222492247, now seen corresponding path program 31 times [2021-03-12 00:27:39,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:27:39,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563121043] [2021-03-12 00:27:39,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:27:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:27:39,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:27:39,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:27:39,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:27:39,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:27:39,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:27:39,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:27:39,903 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 00:27:39,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:27:39,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:27:39,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:27:39,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:27:39,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:27:39,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:27:39,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:27:39,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:27:39,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:27:39,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:27:39,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:27:39,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:27:39,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:27:39,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:27:39,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:27:39,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:27:40,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:27:40,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:27:40,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:27:40,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:27:40,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:27:40,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:27:40,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:27:40,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:27:40,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:27:40,055 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 00:27:40,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:27:40,075 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-12 00:27:40,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:27:40,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:27:40,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563121043] [2021-03-12 00:27:40,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:27:40,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-12 00:27:40,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423462106] [2021-03-12 00:27:40,078 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-12 00:27:40,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:27:40,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-12 00:27:40,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-12 00:27:40,079 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-12 00:27:40,080 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2078 places, 8241 transitions, 143079 flow. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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) [2021-03-12 00:27:40,080 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:27:40,080 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-12 00:27:40,080 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:28:10,932 INFO L129 PetriNetUnfolder]: 10938/18926 cut-off events. [2021-03-12 00:28:10,932 INFO L130 PetriNetUnfolder]: For 1124186/1124225 co-relation queries the response was YES. [2021-03-12 00:28:11,748 INFO L84 FinitePrefix]: Finished finitePrefix Result has 202869 conditions, 18926 events. 10938/18926 cut-off events. For 1124186/1124225 co-relation queries the response was YES. Maximal size of possible extension queue 955. Compared 149535 event pairs, 420 based on Foata normal form. 24/17552 useless extension candidates. Maximal degree in co-relation 202273. Up to 14053 conditions per place. [2021-03-12 00:28:11,982 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 6972 selfloop transitions, 1371 changer transitions 0/8361 dead transitions. [2021-03-12 00:28:11,982 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2117 places, 8361 transitions, 163949 flow [2021-03-12 00:28:11,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-12 00:28:11,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-03-12 00:28:11,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2140 transitions. [2021-03-12 00:28:11,984 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6524390243902439 [2021-03-12 00:28:11,984 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2140 transitions. [2021-03-12 00:28:11,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2140 transitions. [2021-03-12 00:28:11,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:28:11,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2140 transitions. [2021-03-12 00:28:11,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 53.5) internal successors, (2140), 40 states have internal predecessors, (2140), 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) [2021-03-12 00:28:11,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 82.0) internal successors, (3362), 41 states have internal predecessors, (3362), 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) [2021-03-12 00:28:11,987 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 82.0) internal successors, (3362), 41 states have internal predecessors, (3362), 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) [2021-03-12 00:28:11,987 INFO L185 Difference]: Start difference. First operand has 2078 places, 8241 transitions, 143079 flow. Second operand 40 states and 2140 transitions. [2021-03-12 00:28:11,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2117 places, 8361 transitions, 163949 flow [2021-03-12 00:28:44,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2099 places, 8361 transitions, 159403 flow, removed 1730 selfloop flow, removed 18 redundant places. [2021-03-12 00:28:44,315 INFO L241 Difference]: Finished difference. Result has 2108 places, 8292 transitions, 143647 flow [2021-03-12 00:28:44,318 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=138533, PETRI_DIFFERENCE_MINUEND_PLACES=2060, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1324, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6908, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=143647, PETRI_PLACES=2108, PETRI_TRANSITIONS=8292} [2021-03-12 