/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/test/easy10.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 02:32:44,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 02:32:44,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 02:32:44,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-25 02:32:44,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 02:32:44,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 02:32:44,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 02:32:44,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 02:32:44,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 02:32:44,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 02:32:44,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 02:32:44,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 02:32:44,620 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 02:32:44,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 02:32:44,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 02:32:44,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 02:32:44,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 02:32:44,656 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 [2021-03-25 02:32:44,693 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 02:32:44,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 02:32:44,696 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 02:32:44,697 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 02:32:44,697 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 02:32:44,697 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 02:32:44,697 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 02:32:44,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 02:32:44,697 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 02:32:44,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 02:32:44,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 02:32:44,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 02:32:44,699 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 02:32:44,699 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 02:32:44,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 02:32:44,699 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 02:32:44,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 02:32:44,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 02:32:44,700 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 02:32:44,700 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 02:32:44,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 02:32:44,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 02:32:44,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 02:32:44,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 02:32:44,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 02:32:44,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 02:32:44,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 02:32:44,701 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 02:32:44,701 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 02:32:45,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 02:32:45,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 02:32:45,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 02:32:45,062 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 02:32:45,062 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 02:32:45,063 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl [2021-03-25 02:32:45,063 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl' [2021-03-25 02:32:45,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 02:32:45,390 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 02:32:45,391 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 02:32:45,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 02:32:45,391 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 02:32:45,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 02:32:45" (1/1) ... [2021-03-25 02:32:45,407 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 02:32:45" (1/1) ... [2021-03-25 02:32:45,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 02:32:45,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 02:32:45,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 02:32:45,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 02:32:45,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 02:32:45" (1/1) ... [2021-03-25 02:32:45,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 02:32:45" (1/1) ... [2021-03-25 02:32:45,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 02:32:45" (1/1) ... [2021-03-25 02:32:45,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 02:32:45" (1/1) ... [2021-03-25 02:32:45,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 02:32:45" (1/1) ... [2021-03-25 02:32:45,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 02:32:45" (1/1) ... [2021-03-25 02:32:45,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 02:32:45" (1/1) ... [2021-03-25 02:32:45,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 02:32:45,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 02:32:45,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 02:32:45,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 02:32:45,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 02:32:45" (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 [2021-03-25 02:32:45,500 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-25 02:32:45,501 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 02:32:45,501 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 02:32:45,501 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-25 02:32:45,501 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 02:32:45,501 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 02:32:45,501 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 02:32:45,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 02:32:45,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 02:32:45,502 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-25 02:32:45,502 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-25 02:32:45,502 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-25 02:32:45,502 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-03-25 02:32:45,502 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-03-25 02:32:45,502 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-03-25 02:32:45,504 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 02:32:45,706 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 02:32:45,707 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 02:32:45,708 INFO L202 PluginConnector]: Adding new model easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 02:32:45 BoogieIcfgContainer [2021-03-25 02:32:45,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 02:32:45,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 02:32:45,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 02:32:45,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 02:32:45,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 02:32:45" (1/2) ... [2021-03-25 02:32:45,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52183755 and model type easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 02:32:45, skipping insertion in model container [2021-03-25 02:32:45,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 02:32:45" (2/2) ... [2021-03-25 02:32:45,713 INFO L111 eAbstractionObserver]: Analyzing ICFG easy10.wvr.bpl [2021-03-25 02:32:45,717 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 02:32:45,720 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 02:32:45,721 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 02:32:45,784 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-25 02:32:45,799 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-25 02:32:45,816 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 02:32:45,817 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 02:32:45,817 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 02:32:45,817 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 02:32:45,817 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 02:32:45,817 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 02:32:45,817 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 02:32:45,817 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 02:32:45,842 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 45 transitions, 122 flow [2021-03-25 02:32:45,873 INFO L129 PetriNetUnfolder]: 0/41 cut-off events. [2021-03-25 02:32:45,873 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 02:32:45,881 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 41 events. 0/41 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 02:32:45,881 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 45 transitions, 122 flow [2021-03-25 02:32:45,885 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 39 transitions, 102 flow [2021-03-25 02:32:45,886 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 02:32:45,902 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 52 places, 39 transitions, 102 flow [2021-03-25 02:32:45,909 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 52 places, 39 transitions, 102 flow [2021-03-25 02:32:45,914 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 39 transitions, 102 flow [2021-03-25 02:32:45,946 INFO L129 PetriNetUnfolder]: 0/39 cut-off events. [2021-03-25 02:32:45,947 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 02:32:45,947 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 39 events. 0/39 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 02:32:45,949 INFO L142 LiptonReduction]: Number of co-enabled transitions 756 [2021-03-25 02:32:46,423 INFO L154 LiptonReduction]: Checked pairs total: 936 [2021-03-25 02:32:46,423 INFO L156 LiptonReduction]: Total number of compositions: 13 [2021-03-25 02:32:46,426 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 541 [2021-03-25 02:32:46,453 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2021-03-25 02:32:46,453 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 02:32:46,453 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:32:46,454 INFO L263 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] [2021-03-25 02:32:46,454 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:32:46,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:32:46,461 INFO L82 PathProgramCache]: Analyzing trace with hash 282617581, now seen corresponding path program 1 times [2021-03-25 02:32:46,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:32:46,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067105219] [2021-03-25 02:32:46,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:32:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:32:46,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:46,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-25 02:32:46,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:46,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 02:32:46,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:32:46,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067105219] [2021-03-25 02:32:46,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:32:46,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 02:32:46,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362390715] [2021-03-25 02:32:46,608 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 02:32:46,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:32:46,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 02:32:46,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 02:32:46,622 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 58 [2021-03-25 02:32:46,625 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 26 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-03-25 02:32:46,625 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:32:46,625 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 58 [2021-03-25 02:32:46,626 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:32:46,657 INFO L129 PetriNetUnfolder]: 1/30 cut-off events. [2021-03-25 02:32:46,658 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-25 02:32:46,659 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 30 events. 1/30 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 1 based on Foata normal form. 1/30 useless extension candidates. Maximal degree in co-relation 33. Up to 6 conditions per place. [2021-03-25 02:32:46,660 INFO L132 encePairwiseOnDemand]: 55/58 looper letters, 2 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2021-03-25 02:32:46,661 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 26 transitions, 84 flow [2021-03-25 02:32:46,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 02:32:46,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 02:32:46,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2021-03-25 02:32:46,671 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8908045977011494 [2021-03-25 02:32:46,671 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 155 transitions. [2021-03-25 02:32:46,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 155 transitions. [2021-03-25 02:32:46,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:32:46,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 155 transitions. [2021-03-25 02:32:46,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2021-03-25 02:32:46,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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) [2021-03-25 02:32:46,679 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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) [2021-03-25 02:32:46,681 INFO L185 Difference]: Start difference. First operand has 39 places, 26 transitions, 76 flow. Second operand 3 states and 155 transitions. [2021-03-25 02:32:46,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 26 transitions, 84 flow [2021-03-25 02:32:46,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 26 transitions, 68 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-03-25 02:32:46,685 INFO L241 Difference]: Finished difference. Result has 34 places, 26 transitions, 68 flow [2021-03-25 02:32:46,687 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2021-03-25 02:32:46,687 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2021-03-25 02:32:46,687 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 68 flow [2021-03-25 02:32:46,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-03-25 02:32:46,688 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:32:46,688 INFO L263 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] [2021-03-25 02:32:46,688 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 02:32:46,688 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:32:46,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:32:46,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1092250881, now seen corresponding path program 2 times [2021-03-25 02:32:46,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:32:46,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412545947] [2021-03-25 02:32:46,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:32:46,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:32:46,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:46,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-25 02:32:46,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:46,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 02:32:46,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:32:46,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412545947] [2021-03-25 02:32:46,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:32:46,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 02:32:46,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475027384] [2021-03-25 02:32:46,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 02:32:46,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:32:46,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 02:32:46,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 02:32:46,713 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 58 [2021-03-25 02:32:46,714 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-03-25 02:32:46,714 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:32:46,714 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 58 [2021-03-25 02:32:46,714 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:32:46,726 INFO L129 PetriNetUnfolder]: 1/30 cut-off events. [2021-03-25 02:32:46,726 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 02:32:46,728 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 30 events. 1/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 66 event pairs, 1 based on Foata normal form. 1/31 useless extension candidates. Maximal degree in co-relation 31. Up to 6 conditions per place. [2021-03-25 02:32:46,728 INFO L132 encePairwiseOnDemand]: 55/58 looper letters, 2 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2021-03-25 02:32:46,728 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 26 transitions, 76 flow [2021-03-25 02:32:46,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 02:32:46,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 02:32:46,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2021-03-25 02:32:46,734 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8908045977011494 [2021-03-25 02:32:46,734 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 155 transitions. [2021-03-25 02:32:46,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 155 transitions. [2021-03-25 02:32:46,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:32:46,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 155 transitions. [2021-03-25 02:32:46,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2021-03-25 02:32:46,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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) [2021-03-25 02:32:46,737 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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) [2021-03-25 02:32:46,737 INFO L185 Difference]: Start difference. First operand has 34 places, 26 transitions, 68 flow. Second operand 3 states and 155 transitions. [2021-03-25 02:32:46,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 26 transitions, 76 flow [2021-03-25 02:32:46,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 72 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 02:32:46,739 INFO L241 Difference]: Finished difference. Result has 35 places, 26 transitions, 72 flow [2021-03-25 02:32:46,739 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2021-03-25 02:32:46,740 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, -4 predicate places. [2021-03-25 02:32:46,740 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 72 flow [2021-03-25 02:32:46,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-03-25 02:32:46,740 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:32:46,741 INFO L263 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] [2021-03-25 02:32:46,741 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 02:32:46,741 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:32:46,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:32:46,741 INFO L82 PathProgramCache]: Analyzing trace with hash -727526571, now seen corresponding path program 3 times [2021-03-25 02:32:46,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:32:46,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914756046] [2021-03-25 02:32:46,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:32:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:32:46,870 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:32:46,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:32:46,881 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:32:46,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:32:46,901 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:32:46,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:32:46,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:46,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:32:46,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:46,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:32:46,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:46,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:32:46,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:46,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:32:47,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:47,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:32:47,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:47,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:32:47,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:47,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:32:47,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:47,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:32:47,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:47,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:32:47,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:47,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:32:47,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:47,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:32:47,169 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-25 02:32:47,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 02:32:47,199 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-25 02:32:47,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:32:47,232 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 02:32:47,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:32:47,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:32:47,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914756046] [2021-03-25 02:32:47,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:32:47,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-25 02:32:47,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750513678] [2021-03-25 02:32:47,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-25 02:32:47,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:32:47,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-25 02:32:47,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-25 02:32:47,243 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-25 02:32:47,244 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 72 flow. Second operand has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 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) [2021-03-25 02:32:47,244 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:32:47,244 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-25 02:32:47,244 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:32:48,630 INFO L129 PetriNetUnfolder]: 1079/1646 cut-off events. [2021-03-25 02:32:48,630 INFO L130 PetriNetUnfolder]: For 181/181 co-relation queries the response was YES. [2021-03-25 02:32:48,656 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3685 conditions, 1646 events. 1079/1646 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7234 event pairs, 579 based on Foata normal form. 1/1643 useless extension candidates. Maximal degree in co-relation 3639. Up to 1373 conditions per place. [2021-03-25 02:32:48,665 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 49 selfloop transitions, 75 changer transitions 3/135 dead transitions. [2021-03-25 02:32:48,665 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 135 transitions, 604 flow [2021-03-25 02:32:48,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-25 02:32:48,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-03-25 02:32:48,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 830 transitions. [2021-03-25 02:32:48,669 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5300127713920817 [2021-03-25 02:32:48,669 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 830 transitions. [2021-03-25 02:32:48,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 830 transitions. [2021-03-25 02:32:48,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:32:48,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 830 transitions. [2021-03-25 02:32:48,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 30.74074074074074) internal successors, (830), 27 states have internal predecessors, (830), 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) [2021-03-25 02:32:48,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 58.0) internal successors, (1624), 28 states have internal predecessors, (1624), 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) [2021-03-25 02:32:48,677 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 58.0) internal successors, (1624), 28 states have internal predecessors, (1624), 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) [2021-03-25 02:32:48,677 INFO L185 Difference]: Start difference. First operand has 35 places, 26 transitions, 72 flow. Second operand 27 states and 830 transitions. [2021-03-25 02:32:48,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 135 transitions, 604 flow [2021-03-25 02:32:48,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 135 transitions, 566 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 02:32:48,683 INFO L241 Difference]: Finished difference. Result has 73 places, 100 transitions, 502 flow [2021-03-25 02:32:48,683 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=502, PETRI_PLACES=73, PETRI_TRANSITIONS=100} [2021-03-25 02:32:48,683 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 34 predicate places. [2021-03-25 02:32:48,683 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 100 transitions, 502 flow [2021-03-25 02:32:48,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 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) [2021-03-25 02:32:48,684 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:32:48,684 INFO L263 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] [2021-03-25 02:32:48,684 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 02:32:48,684 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:32:48,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:32:48,685 INFO L82 PathProgramCache]: Analyzing trace with hash -256555925, now seen corresponding path program 4 times [2021-03-25 02:32:48,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:32:48,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901067014] [2021-03-25 02:32:48,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:32:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:32:48,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:48,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-25 02:32:48,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:48,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 02:32:48,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:32:48,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901067014] [2021-03-25 02:32:48,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:32:48,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 02:32:48,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353611968] [2021-03-25 02:32:48,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 02:32:48,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:32:48,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 02:32:48,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 02:32:48,710 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 58 [2021-03-25 02:32:48,710 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 100 transitions, 502 flow. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-03-25 02:32:48,710 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:32:48,710 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 58 [2021-03-25 02:32:48,710 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:32:48,767 INFO L129 PetriNetUnfolder]: 280/563 cut-off events. [2021-03-25 02:32:48,767 INFO L130 PetriNetUnfolder]: For 320/320 co-relation queries the response was YES. [2021-03-25 02:32:48,770 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1550 conditions, 563 events. 280/563 cut-off events. For 320/320 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3039 event pairs, 105 based on Foata normal form. 17/544 useless extension candidates. Maximal degree in co-relation 1529. Up to 399 conditions per place. [2021-03-25 02:32:48,773 INFO L132 encePairwiseOnDemand]: 55/58 looper letters, 6 selfloop transitions, 18 changer transitions 0/98 dead transitions. [2021-03-25 02:32:48,773 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 98 transitions, 542 flow [2021-03-25 02:32:48,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 02:32:48,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 02:32:48,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2021-03-25 02:32:48,777 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8908045977011494 [2021-03-25 02:32:48,777 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 155 transitions. [2021-03-25 02:32:48,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 155 transitions. [2021-03-25 02:32:48,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:32:48,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 155 transitions. [2021-03-25 02:32:48,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2021-03-25 02:32:48,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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) [2021-03-25 02:32:48,784 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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) [2021-03-25 02:32:48,784 INFO L185 Difference]: Start difference. First operand has 73 places, 100 transitions, 502 flow. Second operand 3 states and 155 transitions. [2021-03-25 02:32:48,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 98 transitions, 542 flow [2021-03-25 02:32:48,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 98 transitions, 532 flow, removed 5 selfloop flow, removed 1 redundant places. [2021-03-25 02:32:48,796 INFO L241 Difference]: Finished difference. Result has 72 places, 98 transitions, 542 flow [2021-03-25 02:32:48,796 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=542, PETRI_PLACES=72, PETRI_TRANSITIONS=98} [2021-03-25 02:32:48,796 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 33 predicate places. [2021-03-25 02:32:48,796 INFO L480 AbstractCegarLoop]: Abstraction has has 72 places, 98 transitions, 542 flow [2021-03-25 02:32:48,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-03-25 02:32:48,797 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:32:48,797 INFO L263 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] [2021-03-25 02:32:48,797 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 02:32:48,797 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:32:48,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:32:48,797 INFO L82 PathProgramCache]: Analyzing trace with hash -624127007, now seen corresponding path program 5 times [2021-03-25 02:32:48,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:32:48,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696748524] [2021-03-25 02:32:48,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:32:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:32:48,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:48,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-25 02:32:48,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:48,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 02:32:48,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:32:48,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696748524] [2021-03-25 02:32:48,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:32:48,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 02:32:48,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637738483] [2021-03-25 02:32:48,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 02:32:48,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:32:48,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 02:32:48,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 02:32:48,840 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 58 [2021-03-25 02:32:48,840 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 98 transitions, 542 flow. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-03-25 02:32:48,840 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:32:48,840 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 58 [2021-03-25 02:32:48,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:32:48,878 INFO L129 PetriNetUnfolder]: 196/435 cut-off events. [2021-03-25 02:32:48,878 INFO L130 PetriNetUnfolder]: For 553/553 co-relation queries the response was YES. [2021-03-25 02:32:48,880 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1355 conditions, 435 events. 