00:28:44,318 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 2055 predicate places. [2021-03-12 00:28:44,319 INFO L480 AbstractCegarLoop]: Abstraction has has 2108 places, 8292 transitions, 143647 flow [2021-03-12 00:28:44,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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) [2021-03-12 00:28:44,319 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:28:44,319 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:28:44,319 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-12 00:28:44,319 INFO L428 AbstractCegarLoop]: === Iteration 34 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:28:44,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:28:44,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1886602763, now seen corresponding path program 32 times [2021-03-12 00:28:44,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:28:44,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662800693] [2021-03-12 00:28:44,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:28:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:28:44,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:28:44,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:28:44,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:28:44,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:28:44,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:28:44,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:28:44,352 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 00:28:44,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:28:44,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:28:44,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:28:44,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:28:44,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:28:44,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:28:44,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:28:44,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:28:44,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:28:44,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:28:44,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:28:44,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:28:44,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:28:44,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:28:44,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:28:44,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:28:44,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:28:44,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:28:44,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:28:44,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:28:44,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:28:44,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:28:44,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:28:44,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:28:44,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:28:44,532 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 00:28:44,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:28:44,553 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 00:28:44,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:28:44,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:28:44,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662800693] [2021-03-12 00:28:44,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:28:44,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-12 00:28:44,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340318334] [2021-03-12 00:28:44,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-12 00:28:44,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:28:44,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-12 00:28:44,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-12 00:28:44,556 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-12 00:28:44,557 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2108 places, 8292 transitions, 143647 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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) [2021-03-12 00:28:44,557 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:28:44,557 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-12 00:28:44,557 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:29:18,059 INFO L129 PetriNetUnfolder]: 11085/19190 cut-off events. [2021-03-12 00:29:18,059 INFO L130 PetriNetUnfolder]: For 1176796/1176837 co-relation queries the response was YES. [2021-03-12 00:29:20,455 INFO L84 FinitePrefix]: Finished finitePrefix Result has 207951 conditions, 19190 events. 11085/19190 cut-off events. For 1176796/1176837 co-relation queries the response was YES. Maximal size of possible extension queue 985. Compared 152001 event pairs, 449 based on Foata normal form. 26/17808 useless extension candidates. Maximal degree in co-relation 207345. Up to 14222 conditions per place. [2021-03-12 00:29:20,694 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 7033 selfloop transitions, 1488 changer transitions 0/8539 dead transitions. [2021-03-12 00:29:20,694 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2154 places, 8539 transitions, 168514 flow [2021-03-12 00:29:20,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-03-12 00:29:20,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-03-12 00:29:20,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 2502 transitions. [2021-03-12 00:29:20,696 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6491956408925791 [2021-03-12 00:29:20,696 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 2502 transitions. [2021-03-12 00:29:20,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 2502 transitions. [2021-03-12 00:29:20,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:29:20,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 2502 transitions. [2021-03-12 00:29:20,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 53.234042553191486) internal successors, (2502), 47 states have internal predecessors, (2502), 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) [2021-03-12 00:29:20,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 82.0) internal successors, (3936), 48 states have internal predecessors, (3936), 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) [2021-03-12 00:29:20,699 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 82.0) internal successors, (3936), 48 states have internal predecessors, (3936), 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) [2021-03-12 00:29:20,699 INFO L185 Difference]: Start difference. First operand has 2108 places, 8292 transitions, 143647 flow. Second operand 47 states and 2502 transitions. [2021-03-12 00:29:20,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2154 places, 8539 transitions, 168514 flow [2021-03-12 00:29:51,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2135 places, 8539 transitions, 165553 flow, removed 794 selfloop flow, removed 19 redundant places. [2021-03-12 00:29:51,960 INFO L241 Difference]: Finished difference. Result has 2150 places, 8440 transitions, 149216 flow [2021-03-12 00:29:51,963 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=140703, PETRI_DIFFERENCE_MINUEND_PLACES=2089, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1355, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6892, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=149216, PETRI_PLACES=2150, PETRI_TRANSITIONS=8440} [2021-03-12 00:29:51,963 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 2097 predicate places. [2021-03-12 00:29:51,963 INFO L480 AbstractCegarLoop]: Abstraction has has 2150 places, 8440 transitions, 149216 flow [2021-03-12 00:29:51,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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) [2021-03-12 00:29:51,963 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:29:51,963 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:29:51,964 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-12 00:29:51,964 INFO L428 AbstractCegarLoop]: === Iteration 35 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:29:51,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:29:51,964 INFO L82 PathProgramCache]: Analyzing trace with hash 818328149, now seen corresponding path program 33 times [2021-03-12 00:29:51,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:29:51,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042206005] [2021-03-12 00:29:51,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:29:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:29:51,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:29:51,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:29:51,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:29:51,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:29:51,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:29:51,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:29:52,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:29:52,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:29:52,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:29:52,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:29:52,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:29:52,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:29:52,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:29:52,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:29:52,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:29:52,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:29:52,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:29:52,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:29:52,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:29:52,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:29:52,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:29:52,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:29:52,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:29:52,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:29:52,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:29:52,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:29:52,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:29:52,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:29:52,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:29:52,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:29:52,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:29:52,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:29:52,197 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 00:29:52,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:29:52,222 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 00:29:52,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:29:52,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:29:52,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042206005] [2021-03-12 00:29:52,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:29:52,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-12 00:29:52,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319391535] [2021-03-12 00:29:52,225 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-12 00:29:52,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:29:52,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-12 00:29:52,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-12 00:29:52,226 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-12 00:29:52,227 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2150 places, 8440 transitions, 149216 flow. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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) [2021-03-12 00:29:52,227 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:29:52,227 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-12 00:29:52,227 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:30:29,456 INFO L129 PetriNetUnfolder]: 11634/20069 cut-off events. [2021-03-12 00:30:29,456 INFO L130 PetriNetUnfolder]: For 1355437/1355447 co-relation queries the response was YES. [2021-03-12 00:30:31,681 INFO L84 FinitePrefix]: Finished finitePrefix Result has 229499 conditions, 20069 events. 11634/20069 cut-off events. For 1355437/1355447 co-relation queries the response was YES. Maximal size of possible extension queue 1056. Compared 159525 event pairs, 430 based on Foata normal form. 6/18625 useless extension candidates. Maximal degree in co-relation 228865. Up to 14039 conditions per place. [2021-03-12 00:30:31,828 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 6408 selfloop transitions, 2608 changer transitions 0/9034 dead transitions. [2021-03-12 00:30:31,828 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2203 places, 9034 transitions, 188424 flow [2021-03-12 00:30:31,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-12 00:30:31,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-03-12 00:30:31,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 2852 transitions. [2021-03-12 00:30:31,830 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6440831074977417 [2021-03-12 00:30:31,830 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 2852 transitions. [2021-03-12 00:30:31,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 2852 transitions. [2021-03-12 