196/435 cut-off events. For 553/553 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2331 event pairs, 91 based on Foata normal form. 7/418 useless extension candidates. Maximal degree in co-relation 1284. Up to 286 conditions per place. [2021-03-25 02:32:48,882 INFO L132 encePairwiseOnDemand]: 55/58 looper letters, 6 selfloop transitions, 6 changer transitions 0/86 dead transitions. [2021-03-25 02:32:48,883 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 86 transitions, 502 flow [2021-03-25 02:32:48,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 02:32:48,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 02:32:48,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2021-03-25 02:32:48,884 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8908045977011494 [2021-03-25 02:32:48,884 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 155 transitions. [2021-03-25 02:32:48,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 155 transitions. [2021-03-25 02:32:48,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:32:48,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 155 transitions. [2021-03-25 02:32:48,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2021-03-25 02:32:48,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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) [2021-03-25 02:32:48,885 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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) [2021-03-25 02:32:48,885 INFO L185 Difference]: Start difference. First operand has 72 places, 98 transitions, 542 flow. Second operand 3 states and 155 transitions. [2021-03-25 02:32:48,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 86 transitions, 502 flow [2021-03-25 02:32:48,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 86 transitions, 468 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-25 02:32:48,890 INFO L241 Difference]: Finished difference. Result has 70 places, 86 transitions, 464 flow [2021-03-25 02:32:48,890 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=70, PETRI_TRANSITIONS=86} [2021-03-25 02:32:48,890 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 31 predicate places. [2021-03-25 02:32:48,890 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 86 transitions, 464 flow [2021-03-25 02:32:48,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-03-25 02:32:48,891 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:32:48,891 INFO L263 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] [2021-03-25 02:32:48,891 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 02:32:48,891 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:32:48,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:32:48,891 INFO L82 PathProgramCache]: Analyzing trace with hash -988135237, now seen corresponding path program 6 times [2021-03-25 02:32:48,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:32:48,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698985090] [2021-03-25 02:32:48,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:32:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:32:48,978 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:32:48,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:32:48,985 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:32:48,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:32:48,994 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 02:32:48,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 02:32:49,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:49,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:32:49,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:49,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:32:49,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:49,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:32:49,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:49,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:32:49,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:49,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:32:49,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:49,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:32:49,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:49,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:32:49,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:49,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:32:49,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:49,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:32:49,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:49,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:32:49,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:49,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:32:49,214 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 02:32:49,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:32:49,239 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 02:32:49,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:32:49,265 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 02:32:49,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:32:49,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:32:49,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698985090] [2021-03-25 02:32:49,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:32:49,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-25 02:32:49,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585317322] [2021-03-25 02:32:49,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-25 02:32:49,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:32:49,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-25 02:32:49,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-25 02:32:49,271 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-25 02:32:49,272 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 86 transitions, 464 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 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) [2021-03-25 02:32:49,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:32:49,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-25 02:32:49,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:32:51,670 INFO L129 PetriNetUnfolder]: 915/1505 cut-off events. [2021-03-25 02:32:51,671 INFO L130 PetriNetUnfolder]: For 2675/2675 co-relation queries the response was YES. [2021-03-25 02:32:51,674 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5899 conditions, 1505 events. 915/1505 cut-off events. For 2675/2675 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6939 event pairs, 292 based on Foata normal form. 2/1503 useless extension candidates. Maximal degree in co-relation 5795. Up to 1088 conditions per place. [2021-03-25 02:32:51,682 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 134 selfloop transitions, 163 changer transitions 10/315 dead transitions. [2021-03-25 02:32:51,682 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 315 transitions, 2347 flow [2021-03-25 02:32:51,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-25 02:32:51,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-03-25 02:32:51,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 1751 transitions. [2021-03-25 02:32:51,687 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5205112960760999 [2021-03-25 02:32:51,688 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 1751 transitions. [2021-03-25 02:32:51,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 1751 transitions. [2021-03-25 02:32:51,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:32:51,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 1751 transitions. [2021-03-25 02:32:51,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 30.189655172413794) internal successors, (1751), 58 states have internal predecessors, (1751), 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) [2021-03-25 02:32:51,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 58.0) internal successors, (3422), 59 states have internal predecessors, (3422), 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) [2021-03-25 02:32:51,698 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 58.0) internal successors, (3422), 59 states have internal predecessors, (3422), 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) [2021-03-25 02:32:51,698 INFO L185 Difference]: Start difference. First operand has 70 places, 86 transitions, 464 flow. Second operand 58 states and 1751 transitions. [2021-03-25 02:32:51,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 315 transitions, 2347 flow [2021-03-25 02:32:51,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 315 transitions, 2255 flow, removed 16 selfloop flow, removed 3 redundant places. [2021-03-25 02:32:51,712 INFO L241 Difference]: Finished difference. Result has 152 places, 249 transitions, 1898 flow [2021-03-25 02:32:51,712 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=1898, PETRI_PLACES=152, PETRI_TRANSITIONS=249} [2021-03-25 02:32:51,712 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 113 predicate places. [2021-03-25 02:32:51,712 INFO L480 AbstractCegarLoop]: Abstraction has has 152 places, 249 transitions, 1898 flow [2021-03-25 02:32:51,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 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) [2021-03-25 02:32:51,713 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:32:51,713 INFO L263 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] [2021-03-25 02:32:51,713 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 02:32:51,713 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:32:51,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:32:51,714 INFO L82 PathProgramCache]: Analyzing trace with hash -811982509, now seen corresponding path program 7 times [2021-03-25 02:32:51,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:32:51,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641432877] [2021-03-25 02:32:51,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:32:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:32:51,745 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:32:51,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:32:51,751 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:32:51,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:32:51,759 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 02:32:51,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 02:32:51,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:51,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:32:51,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:51,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:32:51,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:51,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:32:51,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:51,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:32:51,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:51,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:32:51,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:51,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:32:51,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:51,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:32:51,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:51,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:32:51,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:51,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:32:51,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:51,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:32:51,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:51,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:32:51,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:51,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:32:52,017 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-25 02:32:52,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:32:52,041 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 02:32:52,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:32:52,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:32:52,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641432877] [2021-03-25 02:32:52,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:32:52,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-25 02:32:52,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938585439] [2021-03-25 02:32:52,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-25 02:32:52,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:32:52,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-25 02:32:52,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-25 02:32:52,048 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-25 02:32:52,049 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 249 transitions, 1898 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 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) [2021-03-25 02:32:52,049 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:32:52,049 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-25 02:32:52,049 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:32:56,361 INFO L129 PetriNetUnfolder]: 1407/2311 cut-off events. [2021-03-25 02:32:56,361 INFO L130 PetriNetUnfolder]: For 21886/21904 co-relation queries the response was YES. [2021-03-25 02:32:56,373 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13601 conditions, 2311 events. 1407/2311 cut-off events. For 21886/21904 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 11550 event pairs, 300 based on Foata normal form. 4/2312 useless extension candidates. Maximal degree in co-relation 13526. Up to 1621 conditions per place. [2021-03-25 02:32:56,391 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 280 selfloop transitions, 377 changer transitions 8/673 dead transitions. [2021-03-25 02:32:56,391 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 673 transitions, 7697 flow [2021-03-25 02:32:56,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-03-25 02:32:56,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2021-03-25 02:32:56,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 2975 transitions. [2021-03-25 02:32:56,401 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5181121560431905 [2021-03-25 02:32:56,401 INFO L72 ComplementDD]: Start complementDD. Operand 99 states and 2975 transitions. [2021-03-25 02:32:56,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 2975 transitions. [2021-03-25 02:32:56,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:32:56,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 99 states and 2975 transitions. [2021-03-25 02:32:56,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 100 states, 99 states have (on average 30.050505050505052) internal successors, (2975), 99 states have internal predecessors, (2975), 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) [2021-03-25 02:32:56,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 100 states, 100 states have (on average 58.0) internal successors, (5800), 100 states have internal predecessors, (5800), 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) [2021-03-25 02:32:56,422 INFO L81 ComplementDD]: Finished complementDD. Result has 100 states, 100 states have (on average 58.0) internal successors, (5800), 100 states have internal predecessors, (5800), 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) [2021-03-25 02:32:56,422 INFO L185 Difference]: Start difference. First operand has 152 places, 249 transitions, 1898 flow. Second operand 99 states and 2975 transitions. [2021-03-25 02:32:56,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 673 transitions, 7697 flow [2021-03-25 02:32:56,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 673 transitions, 7244 flow, removed 207 selfloop flow, removed 3 redundant places. [2021-03-25 02:32:56,503 INFO L241 Difference]: Finished difference. Result has 270 places, 614 transitions, 6683 flow [2021-03-25 02:32:56,504 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=1554, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=6683, PETRI_PLACES=270, PETRI_TRANSITIONS=614} [2021-03-25 02:32:56,504 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 231 predicate places. [2021-03-25 02:32:56,504 INFO L480 AbstractCegarLoop]: Abstraction has has 270 places, 614 transitions, 6683 flow [2021-03-25 02:32:56,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 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) [2021-03-25 02:32:56,504 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:32:56,504 INFO L263 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] [2021-03-25 02:32:56,505 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 02:32:56,505 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:32:56,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:32:56,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1838911491, now seen corresponding path program 8 times [2021-03-25 02:32:56,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:32:56,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067111084] [2021-03-25 02:32:56,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:32:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:32:56,573 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:32:56,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:32:56,579 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:32:56,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:32:56,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:56,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:32:56,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:56,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:32:56,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:56,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:32:56,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:56,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:32:56,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:56,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:32:56,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:56,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:32:56,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:56,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:32:56,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:56,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:32:56,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:56,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:32:56,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:56,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:32:56,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:56,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:32:56,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:56,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:32:56,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:32:56,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:32:56,792 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 02:32:56,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:32:56,817 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 02:32:56,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:32:56,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:32:56,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067111084] [2021-03-25 02:32:56,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:32:56,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-25 02:32:56,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290440331] [2021-03-25 02:32:56,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-25 02:32:56,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:32:56,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-25 02:32:56,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-25 02:32:56,821 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-25 02:32:56,822 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 614 transitions, 6683 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 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) [2021-03-25 02:32:56,822 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:32:56,822 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-25 02:32:56,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:33:00,635 INFO L129 PetriNetUnfolder]: 1936/3158 cut-off events. [2021-03-25 02:33:00,635 INFO L130 PetriNetUnfolder]: For 59495/59515 co-relation queries the response was YES. [2021-03-25 02:33:00,656 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23645 conditions, 3158 events. 1936/3158 cut-off events. For 59495/59515 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 16688 event pairs, 329 based on Foata normal form. 4/3158 useless extension candidates. Maximal degree in co-relation 23530. Up to 2386 conditions per place. [2021-03-25 02:33:00,682 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 602 selfloop transitions, 451 changer transitions 3/1064 dead transitions. [2021-03-25 02:33:00,682 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 1064 transitions, 14882 flow [2021-03-25 02:33:00,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-03-25 02:33:00,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-03-25 02:33:00,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 2584 transitions. [2021-03-25 02:33:00,687 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5303776683087028 [2021-03-25 02:33:00,687 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 2584 transitions. [2021-03-25 02:33:00,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 2584 transitions. [2021-03-25 02:33:00,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:33:00,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 2584 transitions. [2021-03-25 02:33:00,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 30.761904761904763) internal successors, (2584), 84 states have internal predecessors, (2584), 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) [2021-03-25 02:33:00,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 58.0) internal successors, (4930), 85 states have internal predecessors, (4930), 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) [2021-03-25 02:33:00,699 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 58.0) internal successors, (4930), 85 states have internal predecessors, (4930), 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) [2021-03-25 02:33:00,699 INFO L185 Difference]: Start difference. First operand has 270 places, 614 transitions, 6683 flow. Second operand 84 states and 2584 transitions. [2021-03-25 02:33:00,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 1064 transitions, 14882 flow [2021-03-25 02:33:01,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 1064 transitions, 12142 flow, removed 1345 selfloop flow, removed 3 redundant places. [2021-03-25 02:33:01,101 INFO L241 Difference]: Finished difference. Result has 374 places, 1017 transitions, 11074 flow [2021-03-25 02:33:01,102 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=3984, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=11074, PETRI_PLACES=374, PETRI_TRANSITIONS=1017} [2021-03-25 02:33:01,102 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 335 predicate places. [2021-03-25 02:33:01,102 INFO L480 AbstractCegarLoop]: Abstraction has has 374 places, 1017 transitions, 11074 flow [2021-03-25 02:33:01,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 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) [2021-03-25 02:33:01,103 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:33:01,103 INFO L263 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] [2021-03-25 02:33:01,103 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 02:33:01,103 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:33:01,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:33:01,103 INFO L82 PathProgramCache]: Analyzing trace with hash 6870929, now seen corresponding path program 9 times [2021-03-25 02:33:01,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:33:01,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528022261] [2021-03-25 02:33:01,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:33:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:33:01,126 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:33:01,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:33:01,131 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:33:01,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:33:01,139 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 02:33:01,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 02:33:01,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:01,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:01,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:01,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:33:01,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:01,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:33:01,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:01,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:33:01,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:01,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:33:01,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:01,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:33:01,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:01,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:01,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:01,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:01,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:01,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:01,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:01,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:01,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:01,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:01,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:01,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:33:01,320 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-25 02:33:01,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:33:01,341 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 02:33:01,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:01,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:33:01,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528022261] [2021-03-25 02:33:01,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:33:01,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-25 02:33:01,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823708579] [2021-03-25 02:33:01,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-25 02:33:01,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:33:01,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-25 02:33:01,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-25 02:33:01,347 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-25 02:33:01,347 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 1017 transitions, 11074 flow. Second operand has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 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) [2021-03-25 02:33:01,347 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:33:01,347 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-25 02:33:01,347 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:33:04,805 INFO L129 PetriNetUnfolder]: 2383/3883 cut-off events. [2021-03-25 02:33:04,805 INFO L130 PetriNetUnfolder]: For 92250/92272 co-relation queries the response was YES. [2021-03-25 02:33:04,837 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32443 conditions, 3883 events. 2383/3883 cut-off events. For 92250/92272 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21284 event pairs, 310 based on Foata normal form. 3/3885 useless extension candidates. Maximal degree in co-relation 32300. Up to 3091 conditions per place. [2021-03-25 02:33:04,865 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 972 selfloop transitions, 447 changer transitions 9/1436 dead transitions. [2021-03-25 02:33:04,865 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 1436 transitions, 21073 flow [2021-03-25 02:33:04,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-03-25 02:33:04,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-03-25 02:33:04,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 2184 transitions. [2021-03-25 02:33:04,869 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5303545410393394 [2021-03-25 02:33:04,869 INFO L72 ComplementDD]: Start complementDD. Operand 71 states and 2184 transitions. [2021-03-25 02:33:04,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 2184 transitions. [2021-03-25 02:33:04,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:33:04,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 71 states and 2184 transitions. [2021-03-25 02:33:04,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 72 states, 71 states have (on average 30.760563380281692) internal successors, (2184), 71 states have internal predecessors, (2184), 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) [2021-03-25 02:33:04,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 72 states, 72 states have (on average 58.0) internal successors, (4176), 72 states have internal predecessors, (4176), 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) [2021-03-25 02:33:04,878 INFO L81 ComplementDD]: Finished complementDD. Result has 72 states, 72 states have (on average 58.0) internal successors, (4176), 72 states have internal predecessors, (4176), 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) [2021-03-25 02:33:04,878 INFO L185 Difference]: Start difference. First operand has 374 places, 1017 transitions, 11074 flow. Second operand 71 states and 2184 transitions. [2021-03-25 02:33:04,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 1436 transitions, 21073 flow [2021-03-25 02:33:05,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 1436 transitions, 17409 flow, removed 1832 selfloop flow, removed 1 redundant places. [2021-03-25 02:33:05,673 INFO L241 Difference]: Finished difference. Result has 468 places, 1365 transitions, 14721 flow [2021-03-25 02:33:05,674 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=7548, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1017, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=828, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=14721, PETRI_PLACES=468, PETRI_TRANSITIONS=1365} [2021-03-25 02:33:05,674 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 429 predicate places. [2021-03-25 02:33:05,674 INFO L480 AbstractCegarLoop]: Abstraction has has 468 places, 1365 transitions, 14721 flow [2021-03-25 02:33:05,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 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) [2021-03-25 02:33:05,675 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:33:05,675 INFO L263 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] [2021-03-25 02:33:05,675 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 02:33:05,675 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:33:05,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:33:05,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1161489941, now seen corresponding path program 10 times [2021-03-25 02:33:05,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:33:05,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758807442] [2021-03-25 02:33:05,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:33:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:33:05,697 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:33:05,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:33:05,702 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:33:05,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:33:05,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:05,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:05,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:05,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:05,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:05,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:05,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:05,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:33:05,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:05,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:33:05,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:05,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:33:05,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:05,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:33:05,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:05,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:05,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:05,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:05,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:05,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:05,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:05,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:05,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:05,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:05,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:05,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:33:05,889 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 02:33:05,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:33:05,908 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 02:33:05,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:05,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:33:05,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758807442] [2021-03-25 02:33:05,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:33:05,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-25 02:33:05,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095788340] [2021-03-25 02:33:05,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-25 02:33:05,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:33:05,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-25 02:33:05,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-25 02:33:05,913 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-25 02:33:05,914 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 1365 transitions, 14721 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 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) [2021-03-25 02:33:05,914 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:33:05,914 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-25 02:33:05,914 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:33:09,426 INFO L129 PetriNetUnfolder]: 2809/4591 cut-off events. [2021-03-25 02:33:09,426 INFO L130 PetriNetUnfolder]: For 139083/139104 co-relation queries the response was YES. [2021-03-25 02:33:09,460 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40957 conditions, 4591 events. 2809/4591 cut-off events. For 139083/139104 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 26020 event pairs, 372 based on Foata normal form. 4/4595 useless extension candidates. Maximal degree in co-relation 40766. Up to 3778 conditions per place. [2021-03-25 02:33:09,489 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 1251 selfloop transitions, 486 changer transitions 6/1751 dead transitions. [2021-03-25 02:33:09,489 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 1751 transitions, 26220 flow [2021-03-25 02:33:09,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-03-25 02:33:09,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-03-25 02:33:09,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 2057 transitions. [2021-03-25 02:33:09,492 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.529336078229542 [2021-03-25 02:33:09,492 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 2057 transitions. [2021-03-25 02:33:09,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 2057 transitions. [2021-03-25 02:33:09,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:33:09,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 2057 transitions. [2021-03-25 02:33:09,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 30.70149253731343) internal successors, (2057), 67 states have internal predecessors, (2057), 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) [2021-03-25 02:33:09,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 58.0) internal successors, (3944), 68 states have internal predecessors, (3944), 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) [2021-03-25 02:33:09,501 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 58.0) internal successors, (3944), 68 states have internal predecessors, (3944), 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) [2021-03-25 02:33:09,501 INFO L185 Difference]: Start difference. First operand has 468 places, 1365 transitions, 14721 flow. Second operand 67 states and 2057 transitions. [2021-03-25 02:33:09,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 1751 transitions, 26220 flow [2021-03-25 02:33:10,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 1751 transitions, 22063 flow, removed 2065 selfloop flow, removed 3 redundant places. [2021-03-25 02:33:10,663 INFO L241 Difference]: Finished difference. Result has 554 places, 1686 transitions, 19278 flow [2021-03-25 02:33:10,664 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=11286, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=19278, PETRI_PLACES=554, PETRI_TRANSITIONS=1686} [2021-03-25 02:33:10,664 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 515 predicate places. [2021-03-25 02:33:10,664 INFO L480 AbstractCegarLoop]: Abstraction has has 554 places, 1686 transitions, 19278 flow [2021-03-25 02:33:10,665 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 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) [2021-03-25 02:33:10,665 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:33:10,665 INFO L263 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] [2021-03-25 02:33:10,665 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 02:33:10,665 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:33:10,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:33:10,665 INFO L82 PathProgramCache]: Analyzing trace with hash 155791677, now seen corresponding path program 11 times [2021-03-25 02:33:10,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:33:10,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921493894] [2021-03-25 02:33:10,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:33:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:33:10,699 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:33:10,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:33:10,705 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:33:10,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:33:10,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:10,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:10,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:10,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:10,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:10,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:33:10,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:10,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:33:10,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:10,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:33:10,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:10,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:10,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:10,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:10,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:10,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:10,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:10,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:10,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:10,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:10,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:10,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:10,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:10,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:10,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:10,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:33:10,925 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-25 02:33:10,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:33:10,946 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 02:33:10,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:10,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:33:10,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921493894] [2021-03-25 02:33:10,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:33:10,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-25 02:33:10,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421221157] [2021-03-25 02:33:10,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-25 02:33:10,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:33:10,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-25 02:33:10,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-25 02:33:10,950 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-25 02:33:10,951 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 1686 transitions, 19278 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 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) [2021-03-25 02:33:10,951 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:33:10,951 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-25 02:33:10,951 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:33:13,762 INFO L129 PetriNetUnfolder]: 2983/4903 cut-off events. [2021-03-25 02:33:13,762 INFO L130 PetriNetUnfolder]: For 171677/171750 co-relation queries the response was YES. [2021-03-25 02:33:13,910 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45537 conditions, 4903 events. 2983/4903 cut-off events. For 171677/171750 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 28612 event pairs, 374 based on Foata normal form. 6/4908 useless extension candidates. Maximal degree in co-relation 45328. Up to 4238 conditions per place. [2021-03-25 02:33:13,943 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 1607 selfloop transitions, 326 changer transitions 2/1943 dead transitions. [2021-03-25 02:33:13,943 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 1943 transitions, 28857 flow [2021-03-25 02:33:13,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-25 02:33:13,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-03-25 02:33:13,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 1309 transitions. [2021-03-25 02:33:13,946 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.52485966319166 [2021-03-25 02:33:13,946 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 1309 transitions. [2021-03-25 02:33:13,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 1309 transitions. [2021-03-25 02:33:13,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:33:13,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 1309 transitions. [2021-03-25 02:33:13,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 30.441860465116278) internal successors, (1309), 43 states have internal predecessors, (1309), 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) [2021-03-25 02:33:13,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 58.0) internal successors, (2552), 44 states have internal predecessors, (2552), 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) [2021-03-25 02:33:13,951 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 58.0) internal successors, (2552), 44 states have internal predecessors, (2552), 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) [2021-03-25 02:33:13,951 INFO L185 Difference]: Start difference. First operand has 554 places, 1686 transitions, 19278 flow. Second operand 43 states and 1309 transitions. [2021-03-25 02:33:13,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 1943 transitions, 28857 flow [2021-03-25 02:33:15,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 1943 transitions, 24891 flow, removed 1983 selfloop flow, removed 1 redundant places. [2021-03-25 02:33:15,778 INFO L241 Difference]: Finished difference. Result has 606 places, 1893 transitions, 21515 flow [2021-03-25 02:33:15,779 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=15366, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1686, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=21515, PETRI_PLACES=606, PETRI_TRANSITIONS=1893} [2021-03-25 02:33:15,780 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 567 predicate places. [2021-03-25 02:33:15,780 INFO L480 AbstractCegarLoop]: Abstraction has has 606 places, 1893 transitions, 21515 flow [2021-03-25 02:33:15,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 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) [2021-03-25 02:33:15,780 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:33:15,780 INFO L263 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] [2021-03-25 02:33:15,780 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-25 02:33:15,780 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:33:15,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:33:15,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1079846605, now seen corresponding path program 12 times [2021-03-25 02:33:15,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:33:15,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736252583] [2021-03-25 02:33:15,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:33:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:33:15,800 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:33:15,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:33:15,808 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:33:15,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:33:15,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:15,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:15,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:15,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:15,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:15,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:15,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:15,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:33:15,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:15,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:33:15,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:15,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:33:15,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:15,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:15,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:15,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:15,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:15,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:15,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:15,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:15,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:15,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:15,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:15,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:16,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:16,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:33:16,042 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 02:33:16,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:33:16,072 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 02:33:16,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:16,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:33:16,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736252583] [2021-03-25 02:33:16,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:33:16,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-25 02:33:16,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567154595] [2021-03-25 02:33:16,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-25 02:33:16,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:33:16,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-25 02:33:16,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-25 02:33:16,081 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-25 02:33:16,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 1893 transitions, 21515 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 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) [2021-03-25 02:33:16,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:33:16,081 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-25 02:33:16,081 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:33:20,344 INFO L129 PetriNetUnfolder]: 3345/5495 cut-off events. [2021-03-25 02:33:20,344 INFO L130 PetriNetUnfolder]: For 199159/199250 co-relation queries the response was YES. [2021-03-25 02:33:20,406 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53009 conditions, 5495 events. 3345/5495 cut-off events. For 199159/199250 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 32806 event pairs, 354 based on Foata normal form. 22/5516 useless extension candidates. Maximal degree in co-relation 52779. Up to 4535 conditions per place. [2021-03-25 02:33:20,440 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 1598 selfloop transitions, 699 changer transitions 2/2307 dead transitions. [2021-03-25 02:33:20,440 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 675 places, 2307 transitions, 37242 flow [2021-03-25 02:33:20,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-03-25 02:33:20,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2021-03-25 02:33:20,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 2197 transitions. [2021-03-25 02:33:20,443 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5261015325670498 [2021-03-25 02:33:20,443 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 2197 transitions. [2021-03-25 02:33:20,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 2197 transitions. [2021-03-25 02:33:20,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:33:20,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 2197 transitions. [2021-03-25 02:33:20,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 30.51388888888889) internal successors, (2197), 72 states have internal predecessors, (2197), 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) [2021-03-25 02:33:20,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 58.0) internal successors, (4234), 73 states have internal predecessors, (4234), 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) [2021-03-25 02:33:20,452 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 58.0) internal successors, (4234), 73 states have internal predecessors, (4234), 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) [2021-03-25 02:33:20,452 INFO L185 Difference]: Start difference. First operand has 606 places, 1893 transitions, 21515 flow. Second operand 72 states and 2197 transitions. [2021-03-25 02:33:20,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 675 places, 2307 transitions, 37242 flow [2021-03-25 02:33:23,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 674 places, 2307 transitions, 33506 flow, removed 1868 selfloop flow, removed 1 redundant places. [2021-03-25 02:33:23,279 INFO L241 Difference]: Finished difference. Result has 711 places, 2248 transitions, 29903 flow [2021-03-25 02:33:23,281 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=18879, PETRI_DIFFERENCE_MINUEND_PLACES=603, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1893, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=401, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=29903, PETRI_PLACES=711, PETRI_TRANSITIONS=2248} [2021-03-25 02:33:23,281 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 672 predicate places. [2021-03-25 02:33:23,281 INFO L480 AbstractCegarLoop]: Abstraction has has 711 places, 2248 transitions, 29903 flow [2021-03-25 02:33:23,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 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) [2021-03-25 02:33:23,281 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:33:23,281 INFO L263 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] [2021-03-25 02:33:23,281 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-25 02:33:23,281 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:33:23,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:33:23,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1920274725, now seen corresponding path program 13 times [2021-03-25 02:33:23,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:33:23,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083974221] [2021-03-25 02:33:23,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:33:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:33:23,301 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:33:23,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:33:23,305 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:33:23,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:33:23,313 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:33:23,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:33:23,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:23,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:23,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:23,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:23,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:23,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:23,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:23,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:23,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:23,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:23,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:23,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:23,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:23,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:23,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:23,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:23,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:23,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:23,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:23,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:23,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:23,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:23,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:23,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:33:23,511 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 02:33:23,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:33:23,532 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 02:33:23,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:23,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:33:23,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083974221] [2021-03-25 02:33:23,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:33:23,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-25 02:33:23,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487519845] [2021-03-25 02:33:23,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-25 02:33:23,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:33:23,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-25 02:33:23,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-25 02:33:23,536 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-25 02:33:23,536 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 711 places, 2248 transitions, 29903 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 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) [2021-03-25 02:33:23,536 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:33:23,536 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-25 02:33:23,536 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:33:28,010 INFO L129 PetriNetUnfolder]: 3521/5801 cut-off events. [2021-03-25 02:33:28,010 INFO L130 PetriNetUnfolder]: For 264342/264436 co-relation queries the response was YES. [2021-03-25 02:33:28,079 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60254 conditions, 5801 events. 3521/5801 cut-off events. For 264342/264436 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 35085 event pairs, 386 based on Foata normal form. 16/5816 useless extension candidates. Maximal degree in co-relation 59984. Up to 5102 conditions per place. [2021-03-25 02:33:28,107 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 1943 selfloop transitions, 500 changer transitions 4/2455 dead transitions. [2021-03-25 02:33:28,107 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 764 places, 2455 transitions, 40959 flow [2021-03-25 02:33:28,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-25 02:33:28,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-03-25 02:33:28,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 1666 transitions. [2021-03-25 02:33:28,114 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5129310344827587 [2021-03-25 02:33:28,114 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 1666 transitions. [2021-03-25 02:33:28,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 1666 transitions. [2021-03-25 02:33:28,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:33:28,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 1666 transitions. [2021-03-25 02:33:28,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 29.75) internal successors, (1666), 56 states have internal predecessors, (1666), 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) [2021-03-25 02:33:28,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 58.0) internal successors, (3306), 57 states have internal predecessors, (3306), 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) [2021-03-25 02:33:28,121 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 58.0) internal successors, (3306), 57 states have internal predecessors, (3306), 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) [2021-03-25 02:33:28,121 INFO L185 Difference]: Start difference. First operand has 711 places, 2248 transitions, 29903 flow. Second operand 56 states and 1666 transitions. [2021-03-25 02:33:28,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 764 places, 2455 transitions, 40959 flow [2021-03-25 02:33:31,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 762 places, 2455 transitions, 35185 flow, removed 2887 selfloop flow, removed 2 redundant places. [2021-03-25 02:33:31,852 INFO L241 Difference]: Finished difference. Result has 773 places, 2442 transitions, 31339 flow [2021-03-25 02:33:31,854 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=24355, PETRI_DIFFERENCE_MINUEND_PLACES=707, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=337, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1881, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=31339, PETRI_PLACES=773, PETRI_TRANSITIONS=2442} [2021-03-25 02:33:31,854 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 734 predicate places. [2021-03-25 02:33:31,854 INFO L480 AbstractCegarLoop]: Abstraction has has 773 places, 2442 transitions, 31339 flow [2021-03-25 02:33:31,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 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) [2021-03-25 02:33:31,854 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:33:31,854 INFO L263 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] [2021-03-25 02:33:31,855 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-25 02:33:31,855 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:33:31,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:33:31,855 INFO L82 PathProgramCache]: Analyzing trace with hash 384858735, now seen corresponding path program 14 times [2021-03-25 02:33:31,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:33:31,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858756013] [2021-03-25 02:33:31,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:33:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:33:31,873 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:33:31,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:33:31,878 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:33:31,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:33:31,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:31,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:31,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:31,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:31,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:31,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:31,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:31,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:31,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:31,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:31,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:31,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:31,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:31,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:31,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:31,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:32,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:32,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:32,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:32,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:32,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:32,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:32,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:32,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:32,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:32,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:33:32,130 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 02:33:32,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:33:32,157 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 02:33:32,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:32,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:33:32,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858756013] [2021-03-25 02:33:32,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:33:32,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-25 02:33:32,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788377136] [2021-03-25 02:33:32,160 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-25 02:33:32,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:33:32,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-25 02:33:32,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-25 02:33:32,161 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-25 02:33:32,162 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 773 places, 2442 transitions, 31339 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 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) [2021-03-25 02:33:32,162 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:33:32,162 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-25 02:33:32,162 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:33:36,372 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2021-03-25 02:33:36,526 INFO L129 PetriNetUnfolder]: 3838/6297 cut-off events. [2021-03-25 02:33:36,526 INFO L130 PetriNetUnfolder]: For 275146/275240 co-relation queries the response was YES. [2021-03-25 02:33:36,610 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63536 conditions, 6297 events. 3838/6297 cut-off events. For 275146/275240 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 38393 event pairs, 281 based on Foata normal form. 22/6318 useless extension candidates. Maximal degree in co-relation 63250. Up to 5282 conditions per place. [2021-03-25 02:33:36,641 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 1972 selfloop transitions, 813 changer transitions 2/2795 dead transitions. [2021-03-25 02:33:36,642 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 816 places, 2795 transitions, 44611 flow [2021-03-25 02:33:36,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-03-25 02:33:36,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-03-25 02:33:36,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 1429 transitions. [2021-03-25 02:33:36,644 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5242112986060161 [2021-03-25 02:33:36,644 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 1429 transitions. [2021-03-25 02:33:36,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 1429 transitions. [2021-03-25 02:33:36,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:33:36,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 1429 transitions. [2021-03-25 02:33:36,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 30.404255319148938) internal successors, (1429), 47 states have internal predecessors, (1429), 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) [2021-03-25 02:33:36,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 58.0) internal successors, (2784), 48 states have internal predecessors, (2784), 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) [2021-03-25 02:33:36,648 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 58.0) internal successors, (2784), 48 states have internal predecessors, (2784), 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) [2021-03-25 02:33:36,648 INFO L185 Difference]: Start difference. First operand has 773 places, 2442 transitions, 31339 flow. Second operand 47 states and 1429 transitions. [2021-03-25 02:33:36,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 816 places, 2795 transitions, 44611 flow [2021-03-25 02:33:41,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 812 places, 2795 transitions, 39446 flow, removed 2469 selfloop flow, removed 4 redundant places. [2021-03-25 02:33:41,088 INFO L241 Difference]: Finished difference. Result has 828 places, 2735 transitions, 34813 flow [2021-03-25 02:33:41,090 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=26205, PETRI_DIFFERENCE_MINUEND_PLACES=766, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=569, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1824, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=34813, PETRI_PLACES=828, PETRI_TRANSITIONS=2735} [2021-03-25 02:33:41,091 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 789 predicate places. [2021-03-25 02:33:41,091 INFO L480 AbstractCegarLoop]: Abstraction has has 828 places, 2735 transitions, 34813 flow [2021-03-25 02:33:41,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 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) [2021-03-25 02:33:41,091 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:33:41,091 INFO L263 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] [2021-03-25 02:33:41,091 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-25 02:33:41,091 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:33:41,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:33:41,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1898461905, now seen corresponding path program 15 times [2021-03-25 02:33:41,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:33:41,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433224039] [2021-03-25 02:33:41,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:33:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:33:41,110 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:33:41,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:33:41,116 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:33:41,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:33:41,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:41,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:41,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:41,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:41,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:41,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:41,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:41,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:41,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:41,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:41,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:41,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:41,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:41,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:41,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:41,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:41,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:41,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:41,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:41,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:41,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:41,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:41,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:41,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:41,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:41,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:33:41,369 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 02:33:41,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:33:41,390 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 02:33:41,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:41,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:33:41,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433224039] [2021-03-25 02:33:41,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:33:41,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-25 02:33:41,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013792943] [2021-03-25 02:33:41,393 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-25 02:33:41,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:33:41,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-25 02:33:41,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-25 02:33:41,395 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-25 02:33:41,396 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 828 places, 2735 transitions, 34813 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 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) [2021-03-25 02:33:41,396 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:33:41,396 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-25 02:33:41,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:33:42,956 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2021-03-25 02:33:45,995 INFO L129 PetriNetUnfolder]: 3960/6546 cut-off events. [2021-03-25 02:33:45,995 INFO L130 PetriNetUnfolder]: For 290373/290455 co-relation queries the response was YES. [2021-03-25 02:33:46,086 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66665 conditions, 6546 events. 3960/6546 cut-off events. For 290373/290455 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 40798 event pairs, 355 based on Foata normal form. 18/6563 useless extension candidates. Maximal degree in co-relation 66361. Up to 5414 conditions per place. [2021-03-25 02:33:46,118 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 1963 selfloop transitions, 948 changer transitions 3/2922 dead transitions. [2021-03-25 02:33:46,118 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 872 places, 2922 transitions, 46130 flow [2021-03-25 02:33:46,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-03-25 02:33:46,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-03-25 02:33:46,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 1400 transitions. [2021-03-25 02:33:46,120 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5135730007336757 [2021-03-25 02:33:46,120 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 1400 transitions. [2021-03-25 02:33:46,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 1400 transitions. [2021-03-25 02:33:46,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:33:46,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 1400 transitions. [2021-03-25 02:33:46,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 29.78723404255319) internal successors, (1400), 47 states have internal predecessors, (1400), 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) [2021-03-25 02:33:46,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 58.0) internal successors, (2784), 48 states have internal predecessors, (2784), 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) [2021-03-25 02:33:46,126 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 58.0) internal successors, (2784), 48 states have internal predecessors, (2784), 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) [2021-03-25 02:33:46,126 INFO L185 Difference]: Start difference. First operand has 828 places, 2735 transitions, 34813 flow. Second operand 47 states and 1400 transitions. [2021-03-25 02:33:46,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 872 places, 2922 transitions, 46130 flow [2021-03-25 02:33:50,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 867 places, 2922 transitions, 41620 flow, removed 2103 selfloop flow, removed 5 redundant places. [2021-03-25 02:33:50,754 INFO L241 Difference]: Finished difference. Result has 882 places, 2884 transitions, 37016 flow [2021-03-25 02:33:50,756 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=31093, PETRI_DIFFERENCE_MINUEND_PLACES=821, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=817, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1889, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=37016, PETRI_PLACES=882, PETRI_TRANSITIONS=2884} [2021-03-25 02:33:50,756 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 843 predicate places. [2021-03-25 02:33:50,757 INFO L480 AbstractCegarLoop]: Abstraction has has 882 places, 2884 transitions, 37016 flow [2021-03-25 02:33:50,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 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) [2021-03-25 02:33:50,757 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:33:50,757 INFO L263 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] [2021-03-25 02:33:50,757 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-25 02:33:50,757 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:33:50,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:33:50,757 INFO L82 PathProgramCache]: Analyzing trace with hash -761831559, now seen corresponding path program 16 times [2021-03-25 02:33:50,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:33:50,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637529514] [2021-03-25 02:33:50,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:33:50,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:33:50,774 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:33:50,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:33:50,779 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:33:50,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:33:50,786 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:33:50,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:33:50,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:50,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:50,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:50,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:50,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:50,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:50,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:50,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:50,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:50,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:33:50,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:50,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:50,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:50,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:50,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:50,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:33:50,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:50,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:50,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:50,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:50,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:50,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:33:50,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:33:50,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:33:50,992 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 02:33:50,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:33:51,013 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 02:33:51,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:33:51,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:33:51,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637529514] [2021-03-25 02:33:51,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:33:51,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-25 02:33:51,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108328259] [2021-03-25 02:33:51,016 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-25 02:33:51,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:33:51,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-25 02:33:51,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-25 02:33:51,017 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-25 02:33:51,017 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 882 places, 2884 transitions, 37016 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 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) [2021-03-25 02:33:51,017 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:33:51,017 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-25 02:33:51,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:33:56,328 INFO L129 PetriNetUnfolder]: 4203/6945 cut-off events. [2021-03-25 02:33:56,328 INFO L130 PetriNetUnfolder]: For 345446/345528 co-relation queries the response was YES. [2021-03-25 02:33:56,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74313 conditions, 6945 events. 4203/6945 cut-off events. For 345446/345528 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 43583 event pairs, 291 based on Foata normal form. 13/6957 useless extension candidates. Maximal degree in co-relation 73989. Up to 6088 conditions per place. [2021-03-25 02:33:56,464 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 2579 selfloop transitions, 512 changer transitions 3/3102 dead transitions. [2021-03-25 02:33:56,465 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 936 places, 3102 transitions, 51531 flow [2021-03-25 02:33:56,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-03-25 02:33:56,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-03-25 02:33:56,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 1719 transitions. [2021-03-25 02:33:56,467 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5199637023593466 [2021-03-25 02:33:56,467 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 1719 transitions. [2021-03-25 02:33:56,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 1719 transitions. [2021-03-25 02:33:56,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:33:56,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 1719 transitions. [2021-03-25 02:33:56,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 30.157894736842106) internal successors, (1719), 57 states have internal predecessors, (1719), 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) [2021-03-25 02:33:56,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 58.0) internal successors, (3364), 58 states have internal predecessors, (3364), 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) [2021-03-25 02:33:56,473 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 58.0) internal successors, (3364), 58 states have internal predecessors, (3364), 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) [2021-03-25 02:33:56,473 INFO L185 Difference]: Start difference. First operand has 882 places, 2884 transitions, 37016 flow. Second operand 57 states and 1719 transitions. [2021-03-25 02:33:56,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 936 places, 3102 transitions, 51531 flow [2021-03-25 02:34:01,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 931 places, 3102 transitions, 48549 flow, removed 1321 selfloop flow, removed 5 redundant places. [2021-03-25 02:34:01,907 INFO L241 Difference]: Finished difference. Result has 946 places, 3082 transitions, 43040 flow [2021-03-25 02:34:01,909 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=34048, PETRI_DIFFERENCE_MINUEND_PLACES=875, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2884, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=347, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=43040, PETRI_PLACES=946, PETRI_TRANSITIONS=3082} [2021-03-25 02:34:01,909 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 907 predicate places. [2021-03-25 02:34:01,909 INFO L480 AbstractCegarLoop]: Abstraction has has 946 places, 3082 transitions, 43040 flow [2021-03-25 02:34:01,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 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) [2021-03-25 02:34:01,910 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:34:01,910 INFO L263 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] [2021-03-25 02:34:01,910 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-25 02:34:01,910 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:34:01,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:34:01,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1656526359, now seen corresponding path program 17 times [2021-03-25 02:34:01,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:34:01,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97069369] [2021-03-25 02:34:01,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:34:01,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:34:01,927 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:34:01,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:34:01,933 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:34:01,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:34:01,941 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:34:01,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:34:01,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:01,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:34:01,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:01,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:34:01,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:01,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:34:01,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:01,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:34:02,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:02,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:34:02,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:02,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:34:02,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:02,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:34:02,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:02,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:34:02,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:02,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:34:02,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:02,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:34:02,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:02,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:34:02,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:02,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:34:02,192 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 02:34:02,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:34:02,217 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 02:34:02,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:34:02,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:34:02,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97069369] [2021-03-25 02:34:02,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:34:02,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-25 02:34:02,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712606677] [2021-03-25 02:34:02,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-25 02:34:02,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:34:02,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-25 02:34:02,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-25 02:34:02,222 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-25 02:34:02,222 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 946 places, 3082 transitions, 43040 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 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) [2021-03-25 02:34:02,222 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:34:02,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-25 02:34:02,222 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:34:08,336 INFO L129 PetriNetUnfolder]: 4766/7853 cut-off events. [2021-03-25 02:34:08,336 INFO L130 PetriNetUnfolder]: For 425550/425632 co-relation queries the response was YES. [2021-03-25 02:34:08,461 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87562 conditions, 7853 events. 4766/7853 cut-off events. For 425550/425632 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 50504 event pairs, 393 based on Foata normal form. 13/7865 useless extension candidates. Maximal degree in co-relation 87220. Up to 6642 conditions per place. [2021-03-25 02:34:08,505 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 2777 selfloop transitions, 871 changer transitions 3/3659 dead transitions. [2021-03-25 02:34:08,505 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1001 places, 3659 transitions, 64220 flow [2021-03-25 02:34:08,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-25 02:34:08,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-03-25 02:34:08,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 1758 transitions. [2021-03-25 02:34:08,508 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5225921521997622 [2021-03-25 02:34:08,508 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 1758 transitions. [2021-03-25 02:34:08,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 1758 transitions. [2021-03-25 02:34:08,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:34:08,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 1758 transitions. [2021-03-25 02:34:08,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 30.310344827586206) internal successors, (1758), 58 states have internal predecessors, (1758), 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) [2021-03-25 02:34:08,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 58.0) internal successors, (3422), 59 states have internal predecessors, (3422), 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) [2021-03-25 02:34:08,513 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 58.0) internal successors, (3422), 59 states have internal predecessors, (3422), 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) [2021-03-25 02:34:08,514 INFO L185 Difference]: Start difference. First operand has 946 places, 3082 transitions, 43040 flow. Second operand 58 states and 1758 transitions. [2021-03-25 02:34:08,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1001 places, 3659 transitions, 64220 flow [2021-03-25 02:34:16,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 998 places, 3659 transitions, 57514 flow, removed 3194 selfloop flow, removed 3 redundant places. [2021-03-25 02:34:16,785 INFO L241 Difference]: Finished difference. Result has 1025 places, 3559 transitions, 50722 flow [2021-03-25 02:34:16,787 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=36403, PETRI_DIFFERENCE_MINUEND_PLACES=941, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3082, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=472, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=50722, PETRI_PLACES=1025, PETRI_TRANSITIONS=3559} [2021-03-25 02:34:16,788 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 986 predicate places. [2021-03-25 02:34:16,788 INFO L480 AbstractCegarLoop]: Abstraction has has 1025 places, 3559 transitions, 50722 flow [2021-03-25 02:34:16,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 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) [2021-03-25 02:34:16,788 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:34:16,788 INFO L263 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] [2021-03-25 02:34:16,788 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-25 02:34:16,788 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:34:16,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:34:16,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1281597005, now seen corresponding path program 18 times [2021-03-25 02:34:16,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:34:16,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520417355] [2021-03-25 02:34:16,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:34:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:34:16,805 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:34:16,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:34:16,810 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:34:16,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:34:16,818 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:34:16,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:34:16,827 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 02:34:16,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 02:34:16,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:16,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:34:16,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:16,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:34:16,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:16,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:34:16,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:16,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:34:16,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:16,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:34:16,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:16,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:34:16,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:16,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:34:16,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:16,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:34:16,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:16,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:34:16,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:16,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:34:17,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:17,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:34:17,032 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 02:34:17,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:34:17,055 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 02:34:17,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:34:17,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:34:17,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520417355] [2021-03-25 02:34:17,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:34:17,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-25 02:34:17,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062032337] [2021-03-25 02:34:17,058 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-25 02:34:17,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:34:17,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-25 02:34:17,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-25 02:34:17,059 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-25 02:34:17,059 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1025 places, 3559 transitions, 50722 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 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) [2021-03-25 02:34:17,059 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:34:17,059 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-25 02:34:17,059 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:34:19,894 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2021-03-25 02:34:23,601 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2021-03-25 02:34:24,567 INFO L129 PetriNetUnfolder]: 5093/8401 cut-off events. [2021-03-25 02:34:24,567 INFO L130 PetriNetUnfolder]: For 530815/530897 co-relation queries the response was YES. [2021-03-25 02:34:24,726 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98844 conditions, 8401 events. 5093/8401 cut-off events. For 530815/530897 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 54771 event pairs, 293 based on Foata normal form. 13/8413 useless extension candidates. Maximal degree in co-relation 98469. Up to 7282 conditions per place. [2021-03-25 02:34:24,776 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 3190 selfloop transitions, 637 changer transitions 4/3839 dead transitions. [2021-03-25 02:34:24,777 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1082 places, 3839 transitions, 70349 flow [2021-03-25 02:34:24,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-25 02:34:24,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-03-25 02:34:24,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 1850 transitions. [2021-03-25 02:34:24,779 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5316091954022989 [2021-03-25 02:34:24,779 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 1850 transitions. [2021-03-25 02:34:24,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 1850 transitions. [2021-03-25 02:34:24,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:34:24,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 1850 transitions. [2021-03-25 02:34:24,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 30.833333333333332) internal successors, (1850), 60 states have internal predecessors, (1850), 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) [2021-03-25 02:34:24,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 58.0) internal successors, (3538), 61 states have internal predecessors, (3538), 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) [2021-03-25 02:34:24,785 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 58.0) internal successors, (3538), 61 states have internal predecessors, (3538), 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) [2021-03-25 02:34:24,785 INFO L185 Difference]: Start difference. First operand has 1025 places, 3559 transitions, 50722 flow. Second operand 60 states and 1850 transitions. [2021-03-25 02:34:24,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1082 places, 3839 transitions, 70349 flow [2021-03-25 02:34:35,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1080 places, 3839 transitions, 64421 flow, removed 2900 selfloop flow, removed 2 redundant places. [2021-03-25 02:34:35,281 INFO L241 Difference]: Finished difference. Result has 1095 places, 3791 transitions, 56413 flow [2021-03-25 02:34:35,284 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=44816, PETRI_DIFFERENCE_MINUEND_PLACES=1021, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=447, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3086, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=56413, PETRI_PLACES=1095, PETRI_TRANSITIONS=3791} [2021-03-25 02:34:35,285 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 1056 predicate places. [2021-03-25 02:34:35,285 INFO L480 AbstractCegarLoop]: Abstraction has has 1095 places, 3791 transitions, 56413 flow [2021-03-25 02:34:35,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 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) [2021-03-25 02:34:35,285 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:34:35,285 INFO L263 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] [2021-03-25 02:34:35,285 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-25 02:34:35,285 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:34:35,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:34:35,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1612500817, now seen corresponding path program 19 times [2021-03-25 02:34:35,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:34:35,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476068617] [2021-03-25 02:34:35,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:34:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:34:35,302 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:34:35,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:34:35,307 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:34:35,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:34:35,314 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:34:35,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:34:35,325 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 02:34:35,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 02:34:35,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:35,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:34:35,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:35,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:34:35,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:35,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:34:35,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:35,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:34:35,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:35,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:34:35,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:35,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:34:35,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:35,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:34:35,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:35,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:34:35,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:35,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:34:35,483 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-25 02:34:35,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 02:34:35,513 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-25 02:34:35,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:34:35,534 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-25 02:34:35,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:34:35,555 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 02:34:35,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:34:35,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:34:35,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476068617] [2021-03-25 02:34:35,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:34:35,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-25 02:34:35,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809446102] [2021-03-25 02:34:35,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-25 02:34:35,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:34:35,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-25 02:34:35,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-25 02:34:35,559 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-25 02:34:35,559 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1095 places, 3791 transitions, 56413 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 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) [2021-03-25 02:34:35,559 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:34:35,559 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-25 02:34:35,560 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:34:42,900 INFO L129 PetriNetUnfolder]: 5415/8894 cut-off events. [2021-03-25 02:34:42,900 INFO L130 PetriNetUnfolder]: For 603090/603172 co-relation queries the response was YES. [2021-03-25 02:34:43,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 105433 conditions, 8894 events. 5415/8894 cut-off events. For 603090/603172 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 58132 event pairs, 341 based on Foata normal form. 13/8906 useless extension candidates. Maximal degree in co-relation 105040. Up to 7670 conditions per place. [2021-03-25 02:34:43,215 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 3347 selfloop transitions, 844 changer transitions 4/4203 dead transitions. [2021-03-25 02:34:43,215 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1131 places, 4203 transitions, 73954 flow [2021-03-25 02:34:43,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-25 02:34:43,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-03-25 02:34:43,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1185 transitions. [2021-03-25 02:34:43,220 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5238726790450928 [2021-03-25 02:34:43,221 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 1185 transitions. [2021-03-25 02:34:43,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 1185 transitions. [2021-03-25 02:34:43,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:34:43,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 1185 transitions. [2021-03-25 02:34:43,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 30.384615384615383) internal successors, (1185), 39 states have internal predecessors, (1185), 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) [2021-03-25 02:34:43,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 58.0) internal successors, (2320), 40 states have internal predecessors, (2320), 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) [2021-03-25 02:34:43,225 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 58.0) internal successors, (2320), 40 states have internal predecessors, (2320), 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) [2021-03-25 02:34:43,225 INFO L185 Difference]: Start difference. First operand has 1095 places, 3791 transitions, 56413 flow. Second operand 39 states and 1185 transitions. [2021-03-25 02:34:43,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1131 places, 4203 transitions, 73954 flow [2021-03-25 02:34:55,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1125 places, 4203 transitions, 65437 flow, removed 4042 selfloop flow, removed 6 redundant places. [2021-03-25 02:34:55,568 INFO L241 Difference]: Finished difference. Result has 1136 places, 4083 transitions, 57281 flow [2021-03-25 02:34:55,571 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=48732, PETRI_DIFFERENCE_MINUEND_PLACES=1087, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3791, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=579, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3051, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=57281, PETRI_PLACES=1136, PETRI_TRANSITIONS=4083} [2021-03-25 02:34:55,571 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 1097 predicate places. [2021-03-25 02:34:55,572 INFO L480 AbstractCegarLoop]: Abstraction has has 1136 places, 4083 transitions, 57281 flow [2021-03-25 02:34:55,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 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) [2021-03-25 02:34:55,572 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:34:55,572 INFO L263 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] [2021-03-25 02:34:55,572 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-25 02:34:55,572 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:34:55,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:34:55,572 INFO L82 PathProgramCache]: Analyzing trace with hash -631167279, now seen corresponding path program 20 times [2021-03-25 02:34:55,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:34:55,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881659738] [2021-03-25 02:34:55,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:34:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:34:55,588 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:34:55,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:34:55,593 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:34:55,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:34:55,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:55,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:34:55,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:55,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:34:55,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:55,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:34:55,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:55,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:34:55,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:55,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:34:55,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:55,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:34:55,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:55,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:34:55,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:55,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:34:55,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:55,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:34:55,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:55,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:34:55,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:55,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:34:55,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:55,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:34:55,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:34:55,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:34:55,846 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 02:34:55,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:34:55,868 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 02:34:55,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:34:55,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:34:55,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881659738] [2021-03-25 02:34:55,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:34:55,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-25 02:34:55,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596138034] [2021-03-25 02:34:55,871 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-25 02:34:55,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:34:55,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-25 02:34:55,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-25 02:34:55,872 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-25 02:34:55,872 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1136 places, 4083 transitions, 57281 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 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) [2021-03-25 02:34:55,873 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:34:55,873 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-25 02:34:55,873 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:35:04,435 INFO L129 PetriNetUnfolder]: 5706/9421 cut-off events. [2021-03-25 02:35:04,435 INFO L130 PetriNetUnfolder]: For 625254/625314 co-relation queries the response was YES. [2021-03-25 02:35:04,618 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110164 conditions, 9421 events. 5706/9421 cut-off events. For 625254/625314 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 63040 event pairs, 336 based on Foata normal form. 18/9438 useless extension candidates. Maximal degree in co-relation 109756. Up to 7983 conditions per place. [2021-03-25 02:35:04,672 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 3270 selfloop transitions, 1273 changer transitions 2/4553 dead transitions. [2021-03-25 02:35:04,672 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1202 places, 4553 transitions, 79904 flow [2021-03-25 02:35:04,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-03-25 02:35:04,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2021-03-25 02:35:04,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 2077 transitions. [2021-03-25 02:35:04,674 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5189905047476262 [2021-03-25 02:35:04,674 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 2077 transitions. [2021-03-25 02:35:04,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 2077 transitions. [2021-03-25 02:35:04,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:35:04,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 2077 transitions. [2021-03-25 02:35:04,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 70 states, 69 states have (on average 30.10144927536232) internal successors, (2077), 69 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) [2021-03-25 02:35:04,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 70 states, 70 states have (on average 58.0) internal successors, (4060), 70 states have internal predecessors, (4060), 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) [2021-03-25 02:35:04,681 INFO L81 ComplementDD]: Finished complementDD. Result has 70 states, 70 states have (on average 58.0) internal successors, (4060), 70 states have internal predecessors, (4060), 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) [2021-03-25 02:35:04,681 INFO L185 Difference]: Start difference. First operand has 1136 places, 4083 transitions, 57281 flow. Second operand 69 states and 2077 transitions. [2021-03-25 02:35:04,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1202 places, 4553 transitions, 79904 flow [2021-03-25 02:35:18,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1195 places, 4553 transitions, 77144 flow, removed 1221 selfloop flow, removed 7 redundant places. [2021-03-25 02:35:18,641 INFO L241 Difference]: Finished difference. Result has 1224 places, 4479 transitions, 69742 flow [2021-03-25 02:35:18,644 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=54529, PETRI_DIFFERENCE_MINUEND_PLACES=1127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4083, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=919, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3088, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=69742, PETRI_PLACES=1224, PETRI_TRANSITIONS=4479} [2021-03-25 02:35:18,645 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 1185 predicate places. [2021-03-25 02:35:18,645 INFO L480 AbstractCegarLoop]: Abstraction has has 1224 places, 4479 transitions, 69742 flow [2021-03-25 02:35:18,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 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) [2021-03-25 02:35:18,645 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:35:18,645 INFO L263 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] [2021-03-25 02:35:18,645 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-25 02:35:18,645 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:35:18,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:35:18,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1775055925, now seen corresponding path program 21 times [2021-03-25 02:35:18,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:35:18,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226807957] [2021-03-25 02:35:18,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:35:18,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:35:18,660 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:35:18,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:35:18,666 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:35:18,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:35:18,673 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:35:18,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:35:18,689 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 02:35:18,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 02:35:18,699 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 02:35:18,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 02:35:18,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:35:18,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:35:18,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:35:18,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:35:18,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:35:18,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:35:18,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:35:18,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:35:18,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:35:18,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:35:18,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:35:18,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:35:18,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:35:18,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:35:18,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:35:18,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:35:18,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:35:18,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:35:18,840 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 02:35:18,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 02:35:18,846 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 02:35:18,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:35:18,872 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 02:35:18,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:35:18,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:35:18,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226807957] [2021-03-25 02:35:18,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:35:18,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-03-25 02:35:18,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793169906] [2021-03-25 02:35:18,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-25 02:35:18,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:35:18,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-25 02:35:18,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-03-25 02:35:18,878 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-25 02:35:18,878 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1224 places, 4479 transitions, 69742 flow. Second operand has 15 states, 15 states have (on average 27.2) internal successors, (408), 15 states have internal predecessors, (408), 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) [2021-03-25 02:35:18,878 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:35:18,879 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-25 02:35:18,879 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:35:27,891 INFO L129 PetriNetUnfolder]: 5781/9536 cut-off events. [2021-03-25 02:35:27,891 INFO L130 PetriNetUnfolder]: For 666264/666324 co-relation queries the response was YES. [2021-03-25 02:35:28,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 114437 conditions, 9536 events. 5781/9536 cut-off events. For 666264/666324 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 63697 event pairs, 359 based on Foata normal form. 13/9548 useless extension candidates. Maximal degree in co-relation 114000. Up to 8646 conditions per place. [2021-03-25 02:35:28,264 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 4012 selfloop transitions, 565 changer transitions 2/4587 dead transitions. [2021-03-25 02:35:28,265 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1250 places, 4587 transitions, 82337 flow [2021-03-25 02:35:28,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-03-25 02:35:28,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-03-25 02:35:28,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 879 transitions. [2021-03-25 02:35:28,266 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5225921521997622 [2021-03-25 02:35:28,266 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 879 transitions. [2021-03-25 02:35:28,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 879 transitions. [2021-03-25 02:35:28,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:35:28,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 879 transitions. [2021-03-25 02:35:28,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 30.310344827586206) internal successors, (879), 29 states have internal predecessors, (879), 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) [2021-03-25 02:35:28,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 58.0) internal successors, (1740), 30 states have internal predecessors, (1740), 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) [2021-03-25 02:35:28,276 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 58.0) internal successors, (1740), 30 states have internal predecessors, (1740), 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) [2021-03-25 02:35:28,276 INFO L185 Difference]: Start difference. First operand has 1224 places, 4479 transitions, 69742 flow. Second operand 29 states and 879 transitions. [2021-03-25 02:35:28,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1250 places, 4587 transitions, 82337 flow [2021-03-25 02:35:42,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1241 places, 4587 transitions, 73873 flow, removed 3879 selfloop flow, removed 9 redundant places. [2021-03-25 02:35:43,007 INFO L241 Difference]: Finished difference. Result has 1249 places, 4565 transitions, 64969 flow [2021-03-25 02:35:43,010 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=61278, PETRI_DIFFERENCE_MINUEND_PLACES=1213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=488, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3946, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=64969, PETRI_PLACES=1249, PETRI_TRANSITIONS=4565} [2021-03-25 02:35:43,010 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 1210 predicate places. [2021-03-25 02:35:43,010 INFO L480 AbstractCegarLoop]: Abstraction has has 1249 places, 4565 transitions, 64969 flow [2021-03-25 02:35:43,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 27.2) internal successors, (408), 15 states have internal predecessors, (408), 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) [2021-03-25 02:35:43,010 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:35:43,011 INFO L263 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] [2021-03-25 02:35:43,011 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-25 02:35:43,011 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:35:43,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:35:43,011 INFO L82 PathProgramCache]: Analyzing trace with hash 2011255385, now seen corresponding path program 22 times [2021-03-25 02:35:43,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:35:43,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073521820] [2021-03-25 02:35:43,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:35:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:35:43,026 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:35:43,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:35:43,031 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:35:43,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:35:43,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:35:43,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:35:43,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:35:43,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:35:43,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:35:43,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:35:43,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:35:43,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:35:43,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:35:43,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:35:43,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:35:43,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:35:43,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:35:43,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:35:43,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:35:43,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:35:43,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:35:43,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:35:43,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:35:43,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:35:43,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:35:43,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:35:43,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:35:43,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:35:43,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:35:43,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:35:43,232 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 02:35:43,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:35:43,253 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 02:35:43,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:35:43,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:35:43,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073521820] [2021-03-25 02:35:43,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:35:43,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-25 02:35:43,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701267240] [2021-03-25 02:35:43,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-25 02:35:43,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:35:43,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-25 02:35:43,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-25 02:35:43,256 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-25 02:35:43,257 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1249 places, 4565 transitions, 64969 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 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) [2021-03-25 02:35:43,257 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:35:43,257 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-25 02:35:43,257 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:35:52,538 INFO L129 PetriNetUnfolder]: 5978/9944 cut-off events. [2021-03-25 02:35:52,538 INFO L130 PetriNetUnfolder]: For 668918/668978 co-relation queries the response was YES. [2021-03-25 02:35:52,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116461 conditions, 9944 events. 5978/9944 cut-off events. For 668918/668978 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 68003 event pairs, 351 based on Foata normal form. 18/9961 useless extension candidates. Maximal degree in co-relation 116013. Up to 8483 conditions per place. [2021-03-25 02:35:52,790 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 3620 selfloop transitions, 1190 changer transitions 2/4820 dead transitions. [2021-03-25 02:35:52,790 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1311 places, 4820 transitions, 83240 flow [2021-03-25 02:35:52,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-03-25 02:35:52,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-03-25 02:35:52,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 1954 transitions. [2021-03-25 02:35:52,793 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5183023872679046 [2021-03-25 02:35:52,793 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 1954 transitions. [2021-03-25 02:35:52,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 1954 transitions. [2021-03-25 02:35:52,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:35:52,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 1954 transitions. [2021-03-25 02:35:52,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 30.06153846153846) internal successors, (1954), 65 states have internal predecessors, (1954), 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) [2021-03-25 02:35:52,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 58.0) internal successors, (3828), 66 states have internal predecessors, (3828), 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) [2021-03-25 02:35:52,798 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 58.0) internal successors, (3828), 66 states have internal predecessors, (3828), 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) [2021-03-25 02:35:52,798 INFO L185 Difference]: Start difference. First operand has 1249 places, 4565 transitions, 64969 flow. Second operand 65 states and 1954 transitions. [2021-03-25 02:35:52,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1311 places, 4820 transitions, 83240 flow [2021-03-25 02:36:06,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1304 places, 4820 transitions, 81604 flow, removed 591 selfloop flow, removed 7 redundant places. [2021-03-25 02:36:06,384 INFO L241 Difference]: Finished difference. Result has 1321 places, 4767 transitions, 73424 flow [2021-03-25 02:36:06,387 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=63345, PETRI_DIFFERENCE_MINUEND_PLACES=1240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1008, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=73424, PETRI_PLACES=1321, PETRI_TRANSITIONS=4767} [2021-03-25 02:36:06,387 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 1282 predicate places. [2021-03-25 02:36:06,387 INFO L480 AbstractCegarLoop]: Abstraction has has 1321 places, 4767 transitions, 73424 flow [2021-03-25 02:36:06,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 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) [2021-03-25 02:36:06,388 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:36:06,388 INFO L263 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] [2021-03-25 02:36:06,388 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-25 02:36:06,388 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:36:06,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:36:06,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1418656925, now seen corresponding path program 23 times [2021-03-25 02:36:06,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:36:06,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807780314] [2021-03-25 02:36:06,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:36:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:36:06,405 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:36:06,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:36:06,410 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:36:06,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:36:06,418 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:36:06,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:36:06,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:36:06,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:36:06,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:36:06,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:36:06,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:36:06,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:36:06,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:36:06,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:36:06,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:36:06,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:36:06,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:36:06,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:36:06,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:36:06,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:36:06,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:36:06,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:36:06,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:36:06,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:36:06,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:36:06,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:36:06,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:36:06,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:36:06,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:36:06,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:36:06,582 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 02:36:06,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:36:06,603 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 02:36:06,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:36:06,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:36:06,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807780314] [2021-03-25 02:36:06,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:36:06,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-25 02:36:06,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782919673] [2021-03-25 02:36:06,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-25 02:36:06,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:36:06,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-25 02:36:06,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-25 02:36:06,608 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-25 02:36:06,608 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1321 places, 4767 transitions, 73424 flow. Second operand has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 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) [2021-03-25 02:36:06,608 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:36:06,608 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-25 02:36:06,608 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:36:17,515 INFO L129 PetriNetUnfolder]: 6233/10382 cut-off events. [2021-03-25 02:36:17,515 INFO L130 PetriNetUnfolder]: For 751079/751139 co-relation queries the response was YES. [2021-03-25 02:36:17,742 INFO L84 FinitePrefix]: Finished finitePrefix Result has 127034 conditions, 10382 events. 6233/10382 cut-off events. For 751079/751139 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 71733 event pairs, 379 based on Foata normal form. 13/10394 useless extension candidates. Maximal degree in co-relation 126566. Up to 8966 conditions per place. [2021-03-25 02:36:17,918 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 4097 selfloop transitions, 950 changer transitions 5/5060 dead transitions. [2021-03-25 02:36:17,918 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1363 places, 5060 transitions, 93187 flow [2021-03-25 02:36:17,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-03-25 02:36:17,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-03-25 02:36:17,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 1381 transitions. [2021-03-25 02:36:17,920 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5291187739463602 [2021-03-25 02:36:17,920 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 1381 transitions. [2021-03-25 02:36:17,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 1381 transitions. [2021-03-25 02:36:17,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:36:17,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 1381 transitions. [2021-03-25 02:36:17,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 30.68888888888889) internal successors, (1381), 45 states have internal predecessors, (1381), 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) [2021-03-25 02:36:17,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 58.0) internal successors, (2668), 46 states have internal predecessors, (2668), 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) [2021-03-25 02:36:17,923 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 58.0) internal successors, (2668), 46 states have internal predecessors, (2668), 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) [2021-03-25 02:36:17,923 INFO L185 Difference]: Start difference. First operand has 1321 places, 4767 transitions, 73424 flow. Second operand 45 states and 1381 transitions. [2021-03-25 02:36:17,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1363 places, 5060 transitions, 93187 flow [2021-03-25 02:36:36,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1351 places, 5060 transitions, 86608 flow, removed 2831 selfloop flow, removed 12 redundant places. [2021-03-25 02:36:36,933 INFO L241 Difference]: Finished difference. Result has 1367 places, 5001 transitions, 76611 flow [2021-03-25 02:36:36,937 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=67003, PETRI_DIFFERENCE_MINUEND_PLACES=1307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4767, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=745, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3996, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=76611, PETRI_PLACES=1367, PETRI_TRANSITIONS=5001} [2021-03-25 02:36:36,937 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 1328 predicate places. [2021-03-25 02:36:36,937 INFO L480 AbstractCegarLoop]: Abstraction has has 1367 places, 5001 transitions, 76611 flow [2021-03-25 02:36:36,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 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) [2021-03-25 02:36:36,937 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:36:36,938 INFO L263 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] [2021-03-25 02:36:36,938 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-25 02:36:36,938 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:36:36,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:36:36,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1205070581, now seen corresponding path program 24 times [2021-03-25 02:36:36,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:36:36,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776954473] [2021-03-25 02:36:36,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:36:36,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:36:36,953 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:36:36,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:36:36,958 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:36:36,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:36:36,965 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:36:36,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:36:36,974 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 02:36:36,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 02:36:36,983 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 02:36:36,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 02:36:36,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:36:36,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:36:36,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:36:36,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:36:37,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:36:37,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:36:37,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:36:37,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:36:37,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:36:37,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:36:37,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:36:37,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:36:37,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:36:37,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:36:37,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:36:37,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:36:37,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:36:37,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:36:37,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:36:37,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:36:37,175 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-25 02:36:37,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:36:37,202 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 02:36:37,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:36:37,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:36:37,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776954473] [2021-03-25 02:36:37,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:36:37,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-25 02:36:37,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609687818] [2021-03-25 02:36:37,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-25 02:36:37,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:36:37,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-25 02:36:37,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-25 02:36:37,206 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-25 02:36:37,207 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1367 places, 5001 transitions, 76611 flow. Second operand has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 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) [2021-03-25 02:36:37,207 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:36:37,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-25 02:36:37,207 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:36:46,807 INFO L129 PetriNetUnfolder]: 6246/10412 cut-off events. [2021-03-25 02:36:46,808 INFO L130 PetriNetUnfolder]: For 736839/736899 co-relation queries the response was YES. [2021-03-25 02:36:47,046 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124859 conditions, 10412 events. 6246/10412 cut-off events. For 736839/736899 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 71963 event pairs, 408 based on Foata normal form. 13/10424 useless extension candidates. Maximal degree in co-relation 124373. Up to 9442 conditions per place. [2021-03-25 02:36:47,106 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 4480 selfloop transitions, 557 changer transitions 2/5047 dead transitions. [2021-03-25 02:36:47,106 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1391 places, 5047 transitions, 88073 flow [2021-03-25 02:36:47,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-25 02:36:47,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-03-25 02:36:47,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 831 transitions. [2021-03-25 02:36:47,107 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5116995073891626 [2021-03-25 02:36:47,107 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 831 transitions. [2021-03-25 02:36:47,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 831 transitions. [2021-03-25 02:36:47,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:36:47,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 831 transitions. [2021-03-25 02:36:47,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 29.678571428571427) internal successors, (831), 28 states have internal predecessors, (831), 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) [2021-03-25 02:36:47,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 58.0) internal successors, (1682), 29 states have internal predecessors, (1682), 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) [2021-03-25 02:36:47,109 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 58.0) internal successors, (1682), 29 states have internal predecessors, (1682), 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) [2021-03-25 02:36:47,109 INFO L185 Difference]: Start difference. First operand has 1367 places, 5001 transitions, 76611 flow. Second operand 28 states and 831 transitions. [2021-03-25 02:36:47,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1391 places, 5047 transitions, 88073 flow [2021-03-25 02:37:04,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1383 places, 5047 transitions, 83336 flow, removed 2114 selfloop flow, removed 8 redundant places. [2021-03-25 02:37:04,579 INFO L241 Difference]: Finished difference. Result has 1387 places, 5033 transitions, 74184 flow [2021-03-25 02:37:04,584 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=71876, PETRI_DIFFERENCE_MINUEND_PLACES=1356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5001, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=534, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=74184, PETRI_PLACES=1387, PETRI_TRANSITIONS=5033} [2021-03-25 02:37:04,584 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 1348 predicate places. [2021-03-25 02:37:04,584 INFO L480 AbstractCegarLoop]: Abstraction has has 1387 places, 5033 transitions, 74184 flow [2021-03-25 02:37:04,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 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) [2021-03-25 02:37:04,584 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:37:04,584 INFO L263 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] [2021-03-25 02:37:04,584 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-25 02:37:04,584 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:37:04,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:37:04,585 INFO L82 PathProgramCache]: Analyzing trace with hash -263128795, now seen corresponding path program 25 times [2021-03-25 02:37:04,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:37:04,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136485558] [2021-03-25 02:37:04,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:37:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:37:04,599 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:37:04,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:37:04,604 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:37:04,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:37:04,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:37:04,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:37:04,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:37:04,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:37:04,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:37:04,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:37:04,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:37:04,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:37:04,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:37:04,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:37:04,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:37:04,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:37:04,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:37:04,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:37:04,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:37:04,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:37:04,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:37:04,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:37:04,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:37:04,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:37:04,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:37:04,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:37:04,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:37:04,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:37:04,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:37:04,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:37:04,808 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 02:37:04,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:37:04,831 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 02:37:04,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:37:04,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:37:04,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136485558] [2021-03-25 02:37:04,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:37:04,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-25 02:37:04,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741784171] [2021-03-25 02:37:04,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-25 02:37:04,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:37:04,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-25 02:37:04,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-25 02:37:04,840 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-25 02:37:04,840 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1387 places, 5033 transitions, 74184 flow. Second operand has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 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) [2021-03-25 02:37:04,840 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:37:04,840 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-25 02:37:04,840 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:37:15,834 INFO L129 PetriNetUnfolder]: 6591/10954 cut-off events. [2021-03-25 02:37:15,835 INFO L130 PetriNetUnfolder]: For 779177/779237 co-relation queries the response was YES. [2021-03-25 02:37:16,094 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132350 conditions, 10954 events. 6591/10954 cut-off events. For 779177/779237 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 76108 event pairs, 351 based on Foata normal form. 18/10971 useless extension candidates. Maximal degree in co-relation 131865. Up to 9025 conditions per place. [2021-03-25 02:37:16,160 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 3608 selfloop transitions, 1787 changer transitions 7/5410 dead transitions. [2021-03-25 02:37:16,160 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1429 places, 5410 transitions, 95649 flow [2021-03-25 02:37:16,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-03-25 02:37:16,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-03-25 02:37:16,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 1402 transitions. [2021-03-25 02:37:16,162 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5371647509578544 [2021-03-25 02:37:16,162 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 1402 transitions. [2021-03-25 02:37:16,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 1402 transitions. [2021-03-25 02:37:16,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:37:16,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 1402 transitions. [2021-03-25 02:37:16,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 31.155555555555555) internal successors, (1402), 45 states have internal predecessors, (1402), 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) [2021-03-25 02:37:16,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 58.0) internal successors, (2668), 46 states have internal predecessors, (2668), 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) [2021-03-25 02:37:16,165 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 58.0) internal successors, (2668), 46 states have internal predecessors, (2668), 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) [2021-03-25 02:37:16,165 INFO L185 Difference]: Start difference. First operand has 1387 places, 5033 transitions, 74184 flow. Second operand 45 states and 1402 transitions. [2021-03-25 02:37:16,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1429 places, 5410 transitions, 95649 flow [2021-03-25 02:37:35,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1418 places, 5410 transitions, 93941 flow, removed 533 selfloop flow, removed 11 redundant places. [2021-03-25 02:37:35,799 INFO L241 Difference]: Finished difference. Result has 1435 places, 5309 transitions, 83862 flow [2021-03-25 02:37:35,804 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=72476, PETRI_DIFFERENCE_MINUEND_PLACES=1374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5033, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1541, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=83862, PETRI_PLACES=1435, PETRI_TRANSITIONS=5309} [2021-03-25 02:37:35,804 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 1396 predicate places. [2021-03-25 02:37:35,804 INFO L480 AbstractCegarLoop]: Abstraction has has 1435 places, 5309 transitions, 83862 flow [2021-03-25 02:37:35,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 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) [2021-03-25 02:37:35,804 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:37:35,804 INFO L263 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] [2021-03-25 02:37:35,804 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-25 02:37:35,804 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:37:35,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:37:35,805 INFO L82 PathProgramCache]: Analyzing trace with hash 201555225, now seen corresponding path program 26 times [2021-03-25 02:37:35,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:37:35,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734662470] [2021-03-25 02:37:35,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:37:35,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:37:35,819 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:37:35,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:37:35,824 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:37:35,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:37:35,833 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:37:35,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:37:35,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:37:35,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:37:35,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:37:35,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:37:35,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:37:35,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:37:35,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:37:35,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:37:35,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:37:35,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:37:35,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:37:35,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:37:35,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:37:35,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:37:35,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:37:35,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:37:35,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:37:35,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:37:35,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:37:35,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:37:35,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:37:35,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:37:36,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:37:36,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:37:36,033 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 02:37:36,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:37:36,059 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 02:37:36,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:37:36,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:37:36,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734662470] [2021-03-25 02:37:36,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:37:36,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-25 02:37:36,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491038903] [2021-03-25 02:37:36,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-25 02:37:36,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:37:36,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-25 02:37:36,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-25 02:37:36,064 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-25 02:37:36,064 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1435 places, 5309 transitions, 83862 flow. Second operand has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 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) [2021-03-25 02:37:36,064 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:37:36,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-25 02:37:36,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:37:48,657 INFO L129 PetriNetUnfolder]: 6784/11265 cut-off events. [2021-03-25 02:37:48,657 INFO L130 PetriNetUnfolder]: For 931289/931349 co-relation queries the response was YES. [2021-03-25 02:37:49,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 144666 conditions, 11265 events. 6784/11265 cut-off events. For 931289/931349 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 78621 event pairs, 420 based on Foata normal form. 13/11277 useless extension candidates. Maximal degree in co-relation 144164. Up to 9820 conditions per place. [2021-03-25 02:37:49,101 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 4435 selfloop transitions, 1105 changer transitions 12/5560 dead transitions. [2021-03-25 02:37:49,101 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1477 places, 5560 transitions, 105274 flow [2021-03-25 02:37:49,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-03-25 02:37:49,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-03-25 02:37:49,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 1448 transitions. [2021-03-25 02:37:49,103 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5311812179016875 [2021-03-25 02:37:49,103 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 1448 transitions. [2021-03-25 02:37:49,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 1448 transitions. [2021-03-25 02:37:49,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:37:49,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 1448 transitions. [2021-03-25 02:37:49,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 30.80851063829787) internal successors, (1448), 47 states have internal predecessors, (1448), 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) [2021-03-25 02:37:49,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 58.0) internal successors, (2784), 48 states have internal predecessors, (2784), 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) [2021-03-25 02:37:49,107 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 58.0) internal successors, (2784), 48 states have internal predecessors, (2784), 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) [2021-03-25 02:37:49,107 INFO L185 Difference]: Start difference. First operand has 1435 places, 5309 transitions, 83862 flow. Second operand 47 states and 1448 transitions. [2021-03-25 02:37:49,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1477 places, 5560 transitions, 105274 flow [2021-03-25 02:38:13,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1463 places, 5560 transitions, 100679 flow, removed 1467 selfloop flow, removed 14 redundant places. [2021-03-25 02:38:13,918 INFO L241 Difference]: Finished difference. Result has 1484 places, 5507 transitions, 89418 flow [2021-03-25 02:38:13,922 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=79589, PETRI_DIFFERENCE_MINUEND_PLACES=1417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=916, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=89418, PETRI_PLACES=1484, PETRI_TRANSITIONS=5507} [2021-03-25 02:38:13,922 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 1445 predicate places. [2021-03-25 02:38:13,923 INFO L480 AbstractCegarLoop]: Abstraction has has 1484 places, 5507 transitions, 89418 flow [2021-03-25 02:38:13,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 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) [2021-03-25 02:38:13,923 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:38:13,923 INFO L263 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] [2021-03-25 02:38:13,923 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-25 02:38:13,923 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:38:13,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:38:13,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1455962203, now seen corresponding path program 27 times [2021-03-25 02:38:13,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:38:13,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602700163] [2021-03-25 02:38:13,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:38:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:38:13,937 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:38:13,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:38:13,942 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:38:13,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:38:13,950 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:38:13,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:38:13,958 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 02:38:13,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 02:38:13,967 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 02:38:13,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 02:38:13,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:38:13,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:38:13,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:38:13,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:38:14,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:38:14,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:38:14,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:38:14,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:38:14,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:38:14,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:38:14,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:38:14,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:38:14,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:38:14,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:38:14,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:38:14,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:38:14,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:38:14,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:38:14,125 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 02:38:14,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 02:38:14,146 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 02:38:14,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:38:14,170 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 02:38:14,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:38:14,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:38:14,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602700163] [2021-03-25 02:38:14,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:38:14,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-25 02:38:14,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002344777] [2021-03-25 02:38:14,173 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-25 02:38:14,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:38:14,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-25 02:38:14,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-25 02:38:14,174 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-25 02:38:14,174 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1484 places, 5507 transitions, 89418 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 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) [2021-03-25 02:38:14,174 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:38:14,174 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-25 02:38:14,174 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:38:25,780 INFO L129 PetriNetUnfolder]: 6793/11286 cut-off events. [2021-03-25 02:38:25,780 INFO L130 PetriNetUnfolder]: For 1077728/1077788 co-relation queries the response was YES. [2021-03-25 02:38:26,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147153 conditions, 11286 events. 6793/11286 cut-off events. For 1077728/1077788 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 78847 event pairs, 413 based on Foata normal form. 14/11299 useless extension candidates. Maximal degree in co-relation 146631. Up to 10253 conditions per place. [2021-03-25 02:38:26,198 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 4950 selfloop transitions, 585 changer transitions 6/5549 dead transitions. [2021-03-25 02:38:26,198 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1502 places, 5549 transitions, 101802 flow [2021-03-25 02:38:26,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-25 02:38:26,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-03-25 02:38:26,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 782 transitions. [2021-03-25 02:38:26,199 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5185676392572944 [2021-03-25 02:38:26,199 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 782 transitions. [2021-03-25 02:38:26,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 782 transitions. [2021-03-25 02:38:26,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:38:26,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 782 transitions. [2021-03-25 02:38:26,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 30.076923076923077) internal successors, (782), 26 states have internal predecessors, (782), 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) [2021-03-25 02:38:26,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 58.0) internal successors, (1566), 27 states have internal predecessors, (1566), 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) [2021-03-25 02:38:26,201 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 58.0) internal successors, (1566), 27 states have internal predecessors, (1566), 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) [2021-03-25 02:38:26,201 INFO L185 Difference]: Start difference. First operand has 1484 places, 5507 transitions, 89418 flow. Second operand 26 states and 782 transitions. [2021-03-25 02:38:26,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1502 places, 5549 transitions, 101802 flow [2021-03-25 02:38:51,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1489 places, 5549 transitions, 97765 flow, removed 1623 selfloop flow, removed 13 redundant places. [2021-03-25 02:38:51,561 INFO L241 Difference]: Finished difference. Result has 1494 places, 5530 transitions, 87514 flow [2021-03-25 02:38:51,564 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=85381, PETRI_DIFFERENCE_MINUEND_PLACES=1464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=564, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4937, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=87514, PETRI_PLACES=1494, PETRI_TRANSITIONS=5530} [2021-03-25 02:38:51,565 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 1455 predicate places. [2021-03-25 02:38:51,565 INFO L480 AbstractCegarLoop]: Abstraction has has 1494 places, 5530 transitions, 87514 flow [2021-03-25 02:38:51,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 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) [2021-03-25 02:38:51,565 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:38:51,565 INFO L263 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] [2021-03-25 02:38:51,565 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-25 02:38:51,565 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:38:51,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:38:51,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1840172089, now seen corresponding path program 28 times [2021-03-25 02:38:51,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:38:51,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503818035] [2021-03-25 02:38:51,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:38:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:38:51,579 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:38:51,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:38:51,584 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:38:51,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:38:51,592 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:38:51,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:38:51,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:38:51,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:38:51,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:38:51,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:38:51,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:38:51,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:38:51,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:38:51,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:38:51,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:38:51,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:38:51,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:38:51,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:38:51,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:38:51,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:38:51,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:38:51,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:38:51,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:38:51,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:38:51,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:38:51,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:38:51,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:38:51,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:38:51,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:38:51,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:38:51,799 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 02:38:51,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:38:51,829 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 02:38:51,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:38:51,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:38:51,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503818035] [2021-03-25 02:38:51,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:38:51,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-25 02:38:51,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570742433] [2021-03-25 02:38:51,832 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-25 02:38:51,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:38:51,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-25 02:38:51,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-25 02:38:51,833 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-25 02:38:51,833 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1494 places, 5530 transitions, 87514 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 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) [2021-03-25 02:38:51,833 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:38:51,833 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-25 02:38:51,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:38:58,341 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2021-03-25 02:39:05,186 INFO L129 PetriNetUnfolder]: 7098/11820 cut-off events. [2021-03-25 02:39:05,187 INFO L130 PetriNetUnfolder]: For 1153687/1153747 co-relation queries the response was YES. [2021-03-25 02:39:05,483 INFO L84 FinitePrefix]: Finished finitePrefix Result has 157925 conditions, 11820 events. 7098/11820 cut-off events. For 1153687/1153747 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 83578 event pairs, 415 based on Foata normal form. 13/11832 useless extension candidates. Maximal degree in co-relation 157401. Up to 10064 conditions per place. [2021-03-25 02:39:05,554 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 4484 selfloop transitions, 1346 changer transitions 14/5852 dead transitions. [2021-03-25 02:39:05,554 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1544 places, 5852 transitions, 112205 flow [2021-03-25 02:39:05,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-03-25 02:39:05,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-03-25 02:39:05,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 1661 transitions. [2021-03-25 02:39:05,556 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5206896551724138 [2021-03-25 02:39:05,556 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 1661 transitions. [2021-03-25 02:39:05,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 1661 transitions. [2021-03-25 02:39:05,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:39:05,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 1661 transitions. [2021-03-25 02:39:05,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 30.2) internal successors, (1661), 55 states have internal predecessors, (1661), 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) [2021-03-25 02:39:05,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 58.0) internal successors, (3248), 56 states have internal predecessors, (3248), 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) [2021-03-25 02:39:05,560 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 58.0) internal successors, (3248), 56 states have internal predecessors, (3248), 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) [2021-03-25 02:39:05,560 INFO L185 Difference]: Start difference. First operand has 1494 places, 5530 transitions, 87514 flow. Second operand 55 states and 1661 transitions. [2021-03-25 02:39:05,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1544 places, 5852 transitions, 112205 flow [2021-03-25 02:39:34,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1532 places, 5852 transitions, 110809 flow, removed 357 selfloop flow, removed 12 redundant places. [2021-03-25 02:39:34,835 INFO L241 Difference]: Finished difference. Result has 1554 places, 5792 transitions, 99150 flow [2021-03-25 02:39:34,838 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=86128, PETRI_DIFFERENCE_MINUEND_PLACES=1478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=99150, PETRI_PLACES=1554, PETRI_TRANSITIONS=5792} [2021-03-25 02:39:34,838 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 1515 predicate places. [2021-03-25 02:39:34,838 INFO L480 AbstractCegarLoop]: Abstraction has has 1554 places, 5792 transitions, 99150 flow [2021-03-25 02:39:34,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 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) [2021-03-25 02:39:34,838 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:39:34,838 INFO L263 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] [2021-03-25 02:39:34,839 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-25 02:39:34,839 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:39:34,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:39:34,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1277350325, now seen corresponding path program 29 times [2021-03-25 02:39:34,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:39:34,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549229892] [2021-03-25 02:39:34,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:39:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:39:34,852 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:39:34,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:39:34,857 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:39:34,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:39:34,864 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:39:34,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:39:34,873 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 02:39:34,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 02:39:34,883 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 02:39:34,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 02:39:34,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:39:34,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:39:34,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:39:34,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:39:34,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:39:34,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:39:34,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:39:34,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:39:34,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:39:34,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:39:34,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:39:34,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:39:34,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:39:34,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:39:34,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:39:34,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:39:35,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:39:35,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:39:35,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:39:35,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:39:35,054 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-25 02:39:35,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:39:35,077 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 02:39:35,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:39:35,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:39:35,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549229892] [2021-03-25 02:39:35,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:39:35,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-25 02:39:35,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56485075] [2021-03-25 02:39:35,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-25 02:39:35,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:39:35,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-25 02:39:35,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-25 02:39:35,080 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-25 02:39:35,080 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1554 places, 5792 transitions, 99150 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 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) [2021-03-25 02:39:35,080 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:39:35,080 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-25 02:39:35,081 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:39:48,163 INFO L129 PetriNetUnfolder]: 7097/11832 cut-off events. [2021-03-25 02:39:48,163 INFO L130 PetriNetUnfolder]: For 1252914/1252974 co-relation queries the response was YES. [2021-03-25 02:39:48,473 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162521 conditions, 11832 events. 7097/11832 cut-off events. For 1252914/1252974 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 83787 event pairs, 419 based on Foata normal form. 13/11844 useless extension candidates. Maximal degree in co-relation 162072. Up to 10765 conditions per place. [2021-03-25 02:39:48,542 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 5248 selfloop transitions, 571 changer transitions 2/5829 dead transitions. [2021-03-25 02:39:48,543 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1578 places, 5829 transitions, 112267 flow [2021-03-25 02:39:48,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-25 02:39:48,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-03-25 02:39:48,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 888 transitions. [2021-03-25 02:39:48,544 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5103448275862069 [2021-03-25 02:39:48,544 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 888 transitions. [2021-03-25 02:39:48,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 888 transitions. [2021-03-25 02:39:48,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:39:48,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 888 transitions. [2021-03-25 02:39:48,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 29.6) internal successors, (888), 30 states have internal predecessors, (888), 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) [2021-03-25 02:39:48,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 58.0) internal successors, (1798), 31 states have internal predecessors, (1798), 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) [2021-03-25 02:39:48,546 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 58.0) internal successors, (1798), 31 states have internal predecessors, (1798), 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) [2021-03-25 02:39:48,546 INFO L185 Difference]: Start difference. First operand has 1554 places, 5792 transitions, 99150 flow. Second operand 30 states and 888 transitions. [2021-03-25 02:39:48,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1578 places, 5829 transitions, 112267 flow [2021-03-25 02:40:17,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1564 places, 5829 transitions, 106133 flow, removed 2676 selfloop flow, removed 14 redundant places. [2021-03-25 02:40:17,665 INFO L241 Difference]: Finished difference. Result has 1566 places, 5814 transitions, 95340 flow [2021-03-25 02:40:17,668 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=93022, PETRI_DIFFERENCE_MINUEND_PLACES=1535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5792, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=554, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=95340, PETRI_PLACES=1566, PETRI_TRANSITIONS=5814} [2021-03-25 02:40:17,668 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 1527 predicate places. [2021-03-25 02:40:17,668 INFO L480 AbstractCegarLoop]: Abstraction has has 1566 places, 5814 transitions, 95340 flow [2021-03-25 02:40:17,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 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) [2021-03-25 02:40:17,668 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:40:17,668 INFO L263 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] [2021-03-25 02:40:17,668 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-25 02:40:17,669 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:40:17,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:40:17,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1263203151, now seen corresponding path program 30 times [2021-03-25 02:40:17,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:40:17,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620418128] [2021-03-25 02:40:17,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:40:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:40:17,684 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:40:17,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:40:17,690 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:40:17,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:40:17,698 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:40:17,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:40:17,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:40:17,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:40:17,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:40:17,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:40:17,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:40:17,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:40:17,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:40:17,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:40:17,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:40:17,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:40:17,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:40:17,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:40:17,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:40:17,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:40:17,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:40:17,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:40:17,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:40:17,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:40:17,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:40:17,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:40:17,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:40:17,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:40:17,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:40:17,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:40:17,871 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 02:40:17,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:40:17,892 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 02:40:17,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:40:17,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:40:17,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620418128] [2021-03-25 02:40:17,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:40:17,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-25 02:40:17,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429234571] [2021-03-25 02:40:17,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-25 02:40:17,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:40:17,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-25 02:40:17,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-25 02:40:17,895 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-25 02:40:17,895 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1566 places, 5814 transitions, 95340 flow. Second operand has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 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) [2021-03-25 02:40:17,895 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:40:17,895 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-25 02:40:17,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:40:31,663 INFO L129 PetriNetUnfolder]: 7127/11905 cut-off events. [2021-03-25 02:40:31,663 INFO L130 PetriNetUnfolder]: For 1227703/1227763 co-relation queries the response was YES. [2021-03-25 02:40:31,979 INFO L84 FinitePrefix]: Finished finitePrefix Result has 160239 conditions, 11905 events. 7127/11905 cut-off events. For 1227703/1227763 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 84486 event pairs, 447 based on Foata normal form. 13/11917 useless extension candidates. Maximal degree in co-relation 159693. Up to 10480 conditions per place. [2021-03-25 02:40:32,149 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 4795 selfloop transitions, 1097 changer transitions 8/5908 dead transitions. [2021-03-25 02:40:32,149 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1599 places, 5908 transitions, 111635 flow [2021-03-25 02:40:32,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-25 02:40:32,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-03-25 02:40:32,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1088 transitions. [2021-03-25 02:40:32,151 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5210727969348659 [2021-03-25 02:40:32,151 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1088 transitions. [2021-03-25 02:40:32,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1088 transitions. [2021-03-25 02:40:32,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:40:32,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1088 transitions. [2021-03-25 02:40:32,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 30.22222222222222) internal successors, (1088), 36 states have internal predecessors, (1088), 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) [2021-03-25 02:40:32,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 58.0) internal successors, (2146), 37 states have internal predecessors, (2146), 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) [2021-03-25 02:40:32,154 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 58.0) internal successors, (2146), 37 states have internal predecessors, (2146), 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) [2021-03-25 02:40:32,154 INFO L185 Difference]: Start difference. First operand has 1566 places, 5814 transitions, 95340 flow. Second operand 36 states and 1088 transitions. [2021-03-25 02:40:32,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1599 places, 5908 transitions, 111635 flow [2021-03-25 02:40:59,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1587 places, 5908 transitions, 109891 flow, removed 561 selfloop flow, removed 12 redundant places. [2021-03-25 02:40:59,244 INFO L241 Difference]: Finished difference. Result has 1599 places, 5874 transitions, 99336 flow [2021-03-25 02:40:59,247 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=93606, PETRI_DIFFERENCE_MINUEND_PLACES=1552, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5814, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1043, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4746, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=99336, PETRI_PLACES=1599, PETRI_TRANSITIONS=5874} [2021-03-25 02:40:59,247 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 1560 predicate places. [2021-03-25 02:40:59,247 INFO L480 AbstractCegarLoop]: Abstraction has has 1599 places, 5874 transitions, 99336 flow [2021-03-25 02:40:59,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 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) [2021-03-25 02:40:59,247 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:40:59,247 INFO L263 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] [2021-03-25 02:40:59,247 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-25 02:40:59,247 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:40:59,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:40:59,248 INFO L82 PathProgramCache]: Analyzing trace with hash 785855763, now seen corresponding path program 31 times [2021-03-25 02:40:59,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:40:59,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375234412] [2021-03-25 02:40:59,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:40:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:40:59,264 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:40:59,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:40:59,269 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:40:59,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:40:59,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:40:59,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:40:59,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:40:59,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:40:59,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:40:59,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:40:59,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:40:59,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:40:59,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:40:59,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:40:59,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:40:59,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:40:59,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:40:59,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:40:59,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:40:59,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:40:59,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:40:59,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:40:59,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:40:59,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:40:59,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:40:59,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:40:59,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:40:59,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:40:59,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:40:59,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:40:59,463 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 02:40:59,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:40:59,486 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 02:40:59,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:40:59,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:40:59,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375234412] [2021-03-25 02:40:59,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:40:59,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-25 02:40:59,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044488068] [2021-03-25 02:40:59,489 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-25 02:40:59,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:40:59,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-25 02:40:59,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-25 02:40:59,490 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-25 02:40:59,490 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1599 places, 5874 transitions, 99336 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 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) [2021-03-25 02:40:59,490 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:40:59,490 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-25 02:40:59,490 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:41:12,906 INFO L129 PetriNetUnfolder]: 7328/12238 cut-off events. [2021-03-25 02:41:12,906 INFO L130 PetriNetUnfolder]: For 1315004/1315075 co-relation queries the response was YES. [2021-03-25 02:41:13,218 INFO L84 FinitePrefix]: Finished finitePrefix Result has 167720 conditions, 12238 events. 7328/12238 cut-off events. For 1315004/1315075 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 87425 event pairs, 419 based on Foata normal form. 24/12261 useless extension candidates. Maximal degree in co-relation 167162. Up to 10640 conditions per place. [2021-03-25 02:41:13,289 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 4795 selfloop transitions, 1299 changer transitions 2/6104 dead transitions. [2021-03-25 02:41:13,289 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1640 places, 6104 transitions, 118671 flow [2021-03-25 02:41:13,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-03-25 02:41:13,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-03-25 02:41:13,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 1345 transitions. [2021-03-25 02:41:13,390 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5153256704980843 [2021-03-25 02:41:13,391 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 1345 transitions. [2021-03-25 02:41:13,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 1345 transitions. [2021-03-25 02:41:13,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:41:13,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 1345 transitions. [2021-03-25 02:41:13,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 29.88888888888889) internal successors, (1345), 45 states have internal predecessors, (1345), 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) [2021-03-25 02:41:13,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 58.0) internal successors, (2668), 46 states have internal predecessors, (2668), 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) [2021-03-25 02:41:13,394 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 58.0) internal successors, (2668), 46 states have internal predecessors, (2668), 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) [2021-03-25 02:41:13,394 INFO L185 Difference]: Start difference. First operand has 1599 places, 5874 transitions, 99336 flow. Second operand 45 states and 1345 transitions. [2021-03-25 02:41:13,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1640 places, 6104 transitions, 118671 flow [2021-03-25 02:41:47,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1628 places, 6104 transitions, 115513 flow, removed 1157 selfloop flow, removed 12 redundant places. [2021-03-25 02:41:47,795 INFO L241 Difference]: Finished difference. Result has 1637 places, 6060 transitions, 105065 flow [2021-03-25 02:41:47,797 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=96182, PETRI_DIFFERENCE_MINUEND_PLACES=1584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5874, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4711, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=105065, PETRI_PLACES=1637, PETRI_TRANSITIONS=6060} [2021-03-25 02:41:47,797 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 1598 predicate places. [2021-03-25 02:41:47,797 INFO L480 AbstractCegarLoop]: Abstraction has has 1637 places, 6060 transitions, 105065 flow [2021-03-25 02:41:47,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 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) [2021-03-25 02:41:47,797 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:41:47,797 INFO L263 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] [2021-03-25 02:41:47,798 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-25 02:41:47,798 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:41:47,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:41:47,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1557563039, now seen corresponding path program 32 times [2021-03-25 02:41:47,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:41:47,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138766825] [2021-03-25 02:41:47,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:41:47,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:41:47,825 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:41:47,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:41:47,831 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:41:47,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:41:47,838 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:41:47,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:41:47,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:41:47,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:41:47,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:41:47,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:41:47,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:41:47,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:41:47,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:41:47,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:41:47,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:41:47,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:41:47,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:41:47,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:41:47,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:41:47,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:41:47,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:41:47,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:41:47,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:41:47,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:41:48,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:41:48,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:41:48,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:41:48,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:41:48,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:41:48,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:41:48,062 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 02:41:48,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:41:48,084 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 02:41:48,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:41:48,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:41:48,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138766825] [2021-03-25 02:41:48,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:41:48,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-25 02:41:48,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070849753] [2021-03-25 02:41:48,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-25 02:41:48,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:41:48,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-25 02:41:48,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-25 02:41:48,087 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-25 02:41:48,088 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1637 places, 6060 transitions, 105065 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 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) [2021-03-25 02:41:48,088 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:41:48,088 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-25 02:41:48,088 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:42:02,220 INFO L129 PetriNetUnfolder]: 7550/12621 cut-off events. [2021-03-25 02:42:02,220 INFO L130 PetriNetUnfolder]: For 1364437/1364497 co-relation queries the response was YES. [2021-03-25 02:42:02,563 INFO L84 FinitePrefix]: Finished finitePrefix Result has 175292 conditions, 12621 events. 7550/12621 cut-off events. For 1364437/1364497 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 91175 event pairs, 403 based on Foata normal form. 13/12633 useless extension candidates. Maximal degree in co-relation 174725. Up to 11112 conditions per place. [2021-03-25 02:42:02,639 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 5220 selfloop transitions, 1089 changer transitions 3/6320 dead transitions. [2021-03-25 02:42:02,640 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1674 places, 6320 transitions, 126400 flow [2021-03-25 02:42:02,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-25 02:42:02,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-03-25 02:42:02,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 1191 transitions. [2021-03-25 02:42:02,649 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5133620689655173 [2021-03-25 02:42:02,649 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 1191 transitions. [2021-03-25 02:42:02,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 1191 transitions. [2021-03-25 02:42:02,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:42:02,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 1191 transitions. [2021-03-25 02:42:02,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 29.775) internal successors, (1191), 40 states have internal predecessors, (1191), 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) [2021-03-25 02:42:02,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 58.0) internal successors, (2378), 41 states have internal predecessors, (2378), 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) [2021-03-25 02:42:02,652 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 58.0) internal successors, (2378), 41 states have internal predecessors, (2378), 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) [2021-03-25 02:42:02,653 INFO L185 Difference]: Start difference. First operand has 1637 places, 6060 transitions, 105065 flow. Second operand 40 states and 1191 transitions. [2021-03-25 02:42:02,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1674 places, 6320 transitions, 126400 flow [2021-03-25 02:42:36,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1662 places, 6320 transitions, 120945 flow, removed 2142 selfloop flow, removed 12 redundant places. [2021-03-25 02:42:36,482 INFO L241 Difference]: Finished difference. Result has 1671 places, 6282 transitions, 109481 flow [2021-03-25 02:42:36,485 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=99612, PETRI_DIFFERENCE_MINUEND_PLACES=1623, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6060, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=883, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=109481, PETRI_PLACES=1671, PETRI_TRANSITIONS=6282} [2021-03-25 02:42:36,485 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 1632 predicate places. [2021-03-25 02:42:36,485 INFO L480 AbstractCegarLoop]: Abstraction has has 1671 places, 6282 transitions, 109481 flow [2021-03-25 02:42:36,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 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) [2021-03-25 02:42:36,485 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:42:36,485 INFO L263 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] [2021-03-25 02:42:36,485 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-25 02:42:36,485 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:42:36,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:42:36,486 INFO L82 PathProgramCache]: Analyzing trace with hash 616126481, now seen corresponding path program 33 times [2021-03-25 02:42:36,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:42:36,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237096718] [2021-03-25 02:42:36,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:42:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:42:36,564 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:42:36,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:42:36,569 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:42:36,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:42:36,578 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:42:36,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:42:36,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:42:36,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:42:36,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:42:36,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:42:36,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:42:36,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:42:36,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:42:36,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:42:36,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:42:36,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:42:36,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:42:36,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:42:36,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:42:36,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:42:36,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:42:36,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:42:36,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:42:36,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:42:36,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:42:36,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:42:36,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:42:36,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:42:36,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:42:36,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:42:36,810 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 02:42:36,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:42:36,838 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 02:42:36,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:42:36,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:42:36,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237096718] [2021-03-25 02:42:36,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:42:36,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-25 02:42:36,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890395976] [2021-03-25 02:42:36,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-25 02:42:36,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:42:36,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-25 02:42:36,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-25 02:42:36,843 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-25 02:42:36,843 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1671 places, 6282 transitions, 109481 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 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) [2021-03-25 02:42:36,843 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:42:36,843 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-25 02:42:36,843 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:42:51,614 INFO L129 PetriNetUnfolder]: 7610/12773 cut-off events. [2021-03-25 02:42:51,614 INFO L130 PetriNetUnfolder]: For 1401438/1401498 co-relation queries the response was YES. [2021-03-25 02:42:51,959 INFO L84 FinitePrefix]: Finished finitePrefix Result has 177948 conditions, 12773 events. 7610/12773 cut-off events. For 1401438/1401498 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 92946 event pairs, 456 based on Foata normal form. 13/12785 useless extension candidates. Maximal degree in co-relation 177366. Up to 11165 conditions per place. [2021-03-25 02:42:52,139 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 5299 selfloop transitions, 1079 changer transitions 3/6389 dead transitions. [2021-03-25 02:42:52,139 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1701 places, 6389 transitions, 126764 flow [2021-03-25 02:42:52,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-25 02:42:52,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-03-25 02:42:52,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 995 transitions. [2021-03-25 02:42:52,153 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5198537095088819 [2021-03-25 02:42:52,153 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 995 transitions. [2021-03-25 02:42:52,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 995 transitions. [2021-03-25 02:42:52,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:42:52,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 995 transitions. [2021-03-25 02:42:52,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 30.151515151515152) internal successors, (995), 33 states have internal predecessors, (995), 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) [2021-03-25 02:42:52,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 58.0) internal successors, (1972), 34 states have internal predecessors, (1972), 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) [2021-03-25 02:42:52,155 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 58.0) internal successors, (1972), 34 states have internal predecessors, (1972), 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) [2021-03-25 02:42:52,155 INFO L185 Difference]: Start difference. First operand has 1671 places, 6282 transitions, 109481 flow. Second operand 33 states and 995 transitions. [2021-03-25 02:42:52,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1701 places, 6389 transitions, 126764 flow [2021-03-25 02:43:24,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1694 places, 6389 transitions, 121876 flow, removed 2087 selfloop flow, removed 7 redundant places. [2021-03-25 02:43:24,753 INFO L241 Difference]: Finished difference. Result has 1707 places, 6353 transitions, 109881 flow [2021-03-25 02:43:24,756 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=104595, PETRI_DIFFERENCE_MINUEND_PLACES=1662, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1020, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=109881, PETRI_PLACES=1707, PETRI_TRANSITIONS=6353} [2021-03-25 02:43:24,756 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 1668 predicate places. [2021-03-25 02:43:24,756 INFO L480 AbstractCegarLoop]: Abstraction has has 1707 places, 6353 transitions, 109881 flow [2021-03-25 02:43:24,756 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 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) [2021-03-25 02:43:24,757 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:43:24,757 INFO L263 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] [2021-03-25 02:43:24,757 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-25 02:43:24,757 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:43:24,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:43:24,757 INFO L82 PathProgramCache]: Analyzing trace with hash -19655375, now seen corresponding path program 34 times [2021-03-25 02:43:24,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:43:24,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263012610] [2021-03-25 02:43:24,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:43:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:43:24,770 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:43:24,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:43:24,775 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:43:24,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:43:24,783 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:43:24,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:43:24,792 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 02:43:24,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 02:43:24,802 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 02:43:24,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 02:43:24,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:43:24,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:43:24,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:43:24,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:43:24,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:43:24,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:43:24,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:43:24,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:43:24,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:43:24,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:43:24,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:43:24,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:43:24,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:43:24,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:43:24,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:43:24,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:43:24,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:43:24,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:43:24,972 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 02:43:24,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 02:43:24,993 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 02:43:24,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:43:25,014 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 02:43:25,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:43:25,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:43:25,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263012610] [2021-03-25 02:43:25,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:43:25,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-25 02:43:25,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518065504] [2021-03-25 02:43:25,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-25 02:43:25,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:43:25,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-25 02:43:25,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-25 02:43:25,018 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-25 02:43:25,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1707 places, 6353 transitions, 109881 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 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) [2021-03-25 02:43:25,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:43:25,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-25 02:43:25,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:43:39,623 INFO L129 PetriNetUnfolder]: 7612/12780 cut-off events. [2021-03-25 02:43:39,624 INFO L130 PetriNetUnfolder]: For 1423375/1423435 co-relation queries the response was YES. [2021-03-25 02:43:39,982 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178015 conditions, 12780 events. 7612/12780 cut-off events. For 1423375/1423435 co-relation queries the response was YES. Maximal size of possible extension queue 725. Compared 93021 event pairs, 487 based on Foata normal form. 13/12792 useless extension candidates. Maximal degree in co-relation 177417. Up to 11603 conditions per place. [2021-03-25 02:43:40,163 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 5798 selfloop transitions, 576 changer transitions 3/6385 dead transitions. [2021-03-25 02:43:40,163 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1735 places, 6385 transitions, 123995 flow [2021-03-25 02:43:40,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-25 02:43:40,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-03-25 02:43:40,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 922 transitions. [2021-03-25 02:43:40,165 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5127919911012235 [2021-03-25 02:43:40,165 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 922 transitions. [2021-03-25 02:43:40,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 922 transitions. [2021-03-25 02:43:40,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:43:40,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 922 transitions. [2021-03-25 02:43:40,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 29.741935483870968) internal successors, (922), 31 states have internal predecessors, (922), 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) [2021-03-25 02:43:40,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 58.0) internal successors, (1856), 32 states have internal predecessors, (1856), 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) [2021-03-25 02:43:40,168 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 58.0) internal successors, (1856), 32 states have internal predecessors, (1856), 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) [2021-03-25 02:43:40,168 INFO L185 Difference]: Start difference. First operand has 1707 places, 6353 transitions, 109881 flow. Second operand 31 states and 922 transitions. [2021-03-25 02:43:40,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1735 places, 6385 transitions, 123995 flow [2021-03-25 02:44:19,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1726 places, 6385 transitions, 120703 flow, removed 1091 selfloop flow, removed 9 redundant places. [2021-03-25 02:44:19,626 INFO L241 Difference]: Finished difference. Result has 1731 places, 6367 transitions, 108687 flow [2021-03-25 02:44:19,628 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=106589, PETRI_DIFFERENCE_MINUEND_PLACES=1696, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=566, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5782, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=108687, PETRI_PLACES=1731, PETRI_TRANSITIONS=6367} [2021-03-25 02:44:19,628 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 1692 predicate places. [2021-03-25 02:44:19,629 INFO L480 AbstractCegarLoop]: Abstraction has has 1731 places, 6367 transitions, 108687 flow [2021-03-25 02:44:19,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 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) [2021-03-25 02:44:19,629 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:44:19,629 INFO L263 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] [2021-03-25 02:44:19,629 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-25 02:44:19,629 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:44:19,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:44:19,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1865607577, now seen corresponding path program 35 times [2021-03-25 02:44:19,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:44:19,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108273599] [2021-03-25 02:44:19,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:44:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:44:19,641 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:44:19,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:44:19,646 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:44:19,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:44:19,653 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:44:19,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:44:19,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:44:19,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:44:19,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:44:19,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:44:19,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:44:19,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:44:19,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:44:19,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:44:19,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:44:19,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:44:19,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:44:19,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:44:19,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:44:19,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:44:19,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:44:19,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:44:19,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:44:19,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:44:19,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:44:19,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:44:19,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:44:19,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:44:19,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:44:19,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:44:19,828 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 02:44:19,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:44:19,849 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 02:44:19,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:44:19,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:44:19,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108273599] [2021-03-25 02:44:19,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:44:19,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-25 02:44:19,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214266638] [2021-03-25 02:44:19,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-25 02:44:19,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:44:19,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-25 02:44:19,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-25 02:44:19,852 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-25 02:44:19,852 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1731 places, 6367 transitions, 108687 flow. Second operand has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 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) [2021-03-25 02:44:19,852 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:44:19,852 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-25 02:44:19,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:44:35,715 INFO L129 PetriNetUnfolder]: 7957/13304 cut-off events. [2021-03-25 02:44:35,715 INFO L130 PetriNetUnfolder]: For 1614888/1614948 co-relation queries the response was YES. [2021-03-25 02:44:36,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193250 conditions, 13304 events. 7957/13304 cut-off events. For 1614888/1614948 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 96985 event pairs, 464 based on Foata normal form. 13/13316 useless extension candidates. Maximal degree in co-relation 192648. Up to 11366 conditions per place. [2021-03-25 02:44:36,309 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 5111 selfloop transitions, 1453 changer transitions 10/6582 dead transitions. [2021-03-25 02:44:36,309 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1766 places, 6582 transitions, 132141 flow [2021-03-25 02:44:36,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-25 02:44:36,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-03-25 02:44:36,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1207 transitions. [2021-03-25 02:44:36,311 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5335985853227233 [2021-03-25 02:44:36,311 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 1207 transitions. [2021-03-25 02:44:36,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 1207 transitions. [2021-03-25 02:44:36,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:44:36,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 1207 transitions. [2021-03-25 02:44:36,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 30.94871794871795) internal successors, (1207), 39 states have internal predecessors, (1207), 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) [2021-03-25 02:44:36,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 58.0) internal successors, (2320), 40 states have internal predecessors, (2320), 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) [2021-03-25 02:44:36,313 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 58.0) internal successors, (2320), 40 states have internal predecessors, (2320), 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) [2021-03-25 02:44:36,313 INFO L185 Difference]: Start difference. First operand has 1731 places, 6367 transitions, 108687 flow. Second operand 39 states and 1207 transitions. [2021-03-25 02:44:36,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1766 places, 6582 transitions, 132141 flow [2021-03-25 02:45:22,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1745 places, 6582 transitions, 130480 flow, removed 440 selfloop flow, removed 21 redundant places. [2021-03-25 02:45:22,351 INFO L241 Difference]: Finished difference. Result has 1756 places, 6533 transitions, 117416 flow [2021-03-25 02:45:22,355 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=107036, PETRI_DIFFERENCE_MINUEND_PLACES=1707, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1321, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5016, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=117416, PETRI_PLACES=1756, PETRI_TRANSITIONS=6533} [2021-03-25 02:45:22,355 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 1717 predicate places. [2021-03-25 02:45:22,355 INFO L480 AbstractCegarLoop]: Abstraction has has 1756 places, 6533 transitions, 117416 flow [2021-03-25 02:45:22,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 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) [2021-03-25 02:45:22,355 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:45:22,355 INFO L263 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] [2021-03-25 02:45:22,355 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-25 02:45:22,355 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:45:22,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:45:22,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1131745127, now seen corresponding path program 36 times [2021-03-25 02:45:22,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:45:22,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135027297] [2021-03-25 02:45:22,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:45:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:45:22,368 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:45:22,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:45:22,373 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:45:22,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:45:22,381 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-25 02:45:22,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:45:22,390 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 02:45:22,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 02:45:22,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:45:22,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:45:22,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:45:22,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:45:22,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:45:22,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:45:22,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:45:22,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:45:22,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:45:22,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:45:22,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:45:22,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:45:22,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:45:22,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:45:22,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:45:22,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:45:22,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:45:22,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:45:22,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:45:22,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:45:22,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:45:22,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:45:22,594 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 02:45:22,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:45:22,616 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 02:45:22,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:45:22,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:45:22,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135027297] [2021-03-25 02:45:22,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:45:22,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-25 02:45:22,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822416625] [2021-03-25 02:45:22,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-25 02:45:22,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:45:22,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-25 02:45:22,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-25 02:45:22,619 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-25 02:45:22,620 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1756 places, 6533 transitions, 117416 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 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) [2021-03-25 02:45:22,620 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:45:22,620 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-25 02:45:22,620 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:45:40,063 INFO L129 PetriNetUnfolder]: 8088/13490 cut-off events. [2021-03-25 02:45:40,063 INFO L130 PetriNetUnfolder]: For 1848934/1849005 co-relation queries the response was YES. [2021-03-25 02:45:40,568 INFO L84 FinitePrefix]: Finished finitePrefix Result has 205456 conditions, 13490 events. 8088/13490 cut-off events. For 1848934/1849005 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 98239 event pairs, 467 based on Foata normal form. 19/13508 useless extension candidates. Maximal degree in co-relation 204858. Up to 12136 conditions per place. [2021-03-25 02:45:40,652 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 5993 selfloop transitions, 690 changer transitions 6/6697 dead transitions. [2021-03-25 02:45:40,652 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1784 places, 6697 transitions, 140709 flow [2021-03-25 02:45:40,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-25 02:45:40,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-03-25 02:45:40,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1041 transitions. [2021-03-25 02:45:40,654 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5278904665314401 [2021-03-25 02:45:40,654 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1041 transitions. [2021-03-25 02:45:40,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1041 transitions. [2021-03-25 02:45:40,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:45:40,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1041 transitions. [2021-03-25 02:45:40,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 30.61764705882353) internal successors, (1041), 34 states have internal predecessors, (1041), 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) [2021-03-25 02:45:40,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 58.0) internal successors, (2030), 35 states have internal predecessors, (2030), 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) [2021-03-25 02:45:40,656 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 58.0) internal successors, (2030), 35 states have internal predecessors, (2030), 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) [2021-03-25 02:45:40,656 INFO L185 Difference]: Start difference. First operand has 1756 places, 6533 transitions, 117416 flow. Second operand 34 states and 1041 transitions. [2021-03-25 02:45:40,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1784 places, 6697 transitions, 140709 flow Received shutdown request... [2021-03-25 02:46:21,056 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-25 02:46:21,056 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-25 02:46:21,058 WARN L224 ceAbstractionStarter]: Timeout [2021-03-25 02:46:21,059 INFO L202 PluginConnector]: Adding new model easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 02:46:21 BasicIcfg [2021-03-25 02:46:21,059 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 02:46:21,059 INFO L168 Benchmark]: Toolchain (without parser) took 815669.45 ms. Allocated memory was 255.9 MB in the beginning and 8.8 GB in the end (delta: 8.5 GB). Free memory was 236.5 MB in the beginning and 1.5 GB in the end (delta: -1.2 GB). Peak memory consumption was 7.6 GB. Max. memory is 16.0 GB. [2021-03-25 02:46:21,059 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 178.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 02:46:21,059 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.68 ms. Allocated memory is still 255.9 MB. Free memory was 236.3 MB in the beginning and 234.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 02:46:21,059 INFO L168 Benchmark]: Boogie Preprocessor took 12.57 ms. Allocated memory is still 255.9 MB. Free memory was 234.9 MB in the beginning and 233.9 MB in the end (delta: 959.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 02:46:21,060 INFO L168 Benchmark]: RCFGBuilder took 280.51 ms. Allocated memory is still 255.9 MB. Free memory was 233.8 MB in the beginning and 237.6 MB in the end (delta: -3.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.0 GB. [2021-03-25 02:46:21,060 INFO L168 Benchmark]: TraceAbstraction took 815349.56 ms. Allocated memory was 255.9 MB in the beginning and 8.8 GB in the end (delta: 8.5 GB). Free memory was 237.0 MB in the beginning and 1.5 GB in the end (delta: -1.2 GB). Peak memory consumption was 7.6 GB. Max. memory is 16.0 GB. [2021-03-25 02:46:21,060 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 0.12 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 178.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.68 ms. Allocated memory is still 255.9 MB. Free memory was 236.3 MB in the beginning and 234.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.57 ms. Allocated memory is still 255.9 MB. Free memory was 234.9 MB in the beginning and 233.9 MB in the end (delta: 959.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 280.51 ms. Allocated memory is still 255.9 MB. Free memory was 233.8 MB in the beginning and 237.6 MB in the end (delta: -3.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 815349.56 ms. Allocated memory was 255.9 MB in the beginning and 8.8 GB in the end (delta: 8.5 GB). Free memory was 237.0 MB in the beginning and 1.5 GB in the end (delta: -1.2 GB). Peak memory consumption was 7.6 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 514.3ms, 52 PlacesBefore, 39 PlacesAfterwards, 39 TransitionsBefore, 26 TransitionsAfterwards, 756 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 12 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 13 TotalNumberOfCompositions, 936 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 501, positive: 465, positive conditional: 0, positive unconditional: 465, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 450, positive: 419, positive conditional: 0, positive unconditional: 419, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 450, positive: 419, positive conditional: 0, positive unconditional: 419, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 450, positive: 415, positive conditional: 0, positive unconditional: 415, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 35, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 169, positive: 51, positive conditional: 0, positive unconditional: 51, negative: 118, negative conditional: 0, negative unconditional: 118, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 501, positive: 46, positive conditional: 0, positive unconditional: 46, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 450, unknown conditional: 0, unknown unconditional: 450] , Statistics on independence cache: Total cache size (in pairs): 120, Positive cache size: 100, Positive conditional cache size: 0, Positive unconditional cache size: 100, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20 - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 79). Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 16.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 815243.9ms, OverallIterations: 36, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 805362.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 619.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1514 SDtfs, 2828 SDslu, 2145 SDs, 0 SdLazy, 53188 SolverSat, 1820 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19926.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1816 GetRequests, 19 SyntacticMatches, 47 SemanticMatches, 1750 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26685 ImplicationChecksByTransitivity, 37071.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=117416occurred in iteration=35, InterpolantAutomatonStates: 1560, 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: 31.5ms SsaConstructionTime, 187.6ms SatisfiabilityAnalysisTime, 8803.4ms InterpolantComputationTime, 936 NumberOfCodeBlocks, 936 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 900 ConstructedInterpolants, 0 QuantifiedInterpolants, 11407 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 36 InterpolantComputations, 36 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