00:30:31,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:30:31,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 2852 transitions. [2021-03-12 00:30:31,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 52.81481481481482) internal successors, (2852), 54 states have internal predecessors, (2852), 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) [2021-03-12 00:30:31,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 82.0) internal successors, (4510), 55 states have internal predecessors, (4510), 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) [2021-03-12 00:30:31,834 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 82.0) internal successors, (4510), 55 states have internal predecessors, (4510), 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) [2021-03-12 00:30:31,834 INFO L185 Difference]: Start difference. First operand has 2150 places, 8440 transitions, 149216 flow. Second operand 54 states and 2852 transitions. [2021-03-12 00:30:31,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2203 places, 9034 transitions, 188424 flow Received shutdown request... [2021-03-12 00:31:10,612 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-12 00:31:10,612 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-12 00:31:10,620 WARN L224 ceAbstractionStarter]: Timeout [2021-03-12 00:31:10,621 INFO L202 PluginConnector]: Adding new model barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.03 12:31:10 BasicIcfg [2021-03-12 00:31:10,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-12 00:31:10,621 INFO L168 Benchmark]: Toolchain (without parser) took 821907.97 ms. Allocated memory was 255.9 MB in the beginning and 9.0 GB in the end (delta: 8.8 GB). Free memory was 236.8 MB in the beginning and 2.3 GB in the end (delta: -2.1 GB). Peak memory consumption was 7.5 GB. Max. memory is 16.0 GB. [2021-03-12 00:31:10,623 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory was 238.0 MB in the beginning and 238.0 MB in the end (delta: 23.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-12 00:31:10,623 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.29 ms. Allocated memory is still 255.9 MB. Free memory was 236.3 MB in the beginning and 234.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-12 00:31:10,623 INFO L168 Benchmark]: Boogie Preprocessor took 9.93 ms. Allocated memory is still 255.9 MB. Free memory was 234.8 MB in the beginning and 233.8 MB in the end (delta: 984.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-12 00:31:10,623 INFO L168 Benchmark]: RCFGBuilder took 228.06 ms. Allocated memory is still 255.9 MB. Free memory was 233.8 MB in the beginning and 238.4 MB in the end (delta: -4.6 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.0 GB. [2021-03-12 00:31:10,623 INFO L168 Benchmark]: TraceAbstraction took 821645.85 ms. Allocated memory was 255.9 MB in the beginning and 9.0 GB in the end (delta: 8.8 GB). Free memory was 237.7 MB in the beginning and 2.3 GB in the end (delta: -2.1 GB). Peak memory consumption was 7.5 GB. Max. memory is 16.0 GB. [2021-03-12 00:31:10,623 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 0.09 ms. Allocated memory is still 255.9 MB. Free memory was 238.0 MB in the beginning and 238.0 MB in the end (delta: 23.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 18.29 ms. Allocated memory is still 255.9 MB. Free memory was 236.3 MB in the beginning and 234.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 9.93 ms. Allocated memory is still 255.9 MB. Free memory was 234.8 MB in the beginning and 233.8 MB in the end (delta: 984.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 228.06 ms. Allocated memory is still 255.9 MB. Free memory was 233.8 MB in the beginning and 238.4 MB in the end (delta: -4.6 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 821645.85 ms. Allocated memory was 255.9 MB in the beginning and 9.0 GB in the end (delta: 8.8 GB). Free memory was 237.7 MB in the beginning and 2.3 GB in the end (delta: -2.1 GB). Peak memory consumption was 7.5 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 362.7ms, 66 PlacesBefore, 53 PlacesAfterwards, 51 TransitionsBefore, 38 TransitionsAfterwards, 1336 CoEnabledTransitionPairs, 1 FixpointIterations, 1 TrivialSequentialCompositions, 12 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 13 TotalNumberOfCompositions, 2060 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1557, positive: 1511, positive conditional: 0, positive unconditional: 1511, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1017, positive: 982, positive conditional: 0, positive unconditional: 982, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1017, positive: 978, positive conditional: 0, positive unconditional: 978, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 39, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 125, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 112, negative conditional: 0, negative unconditional: 112, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1557, positive: 529, positive conditional: 0, positive unconditional: 529, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 1017, unknown conditional: 0, unknown unconditional: 1017] , Statistics on independence cache: Total cache size (in pairs): 512, Positive cache size: 491, Positive conditional cache size: 0, Positive unconditional cache size: 491, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21 - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 95). Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 14.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 821498.2ms, OverallIterations: 35, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 813080.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 459.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1719 SDtfs, 4218 SDslu, 2254 SDs, 0 SdLazy, 71487 SolverSat, 2987 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23019.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2079 GetRequests, 40 SyntacticMatches, 32 SemanticMatches, 2007 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41954 ImplicationChecksByTransitivity, 41342.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=149216occurred in iteration=34, InterpolantAutomatonStates: 1848, 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: 29.6ms SsaConstructionTime, 200.7ms SatisfiabilityAnalysisTime, 7506.3ms InterpolantComputationTime, 1190 NumberOfCodeBlocks, 1190 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 1155 ConstructedInterpolants, 0 QuantifiedInterpolants, 14631 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 35 InterpolantComputations, 35 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown